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Dissertations / Theses on the topic 'And cropping system'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Forster, David A. "Rotation benefits of alfalfa in a cropping system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ41699.pdf.

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2

Chim, Bee Khim. "Alternative and Improved Cropping Systems for Virginia." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/79721.

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Feed grain consumption in Virginia and the mid-Atlantic region is more than double the total production. Producing more feed grains in this region could generate more profit for grain growers and lower costs for end-users. Increased feed grain production in this region will necessitate improved corn (Zea mays L.) management techniques and adoption of alternative feed grains such as grain sorghum (Sorghum bicolor L.). In order to achieve our overall objective of increased corn and grain sorghum production in the region, experiments were conducted to assess tools with the ability to increase

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3

Orford, Rohan [Verfasser], and Folkard [Akademischer Betreuer] Asch. "A study of pasture cropping as an alternative cropping system for sub-saharan Africa / Rohan Orford ; Betreuer: Folkard Asch." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2020. http://d-nb.info/1215756100/34.

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4

Nelson, Suzanne Cathleen. "Genotype and cropping system effects on cowpea growth and yield." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186596.

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Genotype X cropping system interactions may complicate the plant breeders' task of increasing crop yields, since selection and improvement in one cropping system may not result in improved performance in a different cropping system. Field experiments were conducted in 1990 and 1991 to examine the effects of cowpea (Vigna unguiculata (L.) Walp.) genotypes and cropping systems on cowpea yield, yield components, biomass, and leaf area. When cowpea was grown in sole crop and in intercrop with pearl millet (Pennisetum americanum (L.) Leeke), a significant genotype X cropping system interaction for

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5

ARAYAPHONG, SUPISRA. "Cost – Benefit Analysis of Different Rice Cropping systems in Thailand." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-180974.

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System of Rice Intensification (SRI) has been introduced and practiced throughout Thailand. However, the conventional transplanting system is well-accepted among Thai farmers over the country. This paper quantifies and compares costs and benefits of SRI and the conventional system of rice cultivation in Thailand to find the best system for a farmer, the environment and a society. The scope of this paper includes a farmer’s profit, the environmental damages and a society’s net benefits categorized in clay soil and sandy loam conditions. The farmer’s profit consists of a production cost and inco

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6

Roberts, Bruce Alan. "The role of soil organic matter in a cotton based cropping system /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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7

Piper, Allison. "Root Length Affects Soluble Carbon and Phosphorus in a Rotational Cropping System." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/PiperA2005.pdf.

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8

Caniquitte, Sabine Sophie. "Soil microbial community, soil aggregation and cropping system: study of their relationship." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19278.

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The effect of six cropping systems on soil carbon, aggregation and microbial community was examined after three growing seasons. The six cropping systems involved corn, sorghum, soybean, red clover, timothy and bare fallow, and differed in terms of tillage practice, type of crop (perennial versus annual) and type, amount and quality of carbon inputs to soil. Soil structure under sorghum and timothy differed from that of bare soil. Soil total carbon content exceeded that of fallow only under the two perennial cropping syste

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9

Mampana, Reedah Makgwadi. "Cropping system effects on soil water, soil temperature and dryland maize productivity." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/43165.

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Improved soil water conservation has become an important subject in semi-arid areas due to low and erratic rainfall which is often combined with higher temperatures to provide unsuitable conditions for successful crop productivity. Dryland agriculture remains vulnerable to yield losses in these areas. This calls for implementation of conservation agricultural practices that would improve dryland maize productivity. An on-station field trial was started in 2007 at Zeekoegat experimental farm (24 kilometers north of Pretoria), to establish the effect of different conservation agriculture practic

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10

Browning, Phillip W. "Agronomic and Economic Comparison of Full-Season and Double-Cropped Small Grain and Soybean Systems in the Mid-Atlantic USA." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32725.

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Increased demand for barley has changed the proportion of crops grown in Virginia and the Mid-Atlantic USA. Winter wheat is the predominant small grain crop, but barley can be a direct substitute, although much less of it is grown. Soybean is grown full-season and double-cropped after both small grains. Historically, wheat was the primary small grain in the soybean double-crop rotation because of its greater profitability. The barley-soybean cropping system is not a new concept in the region, but the literature is outdated. New agronomic and economic data that directly compares full-seaso

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11

McCauley, Ann Michelle. "Nitrogen fixation by annual legume green manures in a semi-arid cropping system." Thesis, Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/mccauley/McCauleyA0811.pdf.

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There is renewed interest within agriculture to improve and sustain soil fertility. Legume crops can provide an alternative nitrogen (N) input to a cropping system through biological N fixation. The contribution of N from legume cropping systems depends on the quantity of N fixed and soil processes that influence soil N availability. The primary objectives of this project were 1) to evaluate the effect of planting and termination time on biomass production and N fixation by two legume green manure crops; and 2) to investigate the role of soil P availability on legume growth and N fixation. A t

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12

McGowan, Andrew R. "Biofuel cropping system impacts on soil C, microbial communities and N₂O emissions." Diss., Kansas State University, 2015. http://hdl.handle.net/2097/20510.

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Doctor of Philosophy<br>Agronomy<br>Charles W. Rice<br>Substitution of cellulosic biofuel in place of gasoline or diesel could reduce greenhouse gas (GHG) emissions from transportation. However, emissions of nitrous oxide (N₂O) and changes in soil organic carbon (SOC) could have a large impact on the GHG balance of cellulosic biofuel, thus there is a need to quantify these responses in cellulosic biofuel crops. The objectives of this study were to: (i) measure changes in yield, SOC and microbial communities in potential cellulosic biofuel cropping systems (ii) measure and characterize the te

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13

Whalen, Rebecca Anne. "Influence of Selective Insecticides and Cropping System on Arthropod Natural Enemies in Soybean." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71653.

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Arthropod natural enemies play a key role in controlling potentially damaging pest populations in agroecosystems. An abundant and diverse natural enemy community is associated with higher yields in a variety of crops. Certain aspects of soybean production can make a field more or less amenable to a robust natural enemy community. For instance, commonly used broad-spectrum insecticides which are highly toxic to most arthropods can decrease natural enemy densities and allow for secondary pest outbreaks. Selective insecticides that have less impact on natural enemy populations allow for pest cont

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14

Alvarado, Raya Horacio E. "Carbon supply and demand in an annual raspberry (Rubus idaeus L.) cropping system." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0015361.

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15

Ramoroka, Mokgadi Mizen. "Grain yield, gravimetric moisture content, dry matter accumulation and chlorophyll production in maize-legume intercrop under minimum and conventional tillage systems." Thesis, University of Limpopo (Turfloop Campus), 2008. http://hdl.handle.net/10386/639.

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Thesis (M.Sc. (Agriculture)) --University of Limpopo, 2008<br>Maize is a dominant crop in smallholder farming systems in the Limpopo province of South Africa, generally cultivated as intercrop with grain legumes. The major constraint in this cropping system is inadequate soil moisture during the growing season, which also limits nutrient availability to the component crops. The minimum tillage system has been reported to improve soil moisture availability on farmers’ fields but this has not yet been verified in an intercropping system in the province. The objective of this study was to quantif

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16

Shafiq, Muhammad. "Relative efficiency of crop production in the cotton-wheat cropping system of Pakistan's Punjab." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265175.

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17

Ssekabembe, Charles K. "Interactions at the tree/crop interface in a maize/black locust alley cropping system /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487780865410086.

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18

Spedding, Timothy Andrew. "Soil microbial dynamics in response to tillage and residue management in a maize cropping system." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79133.

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The impact of tillage and residue management on soil microorganisms was studied over the maize (Zea mays L.) growing season in southwestern Quebec. Tillage and residue treatments were imposed on a sandy loam to loamy sand soil in fall 1991. Treatments consisted of no till, reduced tillage, and conventional tillage with crop residues either removed from (-R) or retained on (+R) experimental plots, laid out in a randomized complete block design. Soil microbial biomass carbon (SMB-C), soil microbial nitrogen (SMB-N) and phospholipid fatty acid (PLFA) concentrations were measured four times

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19

Ndakidemi, Patrick Alois. "Nutritional characterisation of the rhizosphere of symbiotic cowpea and maize plants in different cropping system." Thesis, Cape Peninsula University of Technology, 2005. http://hdl.handle.net/20.500.11838/762.

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Thesis (DTech (Chemistry))--Cape Peninsula University of Technology, 2005<br>A 2-factorial experiment, involving 3 levels of phosphorus (0, 40, and 80 kg P.ha-I ) as main treatment and 4 cropping systems (mono crop, maize/cowpea inter-row, maize/cowpea intra-row, and maize/cowpea intra-hole cropping) as sub-treatment was conducted in the field for 2 consecutive years in 2003 and 2004 to assess i) the effects of exogenous P supply and cropping system on the concentrations of plant-available nutrients in the rhizosphere of cowpea and maize; ii) the effect of exogenous P supply on tissue concentr

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20

Ragsdale, Jeanna D. "Influence of cover crops on nutrient availability in a sweet potato cropping system in south Florida." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0015300.

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21

Hasnat, Abul, University of Western Sydney, of Science Technology and Environment College, and School of Environment and Agriculture. "Soil-water use and irrigation scheduling under fruit tree-turf alley cropping system in Hawkesbury Area." THESIS_CSTE_EAG_Hasnat_A.xml, 2003. http://handle.uws.edu.au:8081/1959.7/614.

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Efficient use of irrigation and nutrients are becoming increasingly important in commercial orchards in the Hawkesbury area. Proper irrigation scheduling practices can help in the better use of irrigation water and reduce environmental impacts. Field experiments were conducted during February 1999 to June 2000 to understand soil-water use, and to evaluate farmer’s irrigation practice under an alley cropping system consisting of turf and stone fruits. The study was carried out at Atlas Farm, 3.5 km from the University of Western Sydney, Hawkesbury campus. The experimental site is a floodplain o

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22

Lamerre, Justine [Verfasser]. "Above-ground interactions and yield effects in a short rotation alley-cropping agroforestry system / Justine Lamerre." Halle, 2016. http://d-nb.info/1135607990/34.

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23

Welderufael, W. A., and Y. E. Woyessa. "Runoff and soil loss under different tillage and cropping system practices at Ginchi Vertsol in Ethiopia." Interim : Interdisciplinary Journal, Vol 13, Issue 3: Central University of Technology Free State Bloemfontein, 2013. http://hdl.handle.net/11462/314.

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Published Article<br>To assess and predict runoff and soil loss on different tillage methods coupled with alternative cropping systems in the central highland vertisols of Ethiopia, a study was carried out at Ginchi, Agricultural Research Sub-Center during 1996. The experiment was conducted on runoff plots of 4 meter wide by 22 meter long, on surface slopes that range between 0.1% and 2.3%. The data collected was analyzed using regression models and an empirical formula developed by the Soil Conservation Service of America (SCS, 1964; 1972), known as curve number (CN). Both the regression mode

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24

Bulgari, R. "STUDIES OF QUALITY AND NUTRIENT USE EFFICIENCY IN VEGETABLE CROPS GROWN UNDER DIFFERENT SUSTAINABLE CROPPING SYSTEM." Doctoral thesis, Università degli Studi di Milano, 2018. http://hdl.handle.net/2434/533673.

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Lo scopo del progetto di dottorato è stato quello di valutare gli effetti a livello fisiologico, biochimico e molecolare di prodotti biostimolanti su ortaggi da foglia (lattuga e rucola) e di approfondire la conoscenza sulla loro modalità di azione. La prima parte del lavoro ha riguardato lo studio degli effetti di estratti acquosi di foglie (LE) e fiori (FE) di Borago officinalis L. su piante di lattuga, attraverso l’utilizzo di tecniche di fenomica, agronomia, fisiologia e biochimica. I risultati ottenuti hanno mostrato come gli estratti di borragine siano in grado di aumentare il metabolism

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25

Mishiyi, Sibongile Gift. "Nodulation, dry matter accumulation and grain yield of cowpea and lablab varieties under sole and intercropping system with maize." Thesis, University of Limpopo (Turfloop Campus), 2006. http://hdl.handle.net/10386/694.

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Thesis (M.Sc. (Agronomy )) --University of Limpopo, 2007<br>Intercropping is the growing of two or more crops simultaneously on the same field, and it is a common traditional practice among resource-poor farmers throughout the Limpopo Province of South Africa. Field studies were conducted at two locations in the province namely, the University of Limpopo experimental farm at Syferkuil, and a farmer’s field at Dalmada during the 2002/2003 growing season, to determine patterns of nodulation in cowpea and lablab varieties under sole culture and in an intercropping system with maize, variety SNK21

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26

Neumann, Helge Jan. "Optimierungsstrategien für den Getreideanbau im ökologischen Landbau System "weite Reihe" und Direktsaat in ausdauernden Weissklee ("Bi-cropping")." Kiel Inst. für Pflanzenbau und Pflanzenzüchtung, 2005. http://e-diss.uni-kiel.de/diss_1485/d1485.pdf.

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27

Hernández, Daumás Salvador. "Carbon and nitrogen cycling in a tree-grass inter-cropping system in the humid tropics of Mexico." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/633.

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This work aimed to contribute to the understanding of tree - grass inter-cropping interactions so that the productivity and sustainability of extensive livestock husbandry can be increased. The work was carried out in the context of a small farm in Oaxaca, Mexico, where increases in productivity are limited by shortage of capital and where the tree component would be used as green manure. It is difficult to investigate the effectiveness of such a system by only using conventional field trials. I constructed a mathematical model to simulate how the main components of the system function under c

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28

Felske, Wolfgang. "Cropping system effects on soil erosion and productivity of food and forage crops in tropical Andean hillside farming /." Beuren ; Stuttgart : Grauer, 2000. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009586921&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Nichols, Lara Kaitlin. "Relationships Among Soil Properties and Soil CO2 Efflux in a Loblolly Pine-Switchgrass Intercropped System." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51945.

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The components of soil CO2 efflux are affected by many soil properties including temperature, moisture, microbial abundance and activity, and other soil physical and chemical properties. Changes in these factors can result in high spatial and temporal variability of total soil CO2 efflux. Low molecular weight organic acids (LMWOAs), dissolved organic carbon (DOC) and dissolved organic nitrogen (DON), microbial biomass and activity were measured to evaluate the impact of intercropping switchgrass (Panicum virgatum L.) in a loblolly pine (Pinus taeda L.) plantation. Surface soil samples (0-15 cm

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Nteyi, Sinovuyo Mava. "Effects of crop rotation and tillage system on the control of ryegrass (lolium multiflorum X perenne) in wheat (triticum aestivum) in the Swartland production area of South Africa's Western Cape Province." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1020990.

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A major challenge facing agriculture today is to sustain the productivity of agricultural systems with the reduction of weed invasion. The Swartland region in the Western Cape (South Africa) is intensively cropped, producing wheat (Triticum aestivum) as the major crop. As a result of the weedy ryegrass invasion the wheat yield is reduced. In addition, ryegrass has developed resistance to grass herbicides (graminicides). This situation has increased the need to use alternative practices for controlling the invasion of ryegrass in wheat fields. In this regard, crop rotation and tillage systems w

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Heineman, Arne M. "Species selection for alley cropping in Western Kenya : system management, nutrient use efficiency and tree-crop compatibility (1988-1995)." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318545.

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Wallingford, Anna Kate. "Investigating host plant selection of harlequin bug, Murgantia histrionica (Hahn), in order to improve a trap cropping system for its management." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/26807.

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Harlequin bug (HB), Murgantia histrionica (Hahn), is a pest of cole crops. Alternative control strategies were investigated for control of HB, including trap cropping and systemic neonicotinoid insecticide applications. Potential trap crops, mustard (Brassica juncea â Southern Giant Curledâ ), rapeseed (B. napus â Athenaâ ), rapini (B. rapa) and arugula (Eruca sativa) were preferred over collard (B. oleracea â Championâ ), and a non-brassica control, bean (Phaseolus vulgaris â Broncoâ ) in field-cage choice tests. Harlequin bug could not complete development on bean, developed po

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Le, Thi Thanh Ly. "Assessment of the sustainability of the rice-maize cropping system in the Red River Delta of Vietnam and developing reduced tillage practices in rice-maize system in the area." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-176619.

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Rice and maize are global staple food and play an important role in world’s food security strategy. Vietnam is one of rice leading export countries but annually it has to import a considerate amount of maize for cattle food processing. Red River Delta in the north of Vietnam is the second rice bucket of the country, which is responsible formore than 20% of total rice production. The priority crops in the areas are rice and maize and rice-maize system is the leading cropping system in the area. Currently, it is reported that the rice-maize cropping system is not sustainable and its profit is re

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Strachan, Brian Douglas. "The design, implementation and assessing of an agroecological cropping system by rural KwaZulu-Natal households : its effect on their diet and food security." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86234.

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Thesis(MPhil)--Stellenbosch University, 2014<br>ENGLISH ABSTRACT: This thesis documents a Participatory Action Research (PAR) project conducted from 2011 to 2013 in a rural communal area in southern KwaZulu-Natal, South Africa. The area is a microcosm of the global environmental and socio-economic polycrisis; with adult unemployment at 50 percent, 73 percent female-headed households, heavy dependence on government social grants and a food system reliant on purchased food. Eight, mainly female-headed households (the co-researchers), assisted by the student researcher, implemented and assessed

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Benitez, Maria Soledad. "Applied T-RFLP Analyses for the Identification and Characterization of Microbial Populations Associated With Damping-Off Incidence in a Transitional Organic Cropping System." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218471106.

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Meylan, Louise. "Design of cropping systems combining production and ecosystem services : developing a methodology combining numerical modeling and participation of farmers. Application to coffee-based agroforestry in Costa Rica." Thesis, Montpellier, SupAgro, 2012. http://www.theses.fr/2012NSAM0031/document.

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Face aux besoins croissants pour une production agricole durable, les systems de culture évoluent vers des systèmes qui accomplissent des objectifs environnementaux et agricoles multiples. La recherche en conception de systèmes de cultures (CSC) s'intéresse à l'effet des pratiques et de l'environnement sur les systèmes de culture et leur performance. L'interaction entre production et services ecosystémiques, et la quantification de ces relations, sont un aspect clé de ce domaine de recherche. Une variété d'approches ont été théorisées, tels que l'utilisation de modèles et la mobilisation de co

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Stella, T. "MODELLING CARBON AND NITROGEN DYNAMICS IN PADDY RICE SYSTEM: IMPACTS ON CROP PRODUCTIVITY AND GREENHOUSE GAS EMISSIONS." Doctoral thesis, Università degli Studi di Milano, 2016. http://hdl.handle.net/2434/347256.

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The main challenge of modern agriculture lies in the need of enhancing crop productivity to guarantee food security while achieving the sustainability of cropping systems in a changing climate. In a recent speech to the 21st Conference of Parties to the United Nations Framework Convention on Climate Change (COP21) held in Paris, the president of the United States declared that for all the challenges we face, the growing threat of climate change could define the contours of this century more dramatically than any other. This is why He hopes that all the countries in the world, united in common

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Hartmann, Tobias Edward [Verfasser], and Torsten [Akademischer Betreuer] Müller. "Evaluation and improvement of N fertilization strategies in the wheat/maize double-cropping system of the North China Plain / Tobias Edward Hartmann. Betreuer: Torsten Müller." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2015. http://d-nb.info/1070590223/34.

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Kamp, Larissa [Verfasser], and Simone [Akademischer Betreuer] Graeff-Hönninger. "A cropping system for yacon (Smallanthus sonchifolius Poepp. Endl.) : optimizing tuber formation, yield and sugar composition under European conditions / Larissa Kamp ; Betreuer: Simone Graeff-Hönninger." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2020. http://d-nb.info/1206996846/34.

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Aguiar, Alana das Chagas Ferreira [UNESP]. "Sustentabilidade do sistema plantio direto em argissolo no trópico úmido." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/100013.

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Made available in DSpace on 2014-06-11T19:30:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-11-10Bitstream added on 2014-06-13T18:40:32Z : No. of bitstreams: 1 aguiar_acf_dr_botfca.pdf: 805231 bytes, checksum: 691481c78e5e608342cb3c11587eccca (MD5)<br>Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico do Maranhão (FAPEMA)<br>Os objetivos do presente estudo foram: (i) avaliar a sustentabilidade do agrossistema de plantio direto na palha com leguminosas cultivadas em aléias, por meio de seu efeito sobre os indicadores qualitativos químicos e físicos de um Argissolo do tró

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Rezende, Bráulio Luciano Alves [UNESP]. "Consórcios de pepino e alface em cultivo protegido: viabilidade agroeconômica." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/105269.

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Made available in DSpace on 2014-06-11T19:33:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-21Bitstream added on 2014-06-13T20:45:37Z : No. of bitstreams: 1 rezende_bla_dr_jabo.pdf: 838612 bytes, checksum: 6bbd1a4cc21f9f39b0f4f306d9a47d92 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Com o objetivo de avaliar a produtividade e rentabilidade dos consórcios de pepino, em duas densidades populacionais, com dois grupos de alface (crespa e americana), em ambiente protegido, realizados

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Souissi, Imen. "Resilience and adaptive capacity of mediterranean farming systems to climate change : application to the low valley of Medjerda-Tunisia." Thesis, Montpellier 1, 2014. http://www.theses.fr/2014MON10001.

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Le changement climatique menacera probablement la durabilité de la plupart des systèmes agricoles en région méditerranéenne et notamment au sud de la méditerranée. Le comportement des systèmes agricoles sera différent selon les régions sur la base de contextes biophysique, socio-économique, institutionnel et politique. L'objectif de cette thèse est d'analyser la résilience et la capacité d'adaptation au changement climatique des exploitations agricoles en prenant comme référence celles de la Basse Vallée de Medjerda (Nord de la Tunisie). Pour répondre à cet objectif, trois questions principale

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De, Antoni Migliorati Massimiliano. "Reducing nitrous oxide emissions while supporting subtropical cereal production in Oxisols." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/82496/10/Massimiliano%20Migliorati%20Thesis.pdf.

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This is the first study to investigate alternative fertilisation strategies to increase cereal production while reducing greenhouse gas emissions from the most common soil type in subtropical regions. The results of this research will contribute to define future farming practices to achieve global food security and mitigate climate change. The study established that introducing legumes in cropping systems is the most agronomically viable and environmentally sustainable fertilisation strategy. Importantly, this strategy can be widely adopted in subtropical regions since it is economically ac

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Siegfried, Konrad [Verfasser]. "Gaseous and leaching losses of carbon and nitrogen in irrigated organic farming of a coastal oasis in Oman : effects of manure quality and cropping system / Konrad Siegfried." Kassel : Universitätsbibliothek Kassel, 2011. http://d-nb.info/1010620703/34.

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Schiavo, Jordana. "Produção e qualidade de sementes de aveia branca: efeito de cultivares, sistema de cultivo antecessor e doses de nitrogênio." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/5154.

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The oat is a worldwide importance of winter cereal and Brazil stands out in the southern region as an alternative culture of winter. The cultivation of oats has several purposes, whether in crop rotation, soil cover, food and feed. Nitrogen fertilization is essential in the oat crop, since it has direct effects on yield components, working in the issuance and maintenance of fertile tillers. In order to evaluate the seeds of productivity in the agricultural harvest, the physiological seed quality and quality of oat seedlings after eight months of storage, depending on the application of nitroge

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Gomes, Neto Nelson Justino. "Avaliação microbiológica de alfaces (Lactuva sativa) obtidas em cultivos tradicional, orgânico e hidropônico." Universidade Federal da Paraíba, 2011. http://tede.biblioteca.ufpb.br:8080/handle/tede/4021.

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Made available in DSpace on 2015-04-17T14:49:16Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1037555 bytes, checksum: a2a7db2a36b3246c8fbeaaacfc58b675 (MD5) Previous issue date: 2011-11-03<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Lettuce (Lactuva sativa) is the increased consumption of leafy vegetables in Brazil, however may be associated with the transmission of pathogenic microorganisms to human. The present study was to evaluate the microbiological quality of samples of curly lettuce variety, obtained from the traditional farming systems, organic and h

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Kyaw, Khin Zar [Verfasser], and Brigitte [Akademischer Betreuer] Urban. "Testing the Effects of Biochars on Crop Yields and Soil Properties in a Rice-based Cropping System of Myanmar: Field Experiment and Modelling / Khin Zar Kyaw. Betreuer: Brigitte Urban." Lüneburg : Universitätsbibliothek der Leuphana Universität Lüneburg, 2016. http://d-nb.info/1105035425/34.

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Blackburn, Lynda G. "Quantification and estimation of nitrous oxide emissions from dairy manure applications in a western Quebec pea-forage and an eastern Ontario alfalfa-forage cropping system : by Lynda G. Blackburn." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100771.

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Agricultural systems are known to emit nitrous oxide (N2O)---a potent greenhouse gas. The roving flux tower measuring system of Agriculture and Agri-Food Canada was used to make continuous measurements of N2O fluxes in an edible pea field in Western Quebec in 2003-04 and then in an alfalfa-timothy forage field in Eastern Ontario in 2004-05. The experiment was designed to capture, at the field scale, the expected large N2O emissions occurring as a result of fertilizer application for a year, in relation to both large precipitation events and spring thaw.<br>Growing season N2O emissions averaged

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Lesur, Claire. "Cultiver Miscanthus x giganteus en parcelles agricoles : du diagnostic agro-environnemental à la conception-évaluation ex ante de systèmes de culture à vocation énergétique." Thesis, Paris, AgroParisTech, 2012. http://www.theses.fr/2012AGPT0084/document.

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Second-generation biofuels could provide renewable energy while reducing the globaleconomy dependence on oil and mitigating climate change. However, their greenhouse gasemission balances, as well as their energy and environmental balances, are discussed,especially when they are produced from agricultural feedstock. The use of agriculturalfeedstock for energy purposes also raises the issue of competition with food production. Inthis context, this work contributes to the assessment of the sustainability of Miscanthus xgiganteus, a perennial C4 crop candidate to the production of second-generatio

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Urruty, Nicolas. "Robustesse du rendement du blé tendre face aux perturbations abiotiques et biotiques : cadre méthodologique et leviers agronomiques." Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2253/document.

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Face à un contexte croissant d'incertitude, les systèmes agricoles doivent être performants, non seulement dans des conditions moyennes, mais aussi quand les perturbations sont plus importantes. Récemment, de nombreux concepts ont été développés pour étudier la durabilité des systèmes dans des environnements changeants, dont celui de robustesse. Néanmoins, son transfert aux systèmes de grandes cultures reste limité. L'objectif de la thèse est alors de proposer un cadre d'évaluation de la robustesse qui soit opérationnel en conditions de grandes cultures. Nous nous sommes focalisés sur la cultu

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