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Rozprawy doktorskie na temat „Crop residue management”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Myers, Brian. "Variable crop residue management." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/35271.

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Master of Agribusiness<br>Department of Agricultural Economics<br>Jeffery R. Williams<br>Production agriculture is constantly evolving to become more efficient and productive. Crop residue serves as a valuable source of nutrients for the soil, but it is increasingly abundant with today’s enhanced crop genetics. If new technology can effectively provide a way to micro-manage crop residue levels within a field, the benefits will go beyond soil health. Surplus crop residue can be collected for secondary income while leaving the optimum amounts in the field to maintain the environment and soi

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Collins, Shane. "Residue composition influences nutrient release from crop residues." University of Western Australia. School of Earth and Geographical Sciences, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0171.

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[Truncated abstract] A greater adoption of stubble retention, minimum-till and no-till farming practices for the purposes of conserving soil, water and fertility requires a greater understanding of the complexity of physical and chemical interactions between the soil and crop residues. There is currently insufficient knowledge to allow reliable predictions of the effects of different residue types in different environments on soil fertility and crop growth, owing to the many residue characteristics and environmental interactions that have been shown to affect decomposition or nutrient release.

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He, Yuxin. "Crop residue management and its impacts on soil properties." Diss., Kansas State University, 2015. http://hdl.handle.net/2097/19043.

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Doctor of Philosophy<br>Agronomy<br>DeAnn R. Presley<br>Crop residue removal for livestock feeding and biofuel production at large scales must be evaluated to assess impacts on soil productivity and properties. Among all the potential negative impacts, wind erosion is a major concern in the central Great Plains. We conducted an on-farm study from 2011 to 2013 by removing crop residue at five levels (0, 25, 50, 75, and 100%) to determine the effects of crop residue removal on soil wind erosion parameters such as dry aggregate size distribution including soil wind erodible fraction (EF <0.84 mm

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4

Gelder, Brian Keith. "Land management database development methods for delineating management units and estimating crop and residue cover /." [Ames, Iowa : Iowa State University], 2007.

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Battaglia, Martin. "Crop residue management effects on crop production, greenhouse gases emissions, and soil quality in the Mid-Atlantic USA." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/86483.

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Cellulosic biomass-to-bioenergy systems can provide environmental and economic benefits to modern societies, reducing the dependence on fossil-fuels and greenhouse gas emissions while simultaneously improving rural economies. Corn (Zea mays L.) stover and wheat straw (Triticum aestivum L.) residues have particular promise given these crops are widely grown and their cellulosic fractions present a captured resource as a co-product of grain production. Annual systems also offer the ability to change crops rapidly in response to changing market demands. However, concerns exist about residue remov

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Zheng, Baojuan. "Broad-scale Assessment of Crop Residue Management Using Multi-temporal Remote Sensing Imagery." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/19201.

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Tillage practices have changed dramatically during the past several decades as agricultural specialists have recognized the unfavorable environmental effects of mechanized tillage. Alternatively, conservation tillage management can mitigate adverse environmental impacts of tillage, such as soil and water degradation. Adoption of conservation tillage has continued to increase since its first introduction, which raises questions of when and where it is practiced. Spatial and temporal specifics of tillage practices form important dimensions for development of effective crop management practices a

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Isaac, Gura. "Crop rotation and crop residue management effects under no till on the soil quality of two ecotopes in the Eastern Cape, South Africa." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/2934.

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The degradation of soil quality due to undesirable farming practices has reached alarming scales in the Eastern Cape and this has had negative repercussions on soil productivity and the environment in general. There is growing evidence that conservation agriculture (CA) practices involving minimal mechanical disturbance, maintaining permanent surface cover and embracing diverse crop rotations increase soil organic carbon (SOC) and therefore has potential to mitigate soil quality deterioration. A study was carried out at two sites located in two ecotopes to investigate the effects of crop resid

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Tao, Hsiao-Hang. "Crop residue management in oil palm plantations : soil quality, soil biota and ecosystem functions." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:ebcc3bd9-45c0-4d22-9fef-71dff4abecd3.

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The application of crop residues is one of the most common agricultural practices used to maintain soil ecosystems and crop productivity. This thesis focuses on the oil palm (Elaeis guineensis) agroecosystem, an important tropical crop that has expanded rapidly over the past four decades. Both land conversion and business-as-usual practices within the plantations have contributed to soil degradation. The application of oil palm residues, such as empty fruit bunches (EFB) and oil palm fronds, are thought to have positive effects on the soil ecosystem; yet there is currently a deficit of knowled

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9

Suriadi, Ahmad. "Structural stability and Na-Ca exchange selectivity of soils under sugarcane trash management." Title page, Contents and Abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09ASOM/09asoms961.pdf.

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Ducamp, Fernando Arriaga Francisco J. "Effect of rye residue on soil properties and nitrogen fertiization of cotton." Auburn, Ala, 2008. http://hdl.handle.net/10415/1532.

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11

Cogdill, Todd Joseph. "Investigation of management strategies for the production of sweet sorghum as a bioenergy crop and preservation of crop residue by the ensiling process." [Ames, Iowa : Iowa State University], 2008.

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12

Morris, Jennifer L. "Use of herbicides, tillage, and grazing cattle for establishment of corn in rotation with alfalfa and rye." Thesis, Virginia Tech, 1993. http://hdl.handle.net/10919/45050.

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Six combinations of grazing, tillage, and herbicides were studied during 2 yr in a randomized block design to determine alfalfa (Medicago sativa) survival, corn (Zea mays) plant populations and corn growth in an alfalfa-corn rotation. Alfalfa was overseeded with rye (Secale cereale) in autumn prior to planting corn in spring of each year. Treatments were 1) non-grazed control with standard chemical treatments for no-till establishment of corn, 2) grazing alfalfa, then grazing rye until corn planting followed by dicamba application, 3) alfalfa grazing plus glyphosate prior to corn planting, 4)

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13

Kadango, Tendayi Lovemore. "Farmers' perceptions of insect pests in the Eastern Cape maize-based cropping systems and the effects of crop residue management on insect pest populations." Thesis, University of Fort Hare, 2018. http://hdl.handle.net/10353/6202.

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Maize (Zea mays L.) is one of the most important crops in South Africa that is cultivated for food, feed and as a cash crop. Maize in the Eastern Cape is typically grown for consumption and the Province is one of the least producers owing to small landholdings, poor production conditions and pests. This study investigated: (i) the different maize cropping systems smallholder farmers practice in the Eastern Cape (EC), (ii) the major maize insect pests within the identified cropping systems, (iii) the perceptions of Eastern Cape smallholder maize farmers on the effects of insect pests, and (iv)

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14

Nishigaki, Tomohiro. "Improvement of Water- and Nutrient-Use Efficiency with Optimum Agricultural Management Practices in Upland Cropping Systems in Morogoro, Tanzania." Kyoto University, 2017. http://hdl.handle.net/2433/228243.

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15

Graham, Michael William. "Evaluating the interactions of crop management, carbon cycling, and climate using Earth system modeling and remote sensing." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/102386.

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Crop management practices, such as soil tillage and crop residue management, are land management activities with potentially large impacts on carbon (C) cycling and climate at the global scale. Improvements in crop management practices, such as conservation tillage or 'no-till' (NT), have been proposed as climate change mitigation measures because such practices may alter C cycles through increased sequestration of soil C in agricultural soils. Despite their potential importance, regional to global scale data are lacking for many crop management practices, and few studies have evaluated the po

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16

Dam, Rikke Friis. "Impacts of long term tillage and residue practices on selected soil properties." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=78344.

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A two year study was initiated in 2001 on a 2.4 ha site of mostly St. Amable loamy sand and shallow loamy sand at the Macdonald Campus Research Farm. This study sought to assess the effects of long term tillage and residue practices on soil physical properties and to relate these properties to their influence on total carbon, total nitrogen and soil microbial biomass-carbon. The site was set up as a factorial experiment with three tillage practices (no till---NT; reduced till---RT; and conventional till---CT) and two residue practices (with residue (grain corn), +R; without residue (sil

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17

Nafi, Eeusha [Verfasser]. "Interactive tillage & crop residue management effects on soil properties, crop nutrient uptake & yield in different weathered soils of West Africa : measurements, modelling & scenario simulations / Eeusha Nafi." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/1235525945/34.

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18

Diop, El Hadji Habib Sy. "Biofuel feedstocks: implications for sustainability and ecosystem services." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/16994.

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Doctor of Philosophy<br>Department of Agronomy<br>Charles W. Rice<br>Biofuel feedstocks such as grains and cellulose are gaining increased attention as part of the U.S. portfolio of solutions to address climate change and improve energy security. As the future of biofuels unfolds, major concerns are emerging, including the sustainability of the soil resource in bioenergy cropping system. With a clear understanding of the sustainability risks that exist within the agricultural soil resources, it is now essential to develop metrics that document the soil health as well as the total biomass produ

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19

Mühlig-Versen, Bernhard. "Effects of crop residue management, phosphorus application and molybdenum supply on yield and nutrient uptake of pearl millet, cowpea and groundnut in Sahelian cropping systems /." Beuren : Grauer, 2001. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=3861863723.

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Alfaress, Serine. "Integrated pest management strategies for a terrestrial isopod, Armadillidium vulgare, in no-till soybean production." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/13656.

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Master of Science<br>Department of Entomology<br>Brian P. McCornack<br>Robert J. Whitworth<br>No-till management of soybean benefits producers by lowering input costs and retaining soil moisture, but may also provide optimal conditions for increasing populations of soil-inhabiting pests. For Kansas soybean, damaging populations of soil-inhabiting isopods (Malacostraca: Isopoda) have been observed in fields under no-tillage management. To control damage to soybean stands from feeding isopods, current management strategies need to be evaluated. The objectives of my research were to evaluate the

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21

Landzela, Besule. "Effects of BT Maize (MON810) crop and its residues on selected soil biological properties and N and P release in a sandy loam soil from Alice, Eastern Cape, South Africa." Thesis, University of Fort Hare, 2013. http://hdl.handle.net/10353/d1007542.

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There are apprehensions that genetic modification of maize with Bacillus thuringiensis (Bt) may have negative effects on soil biodiversity, ecosystem processes and functions. This study aimed at determining the effect of Bt maize crop, Bt maize residues and its genetic modification on microbial biomass carbon (MBC), selected enzyme activities, vesicular arbuscular mycorrhizal (VAM) fungi and N and P release patterns. The study was conducted under field, glasshouse and laboratory conditions. In 2010/2011 season, four maize cultivars; DKC 61-25B (Bt), DKC 61-24 (non-Bt), PAN 6Q-321B (Bt) and PAN

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22

Choi, Suk-won. "The potential and cost of carbon sequestration in agricultural soil empirical study of dynamic model in the midwestern U.S /." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1095676113.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 133 p.; also includes graphics (some col.). Includes bibliographical references (p. 125-133).

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23

Martins, Bianca Assis Barbosa. "Biologia e manejo da planta daninha Borreria densiflora DC." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-25072008-122909/.

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A planta daninha vassourinha-de-botão (Borreria densiflora DC.) está apresentando aumento na sua infestação em áreas cultivadas com cana-de-açúcar e soja, respectivamente nos estados do Maranhão, Goiás e Tocantins. Observações de campo têm relatado a deficiência de controle químico sobre esta espécie, quando ocorre em estádio de crescimento avançado. Sendo assim, este trabalho objetivou classificar botanicamente B. densiflora DC., analisar a influência da luz e da temperatura na germinação desta espécie, seu crescimento, desenvolvimento e estruturas reprodutivas, sua susceptibilidade a herbici

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24

Callum, Ian R. "Long-term effects of tillage and residues on selected soil quality parameters." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31202.

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A two year study was initiated in 1999 at the Macdonald Campus Farm, on a 2.4 ha site consisting mainly of St-Amable sand to shallow loamy sand (Typic Endoaquent; Humic Gleysol). The site was planted to alfalfa ( Medicago sativa) prior to the establishment of the experimental design and has been planted to corn (Zea mays L.) since 1991. The experiment was set up as a randomized complete block design and consisted of three tillage levels (NT, no-till; RT, reduced tillage; and CT, conventional tillage) and two residue levels (-R, no residues; +R, with residues). This study was performed in order

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25

Morais, Maristela Calvente. "Efeito da remoção de quantidades de palha de cana-de-açúcar na biomassa e na comunidade microbiana do solo." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-15122016-105828/.

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O esforço global em diversificar a matriz mundial de combustíveis líquidos, busca substituir as fontes fósseis por renováveis. A produção de bioenergia derivada da biomassa assume importante papel neste cenário. A biomassa gerada após a colheita da cana-de-açúcar ganha destaque como matéria prima pela grande quantidade de material que pode ser usado para geração direta (queima) e indireta (biocombustíveis) de bioenergia. No entanto, ainda pouco se sabe sobre os efeitos da remoção de quantidades de palha de cana-de-açúcar voltado à produção de bioenergia sobre os atributos biológicos do solo. A

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Vasconcelos, Ana Luisa Soares de. "Emissão de gases de efeito estufa do solo devido à remoção de quantidades de palha de cana-de-açúcar e à adubação nitrogenada." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-19122016-163327/.

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A palha de cana-de-açúcar tem sido uma importante matéria prima para aumentar a produção de bioenergia no Brasil. Porém a dinâmica das emissões de gases de efeito estufa no campo devido à prática de remoção de palha ainda não é totalmente compreendida. O objetivo deste trabalho foi quantificar as emissões de GEE do solo devido à remoção da palha de cana-de-açúcar com e sem adição de nitrogênio. Foram realizados dois experimentos com câmaras amostrais de gás mantidas em condições naturais com quatro tratamentos: sem palha, 3, 6 e 12 Mg ha-1, os quais equivalem as intensidades de 100, 75, 50 e 0

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Yi, Cuilin. "Management of Fusarium graminearum-inoculated crop residues effects on head blight, grain yield and grain quality of subsequent winter wheat crops /." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9686268.

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Pituello, Chiara. "Soil carbon management for future challenges in agriculture: the role of crop residues and biochar." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424815.

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Soil loss of organic carbon is a widely recognised global threat. In this view, the study on management practices which precisely focus on soil C is a pressing need for the research community. The incorporation of crop residues at the end of the growing season to reintegrate organic matter losses has been currently jeopardised by their alternative use for bioenergy (mostly biogas production). In north-eastern Italy the fast spread of biogas production has generated two major drawbacks: firstly it has deprived soils from an important source of organic carbon utilizing plant parts which would ot

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Melapi, Aviwe. "Investigation into the characteristics and possible applications of biomass gasification by-products from a downdraft gasifier system." Thesis, University of Fort Hare, 2015. http://hdl.handle.net/10353/d1020174.

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Biomass gasification has attracted the interest of researchers because it produces zero carbon to the atmosphere. This technology does not only produce syngas but also the byproducts which can be used for various application depending on quality.The study conducted at Melani village in Alice in the Eastern Cape of South Africa was aimed at investigating the possible applications of the gasification byproducts instead of being thrown away. Pine wood was employed as the parent feedstock material for the gasifier. Biomass gasification by-products were then collected for further analysis. The stud

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Silvertooth, J. C., A. Galadima, and E. R. Norton. "Residual Soil Nitrogen Evaluations In Irrigated Desert Soils, 2005." College of Agriculture, University of Arizona (Tucson, AZ), 2006. http://hdl.handle.net/10150/198203.

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Field experiments aimed at investigating N fertilizer management in irrigated cotton production have been conducted for the past 16 seasons at three Arizona locations on University of Arizona Agricultural Centers (Maricopa, MAC; Marana, MAR; and Safford, SAC). In 2001-2005, residual N studies were conducted at two of these locations (MAC and MAR). The MAC and SAC experiments have been conducted each season since 1989 and the Marana site was initiated in 1994. The original purposes of the experiments were to test nitrogen (N) fertilization strategies and to validate and refine N fertilization r

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Herman, Tess P. "Optimizing Feedstock Mixtures for Anaerobic Digestion of Food Waste, Brewery Waste, and Crop Residues." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1564764496107388.

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Saini, Monika Van Santen Edzard. "Integration of cover crop residues, conservation tillage and herbicides for weed management in corn, cotton, peanut and tomato." Auburn, Ala, 2009. http://hdl.handle.net/10415/1882.

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Valizadeh, Reza. "Summer nutrition of sheep based on residues of annual crops and medic pastures." Title page, contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09PH/09phv172.pdf.

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Walia, Maninder Kaur. "GYPSUM AND CARBON AMENDMENT’S INFLUENCE ON SOIL PROPERTIES, GREENHOUSE GAS EMISSIONS, GROWTH AND NUTRIENT UPTAKE OF RYEGRASS (Lolium perenne)." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437140322.

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Pimentel, Laisa Gouveia. "Decomposition dynamics of sugarcane straw in the central-southern Brazil." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-21032018-124822/.

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The adoption of mechanical unburned sugarcane harvesting increases the quantity of straw left on the soil. This material has a high potential for 2G ethanol and bioelectricity production. Although the straw maintenance has an essential role in the soil properties and crop performance. The straw decomposition is a key process to investigate and to inform the correct removal management decisions. Diverse factors affect the decomposition rate, such as: quality and quantity of straw; edaphoclimatic conditions; and management practices. Therefore, we conducted a field study at two sites within cent

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Pavei, Mariana Addison. "Decomposição de resíduos culturais e emissão de gases do efeito estufa em sistemas de manejo do solo em Ponta Grossa (PR)." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/91/91131/tde-21092007-110006/.

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Dentre os ecossistemas terrestres, o solo constitui um dos principais reservatórios de carbono (C). As práticas de preparo agrícola alteram esse compartimento, acelerando o processo de oxidação da matéria orgânica do solo, o que favorece a emissão de gases do efeito estufa. O presente trabalho foi desenvolvido em um experimento de longa duração localizado na Fundação ABC em Ponta Grossa (PR) sob diferentes sistemas de manejo do solo: plantio convencional (PC), preparo mínimo (PM), plantio direto (PD) e plantio direto escarificado (PDE), dispostos em blocos ao acaso. Os objetivos foram, determi

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Basanta, Maria Del Valle. "Dinâmica do nitrogênio na cultura de cana-de-açúcar em diferentes sistemas de manejo de resíduos da colheita." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-08092004-163918/.

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Com o objetivo de avaliar, durante cinco anos, o efeito de dois sistemas de manejo dos resíduos culturais, colheita tradicional com queima prévia (CQ) e colheita sem queima (SQ), sobre a produtividade da cana-de-açúcar e a dinâmica do nitrogênio no sistema solo-planta em função do nitrogênio introduzido através do fertilizante e dos resíduos culturais, foi instalado um experimento com adubação no plantio com 63kg.ha-1 de N com os seguintes tratamentos: (T1) 15N-SA (sulfato de amônio) e colheita SQ, recebendo na primeira colheita o total dos resíduos não marcados produzidos no T2; (T2) SA e col

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Moura, Juliana Augusta. "Dinâmica da matéria orgânica em solo tratado com resíduos orgânicos nos Tabuleiros Costeiros do Estado de Sergipe." Pós-Graduação em Agroecossistemas, 2013. https://ri.ufs.br/handle/riufs/6570.

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In the state of Sergipe, more precisely in the center-south region of the Coastal Plains serves as the stage for one of the largest citrus production in the country. The intensive cultivation of these soils reduces the content of organic matter that is the key component to ensure its quality. Thus, the use of alternate layering residues format, can be a viable alternative to the revitalization of citrus orchards. The objective of this study was the evaluation of the labile and stable soil organic matter, carbon management index and microbial activity in soil treated with organic waste an

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Noack, Sarah Ruth. "Crop residue phosphorus: speciation and release in cropping soils." Thesis, 2014. http://hdl.handle.net/2440/87851.

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Crop residues remaining after grain harvest are an important potential source of nutrients, including phosphorus (P), to the cropping system. Crop residues contain both inorganic and organic forms of P and these forms may take different pathways into soil P pools. The rate and quantity of residue P released depends partly on the specific P compounds in the residues. The most commonly used measure of P in crop residues is total P, followed by separate measurement of inorganic P and organic P. These measures do not speciate residue P into specific compounds and consequently, residue P dynamics i

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Qureshi, Maqsood Hassan. "Tall fescue growth and nitrogen uptake as influenced by non-thermal residue management." Thesis, 1994. http://hdl.handle.net/1957/35322.

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Graham, Martha Helena. "The effect of various crop residue management practices under sugarcane production on soil quality." Thesis, 2003. http://hdl.handle.net/10413/10163.

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This study examined the influence of different management practices under sugarcane production on soil chemical, biological and physical properties on a long-term (59yr) field experiment in KwaZulu-Natal. These management practices included conventional post-harvest burning of crop residues, with the tops either left on the soil surface or with tops removed, and green cane harvesting with the retention of crop residues on the soil surface as a trash blanket. Each of these treatments were either fertilized or did not receive fertilizer. The data collected was used to evaluate the effect of crop

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Schumacher, Derek David. "Residue management and yield characteristics of fine fescue seed crops." Thesis, 2005. http://hdl.handle.net/1957/29436.

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Chewings fescue [Festuca rubra L. subsp. fallax (Thuill.) Nyman] is a desired turfgrass with dense sod forming capabilities and superior shade tolerance. Thermal residue management (open-field burning) has traditionally been used to remove post-harvest residue and maintain seed yield over the life of the stand. However, alternative non-thermal residue management practices have been observed to produce adequate seed yields dependent upon cultivar. Strong creeping red fescue (F. rubra L. subsp. rubra) is desired for its prolific tillering capacity and creeping rhizomatous growth habit. In contra

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Meints, Paul David. "Physiological responses of creeping red fescue to stubble management and plant growth regulators." Thesis, 1997. http://hdl.handle.net/1957/33990.

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Legislation to reduce open field burning in grass seed fields within the Willamette valley of western Oregon changed established production practices. In the creeping grasses such as Kentucky bluegrass (Poa pratensis L.) and creeping red fescue (Festuca rubra L.) non-thermal management resulted in reduced yield. Studies were conducted to examine the effects of three stubble height treatments in comparison to open field burning in creeping red fescue seed production. The effects of light quality on characteristics of plant development were investigated in field and controlled environments. Exog

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Azooz, Rahman Hassan. "Influence of crop residue management and tillage on soil thermal and moisture regimes and corn growth." 1991. http://catalog.hathitrust.org/api/volumes/oclc/25645876.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1991.<br>Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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McKeown, Steven. "Discrimination of Agricultural Land Management Practices using Polarimetric Synthetic Aperture RADAR." Thesis, 2012. http://hdl.handle.net/10214/3901.

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This thesis investigates the sensitivity and separability of post-harvest tillage conditions using polarimetric Synthetic Aperture RADAR in southwestern Ontario. Variables examined include: linear polarizations HH, HV, and VV and polarimetric variables: pedestal height, co-polarized complex correlation coefficient magnitude, left and right co-polarized circular polarizations and co-polarized phase difference. Six fine-quad polarimetric, high incidence angle (49°) RADARSAT-2 images acquired over three dates in fall 2010 were used. Over 100 fields were monitored, coincident with satellite overp

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Suriadi, Ahmad. "Structural stability and Na-Ca exchange selectivity of soils under sugarcane trash management." Thesis, 2001. http://hdl.handle.net/2440/110238.

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Rietz, Diana Nicolle. "The effects of compaction and residue management on soil properties and growth of Eucalyptus grandis at two sites in KwaZulu-Natal, South Africa." Thesis, 2010. http://hdl.handle.net/10413/726.

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Schuster, Matthew D. "Annual bluegrass (Poa annua L.) emergence under different residue management practices in perennial ryegrass and determination of resistant and susceptible annual bluegrass germination under controlled temperature and moisture." Thesis, 1999. http://hdl.handle.net/1957/29112.

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With the loss of field burning the amount of crop residue that remains in perennial ryegrass fields has increased. As the amount of crop residue remaining in the field increases so does annual bluegrass. This has resulted in the increased use of herbicides to control annual bluegrass. However, this increased use has also resulted in herbicide-resistant annual bluegrass. Field experiments were initiated in 1997 to investigate residue management options available to growers and their impacts on annual bluegrass emergence. Two sites, Glaser and Wirth, were established with three residue managemen

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(9824864), Sushil Pandey. "Effects of soil health management practices on plant root development." Thesis, 2016. https://figshare.com/articles/thesis/Effects_of_soil_health_management_practices_on_plant_root_development/13387289.

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The plant root system is the connection between the aboveground biomass and the soil system, and it requires a healthy soil environment to support optimum root growth. A healthy and extensive root system allows the plant to explore a greater soil volume for water and nutrients, and thereby increase the likelihood of more productive crop.Intensive vegetable production systems with little or no organic materials incorporated into soil combined with heavy farm traffic and use of chemical fertilizers often lead to detrimental impacts on soil health characteristics, reducing capacity to support ext

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Christ, Robert A. "Effects of long-term residue management and nitrogen fertilization on availability and profile distribution of nitrogen, phosphorus, and sulfur." Thesis, 1992. http://hdl.handle.net/1957/36465.

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