Relevant bibliographies by topics / Rice management

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Rice management'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Rice management"

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., F. C. Oad, Pompe Sta Cruz ., N. Memon ., N. L. Oad ., and Zia-Ul-Hassan . "Rice Ratooning Management." Journal of Applied Sciences 2, no. 1 (December 15, 2001): 29–35. http://dx.doi.org/10.3923/jas.2002.29.35.

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Panda, D., AK Nayak, and S. Mohanty. "Nitrogen management in rice." Oryza-An International Journal on Rice 56, Special Issue (May 29, 2019): 125–35. http://dx.doi.org/10.35709/ory.2019.56.s.5.

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Nitrogen is the one of most limiting nutrient for rice production, and in India rice cultivation alone accounts approximately 37% of the total fertilizer-N consumption in the year 1917-18. However, 60-70% of applied N is lost from the rice ecosystem system in the form of reactive N species such as ammonia (NH3), nitrous oxide (N2O), nitric oxide (NO), nitrogen dioxide (NO2) and nitrate (NO3) through various processes. Hence enhancing N use efficiency through improved N management is of greater importance for ensuring food security and environmental sustainability. The decisions on optimum level, time, form and method of N application are crucial to an efficient N management strategy. Earlier studies suggested blanket fertilizer recommendations for different rice ecosystems and soil test based fertilizer applications. Subsequently, innovative methods of N application including deep placement of urea super granule in reduced zone, subsurface incorporation of urea through farmer friendly methods were also recommended Recently several advancements have been made in N management practices for rice crop such as site specific N management, real time N management using leaf colour chart (LCC) and customised LCC, enhanced efficiency N fertilizers (EENF) using N transformation regulators and GIS and remote sensing (RS) - based N application technologies. The objective of this paper is to comprehensively discuss about the established and emerging N management options for improving yield, N use efficiency and environmental sustainability of rice.
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Panda, D., AK Nayak, and S. Mohanty. "Nitrogen management in rice." Oryza-An International Journal on Rice 56, Special (May 29, 2019): 125–35. http://dx.doi.org/10.35709/ory.2019.56.spl.5.

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Nitrogen is the one of most limiting nutrient for rice production, and in India rice cultivation alone accounts approximately 37% of the total fertilizer-N consumption in the year 1917-18. However, 60-70% of applied N is lost from the rice ecosystem system in the form of reactive N species such as ammonia (NH3), nitrous oxide (N2O), nitric oxide (NO), nitrogen dioxide (NO2) and nitrate (NO3) through various processes. Hence enhancing N use efficiency through improved N management is of greater importance for ensuring food security and environmental sustainability. The decisions on optimum level, time, form and method of N application are crucial to an efficient N management strategy. Earlier studies suggested blanket fertilizer recommendations for different rice ecosystems and soil test based fertilizer applications. Subsequently, innovative methods of N application including deep placement of urea super granule in reduced zone, subsurface incorporation of urea through farmer friendly methods were also recommended Recently several advancements have been made in N management practices for rice crop such as site specific N management, real time N management using leaf colour chart (LCC) and customised LCC, enhanced efficiency N fertilizers (EENF) using N transformation regulators and GIS and remote sensing (RS) - based N application technologies. The objective of this paper is to comprehensively discuss about the established and emerging N management options for improving yield, N use efficiency and environmental sustainability of rice.
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Rothschild, G. "Rice insects; management strategies." Agriculture, Ecosystems & Environment 48, no. 2 (March 1994): 190–94. http://dx.doi.org/10.1016/0167-8809(94)90090-6.

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Bulbule, A. V., S. C. Talashilkar, and N. K. Savant. "Integrated rice straw–urea management for transplanted rice." Journal of Agricultural Science 127, no. 1 (August 1996): 49–55. http://dx.doi.org/10.1017/s0021859600077364.

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SUMMARYFour field experiments were conducted over the 1992 and 1993 seasons (southwest monsoon seasons, June–October) in the warm subhumid tropical region on the west coast of the Maharashtra State, India. The objective was to investigate the effect of recycling limited amounts of rice straw (RS) (as a source of K and Si) integrated with the use of prilled urea (PU) and urea briquettes (UB) at 60 kg N/ha on the growth and yield of rainfed transplanted rice (Oryza sativa L.). The management practice, consisting of basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills) immediately after transplanting using a modified 20 × 20 cm spacing, produced a significantly higher grain yield (average increase of 1·3 t/ha) and straw yield (average increase of 1·1 t/ha) than did the RS practice integrated with two equal split applications of PU at the same N rate and hill spacing. The additional yields were attributed to the increase of total and productive tillers/m2 and panicle weight. The results indicate the potential of the integrated RS–UB management for increasing yields of rainfed transplanted rice in the warm subhumid tropical zone.
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Higuchi, Hiroya. "Ecology and Management of Rice Bugs Causing Pecky Rice." Japanese Journal of Applied Entomology and Zoology 54, no. 4 (2010): 171–88. http://dx.doi.org/10.1303/jjaez.2010.171.

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Agustina, H., BI Setiawan, M. Solahuddin, and Sugiyanta. "SRI (Rice Intensification System) water management of rice productivity." IOP Conference Series: Earth and Environmental Science 542 (August 7, 2020): 012051. http://dx.doi.org/10.1088/1755-1315/542/1/012051.

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Sebastian, Abin, and Majeti Prasad. "Trace Element Management in Rice." Agronomy 5, no. 3 (August 18, 2015): 374–404. http://dx.doi.org/10.3390/agronomy5030374.

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Rodrigues, Fabrício A., and Lawrence E. Datnoff. "Silicon and rice disease management." Fitopatologia Brasileira 30, no. 5 (October 2005): 457–69. http://dx.doi.org/10.1590/s0100-41582005000500001.

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The element silicon (Si) is not considered an essential nutrient for plant function. Nevertheless, Si is absorbed from soil in large amounts that are several fold higher than those of other essential macronutrients in certain plant species. Its beneficial effects have been reported in various situations, especially under biotic and abiotic stress conditions. The most significant effect of Si on plants, besides improving their fitness in nature and increasing agricultural productivity, is the restriction of parasitism. There has been a considerable amount of research showing the positive effect of Si in controlling diseases in important crops. Rice (Oryza sativa), in particular, is affected by the presence of Si, with diseases such as blast, brown spot and sheath blight becoming more severe on rice plants grown in Si-depleted soils. The hypothesis underlying the control of some diseases in both mono- and di-cots by Si has been confined to that of a mechanical barrier resulting from its polymerization in planta. However, some studies show that Si-mediated resistance against pathogens is associated with the accumulation of phenolics and phytoalexins as well as with the activation of some PR-genes. These findings strongly suggest that Si plays an active role in the resistance of some plants to diseases rather than forming a physical barrier that impedes penetration by fungal pathogens.
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Teng, Paul S. "Integrated Pest Management in Rice." Experimental Agriculture 30, no. 02 (April 1994): 115. http://dx.doi.org/10.1017/s001447970002408x.

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Dissertations / Theses on the topic "Rice management"

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Siddeek, Fathima Zeena. "Water management for lowland rice irrigation." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/71183.

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A procedure was developed to estimate optimum irrigation requirements for lowland rice cultivation in Southeast Asia. The procedure uses a water balance equation of semi-stochastic nature to maintain minimum desired water depths in paddy fields at the end of each irrigation period. The procedure estimates weekly pan evaporation (EV) and rainfall (RF) at different probability levels, which is then used to determine weekly irrigation requirements at different probability levels. To illustrate the use of the method, the Kalawewa irrigation scheme in Sri Lanka was selected for demonstration purposes. Different transformations were applied to Rf and EV data in an attempt to normalize these variates and to obtain a unique distribution to describe their variations. Statistical analysis of weekly EV arid RF showed that the power transformation was best able to transform the weekly RF and EV data to normality. Comparison of the use of the model and current system practices showed that a significant amount of water could be saved even when the system was operated at high probability levels (90% reliability). The irrigation water required when the system was operated at the 72% probability level was about 21% less than the amount required when the system was operated at 90% probability level during some weeks. The EXTRAN flow routing model was used to simulate water flow in the upper reaches of the main canal system for varying discharges at the head gate each day. The simulated water depths were used to determine the gate settings required at the turnout structures to divert the desired amount of irrigation water into the turnout areas. The flow simulation for the demonstration area, showed that it was not possible to regulate irrigation water from the main reservoir to meet daily demands at all the turnouts. This was due to the large distances between the regulating reservoir and turnouts that caused appreciable time lag for the flow to reach the turnouts farthest from the regulating reservoir.
Ph. D.
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Fall, Thioro. "Soil Management for Improved Rice Production in Casamance, Senegal." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81457.

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Rice is a staple crop for many countries around the world, and is one of the top three food sources globally. Many environments where rice is grown contain stressors likely to limit its growth and yield. In southern Senegal (Casamance region), rice is mainly cultivated in lowlands near estuaries where drought, salinity, acidity, poor soil fertility, and iron toxicity are the main limiting factors. In Casamance, average rice yield for local farmers is 1 to 2 tons per hectare (809 to 1618 pounds per acre), compared to worldwide average yield of more than 4 tons per hectare. The soil where our 2-year experiment (2014 and 2015) was conducted is highly saline-sodic and acidic, and the salt tolerant cultivar we grew yielded 3.4 tons per hectare in 2013. Our main objective was to increase rice yield. The water table height, salinity, and pH were measured weekly during the rice growing season, and the soil was described, sampled, and analyzed to better understand the water and soil resources. Two planting methods were tested: flat planting and planting on beds. Two soil amendments were compared with each planting method: biochar and crushed oyster shells, alone and in combination. An untreated control was included in the experiment. All plots were fertilized. Treatment effects on soil properties and yield were compared in a split-plot design. Plant tissue was sampled for elemental content. The water table was above the surface and was saline during half of the growing season in 2014, and decreased after rice grain head emerged. Planting methods and amendments did not have an effect on yield in 2014, but biochar amendment increased yield in 2015. In 2014, soil salinity and sodium decreased to below toxic levels late in the growing season in the flat plots but not in the bedded plots. Therefore, flat planting is more appropriate in these lowland rice production systems. Soil pH increased from 4.4 to 7.7 in flat planting where biochar+shell was applied. Soil available nutrients such as P, Mn, and Zn were significantly higher in flat planting compared to beds. Toxic levels of Na (> 2000 milligrams per kilogram) were measured in leaves sampled just before flowering. We recommend flat planting and amending soil with biochar in saline-sodic acid-sulfate paddy soils in Casamance to improve rice yield.
Master of Science
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Åberg, Amanda. "Rice yields under water-saving irrigation management : A meta-analysis." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-146786.

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Water scarcity combined with an increasing world population is creating pressure to develop new methods for producing food using less water. Rice is a staple crop with a very high water demand. This study examined the success in maintaining yields under water-saving irrigation management, including alternate wetting and drying (AWD). A meta-analysis was conducted examining yields under various types of water-saving irrigation compared to control plots kept under continuous flooding. The results indicated that yields can indeed be maintained under AWD as long as the field water level during the dry cycles is not allowed to drop below -15 cm, or the soil water potential is not allowed to drop below -10 kPa. Yields can likewise be maintained using irrigation intervals of 2 days, but the variability increases. Midseason drainage was not found to affect yield, though non-flooded conditions when maintained throughout most of the crop season appeared to be detrimental to yields. Increasingly negative effects on yields were found when increasing the severity of AWD or the length of the drainage periods. Potential benefits and drawbacks of water-saving irrigation management with regards to greenhouse gas emissions, soil quality and nutrient losses were discussed to highlight the complexity of the challenges of saving water in rice production.
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Genua, Olmedo Ana. "Modelling sea level rise impacts and the management options for rice production: the Ebro Delta as an example." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/461596.

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Les àrees costaneres han de fer front als riscos creixents relacionats amb la PNM. El Delta de l'Ebre és un ecosistema representatiu de la vulnerabilitat de les zones costaneres a la PNM. La producció d’arròs és la principal activitat econòmica, ocupant un 65 % de la superfície total, és sensible a la PNM, i l'augment de la salinitat del sòl, el factor més limitat de la producció. Per tant, cal analitzar els impactes de la PNM, és a dir, la inundació i la salinització del sòl, i desenvolupar les mesures d'adaptació adequades. Vam construir models espacials (1 × 1 m) sobre les zones més vulnerables a la inundació, pèrdua de sediments, salinitat del sòl i pèrdua de producció d'arròs. Mitjançant l’acoblament de dades SIG amb GLMz, i posteriorment, els models es van executar en diferents escenaris previstos per l'IPCC (AR5) fins a l’any 2100. També vam avaluar la viabilitat d'una mesura d'adaptació innovadora basada en la natura, que consisteix a recuperar els sediments atrapats en els embassaments de la conca a la plana deltaica. L'elevació (inversament) va ser la variable més important a l'hora d'explicar la variació en la salinitat del sòl, els models van predir una disminució de l'índex de producció d'arròs normalitzat (RPI) seguint el gradient d'elevació del delta. Depenent de l'escenari considerat, els models prediuen una reducció del RPI al 2010 del 62.1% al 54,6% per l’any 2100, en l'escenari més conservador (PNM = 0.53 m); i fins al 33.8% per al pitjor dels escenari considerat (PNM = 1.8 m), amb una disminució dels beneficis de fins a 300 € per hectàrea. Per als mateixos escenaris, la superfície d’arrossars inundada va ser del 36-90 %, i la pèrdua de sediment va ser de entre 122 i 418 milions de tones. La mesura d'adaptació proposada, basada en la natura, va tenir un efecte positiu en la producció d'arròs i es pot considerar una opció de gestió innovadora per mantenir els serveis ecosistèmics del Delta de l'Ebre, tot i la PNM. Els nostres models es poden aplicar a altres àrees deltaiques de tot el món, ajudant els agricultors i els ‘stakeholders’ a identificar àrees vulnerables als efectes de la PNM així com a desenvolupar plans de gestió.
Las zonas costeras tienen que hacer frente a los crecientes riesgos relacionados con la subida del nivel del mar (SLR). El Delta del Ebro es un valioso ecosistema representativo de la vulnerabilidad de las zonas costeras al SLR. La producción de arroz, la principal actividad económica de la zona, ocupa ca. el 65% de la superficie total, y es sensible a la SLR, y al aumento de la salinidad del suelo el factor más limitante en el cultivo del arroz. Por tanto, es necesario analizar los impactos de la SLR, es decir, la inundaciones y la salinización del suelo, y desarrollar medidas de adaptación apropiadas. Hemos construido modelos espaciales (1 × 1 m) en áreas propensas a inundación, pérdida de sedimentos, salinización del suelo y pérdida de producción de arroz. Se acoplaron datos de GIS con GLMz y los modelos se realizaron bajo diferentes escenarios predichos por el IPCC (AR5) hasta 2100. También evaluamos la viabilidad de una medida innovadora de adaptación basada en la naturaleza que consiste en reintroducir sedimentos atrapados en embalses de bajo Ebro a la llanura deltaica. La elevación (inversamente relacionada a la salinidad del suelo) fue la variable más importante para explicar la salinidad del suelo, por lo que los modelos predijeron una disminución en el Índice de Producción de Arroz normalizado (RPI) siguiendo el gradiente de elevación del delta. Según el escenario considerado, los modelos predicen una reducción de RPI del 62.1 % en 2010 a 54.6 % en 2100 para el escenario más conservador (SLR = 0.53 m); Y al 33,8 % en el peor escenario considerado (SLR = 1,8 m), con una disminución de los beneficios de hasta 300 €/ha. Para los mismos escenarios, la superficie de los campos de arroz inundados osciló entre 36 y 90 %, y la pérdida de sedimentos de 122 a 418 millones de toneladas. La medida de adaptación propuesta tuvo un efecto positivo en la producción de arroz y puede considerarse como una opción de gestión innovadora para mantener los servicios ecosistémicos del Delta del Ebro a pesar del SLR. Nuestros modelos pueden aplicarse a otras áreas deltaicas en todo el mundo, ayudando a los agricultores y a las partes interesadas a identificar áreas vulnerables a los impactos del SLR y a desarrollar planes de manejo.
Coastal areas have to cope with increasing risks related to SLR. The Ebro Delta is a valuable ecosystem representative of the vulnerability of coastal areas to SLR. Rice production is the main economic activity, occupying ca. 65 % of the total surface is sensitive to SLR, and the increase in soil salinity, the most limiting factor. Thus, it is necessary to analyse the impacts of SLR, i.e. flooding and soil salinization, and to develop appropriate adaptation measures. We built spatial models (1 × 1 m) in areas prone to be flooded, sediment loss, soil salinity, and rice production loss. We coupled data from GIS with GLMz and models were run under different scenarios predicted by IPCC (AR5) up to 2100. We also evaluated the feasibility of an innovative nature-based adaptation measure consisting in reintroducing sediments trapped in basin reservoirs into the delta plain. Elevation (inversely related) was the most important variable in explaining soil salinity, thus, models predicted a decrease in normalized Rice Production Index following the delta elevation gradient. Subjected to the scenario considered, the models predict a RPI reduction from 62.1 % in 2010 to 54.6 % by 2100 in the most conservative scenario (SLR = 0.53 m); and to 33.8 % in the worst considered scenario (SLR = 1.8 m), with a decrease of profit up to 300 € per hectare. For the same scenarios, the flooded rice fields’ area ranged 36-90 %, and the sediment loss 122-418 million tonnes. The nature-based adaptation measure proposed had a positive effect on rice production, and it can be considered as an innovative management option for maintaining the Ebro Delta ecosystem services although SLR. Our models can be applied to other deltaic areas worldwide, helping farmers and stakeholders to identify vulnerable areas to SLR impacts and to develop management plans.
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Joseph, K. D. S. Mervyn. "Physiological and agronomic aspects of rice varietal responses to low and high nitrogen management." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39827.

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Modern rice (Oryza sativa L.) varieties produce very high yields under high input and favorable environments. Limited work has been done to develop plant types suitable for less than optimal environments at moderate N management levels. The objectives of this study were: 1) to examine the relationship between the uptake of N and different leaf characteristics, sink size, and grain yield of three morphologically distinct rice varieties; 2) to examine the CO2 exchange rates (CER) of rice varieties in relation to light, N management, water use efficiencies (WUE), and N use efficiency (NUE): and 3) to determine characteristics of rice varieties that are associated with productive potentials under low N management levels. A greenhouse experiment was conducted in 1989 at Virginia Polytechnic Institute and State University, Blacksburg, VA and a field experiment was conducted in Sri Lanka at two locations in 1990. In the greenhouse experiment three varieties (a traditional, an intermediate, and a modem variety) were grown under four N management (rate and time) treatments: viz 1) a 0 N control, 2) 200 mg N kg⁻¹ of soil split into two applications, 3) 200 mg N kg⁻¹ of soil split into three applications, and 4) 400 mg N kg⁻¹> of soil split into three applications. Competitive use of fertilizer N for the development of either large leaf area or high leaf N content per unit leaf area (LNLA) varied with the rate and timing of N fertilizer application and rice variety. When N supply was limited and early N applications were restricted, the intermediate variety increased LNLA in the flag leaf with little increase in total leaf area of the plant. Specific leaf weight did not differ with N management except for the low value of the N control treatment. Increased N applications reduced stomatal density. Total stomatal number leaf⁻¹ varied little within cultivars indicating that N fertilization enables the leaf to increase leaf area and thereby disperses the fixed number of stomates. Carbon dioxide exchange rates were higher in the flag leaf than lower leaves and were directly correlated to LNLA.
Ph. D.
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Ku, Tsun-Yao. "Educational needs in farm management skills of Taiwan's core rice farmers /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3074418.

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Nguyen, Trung Thanh, Hong Nhat Nguyen, Thi Quynh Anh Nguyen, Phuoc Toan Phan, and Nhat Huy Nguyen. "Emission and management for rice husk ash in An Giang Province." Technische Universität Dresden, 2019. https://tud.qucosa.de/id/qucosa%3A70817.

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An Giang province is one of the largest rice producer regions in Vietnam with 600,000 hectares of paddy field and 4 million tons of rice production every year. The rice milling industry generates a huge amount of rice husk (~23% of paddy rice). The rice husk is currently used as fuel around the province generating rice husk ash (RHA) which causes environmental and health issues. This study focuses on surveying and analyzing the current situation for utilization, management, treatment, and awareness of enterprises and community about generated RHA via a household investigation method. The results showed that, in average, a factory generates 862.4 tons of RHA per year, whereas half of them are reused or are sold for re-utilization in other factories, 56.3% are disposed in the private landfill of the factory, and 1.6 to 6.3 % are directly disposed to nearby rivers or in soil. Most of the interviewed citizens reported that they were aware of the RHA impact on the environment nevertheless, only 2% knew that RHA can be re-utilized for other purposes. Therefore, it is necessary to raise public awareness about the reuse and utilization of RHA to reduce the environmental impact and contribute to the sustainable development of the rice production.
Tỉnh An Giang là một trong những vựa lúa lớn nhất Việt Nam, với diện tích khoảng 600.000 ha và sản lượng gần 4 triệu tấn/năm. Cùng với lúa, lượng trấu phát sinh từ quá trình xay xát đang được tái sử dụng làm nhiên liệu đốt cho các quá trình sản xuất khác ở địa phương. Tuy nhiên lượng tro sau quá trình đốt nhiên liệu trấu cũng đang tạo nên một áp lực lên chất lượng môi trường. Do vậy, nghiên cứu này tập trung vào việc khảo sát và phân tích hiện trạng sử dụng, quản lý, xử lý và nhận thức của cơ sở sản xuất hay cộng đồng đối với vấn đề phát thải tro trấu thông qua phương pháp điều tra thực tế. Kết quả cho thấy trung bình mỗi cơ sở phát sinh 862,4 tấn tro trấu/năm với khoảng phân nửa trong số đó được tái sử dụng, 56,3% xử lý bằng cách chôn lấp; 1,6% đến 6,3% xử lý bằng cách đổ bỏ. Hầu hết những người được phỏng vấn biết việc phát thải tro trấu có ảnh hưởng đến chất lượng môi trường, tuy nhiên chỉ có 2% hộ nhận thức được tro trấu có thể tái sử dụng cho các mục đích khác. Điều này cho thấy cần có biện pháp nâng cao nhận thức của cộng đồng đối với việc tái sử dụng tro trấu, nhằm góp phần giảm áp lực của phát thải lên môi trường và đóng góp vào sự phát triển của ngành sản xuất lúa gạo theo định hướng bền vững.
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Smith, Sean P. "Risk Management in the Extractive Industries: Environmental Analysis and Mitigation." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/25490.

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Risk management has been used regularly in the mining industry over the last few decades. The majority of those instances have focused on health and safety issues. Health and safety has improved in the United States, Australia, and other major mining districts because of the successful use of risk management and mitigation practices. Risk management has been used to a lesser extent to reduce or avoid environmental issues as well. There are a number of factors that make utilization of risk management analysis more applicable to health and safety than to environmental issues. This thesis explores the use of risk management in the context of environmental issues associated with mining. Specifically, two case studies are developed in two self-contained manuscripts: the first focuses on sequestering CO2 while the second focuses on wild rice in Minnesota with regards to the sulfate standard. Through the lens of risk management, an attempt is made to align project goals and efforts with mitigation potential to reduce the likelihood or result of particular risks. The end result is a reduction in risks due to mitigation. The first manuscript shows how risks disappear over time because they have been categorized and addressed. The project goals are keep on track by eliminating or reducing these risks. The second manuscript can be used by stakeholders to review their potential risks and mitigate those risks if possible/necessary. In contrast to the first manuscript that contains risks that are known and measurable, the second manuscript examines different risks based on four potential outcomes.
Master of Science
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Pheng, Sophea. "The potential for exploiting allelopathy to enhance weed management in Cambodian rice farming systems /." [St. Lucia, Qld], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18286.pdf.

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Diallo, Ndeye Helene. "Improved Management of Acid Sulfate Soils for Rice Production in Casamance, Senegal." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81697.

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Casamance is a region in southern Senegal that traditionally produces rainfed rice, but Senegal produces only 1/3 of its rice consumption. Lowland areas, where rice is primarily produced, have acid sulfate soils with low pH and potential aluminum and iron toxicity. The goal of this work was to determine if soil amendments can alleviate soil acidity, counteract the negative biogeochemical effects that occur in flooded conditions, and increase rice yield. A two-year experiment was conducted to test the following soil treatments – agricultural lime, pulverized oyster shell, biochar, and control (no amendment) – in flat and raised beds. Plots amended with lime and shell materials had increased soil pH, base saturation, Ca, and cation exchange capacity. Meanwhile, biochar elevated particulate organic matter and C:N ratios. Exchangeable Fe and Al were negatively correlated with soil pH, while Geobacteraceae populations (Fe reducing bacteria) increased with pH. A greater proportion of the total Fe was strongly bound in fractions that were less bioavailable in plots amended with shell or lime, and overall rice yields were significantly higher following amendment with shell or lime. During the second growing year these effects diminished, suggesting that liming effects did not persist as expected. These results demonstrate the benefits of soil amendments that raise soil pH and suggest that this effect operates by influencing overall soil nutrient availability to rice plants, but further research is needed regarding the timing and sustainability of the beneficial liming effect.
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Books on the topic "Rice management"

1

Gummert, Martin. Sustainable Rice Straw Management. Cham: Springer Nature, 2020.

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Heinrichs, E. A. Rice Insects: Management Strategies. New York, NY: Springer New York, 1991.

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T, Grayson B., Green Maurice B, Copping Leonard G, and Society of Chemical Industry (Great Britain), eds. Pest management in rice. London: Published for the Society of Chemical Industry by Elsevier Applied Science, 1990.

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Grayson, B. T. Pest Management in Rice. Dordrecht: Springer Netherlands, 1990.

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Grayson, B. T., M. B. Green, and L. G. Copping, eds. Pest Management in Rice. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0775-1.

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Gummert, Martin, Nguyen Van Hung, Pauline Chivenge, and Boru Douthwaite, eds. Sustainable Rice Straw Management. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-32373-8.

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Heinrichs, E. A., and T. A. Miller, eds. Rice Insects: Management Strategies. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4612-3124-0.

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Thomas, Fairhurst, and International Rice Research Institute, eds. Rice: Nutrient disorders & nutrient management. Singapore: Potash & Phosphate Institute, East & Southeast Asia Programs, 2000.

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University of California Integrated Pest Management Program. Integrated pest management for rice. 3rd ed. Oakland, Calif: University of California Agriculture and Natural Resources, 2012.

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F, Williams John. Rice nutrient management in California. Edited by Mutters Randall G, Greer Christopher A, Horwath William R, and University of California (System). Division of Agriculture and Natural Resources. Richmond, CA: University of California, Agriculture and Natural Resources, 2010.

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Book chapters on the topic "Rice management"

1

Bayer, D. E. "Weed Management." In Rice, 287–309. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-3754-4_8.

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Messenger, Sally, and Humphrey Shaw. "The Rice House." In Hospitality Management, 158–60. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-21595-9_30.

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Messenger, Sally, and Humphrey Shaw. "The Rice House." In Hospitality Management, 242–43. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-21595-9_60.

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Katti, Gururaj. "Rice." In Mealybugs and their Management in Agricultural and Horticultural crops, 239–45. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2677-2_19.

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Catling, David. "Pest Management." In Rice in Deep Water, 417–48. London: Palgrave Macmillan UK, 1992. http://dx.doi.org/10.1007/978-1-349-12309-4_27.

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Bijay-Singh and V. K. Singh. "Fertilizer Management in Rice." In Rice Production Worldwide, 217–53. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47516-5_10.

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Datta, Avishek, Hayat Ullah, and Zannatul Ferdous. "Water Management in Rice." In Rice Production Worldwide, 255–77. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47516-5_11.

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Bhatt, Neha, Sonia Joshi, and S. N. Tiwari. "Pests of Rice." In Pests and Their Management, 9–50. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8687-8_2.

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Bentur, Jagadish S., R. M. Sundaram, Satendra Kumar Mangrauthia, and Suresh Nair. "Molecular Approaches for Insect Pest Management in Rice." In Rice Improvement, 379–423. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66530-2_11.

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AbstractThis chapter focuses on the progress made in using molecular tools in understanding resistance in rice to insect pests and breeding rice for multiple and durable insect resistance. Currently, molecular markers are being extensively used to tag, map, introgress, and clone plant resistance genes against gall midge, planthoppers, and leafhoppers. Studies on cloned insect resistance genes are leading to a better understanding of plant defense against insect pests under different feeding guilds. While marker-assisted breeding is successfully tackling problems in durable and multiple pest resistance in rice, genomics of plants and insects has identified RNAi-based gene silencing as an alternative approach for conferring insect resistance. The use of these techniques in rice is in the developmental stage, with the main focus on brown planthopper and yellow stem borer. CRISPR-based genome editing techniques for pest control in plants has just begun. Insect susceptibility genes (negative regulators of resistance genes) in plants are apt targets for this approach while gene drive in insect populations, as a tool to study rice-pest interactions, is another concept being tested. Transformation of crop plants with diverse insecticidal genes is a proven technology with potential for commercial success. Despite advances in the development and testing of transgenic rice for insect resistance, no insect-resistant rice cultivar is now being commercially cultivated. An array of molecular tools is being used to study insect-rice interactions at transcriptome, proteome, metabolome, mitogenome, and metagenome levels, especially with reference to BPH and gall midge, and such studies are uncovering new approaches for insect pest management and for understanding population genetics and phylogeography of rice pests. Thus, it is evident that the new knowledge being gained through these studies has provided us with new tools and information for facing future challenges. However, what is also evident is that our attempts to manage rice pests cannot be a one-time effort but must be a continuing one.
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Kumar, Vivek, Gulshan Mahajan, and Bhagirath S. Chauhan. "Rice Weeds and Their Management." In Rice Production Worldwide, 361–92. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47516-5_14.

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Conference papers on the topic "Rice management"

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Lizong, Wang, Yu Nanhui, Fan Jijun, Zhang Yonglin, Pei Houchang, and Zhang Yifan. "Simulation of Separation of Rice Bran and Broken Rice in Top-suction Rice Mill with Annular Duct." In EBIMCS 2020: 2020 3rd International Conference on E-Business, Information Management and Computer Science. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3453187.3453367.

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Kumar, Neerai, Alka Agrawal, and Raees Ahmad Khan. "Emergency Alert Networks for Disaster Management: Applications Perspective." In 2018 International Conference on Research in Intelligent and Computing in Engineering (RICE). IEEE, 2018. http://dx.doi.org/10.1109/rice.2018.8509072.

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Nguyen, Vinh Gia Nhi, Alexis Drogoul, and Hiep Xuan Huynh. "Dynamic Evaluating Rice Pest Risk State of Decision Maker Agents in Rice Pest Management Model." In 2012 European Modelling Symposium (EMS). IEEE, 2012. http://dx.doi.org/10.1109/ems.2012.55.

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Berkin, G. "Heat absorbing glass from rice husk ash for a sustainable environment." In WASTE MANAGEMENT 2008. Southampton, UK: WIT Press, 2008. http://dx.doi.org/10.2495/wm080531.

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Allam, M., and G. Garas. "Recycled chopped rice straw–cement bricks: an analytical and economical study." In WASTE MANAGEMENT 2010. Southampton, UK: WIT Press, 2010. http://dx.doi.org/10.2495/wm100081.

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Hermawan, Iwan. "Measuring Asean Rice Non-tariff Measures (NTMS) and its Impact on Indonesian Food (Rice) Security." In Proceedings of the 3rd International Conference on Accounting, Management and Economics 2018 (ICAME 2018). Paris, France: Atlantis Press, 2019. http://dx.doi.org/10.2991/icame-18.2019.37.

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Stout, Michael Joseph. "Advances in the management of insect pests in rice." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.93980.

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"Organic Rice Growing Potentials in Chiang rai Province." In International Conference on Trends in Economics, Humanities and Management. International Centre of Economics, Humanities and Management, 2015. http://dx.doi.org/10.15242/icehm.ed0315053.

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Garas, G. L., M. E. Allam, and A. Ragab. "Towards sustainable waste management through structural testing of rice straw bale cement plasters." In WASTE MANAGEMENT 2008. Southampton, UK: WIT Press, 2008. http://dx.doi.org/10.2495/wm080451.

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Rachmawati, Diah, Maryani, Ulfatul Masruroh, and Ni Luh Gde Mona Monika. "The effectivity of rice husk ash in enhancing drought tolerance on different rice cultivars." In INVENTING PROSPEROUS FUTURE THROUGH BIOLOGICAL RESEARCH AND TROPICAL BIODIVERSITY MANAGEMENT: Proceedings of the 5th International Conference on Biological Science. Author(s), 2018. http://dx.doi.org/10.1063/1.5050106.

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Reports on the topic "Rice management"

1

Chvala, William D., Gregory P. Sullivan, and Katherine Mcmordie. Water Management Plan for Fort Buchanan, Puerto Rico. Office of Scientific and Technical Information (OSTI), June 2004. http://dx.doi.org/10.2172/15011131.

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Parker, Steven A., and W. D. Hunt. Strategic Energy Management Plan For Fort Buchanan, Puerto Rico. Office of Scientific and Technical Information (OSTI), October 2001. http://dx.doi.org/10.2172/885476.

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Bell, Gary, and Duncan Bryant. Red River Structure physical model study : bulkhead testing. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40970.

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The US Army Corps of Engineers, St. Paul District, and its non-federal sponsors are designing and constructing a flood risk management project that will reduce the risk of flooding in the Fargo-Moorhead metropolitan area. There is a 30-mile long diversion channel around the west side of the city of Fargo, as well as a staging area that will be formed upstream of a 20-mile long dam (referred to as the Southern Embankment) that collectively includes an earthen embankment with three gated structures: the Diversion Inlet Structure, the Wild Rice River Structure, and the Red River Structure (RRS). A physical model has been constructed and analyzed to assess the hydraulic conditions near and at the RRS for verification of the structure’s flow capacity as well as optimization of design features for the structure. This report describes the modeling techniques and instrumentation used in the investigation and details the evaluation of the forces exerted on the proposed bulkheads during emergency operations for the RRS.
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Spivack, Marla. Applying Systems Thinking to Education: The RISE Systems Framework. Research on Improving Systems of Education (RISE), May 2021. http://dx.doi.org/10.35489/bsg-rise-ri_2021/028.

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Many education systems in low- and middle-income countries are experiencing a learning crisis. Many efforts to address this crisis do not account for the system features of education, meaning that they fail to consider the ways that interactions and feedback loops produce outcomes. Thinking through the feedback relationships that produce the education system can be challenging. The RISE Education Systems Framework, which is sufficiently structured to give boundaries to the analysis but sufficiently flexible to be adapted to multiple scenarios, can be helpful. The RISE Framework identifies four key relationships in an education system: politics, compact, management, and voice and choice; and five features that can be used to describe these relationships: delegation, finance, information, support, and motivation. This Framework can be a useful approach for characterising the key actors and interactions in the education system, thinking through how these interactions produce systems outcomes, and identifying ways to intervene that can shift the system towards better outcomes.
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Beck, Tanya, and Ping Wang. Morphodynamics of barrier-inlet systems in the context of regional sediment management, with case studies from West-Central Florida, USA. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41984.

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The temporal and spatial scales controlling the morphodynamics of barrier-inlet systems are critical components of regional sediment management practice. This paper discusses regional sediment management methods employed at multiple barrier-inlet systems, with case studies from West-Central Florida. A decision-support tool is proposed for regional sediment management with discussion of its application to barrier-inlet systems. Connecting multiple barrier islands and inlets at appropriate spatio-temporal scales is critical in developing an appropriately scoped sediment management plan for a barrier-inlet system. Evaluating sediment bypassing capacity and overall inlet morphodynamics can better inform regional sand sharing along barrier-inlet coastlines; particularly where sediment resources are scarce and a close coupling between inlet dredging and beach placement is vital to long-term sustainable management. Continued sea-level rise and anthropogenic activities may intensify the need for investigating longer-term processes and expanding regional planning at a centennial timescale and are acknowledged as challenging tasks for RSM studies. Specifically, we suggested that a regionally focused, multi-inlet study was necessary for management plan of individual inlet for the west-central Florida case studies. Key recommendations based on the case studies are included.
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Arce, Eliécer, and Edgar A. Robles. Fiscal Rules and the Behavior of Public Investment in Costa Rica and Panama: Towards Growth-Friendly Fiscal Policy? Inter-American Development Bank, March 2021. http://dx.doi.org/10.18235/0003071.

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This paper aims to provide evidence on the effects of fiscal rules on public investment, fiscal results and growth in Costa Rica and Panama. First, we find that the budget formulation process and the political economy behind the adoption and compliance of fiscal rules explain that Panama has a bias to create and sequentially pile up rules, while Costa Rica has a tendency not to comply with them. Second, a retrospective analysis of the 2018 fiscal rules in both nations finds asymmetric effects on the fiscal results. In Panama it is difficult to separate the effect of fiscal rule designs on public investment; and, in Costa Rica, the application of the fiscal rule will decrease public investment, if the debt to GDP ratio exceeds 60 percent and current expenditure crowds out capital expenditure. Two lessons emerge. First, an effective fiscal rule compliance requires time consistent institutions, solid monitoring, enforcement schemes and improving the quality of public financial management systems. Second, it is necessary to review the design of fiscal rules in both countries to ensure they are investment and growth friendly.
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Demaestri, Edgardo C., Cynthia Moskovits, and Jimena Chiara. Management of Fiscal and Financial Risks Generated by PPPs: Conceptual Issues and Country Experiences. Inter-American Development Bank, December 2018. http://dx.doi.org/10.18235/0001470.

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This paper discusses the main issues concerning sovereign fiscal and financial risks from public–private partnerships (PPPs) with a focus on contingent liabilities (CLs). It is based on the presentations and discussions that took place during the XI Annual Meeting of the Group of Latin American and the Caribbean Debt Management Specialists (LAC Debt Group), held in Barbados in August 2015. The main issues discussed include PPP risks assessment, institutional framework for PPP risk management, and accounting and reporting of CLs generated by PPPs. Six country cases (Chile, Colombia, Costa Rica, Honduras, Suriname, and Turkey) are presented to illustrate experiences with different degrees of development regarding the management of risks and CLs related to PPPs. The document concludes that PPP risk management should encompass the whole lifecycle of a PPP project, risks need to be identified and CLs must be estimated and monitored, and the institutional capacity of governments to evaluate and manage PPP risks plays a central role in the successful development of PPP contracts. Although institutional capacities in this regard have improved in recent years, estimations of CLs involved in PPPs are not regularly performed, and there is still room for improvement on the assessment, measurement, registration, budgeting, and reporting of risks and CLs related to PPPs.
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Torres, Marissa, Norberto Nadal-Caraballo, and Alexandros Taflanidis. Rapid tidal reconstruction for the Coastal Hazards System and StormSim part II : Puerto Rico and U.S. Virgin Islands. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41482.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes the continuing efforts towards incorporating rapid tidal time-series reconstruction and prediction capabilities into the Coastal Hazards System (CHS) and the Stochastic Storm Simulation System (StormSim). The CHS (Nadal-Caraballo et al. 2020) is a national effort for the quantification of coastal storm hazards, including a database and web tool (https://chs.erdc.dren.mil) for the deployment of results from the Probabilistic Coastal Hazard Analysis (PCHA) framework. These PCHA products are developed from regional studies such as the North Atlantic Coast Comprehensive Study (NACCS) (Nadal-Caraballo et al. 2015; Cialone et al. 2015) and the ongoing South Atlantic Coast Study (SACS). The PCHA framework considers hazards due to both tropical and extratropical cyclones, depending on the storm climatology of the region of interest. The CHS supports feasibility studies, probabilistic design of coastal structures, and flood risk management for coastal communities and critical infrastructure. StormSim (https://stormsim.erdc.dren.mil) is a suite of tools used for statistical analysis and probabilistic modeling of historical and synthetic storms and for stochastic design and other engineering applications. One of these tools, the Coastal Hazards Rapid Prediction System (CHRPS) (Torres et al. 2020), can perform rapid prediction of coastal storm hazards, including real-time hurricane-induced flooding. This CHETN discusses the quantification and validation of the Advanced Circulation (ADCIRC) tidal constituent database (Szpilka et al. 2016) and the tidal reconstruction program Unified Tidal analysis (UTide) (Codiga 2011) in the Puerto Rico and U.S. Virgin Islands (PR/USVI) coastal regions. The new methodology discussed herein will be further developed into the Rapid Tidal Reconstruction (RTR) tool within the StormSim and CHS frameworks.
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Melby, Jeffrey, Thomas Massey, Fatima Diop, Himangshu Das, Norberto Nadal-Caraballo, Victor Gonzalez, Mary Bryant, et al. Coastal Texas Protection and Restoration Feasibility Study : Coastal Texas flood risk assessment : hydrodynamic response and beach morphology. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41051.

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The US Army Corps of Engineers, Galveston District, is executing the Coastal Texas Protection and Restoration Feasibility Study coastal storm risk management (CSRM) project for the region. The project is currently in the feasibility phase. The primary goal is to develop CSRM measures that maximize national net economic development benefits. This report documents the coastal storm water level and wave hazard, including sea level rise, for a variety of flood risk management alternatives. Four beach restoration alternatives for Galveston Island and Bolivar peninsula were evaluated. Suites of synthetic tropical and historical non-tropical storms were developed and modeled. The CSTORM coupled surge-and-wave modeling system was used to accurately characterize storm circulation, water level, and wave hazards using new model meshes developed from high-resolution land and sub-aqueous surveys for with- and without-project scenarios. Beach morphology stochastic response was modeled with a Monte Carlo life-cycle simulation approach using the CSHORE morphological evolution numerical model embedded in the StormSim stochastic modeling system. Morphological and hydrodynamic response were primarily characterized with probability distributions of the number of rehabilitations and overflow.
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Walsh, Alex. The Contentious Politics of Tunisia’s Natural Resource Management and the Prospects of the Renewable Energy Transition. Institute of Development Studies (IDS), February 2021. http://dx.doi.org/10.19088/k4d.2021.048.

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For many decades in Tunisia, there has been a robust link between natural resource management and contentious national and local politics. These disputes manifest in the form of protests, sit-ins, the disruption of production and distribution and legal suits on the one hand, and corporate and government response using coercive and concessionary measures on the other. Residents of resource-rich areas and their allies protest the inequitable distribution of their local natural wealth and the degradation of their health, land, water, soil and air. They contest a dynamic that tends to bring greater benefit to Tunisia’s coastal metropolitan areas. Natural resource exploitation is also a source of livelihoods and the contentious politics around them have, at times, led to somewhat more equitable relationships. The most important actors in these contentious politics include citizens, activists, local NGOs, local and national government, international commercial interests, international NGOs and multilateral organisations. These politics fit into wider and very longstanding patterns of wealth distribution in Tunisia and were part of the popular alienation that drove the uprising of 2011. In many ways, the dynamic of the contentious politics is fundamentally unchanged since prior to the uprising and protests have taken place within the same month of writing of this paper. Looking onto this scene, commentators use the frame of margins versus centre (‘marginalization’), and also apply the lens of labour versus capital. If this latter lens is applied, not only is there continuity from prior to 2011, there is continuity with the colonial era when natural resource extraction was first industrialised and internationalised. In these ways, the management of Tunisia’s natural wealth is a significant part of the country’s serious political and economic challenges, making it a major factor in the street politics unfolding at the time of writing.
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