Journal articles: 'Water in agriculture. Zimbabwe'

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Chifurira, Retius, Delson Chikobvu, and Dorah Dubihlela. "Rainfall prediction for sustainable economic growth." Environmental Economics 7, no. 4 (2016): 120–29. http://dx.doi.org/10.21511/ee.07(4-1).2016.04.

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Agriculture is the backbone of Zimbabwe’s economy with the majority of Zimbabweans being rural people who derive their livelihood from agriculture and other agro-based economic activities. Zimbabwe’s agriculture depends on the erratic rainfall which threatens food, water and energy access, as well as vital livelihood systems which could severely undermine efforts to drive sustainable economic growth. For Zimbabwe, delivering a sustainable economic growth is intrinsically linked to improved climate modelling. Climate research plays a pivotal role in building Zimbabwe’s resilience to climate change and keeping the country on track, as it charts its path towards sustainable economic growth. This paper presents a simple tool to predict summer rainfall using standardized Darwin sea level pressure (SDSLP) anomalies and southern oscillation index (SOI) that are used as part of an early drought warning system. Results show that SDSLP anomalies and SOI for the month of April of the same year, i.e., seven months before onset of summer rainfall (December to February total rainfall) are a simple indicator of amount of summer rainfall in Zimbabwe. The low root mean square error (RMSE) and root mean absolute error (RMAE) values of the proposed model, make SDSLP anomalies for April and SOI for the same month an additional input candidates for regional rainfall prediction schemes. The results of the proposed model will benefit in the prediction of oncoming summer rainfall and will influence policy making in agriculture, environment planning, food redistribution and drought prediction for sustainable economic development. Keywords: sustainable economic growth, standardized Darwin sea level pressure anomalies, southern oscillation index, summer rainfall prediction, Zimbabwe. JEL Classification: Q16, Q25, Q54, Q55, Q58

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Dzvimbo, Munyaradzi Admire, Tinashe Mitchell Mashizha, Monica Monga, and Cornelias Ncube. "Conservation Agriculture and Climate Change: Implications for Sustainable Rural Development in Sanyati, Zimbabwe." Journal of Social and Development Sciences 8, no. 2 (2017): 38–46. http://dx.doi.org/10.22610/jsds.v8i2.1795.

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Zimbabwe is one of the most developed countries in Sub-Saharan Africa in that markets and rural industrialization are likely to function relatively well. Thus, Zimbabweâ€™s agricultural sector has been severely affected by climate change. The worsening agricultural conditions have led to undernourishment of many in rural areas and this has drawn so much attention. Young women have turned into prostitution, in their bid to ensure the survival of their families. Farmers in rural areas depend heavily on rain-fed water and with rainfall variability and extreme weather patterns records, their livelihoods are being threatened. To cope with the adverse impact of climate change on rural development, different coping strategies and mechanisms are being implemented. The government, non-governmental organizations (NGOs) and the private sector have all introduced various programmes and projects at grassroots levels. The information used in this paper was gathered using data from interviews, questionnaires, and focused group discussion. This article explores how conservation agriculture being one of the coping strategies, has helped rural farmers to deal with climate change and how it has sustained rural development in Sanyati District.

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Kahinda, Jean-marc Mwenge, Johan Rockström, Akpofure E. Taigbenu, and John Dimes. "Rainwater harvesting to enhance water productivity of rainfed agriculture in the semi-arid Zimbabwe." Physics and Chemistry of the Earth, Parts A/B/C 32, no. 15-18 (2007): 1068–73. http://dx.doi.org/10.1016/j.pce.2007.07.011.

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Nephawe, Ndivhoniswani, Marizvikuru Mwale, Jethro Zuwarimwe, and Malose Moses Tjale. "The Impact of Water-Related Challenges on Rural Communities Food Security Initiatives." AGRARIS: Journal of Agribusiness and Rural Development Research 7, no. 1 (2021): 11–23. http://dx.doi.org/10.18196/agraris.v7i1.9935.

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Water scarcity has been a critical concern in many countries of the world. The same concern has been discussed, analyzed and researched at different platforms to find better solutions to the challenges of water scarcity, and in most cases water scarcity directly influence food security in terms of food production. South Africa, being one of the water scarce countries that derives its food from the agricultural sector; water scarcity remains at the centre stage of the national socioeconomic debate. Water scarcity is one of the major challenges in many countries such as Zimbabwe and Ethiopia particularly for the farmers. However, there is insufficient information on the impact of water scarcity challenges on rural communities’ food security initiatives. This review is focused on unearthing water scarcity challenges in rural communities, their impact on agriculture and ultimately food security initiatives. This paves way for possible research areas, practical implications and strategies to mitigate water security effects on food security.

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Thierfelder, Christian, and Patrick C. Wall. "Effects of conservation agriculture techniques on infiltration and soil water content in Zambia and Zimbabwe." Soil and Tillage Research 105, no. 2 (2009): 217–27. http://dx.doi.org/10.1016/j.still.2009.07.007.

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Nhapi, Innocent. "The water situation in Harare, Zimbabwe: a policy and management problem." Water Policy 11, no. 2 (2009): 221–35. http://dx.doi.org/10.2166/wp.2009.018.

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Harare, the capital city of Zimbabwe, is facing water quantity and quality problems, with serious pollution of the downstream Lake Chivero. Often, these problems are attributed to rapid population growth, inadequate maintenance of wastewater treatment plants, expensive technologies and a poor institutional framework. Rampant urban agriculture could also result in washing off and leaching of nutrients. This paper brings out a number of issues related to sustainable water management in Harare. The study was based on key informant interviews, focus group discussions and a literature review. The results show that monitoring and enforcement of regulations in Harare is poor because of economic hardships and lack of political will to deal with offenders. Also, there is irregular collection of garbage, low fines owing to hyper-inflation and a general failure by the city to collect water and other charges from residents. The city has also failed to raise tariffs to economic levels owing to heavy lobbying by residents and interference by government. It was concluded that Harare cannot overcome its water-related problems under the current set-up. It is recommended that a corporatised body, free from political influence and with a higher degree of autonomy, be established to run the water services for Harare and the neighbouring towns. Such a body would need a sound and flexible system for setting tariffs and enacting/enforcing reasonable regulations.

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Mugambiwa, Shingirai, and Jabulani Makhubele. "Anthropogenic flash floods and climate change in rural Zimbabwe: Impacts and options for adaptation." Technium Social Sciences Journal 21 (July 9, 2021): 809–19. http://dx.doi.org/10.47577/tssj.v21i1.3977.

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Zimbabwe has been affected by numerous floods-related disasters in the recent past. These disasters often left rural communities in difficult socioeconomic situations. Floods are among the major water-related hazards and natural disasters worldwide. They are associated with excess rainfall, resulting in river overflow due to climate change . Developing countries constitute a large number of losses caused by water hazards. Thereby, in these countries, the vulnerabilities of households that depend on rain fed agriculture and livestock production for their livelihoods increases. This review paper seeks to establish the association between anthropogenic flash floods and climate change and unearth the impacts; vulnerabilities and adaptation options associated with anthropogenic flash floods in rural Zimbabwe. The study found that numerous anthropogenic activities perpetuate an increase in flood risk. These include littering, river or dam regulation measures, intensified land use and emissions of greenhouse gases, which subsequently result in global climate change. The impacts of flash floods established in the study include drought, food insecurity, displacements, malnutrition and severe effects on subsistence economy. The study concluded that even though most rural communities in Zimbabwe are vulnerable to the effects of floods, they have devised numerous diverse adaptation strategies to cope with the changes in the environment.

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Mugambiwa, S. S., and J. C. Makhubele. "Indigenous knowledge systems based climate governance in water and land resource management in rural Zimbabwe." Journal of Water and Climate Change 12, no. 5 (2021): 2045–54. http://dx.doi.org/10.2166/wcc.2021.183.

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Abstract This paper interrogates indigenous knowledge systems (IKS) based climate governance in water and land resource management in under-resourced areas of Zimbabwe. Water and land resources are fundamental for smallholder farmers and their productivity. The concept of IKS plays a significant role in climate change adaptation in Zimbabwe's rural communities. Climate change has a considerable influence on the success of agricultural production in the rural communities of Zimbabwe. Hence, it becomes fundamental to assess the community-based methods of climate governance. Qualitative multiple case study exploratory designs were employed with data collected through individual interviews with smallholder farmers, and thematic content analysis was used to analyse data. This study found that enhancing and embracing IKS is of paramount importance for inclusion in local-level strategies in the development process with special reference to climate governance in water and land resource management, particularly in under-resourced communities. It also established that the use of IKS enhances communities' adaptive capacity and it should not be conducted at the expense of scientific methods but rather should be employed in order to complement the existing scientific global knowledge systems.

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MADAMOMBE, SANDRA M., ISAIAH NYAGUMBO, BRIGHTON M. MVUMI, PHILLIP NYAMUGAFATA, MENAS WUTA, and CLEOPAS C. CHINHEYA. "NEMATODE MANAGEMENT IN RAIN-FED SMALLHOLDER MAIZE PRODUCTION SYSTEMS UNDER CONSERVATION AGRICULTURE IN ZIMBABWE." Experimental Agriculture 54, no. 3 (2017): 452–66. http://dx.doi.org/10.1017/s0014479717000163.

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SUMMARYNematode infestation in Sub-Saharan Africa's (SSA) cropping systems, worsened by poor crop rotations, is a major factor contributing to limited utilisation of applied nutrients and water, leading to low maize (Zea mays L.) yields particularly on sandy soils. The effects of nematode infestation on maize productivity were evaluated under conservation agriculture (CA) on granitic sandy soils in sub-humid smallholder farms of Goromonzi district of Zimbabwe. Four treatments were tested for three seasons on six smallholder farmers’ fields in a randomised complete block design, each farm being a replicate: fenamiphos 40EC (a commercial synthetic nematicide), lime + fenamiphos 40EC, lime and an untreated control. Results of the study showed that independent application of fenamiphos 40EC and lime significantly reduced plant parasitic nematode infestations in maize roots by more than 10 times those present in the untreated plots while maize yield also increased significantly. Yield increase from fenamiphos and lime applications amounted to 53 and 42% respectively, compared to the untreated controls. Maize yield was negatively correlated with density of Pratylenchus spp. nematodes. Nematode management strategies involving fenamiphos 40EC or lime could significantly reduce maize yield losses in maize-based smallholder farming systems of SSA under CA. It was more economical to use fenamiphos than lime to control nematodes.

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Mafuwe, Kudzai. "Freshwater Biodiversity of the Eastern Highlands of Zimbabwe: Assessing Conservation Priorities Using Primary Species-Occurrence Data." Biodiversity Information Science and Standards 2 (May 22, 2018): e25960. http://dx.doi.org/10.3897/biss.2.25960.

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The Eastern Highlands of Zimbabwe is a biodiversity hotspot that forms part of the Eastern Afromontane region, which has seen an increase in human activities such as agriculture, illegal mining, and introduction of invasive species. These anthropogenic activities have had negative environmental consequences including land degradation and water pollution, which have negatively impacted on the quality of aquatic habitats and biodiversity in the region. The region harbours several freshwater species of conservation interest whose numbers and distribution are little known. We also do not know the impacts of the ongoing human activities and threats on the local wetland biodiversity and the integrity of the ecosystem in the region. The relevant data on the wetland biodiversity from previous studies and surveys is also not readiliy available to guide poliies and conservation efforts in this region. With the aid of the Biodiversity Information for Development (BID) program sponsored by the Global Biodiversity Information Facility (GBIF) and the European Union (EU), a project titled 'Freshwater Biodiversity of the Eastern Highlands of Zimbabwe: Assessing Conservation Priorities Using Primary Species-Occurrence Data' has mobilized and digitized over 2,000 occurrence records on freshwater biodiversity, with a focus on fish, invertebrates, amphibians and bird species in the region, since October 2017. The project also makes use of biodiversity informatics tools such as ecological niche modelling, to identify the important sites for conservation of the freshwater biodiversity in this region. The outputs will help to show policy makers, wildlife managers, researchers and conservationists where to target resources and conservation efforts. This will also help protect the biodiversity that still existsin the unprotected wetlands of the Eastern Highlands of Zimbabwe and that could be lost to human activities such as clearing for agriculture.

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Chirisa, Innocent, Trynos Gumbo, Veronica N. Gundu-Jakarasi, et al. "Interrogating Climate Adaptation Financing in Zimbabwe: Proposed Direction." Sustainability 13, no. 12 (2021): 6517. http://dx.doi.org/10.3390/su13126517.

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Reducing vulnerability to climate change and enhancing the long-term coping capacities of rural or urban settlements to negative climate change impacts have become urgent issues in developing countries. Developing countries do not have the means to cope with climate hazards and their economies are highly dependent on climate-sensitive sectors such as agriculture, water, and coastal zones. Like most countries in Southern Africa, Zimbabwe suffers from climate-induced disasters. Therefore, this study maps critical aspects required for setting up a strong financial foundation for sustainable climate adaptation in Zimbabwe. It discusses the frameworks required for sustainable climate adaptation finance and suggests the direction for success in leveraging global climate financing towards building a low-carbon and climate-resilient Zimbabwe. The study involved a document review and analysis and stakeholder consultation methodological approach. The findings revealed that Zimbabwe has been significantly dependent on global finance mechanisms to mitigate the effects of climate change as its domestic finance mechanisms have not been fully explored. Results revealed the importance of partnership models between the state, individuals, civil society organisations, and agencies. Local financing institutions such as the Infrastructure Development Bank of Zimbabwe (IDBZ) have been set up. This operates a Climate Finance Facility (GFF), providing a domestic financial resource base. A climate change bill is also under formulation through government efforts. However, numerous barriers limit the adoption of adaptation practices, services, and technologies at the scale required. The absence of finance increases the vulnerability of local settlements (rural or urban) to extreme weather events leading to loss of life and property and compromised adaptive capacity. Therefore, the study recommends an adaptation financing framework aligned to different sectoral policies that can leverage diverse opportunities such as blended climate financing. The framework must foster synergies for improved impact and implementation of climate change adaptation initiatives for the country.

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Nhapi, I., H. J. Gijzen, and M. A. Siebel. "A conceptual framework for the sustainable management of wastewater in Harare, Zimbabwe." Water Science and Technology 47, no. 7-8 (2003): 11–18. http://dx.doi.org/10.2166/wst.2003.0665.

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The aim of this study was to formulate an integrated wastewater management model for Harare, Zimbabwe, based on current thinking. This implies that wastewater is treated/disposed of as close to the source of generation as possible. Resource recovery and reuse in a local thriving urban agriculture are integrated into this model. Intervention strategies were considered for controlling water, nitrogen and phosphorus flows to the lake. In the formulation of strategies, Harare was divided into five major operational areas of high-, medium-, and low-density residential areas, and also commercial and industrial areas. Specific options were then considered to suit landuse, development constraints and socio-economic status for each area, within the overall criteria of limiting nutrient inflows into the downstream Lake Chivero. Flexible and differential solutions were developed in relation to built environment, population density, composition of users, ownership, future environmental demands, and technical, environmental, hygienic, social and organisational factors. Options considered include source control by the users (residents, industries, etc.), using various strategies like implementation of toilets with source separation, and natural methods of wastewater treatment. Other possible strategies are invoking better behaviour through fees and information, incentives for cleaner production, and user responsibility through education, legislative changes and stricter controls over industry.

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Tanyanyiwa, Vincent Itai. "Indigenous Knowledge Systems and the Teaching of Climate Change in Zimbabwean Secondary Schools." SAGE Open 9, no. 4 (2019): 215824401988514. http://dx.doi.org/10.1177/2158244019885149.

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Indigenous African education grew out of the immediate environment, real or imaginary, where people had knowledge of the environment. Indigenous education inculcated a religious attitude that imbued courtesy, generosity, and honesty. At colonization, Africans were thought of as primitive although they had their own systems, contents, and methods of education. Colonialism signified the decline in the importance of indigenous knowledge systems (IKS). By shifting focus in the core curriculum from teaching/learning based on Western science to teaching/learning through IKS as a foundation for all education, it is anticipated that all forms of knowledge, ways of knowing, and world views be acknowledged as equally valid, adaptable, and complementary to one another in equally valuable ways. The uniqueness of indigenous people and their knowledge is inextricably connected to their lands, which are situated primarily at the social-ecological margins of human habitation such as tropical forests and desert margins. It is at these margins that the consequences of climate change manifest themselves in the following sectors: agriculture, pastoralism, fishing, hunting and gathering, and other subsistence activities, including access to water. Government policies in Zimbabwe often limit options and thus undermine indigenous peoples’ efforts to adapt. IKS is very important for community-based adaptation and mitigation actions in the agricultural sector for maintenance of resilience of social-ecological systems at a local level. This article, through interviews, document analysis, and personal observations, proposes that it is best for Zimbabwe to develop her own climate change curricula and modes of delivery that incorporates IKS.

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SENDA, TRINITY S., DON PEDEN, SABINE HOMANN-KEE TUI, GIVIOUS SISITO, ANDRÉ F. VAN ROOYEN, and JOSEPH L. N. SIKOSANA. "GENDERED LIVELIHOOD IMPLICATIONS FOR IMPROVEMENTS OF LIVESTOCK WATER PRODUCTIVITY IN ZIMBABWE." Experimental Agriculture 47, S1 (2011): 169–81. http://dx.doi.org/10.1017/s0014479710000943.

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SUMMARYScarcity, lack of access, and ineffective and inefficient use of water in Nkayi District, Zimbabwe, threaten agricultural production. The purpose of this study is to augment understanding of opportunities to increase livestock water productivity (LWP) in Nkayi District by taking into account key differences in the capacities, opportunities, and needs of women and men. There are two important types of female-headed households, de facto and de jure. The results from this study showed that male-headed and de facto and de jure female-headed households share much in common. They all had similar areas of cropland and access to education, finances, veterinary and extension services, and transportation and markets. Households of all types had similar herd sizes. All were desperately poor with incomes much less than a dollar a day. To rise out of poverty, the knowledge, skills and effort of all household heads will be needed. In spite of severe poverty, household heads of all types are literate and have sufficient education that can help enable adoption of intervention options that can lead to increased agricultural production and improved livelihoods. The results also showed that major differences exist in terms of the roles of men and women in ownership, management and decision making related to livestock keeping and animal production. Men clearly dominate in both ownership and decision making even though women play a major role in animal management. Only in de jure female-headed households were women more likely than men to own cattle and goats. They were also more likely to be involved in farming as a primary livelihood activity. Surprisingly, men were more likely to be involved in animal management in these de jure female-headed households. Women were also excluded from water users' and livestock producers' associations although a minority of men was members. By not involving the already-developed capacity of women, the community loses out on a significant opportunity to increase LWP and animal production more widely. Greater inclusion of women in decision making will be an important part of future efforts to improve livelihoods through livestock development.

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Tooley, Paul W. "Development of an Inoculation Technique and the Evaluation of Soybean Genotypes for Resistance to Coniothyrium glycines." Plant Disease 101, no. 8 (2017): 1411–16. http://dx.doi.org/10.1094/pdis-09-16-1373-re.

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Red leaf blotch, caused by Coniothyrium glycines, is a serious disease affecting soybean in several African countries but has not yet appeared in the United States. The fungal pathogen is listed as a Select Agent by the Federal Select Agent Program because of potential consequence to U.S. agriculture if introduced. Sources of resistance to red leaf blotch have not yet been identified in spite of extensive field testing in Zambia and Zimbabwe. A seedling inoculation protocol was used to investigate the effects of inoculum density, temperature (20 and 25°C), and dew chamber incubation period (2 to 5 days) on disease development in ‘Williams 82’ soybean. Inoculum density and incubation period had significant effects on disease severity but no significant difference was observed at 20 and 25°C. Highest levels of disease were obtained using 1.94 cm3 of mycelial inoculum per 10 ml of water and incubating plants for 5 days at 100% relative humidity. Significant differences were not observed between isolates from Zambia and Zimbabwe at 25°C. In total, 23 soybean genotypes that represent nearly 90% of the genes present in U.S. soybean were evaluated and found to be susceptible, which is consistent with previous field evaluations. This method could be useful in identifying new sources of resistance to red leaf blotch.

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Duker, A., C. Cambaza, P. Saveca, et al. "Using nature-based water storage for smallholder irrigated agriculture in African drylands: Lessons from frugal innovation pilots in Mozambique and Zimbabwe." Environmental Science & Policy 107 (May 2020): 1–6. http://dx.doi.org/10.1016/j.envsci.2020.02.010.

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Mazvimavi, D. "Investigating possible changes of extreme annual rainfall in Zimbabwe." Hydrology and Earth System Sciences Discussions 5, no. 4 (2008): 1765–85. http://dx.doi.org/10.5194/hessd-5-1765-2008.

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Abstract. There is increasing concern about the perceived decline in rainfall which is sometimes attributed to global warming. Some studies have concluded that average rainfall in Zimbabwe has declined by 10% or 100 mm/yr during the last 100 yrs. This paper investigates the validity of the assumption that rainfall is declining in Zimbabwe. Time series of annual rainfall, and total rainfall for a) the early party of the rainy season, October-November-December (OND), and b) the mid to end of the rainy season, January-February-March (JFM) are analysed for the presence of trends using the Mann-Kendall test, and changes in extreme rainfall using quantile regression analysis. The analysis has been done for 40 rainfall stations with records starting during the 1892–1940 period and ending in 2000, and representative of the major rainfall regions. The Mann-Kendal test did not identify a significant trend at all the 40 stations, and therefore there is no proof that the average rainfall at each of these stations has changed. Quantile regression analysis revealed a decline in annual rainfall less than the tenth percentile at only one station, and increasing rainfall for rainfall greater than the ninetieth percentile at another station. All the other stations revealed no changes over time in both the extreme low and high rainfall at the annual interval. Therefore, there is no evidence that the frequency and severity of droughts has changed during the 1892 to 2000 period. The general perception about declining rainfall is likely shaped by a comparison of the recent drought years (1980's–1990's) to recent wet periods (1970's). There have however been periods with similar dry years beyond the recallable memory, e.g. 1926–1936, 1940's. Crop failures and livestock losses attributed to declining rainfall are most likely due to poor agricultural practices such as production of crops in unsuitable climatic regions, degradation of rangelands partly due to increasing livestock populations. Rainfall in Zimbabwe has high inter-annual variability, and currently any change due to global warming is not yet statistically detectable. The annual renewal rate of water resources from rainfall has therefore not changed, and an adaptive water resources management approach is called to overcome problems arising from increasing water demand, and variability of available water resources.

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Senzanje, A., T. Chimunhu, and J. Zirebwa. "Assessment of water productivity trends for parastatal agricultural operations—case of Middle Sabi Estate, Zimbabwe." Physics and Chemistry of the Earth, Parts A/B/C 30, no. 11-16 (2005): 767–71. http://dx.doi.org/10.1016/j.pce.2005.08.019.

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Nyagumbo, I., and J. Rurinda. "An appraisal of policies and institutional frameworks impacting on smallholder agricultural water management in Zimbabwe." Physics and Chemistry of the Earth, Parts A/B/C 47-48 (2012): 21–32. http://dx.doi.org/10.1016/j.pce.2011.07.001.

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Merz, Leandra, Di Yang, and Vanessa Hull. "A Metacoupling Framework for Exploring Transboundary Watershed Management." Sustainability 12, no. 5 (2020): 1879. http://dx.doi.org/10.3390/su12051879.

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Water is crucial for ecosystem health and socioeconomic development, but water scarcity is becoming a global concern. Management of transboundary watersheds is inherently challenging and has the potential to lead to conflict over the allocation of water resources. The metacoupling framework, which explores the relationships between coupled human and natural systems that are nested within multiple different scales, has been proposed to inform more holistic management of transboundary watersheds. This paper provides the first attempt to apply a metacoupling framework to a transboundary watershed for an improved integrated understanding of this complex system at multiple spatial scales. It does so with the transnational Limpopo River watershed in Southern Africa, which covers 1.3% of the continent and supports the livelihoods of 18.8 million people living in Botswana, Mozambique, South Africa, and Zimbabwe. Sub-Saharan Africa is experiencing a growing gap between water availability and demand; the primary drivers are population growth and agriculture expansion. The novelty of the paper is outlining the importance of applying a metacoupling framework to transboundary watersheds, identifying the limitations to this application, and providing a detailed assessment of the steps needed to complete this application. We also identify directions for future research including application of a metacoupling framework to other transboundary watersheds and exploration of spillover effects and externalities within this and other transboundary watersheds.

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Chidakwa, Patience, Clifford Mabhena, Blessing Mucherera, Joyline Chikuni, and Chipo Mudavanhu. "Women’s Vulnerability to Climate Change: Gender-skewed Implications on Agro-based Livelihoods in Rural Zvishavane, Zimbabwe." Indian Journal of Gender Studies 27, no. 2 (2020): 259–81. http://dx.doi.org/10.1177/0971521520910969.

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Climate change presents a considerable threat to human security, with notable gender disproportions. Women’s vulnerability to climate change has implications on agro-based livelihoods, especially the rural populace. The primary purpose of this study was to assess women’s vulnerability to climate change and the gender-skewed implications on agro-based livelihoods in rural Zvishavane, Zimbabwe. A qualitative approach that used purposive sampling techniques was adopted. Data was collected through 20 in-depth interviews with 11 de jure and 9 de facto small-scale female-headed farmer households. Two focus group discussions with mixed de facto and de jure small-scale female-headed farmer households were also conducted. Five key informant interviews were held with departmental heads of the Ministry of Women’s Affairs, Gender and Community Development; the Agriculture Technical Extension Service Department; the Livestock Production Department; the Runde Rural District Council and the Meteorological Services Department. Gendered effects were noted in terms of increased roles and responsibilities for women. Observations showed that there was an increase in distances travelled by women to fetch water owing to a depleted water table. Climate-induced migration of men due to depleted livelihoods in rural areas has also increased roles and responsibilities for women. The traditional male responsibilities assumed by women included cattle herding and ox-driven ploughing. This study concluded that adaptation strategies towards vulnerability to climate change have to be gender-sensitive and area-specific. This study also recommended that response programmes and policies meant to curb existing gendered vulnerabilities should be informed by evidence because climate-change effects are unique for different geographical areas. Moreover, adaptation activities should be mainstreamed in community processes so as to reduce the burden on women and increase sustainability opportunities.

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du Toit, Raoul F. "Soil Loss, Hydrological Changes, and Conservation Attitudes, in the Sabi Catchment of Zimbabwe." Environmental Conservation 12, no. 2 (1985): 157–66. http://dx.doi.org/10.1017/s0376892900015575.

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The Communal Lands—occupied by peasant farmers—of the upper catchment of the Sabi River (which drains the southeastern portion of Zimbabwe) are severely deforested, overgrazed, and eroded. Siltation of the river channel has increased the risk of overbank flooding at a downstream irrigation scheme, and a rise in annual outflow from the catchment over the last three decades has additional implications for irrigation development, as well as for the availability of ground-water reserves in the areas of dryland peasant farming.In a study area within one of the Communal Lands, the average rate of soil loss from fields of gentle slope is estimated to be such that the next generation of peasant farmers will be unable to achieve crop-yields above a very low ‘subsistence’ level. The degraded environment is the inevitable consequence of the expansion of a primitive system of cultivation—in a region of low inherent potential for crop production—under the pressure of rapid population growth. While the peasants are aware of many of the consequences of their exploitative methods of land-use, and recognize the importance of basic conservation measures such as erosion-control terraces, they generally feel that remedial action is beyond their means.The effective implementation of available technical solutions to the deterioration of the land resources, will depend upon the provision of greater financial incentives for intensified production, as well as upon more positive political influences, than exist at present. The eventual stabilization of the situation is achievable only if population growth is reduced; but much might be done to improve production, and promote conservation, through field research into appropriate farming systems for peasant agriculture in the Sabi catchment and similar environments.

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Madden, M., M. Karidozo, W. Langbauer, F. Osborn, A. Presotto, and R. Parry. "GEOSPATIAL ASSESSMENT OF HUMAN-WILDLIFE-ENVIRONMENT INTERACTIONS FOR SPATIAL DECISION SUPPORT." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B4-2021 (June 30, 2021): 281–85. http://dx.doi.org/10.5194/isprs-archives-xliii-b4-2021-281-2021.

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Abstract. Human-Elephant Conflict (HEC) is a global concern that requires geospatial data collection, analysis and geovisualization for decision support and mitigation. Bull African elephants, (Loxodonata africana), are often responsible for breaking fences, raiding crops and causing economic hardship in local communities in Botswana, Zimbabwe and Zambia. Methods for monitoring and understanding elephant movements are needed to mitigate conflict, find ways for coexistence and secure the future of Africa’s elephant populations. Researchers from academia and conservation organizations are partnering with decision makers and scientists of the Zimbabwe Department of National Park and Wild Life Management (PWMA) to track the movement of 15 bull elephants in the general area of Victoria Falls to analyse spatio-temporal patterns of elephant behaviour related to climatic factors, habitat conditions and changing land uses. Spatial decision support for local famers, resource managers and planners will assist in avoiding agricultural expansion and urban development that coincides with elephant corridors and access to water resources.

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Frischen, Janna, Isabel Meza, Daniel Rupp, Katharina Wietler, and Michael Hagenlocher. "Drought Risk to Agricultural Systems in Zimbabwe: A Spatial Analysis of Hazard, Exposure, and Vulnerability." Sustainability 12, no. 3 (2020): 752. http://dx.doi.org/10.3390/su12030752.

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The devastating impacts of drought are fast becoming a global concern. Zimbabwe is among the countries more severely affected, where drought impacts have led to water shortages, declining yields, and periods of food insecurity, accompanied by economic downturns. In particular, the country’s agricultural sector, mostly comprised of smallholder rainfed systems, is at great risk of drought. In this study, a multimethod approach is applied, including a remote sensing-based analysis of vegetation health data from 1989–2019 to assess the drought hazard, as well as a spatial analysis combined with expert consultations to determine drought vulnerability and exposure of agricultural systems. The results show that droughts frequently occur with changing patterns across Zimbabwe. Every district has been affected by drought during the past thirty years, with varying levels of severity and frequency. Severe drought episodes have been observed in 1991–1992, 1994–1995, 2002–2003, 2015–2016, and 2018–2019. Drought vulnerability and exposure vary substantially in the country, with the south-western provinces of Matabeleland North and South showing particularly high levels. Assessments of high-risk areas, combined with an analysis of the drivers of risk, set the path towards tailor-made adaptation strategies that consider drought frequency and severity, exposure, and vulnerability.

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SENAPATI, ABHISHEK, TRIDIP SARDAR, and JOYDEV CHATTOPADHYAY. "A CHOLERA METAPOPULATION MODEL INTERLINKING MIGRATION WITH INTERVENTION STRATEGIES — A CASE STUDY OF ZIMBABWE (2008–2009)." Journal of Biological Systems 27, no. 02 (2019): 185–223. http://dx.doi.org/10.1142/s0218339019500098.

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Cholera is a water-borne disease and a major threat to human society affecting about 3–5 million people annually. A considerable number of research works have already been done to understand the disease transmission route and preventive measures in spatial or non-spatial scale. However, how the control strategies are to be linked up with the human migration in different locations in a country are not well studied. The present investigation is carried out in this direction by proposing and analyzing cholera meta-population models. The basic dynamical properties including the domain basic reproduction number are studied. Several important model parameters are estimated using cholera incidence data (2008–2009) and inter-provincial migration data from Census 2012 for the five provinces in Zimbabwe. By defining some migration index, and interlinking these indices with different cholera control strategies, namely, promotion of hand-hygiene and clean water supply and treatment, we carried out an optimal cost effectiveness analysis using optimal control theory. Our analysis suggests that there is no need to provide control measures for all the five provinces, and the control measures should be provided only to those provinces where in-migration flow is moderate. We also observe that such selective control measures which are also cost effective may reduce the overall cases and deaths.

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F, Majeke, Mubvuma S M T, J. Chirima, K. Makaza, T. Hungwe R. Gwazan, Nyoni, and Hove-Musekwa D. "Use of Linear Programming Model to Determine the Optimum Cropping Pattern for an Irrigation Scheme in Masvingo, Zimbabwe." Journal of Management and Science 1, no. 4 (2013): 450–52. http://dx.doi.org/10.26524/jms.2013.56.

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Agricultural systems are often faced by challenges such as crop selection and irrigation planning which can be formulated as optimization problems. Decisions have to be made on the proper set of crops to be cultivated and a proper irrigation scheme. The objectives of such decisions are to maximize net profit or to minimize water waste. In this study, a linear programming model was developed that helped to determine the optimal cropping pattern for an irrigation scheme in Masvingo, Zimbabwe. Crops which considered were wheat, sugar beans for winter and cotton and maize for summer for the 2012/13 agricultural season. The linear programming model was solved by using Microsoft Excel (2007). The model recommended no production of wheat and cotton. Sugar beans and maize gained acreage by 50 percent and 88 percent respectively. On the whole, the optimal cropped acreage did not change as compared to the existing cropping plan. As a result of the optimal solution, a farmer‘s income could be increased by $1,668.60. The optimal income increased from existing level of $1,919.40 to $3,588.00 showing an improvement of 87 percent. The results show that LP models solutions are worthy implementing.

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Ndaimani, Henry, Paradzayi Tagwireyi, Lovelater Sebele, and Hillary Madzikanda. "An Ecological Paradox: The African Wild Dog (Lycaon Pictus) Is Not Attracted to Water Points When Water Is Scarce in Hwange National Park, Zimbabwe." PLOS ONE 11, no. 1 (2016): e0146263. http://dx.doi.org/10.1371/journal.pone.0146263.

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MASHINGAIDZE, N., P. BELDER, S. TWOMLOW, L. Hove, and M. MOYO. "IMPROVING MAIZE (ZEA MAYS L.) PERFORMANCE IN SEMI-ARID ZIMBABWE THROUGH MICRO-DOSING WITH AMMONIUM NITRATE TABLETS." Experimental Agriculture 49, no. 2 (2012): 179–96. http://dx.doi.org/10.1017/s0014479712001020.

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SUMMARYAlthough the application of small quantities of nitrogen (N) fertiliser has improved cereal yields on low-input farms in semi-arid Zimbabwe, the practice is reported to be laborious and time-consuming by farmers. In an effort to make micro-dosing less labour-intensive and more precise, an ammonium nitrate (AN) tablet, the equivalent of a micro-dose of prill AN (28 kg N ha−1) applied per maize plant, was developed by International Crops Research Institute for the Semi-Arid Tropics in collaboration with Agri-Seeds, Zimbabwe. This study characterized the physical stability, chemical (N% and solubility) and agronomic performance of AN tablets compared with prill AN. Only 10% of tablets broke when dropped from 2 m, showing that they are physically stable and can handle rough treatment. The N content in the tablets (33.3%) was comparable to that in prill AN (34.6%). However, the tablet formulation took twice as long to dissolve than prill AN when placed on a wet soil. Despite this difference in solubility, simple leaching column experiments suggest that less than 2% of the total AN applied was lost due to leaching. Agronomic trials were superimposed on the paired-plot demonstrations used to promote micro-dosing and the conservation agriculture tillage technique of planting basins from 2005 to 2008. Each tillage (plough and basins) plot was subdivided into three sub-plots on which no AN, prill AN and tableted AN treatments were superimposed. Maize was planted and management of plots was left to farmers. Micro-dosing with either prill or tableted AN significantly (p < 0.001) increased maize grain yield by over 40% in all seasons for planting basins. However, on the ploughed plot there was no yield benefit to using either AN formulation in the season with the lowest rainfall (2006–2007). There was no significant difference in grain yield and agronomic N use efficiency between prill and tableted AN formulations except for the 2005–2006 season in planting basins. During this season, in planting basins, tableted AN had significantly (p < 0.001) higher rainwater productivity than prill AN, which translated into greater grain yield. In addition, the maximum benefit to micro-dosing was observed to accrue when combined with water harvesting techniques such as planting basins. An observation supported by the host farmers, who in the second and third seasons chose to apply available basal soil fertility amendments to the basin plots over the flat plots. Thus, AN tablets if available at an affordable price can be used by smallholder farmers to more precisely apply N fertiliser. Future work should focus on the labour issues of micro-dosing, and making cost-effective tablets available to resource-poor farmers and also addressing other limiting soil nutrients.

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Wellington, Michael J., and Luigi J. Renzullo. "High-Dimensional Satellite Image Compositing and Statistics for Enhanced Irrigated Crop Mapping." Remote Sensing 13, no. 7 (2021): 1300. http://dx.doi.org/10.3390/rs13071300.

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Accurate irrigated area maps remain difficult to generate, as smallholder irrigation schemes often escape detection. Efforts to map smallholder irrigation have often relied on complex classification models fitted to temporal image stacks. The use of high-dimensional geometric median composites (geomedians) and high-dimensional statistics of time-series may simplify classification models and enhance accuracy. High-dimensional statistics for temporal variation, such as the spectral median absolute deviation, indicate spectral variability within a period contributing to a geomedian. The Ord River Irrigation Area was used to validate Digital Earth Australia’s annual geomedian and temporal variation products. Geomedian composites and the spectral median absolute deviation were then calculated on Sentinel-2 images for three smallholder irrigation schemes in Matabeleland, Zimbabwe, none of which were classified as areas equipped for irrigation in AQUASTAT’s Global Map of Irrigated Areas. Supervised random forest classification was applied to all sites. For the three Matabeleland sites, the average Kappa coefficient was 0.87 and overall accuracy was 95.9% on validation data. This compared with 0.12 and 77.2%, respectively, for the Food and Agriculture Organisation’s Water Productivity through Open access of Remotely sensed derived data (WaPOR) land use classification map. The spectral median absolute deviation was ranked among the most important variables across all models based on mean decrease in accuracy. Change detection capacity also means the spectral median absolute deviation has some advantages for cropland mapping over indices such as the Normalized Difference Vegetation Index. The method demonstrated shows potential to be deployed across countries and regions where smallholder irrigation schemes account for large proportions of irrigated area.

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Mlambo, Sibonani Sandra, Beaven Utete, Reagan Mudziwapasi, Tashian Silibaziso Ncube, Blessing Nyamupingidza, and Chipo Mungenge. "Passive Biomonitoring Using Integrated Hepatic Oxidative Stress Biomarkers and Gonadal Histopathology in Oreochromis Niloticus From Lake Manyame, Zimbabwe." Aquatic Science and Technology 9, no. 1 (2020): 25. http://dx.doi.org/10.5296/ast.v9i1.17118.

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The aquatic environment is particularly vulnerable to the effects of contaminants as effluents from municipal and industrial wastewater continually add numerous harmful exogenous compounds. Lake Manyame is a peri-urban freshwater reservoir that is subject to municipal and industrial discharge as well as agricultural run-off. Adult Nile tilapia (Oreochromis niloticus) were sampled from L. Manyame during low-flow and high-flow seasons from selected locations. The samples were processed in the field for histology and biochemical analysis of selected biomarkers of oxidative stress. Induction of reduced glutathione (GSH), carboxylesterase (CES) and malondialdehyde (MDA) was evident at all the sites. There were no significant variations between sites except in the last low flow season and there was an upward trend between the first season and the subsequent sampling periods. Gonadal histology did not show occurrence of any intersex as a sign of endocrine disruption. The prevalence of histological lesions in the gonads was highest in the last sampling seasons, suggesting a progressive deterioration of water quality over time.

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Marambanyika, Thomas, Upenyu Naume Mupfiga, Tatenda Musasa, and Keto Ngwenya. "Local Perceptions on the Impact of Drought on Wetland Ecosystem Services and Associated Household Livelihood Benefits: The Case of the Driefontein Ramsar Site in Zimbabwe." Land 10, no. 6 (2021): 587. http://dx.doi.org/10.3390/land10060587.

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The paper assesses local people’s perceptions on the impact of drought on wetland ecosystem services and the associated household livelihood benefits, focusing on the Driefontein Ramsar site in Chirumanzu district, Zimbabwe. Field data were obtained using a questionnaire from 159 randomly selected households, key informant interviews and transect walks. The study findings show that provisioning, regulating and supporting services are severely affected by a high frequency of drought, occurring at least once every two years, compared to cultural services. There is a reduction in water for domestic use and crop farming, pasture for livestock, fish, thatch grass and ground water recharge. Although cultural services such as traditional rain-making ceremonies and spiritual enhancement are largely unaffected by drought, the wetland’s aesthetic value was reported to be diminishing. The habitat and breeding areas of endangered crane bird species were perceived to be dwindling, affecting their reproduction. All the household heads are not formally employed and largely depend on the wetland resources for food and income. However, drought is adversely affecting wetland-based agricultural activities that are key pillars of the households’ economy. Therefore, there is a need for alternative livelihood strategies that enable local communities to adapt to drought impacts without exerting more pressure on the declining wetland resources.

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Tafangenyasha, Clifford, and Lawrence T. Dube. "An Investigation of the Impacts of Agricultural Runoff on the Water Quality and Aquatic Organisms in a Lowveld Sand River System in Southeast Zimbabwe." Water Resources Management 22, no. 1 (2007): 119–30. http://dx.doi.org/10.1007/s11269-006-9147-7.

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Chingombe, Wisemen, and Happwell Musarandega. "Understanding the Logic of Climate Change Adaptation: Unpacking Barriers to Climate Change Adaptation by Smallholder Farmers in Chimanimani District, Zimbabwe." Sustainability 13, no. 7 (2021): 3773. http://dx.doi.org/10.3390/su13073773.

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Smallholder farmers in Chimanimani District, Zimbabwe, have grappled for a long time with the effects of climate change despite the locally and externally driven resilience-building initiatives in place. This paper adopts a qualitative approach to explore the encountered adaptation barriers. Smallholder farmers, Agricultural Technical and Extension Services (AGRITEX) officers, and the traditional leadership fraternity were randomly selected from the district’s 22 rural wards as study participants. Data were solicited using focus group discussions and face-to-face interviews that were corroborated by researcher observation methods. The data were analysed using thematic content analysis of key perspectives drawn from smallholder farmers, traditional leaders, and extension officers who work with farmers. What was unveiled is an assortment of barrier dynamics related to climate, finance, infrastructure, generational change, water resources, inefficient bureaucracy, gender inequality, and health barriers. Vensim PLE 7.3 software was used to illustrate barrier components as they act together to cripple smallholder farmers’ efforts to raise their adaptive capacity. Adaptation barriers are complex and, therefore, cannot be addressed using policies that are fragmented. The paper recommends a multidimensional approach by policy makers to analyse adaptive barriers to build more climate resilience within smallholder farmer communities.

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Bessant, Leslie, and William A. Masters. "Government and Agriculture in Zimbabwe." International Journal of African Historical Studies 29, no. 1 (1996): 155. http://dx.doi.org/10.2307/221436.

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35

van Aarde, Rudi J., Stuart L. Pimm, Robert Guldemond, Ryan Huang, and Celesté Maré. "The 2020 elephant die-off in Botswana." PeerJ 9 (January 11, 2021): e10686. http://dx.doi.org/10.7717/peerj.10686.

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The cause of deaths of 350 elephants in 2020 in a relatively small unprotected area of northern Botswana is unknown, and may never be known. Media speculations about it ignore ecological realities. Worse, they make conjectures that can be detrimental to wildlife and sometimes discredit conservation incentives. A broader understanding of the ecological and conservation issues speaks to elephant management across the Kavango–Zambezi Transfrontier Conservation Area that extends across Botswana, Namibia, Angola, Zambia, and Zimbabwe. Our communication addresses these. Malicious poisoning and poaching are unlikely to have played a role. Other species were unaffected, and elephant carcases had their tusks intact. Restriction of freshwater supplies that force elephants to use pans as a water source possibly polluted by blue-green algae blooms is a possible cause, but as yet not supported by evidence. No other species were involved. A contagious disease is the more probable one. Fences and a deep channel of water confine these elephants’ dispersal. These factors explain the elephants’ relatively high population growth rate despite a spell of increased poaching during 2014–2018. While the deaths represent only ~2% of the area’s elephants, the additive effects of poaching and stress induced by people protecting their crops cause alarm. Confinement and relatively high densities probably explain why the die-off occurred only here. It suggests a re-alignment or removal of fences that restrict elephant movements and limits year-round access to freshwater.

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van Aarde, Rudi J., Stuart L. Pimm, Robert Guldemond, Ryan Huang, and Celesté Maré. "The 2020 elephant die-off in Botswana." PeerJ 9 (January 11, 2021): e10686. http://dx.doi.org/10.7717/peerj.10686.

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The cause of deaths of 350 elephants in 2020 in a relatively small unprotected area of northern Botswana is unknown, and may never be known. Media speculations about it ignore ecological realities. Worse, they make conjectures that can be detrimental to wildlife and sometimes discredit conservation incentives. A broader understanding of the ecological and conservation issues speaks to elephant management across the Kavango–Zambezi Transfrontier Conservation Area that extends across Botswana, Namibia, Angola, Zambia, and Zimbabwe. Our communication addresses these. Malicious poisoning and poaching are unlikely to have played a role. Other species were unaffected, and elephant carcases had their tusks intact. Restriction of freshwater supplies that force elephants to use pans as a water source possibly polluted by blue-green algae blooms is a possible cause, but as yet not supported by evidence. No other species were involved. A contagious disease is the more probable one. Fences and a deep channel of water confine these elephants’ dispersal. These factors explain the elephants’ relatively high population growth rate despite a spell of increased poaching during 2014–2018. While the deaths represent only ~2% of the area’s elephants, the additive effects of poaching and stress induced by people protecting their crops cause alarm. Confinement and relatively high densities probably explain why the die-off occurred only here. It suggests a re-alignment or removal of fences that restrict elephant movements and limits year-round access to freshwater.

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Gomo, Fortune Faith, Christopher Macleod, John Rowan, Jagadeesh Yeluripati, and Kairsty Topp. "Supporting better decisions across the nexus of water, energy and food through earth observation data: case of the Zambezi basin." Proceedings of the International Association of Hydrological Sciences 376 (February 1, 2018): 15–23. http://dx.doi.org/10.5194/piahs-376-15-2018.

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Abstract. The water–energy–food (WEF) nexus has been promoted in recent years as an intersectional concept designed to improve planning and regulatory decision-making across the three sectors. The production and consumption of water, energy and food resources are inextricably linked across multiple spatial scales (from the global to the local), but a common feature is competition for land which through different land management practices mediates provisioning ecosystem services. The nexus perspective seeks to understand the interlinkages and use systems-based thinking to frame management options for the present and the future. It aims to highlight advantage and minimise damaging and unsustainable outcomes through informed decisions regarding trade-offs inclusive of economic, ecological and equity considerations. Operationalizing the WEF approach is difficult because of the lack of complete data, knowledge and observability – and the nature of the challenge also depends on the scale of the investigation. Transboundary river basins are particularly challenging because whilst the basin unit defines the hydrological system this is not necessarily coincident with flows of food and energy. There are multiple national jurisdictions and geopolitical relations to consider. Land use changes have a profound influence on hydrological, agricultural, energy provisioning and regulating ecosystem services. Future policy decisions in the water, energy and food sectors could have profound effects, with different demands for land and water resources, intensifying competition for these resources in the future. In this study, we used Google Earth Engine (GEE) to analyse the land cover changes in the Zambezi river basin (1.4 million km2) from 1992 to 2015 using the European Space Agency annual global land cover dataset. Early results indicate transformative processes are underway with significant shifts from tree cover to cropland, with a 4.6 % loss in tree cover and a 16 % gain in cropland during the study period. The changes were found to be occurring mainly in the eastern (Malawi and Mozambique) and southern (Zimbabwe and southern Zambia) parts of the basin. The area under urban land uses was found to have more than doubled during the study period gearing urban centres increasingly as the foci for resource consumption. These preliminary findings are the first step in understanding the spatial and temporal interlinkages of water, energy and food by providing reliable and consistent evidence spanning the local, regional, national and whole transboundary basin scale.

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French, J. M., R. A. Stamler, J. J. Randall, and N. P. Goldberg. "First Report of Phytophthora nicotianae on Bulb Onion in the United States." Plant Disease 95, no. 8 (2011): 1028. http://dx.doi.org/10.1094/pdis-01-11-0048.

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Phytophthora nicotianae (synonym P. parasitica) Breda de Haan was isolated from recently harvested onion bulbs (Allium cepa) in cold storage from a commercial field in southern New Mexico. Deteriorating, water-soaked tissue from the center of four bulbs was plated onto water agar and incubated at room temperature. After 72 h, cultures of Phytophthora (identified by the presence of coenocytic hyphae and papillate sporangia) were isolated and transferred to V8 agar amended with ampicillin (250 mg/liter), rifampicin (10 mg/liter), and pimaricin (0.2% wt/vol). Isolates were identified as P. nicotianae based on morphological characteristics and DNA analysis. Sporangia were sharply papilliate, noncaducous, and ovoid to spherical. The average sporangium size was 45.9 × 39.9 μm with a length-to-width ratio of 1.15. Clamydospores, both terminal and intercalary, were spherical to ovoid and averaged 37.2 × 35.2 μm (2). PCR from whole-cell extracts was performed on four cultured isolates from the infected onion tissue using previously described primers ITS4 and ITS6, which amplify the 5.8S rDNA and ITS1 and ITS2 internal transcribed spacers (1,4). A band of approximately 890 bp was amplified and directly sequenced (GenBank Accession No. HQ398876). A BLAST search of the NCBI total nucleotide collection revealed a 100% similarity to multiple P. nicotianae isolates previously sequenced (1). To confirm the pathogenicity of the isolates, onion seedlings were inoculated with 25 ml of P. nicotionae zoospore solution (15,000 zoospores/ml). Necrosis of leaf tissue and seedling death was observed 5 days postinoculation. P. nicotianae was reisolated from the infected onion seedlings and the ITS region was sequenced to confirm its identity. P. nicotianae was previously reported in bulb onion from Australia, Taiwan (Formosa), and Zimbabwe (Rhodesia) (2). P. nicotianae was reported on bunching onions (A. fistulosum) in Hawaii in 1989 (3). Onions are an important crop in New Mexico with a total production value of 47 million dollars in 2008 (NM Agriculture Statistics 2008). This discovery of a potentially significant postharvest disease poses a threat to the onion industry in New Mexico. To our knowledge, this is the first report of P. nicotianae in bulb onion in the United States and the first report of P. nicotianae in New Mexico on any crop. References: (1) D. E. L. Cooke and J. M. Duncan. Mycol. Res. 101:667, 1997. (2) D. C. Erwin and O. K. Ribeiro. Page 56 in: Phytophthora Diseases Worldwide. The American Phytopathological Society, St Paul, MN, 1996. (3) R. D. Raabe et al. Information Text Series No. 22. University of Hawaii. Hawaii Inst. Trop. Agric. Human Resources, 1981. (4) T. J. White et al. Page 315 in: PCR Protocols: A Guide to Methods and Applications. M. A. Innis et al., eds. Academic Press, San Diego, 1990.

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Drakakis-Smith, David. "Mbiba Beacon, "Urban Agriculture in Zimbabwe" (Book Review)." Third World Planning Review 18, no. 1 (1996): 107. http://dx.doi.org/10.3828/twpr.18.1.r3227h5h23326380.

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40

Thompson, Guy, Dickson A. Mungazi, and L. Kay Walker. "Colonial Agriculture for Africans: Emory Alvord's Policy in Zimbabwe." African Studies Review 42, no. 3 (1999): 110. http://dx.doi.org/10.2307/525227.

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41

Owen, Mafongoya. "CIVIC SOCIETY'S INTERVENTION ON PEASANTRY AGRICULTURE IN RURAL ZIMBABWE." Russian Journal of Agricultural and Socio-Economic Sciences 19, no. 7 (2013): 3–12. http://dx.doi.org/10.18551/rjoas.2013-07.01.

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42

Atkins, Jon, and Colin Thirtle. "The productivity of communal agriculture in Zimbabwe, 1975–90." Oxford Agrarian Studies 23, no. 2 (1995): 99–115. http://dx.doi.org/10.1080/13600819508424092.

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43

Thirtle, Colin, Jon Atkins, Paul Bottomley, Nancy Gonese, and Jones Govereh. "The productivity of commercial agriculture in Zimbabwe, 1970–89." Journal of International Development 5, no. 2 (1993): 193–205. http://dx.doi.org/10.1002/jid.3380050211.

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44

Munslow, Barry. "Prospects for the socialist transition of agriculture in Zimbabwe." World Development 13, no. 1 (1985): 41–58. http://dx.doi.org/10.1016/0305-750x(85)90065-8.

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45

Bessant, Leslie, Dickson A. Mungazi, and L. Kay Walker. "Colonial Agriculture for Africans: Emory Alvord's Policy in Zimbabwe." International Journal of African Historical Studies 32, no. 1 (1999): 233. http://dx.doi.org/10.2307/220870.

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46

Zaporozec, Alexander. "Water and agriculture." GeoJournal 15, no. 3 (1987): 231–32. http://dx.doi.org/10.1007/bf00213450.

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47

Fereres, E. "Water-limited agriculture." European Journal of Agronomy 21, no. 4 (2004): 399–400. http://dx.doi.org/10.1016/j.eja.2004.07.002.

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Marongwe, Lungowe Sepo, Karsto Kwazira, Michael Jenrich, Christian Thierfelder, Amir Kassam, and Theodor Friedrich. "An African success: the case of conservation agriculture in Zimbabwe." International Journal of Agricultural Sustainability 9, no. 1 (2011): 153–61. http://dx.doi.org/10.3763/ijas.2010.0556.

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Motsi, Kudakwashe E., Edward Chuma, and Billy B. Mukamuri. "Rainwater harvesting for sustainable agriculture in communal lands of Zimbabwe." Physics and Chemistry of the Earth, Parts A/B/C 29, no. 15-18 (2004): 1069–73. http://dx.doi.org/10.1016/j.pce.2004.08.008.

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Marshall, Robert. "Urban agriculture in Zimbabwe; Implications for urban management and poverty." Habitat International 21, no. 3 (1997): 340–41. http://dx.doi.org/10.1016/s0197-3975(97)88097-6.

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Journal articles on the topic 'Water in agriculture. Zimbabwe'

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