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Dissertations / Theses on the topic 'Tillage Conservation tillage Soil conservation Water conservation'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Hama-Aziz, Zanist Qader. "Assessment of the application of a cover crop and conservation tillage on soil and water properties and on dissolved nitrous oxide in an arable system." Thesis, University of East Anglia, 2016. https://ueaeprints.uea.ac.uk/59671/.

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Agriculture is a major contributor to environmental pollution. About quarter of water bodies in England are classified as being good ecological and chemical status. To tackle agricultural pollution, a range of on-farm mitigation measures are recommended. The overall aim of this study was to assess the effectiveness of cover cropping and reduced cultivation methods as infield mitigation measures to reduce diffuse water pollution, improve soil quality and reduce nitrous oxide greenhouse gas emissions. These mitigation measures were applied to seven fields within the intensive arable River Wensum

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2

Johannsen, Silke Skytte. "The effect of minimum tillage on stream diatom and macroinvertebrate communities : part of the European LIFE project : soil and surface water protection using conservation agriculture in northern and central Europe (SOWAP)." Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540900.

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3

Iqbal, Akhtar. "Effets de la nature et décomposition des mulchs de résidus végétaux sur les services assurés par les sols en agriculture de conservation : Étude expérimentale et modélisation." Thesis, Reims, 2013. http://www.theses.fr/2013REIMS001.

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En agriculture de conservation (AC), les résidus de cultures sous forme de paillis à la surface du sol associés à la suppression du travail du sol sont une composante intrinsèque des systèmes de culture. L'objectif principal de ce travail était de comprendre les effets de la nature et de la décomposition de mulch de résidus s sur les services d'approvisionnement et de régulation fournis par les sols dans les agrosystèmes en AC de régions tempérées (France) et tropicales (Madagascar et le Brésil). Des études expérimentales ont été réalisées pour obtenir des paramètres de décomposition pour une

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4

Stenberg, Maria. "Soil tillage influences on nitrogen conservation /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1998. http://epsilon.slu.se/avh/1998/91-576-5468-9.gif.

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5

Syed, Nasser. "The Influence of Conservation Tillage and Conventional Tillage on Soil Bacterial Diversity in Southern Illinois." Thesis, The University of Southern Mississippi, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10750260.

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<p> Agriculture in the Midwest United States (Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, and Wisconsin) is a critically important component of the United States economy and also for world exports of food grain. This is well reflected in the 2012 Census of Agriculture which showed that these states had a market value of crop and livestock products sold in excess of $80,000,000,000 (USDA, 2012). Within the U.S. the three Midwest states, Illinois, Iowa, and Minnesota are ranked 2nd, 3rd, and 4th for the economic value of crops sold. This economic value of agriculture in the Midwest encom

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6

Bornkampf, Constance. "Experimentelle Untersuchung zum Einfluss der Makroporendichte auf das Infiltrationsverhalten landwirtschaftlich genutzter Böden." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2014. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-131748.

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Soil is an important ecosystem and at the same time filter and storage for water. With respect to flood and erosion prevention, it is important to improve water retention and infiltration rates in soils to reduce surface run-off. The aim of the study is to quantify the influence of biogenic macropores on infiltration. The effect of the cropping system and management practices on macropore density and infiltration rate was examined. Soil hydraulic conductivity was determined by soil column experiments and field investigations using a hood infiltrometer and rainfall-simulation experiments. Macr

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7

Perrotta, Robert J. "Evaluation of Soil Quality and Conservation versus Conventional Tillage Methods in Trumbull County." Youngstown State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1630013039975876.

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8

Hares, Mohammad Abu. "Effects of mulching on the surface energy balance and soil thermal regimes." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28837.

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The effects of a straw mulch, applied either uniformly or in strips, on the surface energy balance and soil thermal regimes are investigated using a numerical solution to the two-dimensional soil heat transfer equation. The numerical technique used is an extended version of Barakat and Clark's (1966) alternating direction explicit method. The modified technique can solve problems that are periodic in time and/or space, on either rectangular domains or domains with a curvilinear upper boundary, and in which the soil thermal properties may vary with position, time, or temperature. The method als

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9

Shahidi, Seyed-kazem. "The effects of narrow seeding points on soil structure, seed placement and crop growth in direct drilling systems." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phs5255.pdf.

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Bibliography: p. 182-197. The objectives of this study are: selection and construction of four narrow sowing points, evaluation of these points in terms of draught requirements and wear rates, comparison of the points in direct drilling systems and their effects on soil physical properties.

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10

Mangalassery, Shamsudheen. "The impact of conservation tillage on soil quality and potential for climate change mitigation." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13770/.

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Conservation tillage is generally considered as an important component of sustainable agriculture. The benefits of conservation tillage have been presented as reducing runoff, enhancing water retention and preventing soil erosion. There is also general agreement that it can be used to conserve and enhance soil organic carbon levels to some extent. However, its applicability in mitigating climate change has been extensively debated, especially when the whole profile of carbon in soil is considered along with a reported risk of enhanced N2O emissions under conservation tillage. The suitability o

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11

Mellinger, Andrew. "THE EFFECT OF CONSERVATION TILLAGE AND TOPOGRAPHIC POSITION ON SOIL PROPERTIES IN CENTRAL ILLINOIS." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1810.

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Since agriculture began, field management has been at the forefront of expanding food production beyond previous limitations. Agricultural productivity is closely related to the physical, chemical, and biological properties of the soil. Landscape position and field management are among primary factors affecting these soil properties. Delineation of topographic positions of the field surface by shape (i.e., convex, concave, and linear) characterizes areas that may accumulate or lose soil and nutrients either during a discrete event or cumulatively over several growing seasons. Increased soil co

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12

Simoes, Rui Pedro Mota Raper Randy L. "Reduction of soil compaction in a cotton and peanut rotation using conservation systems." Auburn, Ala., 2008. http://hdl.handle.net/10415/1533.

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13

Jones, Bruce. "Impact of Conservation Tillage on Soil Erosion and the Agronomic Performance of Flue-Cured Tobacco." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/40537.

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Conservation tillage tobacco production has gained little producer acceptance since introduction in the late 1960's. Yield reductions, tobacco quality issues, unacceptable weed control, and inadequate planting equipment limited practice adoption and substantiated the need for continued research. The recent developments of a Subsurface Tiller-TransplanterTM and the herbicide SpartanTM renewed producer interest in conservation tillage and led to an investigation with both flue-cured and Virginia dark-fired tobacco. Flue-cured tobacco was transplanted into rye mulch on bedded rows and subseque

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14

Mohammed, Fazal. "Sugarbeet development in a Ste. Rosalie clay as an indicator of soil structure variation in conservation tillage studies." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66133.

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15

Baradi, Niranjan Kumar. "Factors affecting the adoption of tillage systems in Kansas." Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1142.

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16

Kethobile, Elias. "An investigation of tillage systems and implement design for water conservation in semi arid conditions in Botswana." Thesis, Cranfield University, 2006. http://hdl.handle.net/1826/1383.

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Botswana, as a semi arid country, is faced with serious shortage of moisture for crop production. Its challenging climatic condition makes the little moisture received from summer rainfall insufficient. The development of appropriate tillage systems can assist with sustainable crop production. The aim of this project was to come up with a tillage system to improve the suitability of the physical conditions of soil for effective seeding in rain fed farming in Botswana. Strip, Reservoir (depression) and no tillage systems (control) were therefore investigated. Laboratory investigation of the til

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17

Alghamdi, Rashad Saeed. "Soil Warming and Drying and the Consequence to Crop Yields among Conservation Tillage Practices in Frigid Corn-Soybean Fields." Thesis, North Dakota State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10605433.

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<p> Concerns over delayed soil warming and drying have hindered adoption of conservation tillage practices in frigid environments. Our objectives were to evaluate the effects of chisel plow (CP), vertical tillage (VT), strip tillage with coulters (STC), and strip tillage with shanks (STS) on soil warming and drying and their potential consequences to crop yields. A two-year study was conduct at three full-scale, producer-managed, corn-soybean fields in the Red River Valley of eastern North Dakota and western Minnesota. Tillage treatments were assessed to measure crop residue cover, soil temper

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18

Laird, Megan K. "Surface and groundwater quality impacts of conservation tillage practices on burley tobacco production systems in Southwest Virginia." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9728.

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This study measured sediment, nutrient and pesticide edge-of-field and deep percolation losses from conventional tillage (CT), strip tillage (ST), and no-till (NT) treatments in a burley tobacco production system. The field experiment results show that the CT treatment yielded more total runoff, 93.6 mm, than ST and NT. Compared to the CT treatment, ST reduced the total mass loss of NO₃⁻ by 37 percent, NH₃ by 54 percent, PO₄³⁻ by 12 percent, TP by 65 percent and TSS by 64 percent. The NT treatment reduced the total mass of NO₃⁻ by 49 percent, NH₃ by 46 percent, PO₄³⁻ by 17 percent, TP by 73 pe

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19

Morell, Soler Francisco Joaquín. "Soil organic carbon dynamics and carbon sequestration in a semiarid Mediterranean agroecosystem: effects of conservation tillage and nitrogen fertilization." Doctoral thesis, Universitat de Lleida, 2012. http://hdl.handle.net/10803/101151.

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El balanç entre l´entrada de C (dels residus vegetals) i sortides de C (principalment com CO2 de la descomposició del carboni orgànic del sòl -SOC-), determina el contingut de SOC, que és el depòsit de C més voluminós a la superfície terrestre. Als agroecosistemes semiàrids Mediterránis, l’aigua és el principal factor limitant del creixement del cultiu i de l´entrada de residus al sòl. Les pràctiques agronòmiques alternatives poden millorar el creixement vegetal i augmentar la quantitat de residus (entrada de C) en aquestos sistemes. No obstant això la resposta del contingut de SOC dependrà de

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20

Prater, Jacob. "Long term effects of phosphorus and conservation tillage management on crop yield and soil phosphorus in corn-soybean rotations." [Ames, Iowa : Iowa State University], 2007.

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21

Quintero, Marcela. "Effects of conservation tillage in soil carbon sequestration and net revenues of potato-based rotations in the Colombian Andes." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0025114.

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22

Alghamdi, Rashad Saeed. "Soil Warming and Drying and the Consquence to Crop Yields among Conservation Tillage Practices in Frigid Corn-Soybean Fields." Thesis, North Dakota State University, 2017. https://hdl.handle.net/10365/28405.

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Concerns over delayed soil warming and drying have hindered adoption of conservation tillage practices in frigid environments. Our objectives were to evaluate the effects of chisel plow (CP), vertical tillage (VT), strip tillage with coulters (STC), and strip tillage with shanks (STS) on soil warming and drying and their potential consequences to crop yields. A two-year study was conduct at three full-scale, producer-managed, corn-soybean fields in the Red River Valley of eastern North Dakota and western Minnesota. Tillage treatments were assessed to measure crop residue cover, soil temperatur

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23

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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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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25

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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26

Telles, Tiago Santos 1984. "Conservação dos solos e preços de terras agrícolas no Brasil." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/286458.

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Orientador: Bastiaan Philip Reydon<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Economia<br>Made available in DSpace on 2018-08-27T05:27:00Z (GMT). No. of bitstreams: 1 Telles_TiagoSantos_D.pdf: 2532419 bytes, checksum: 074d49e9f68a6dcd4d343ff801020e43 (MD5) Previous issue date: 2015<br>Resumo: Os preços de terras agrícolas podem ser determinados tanto pelos fatores produtivos quanto pelos fatores especulativos. Entre os fatores produtivos, é reconhecido que investimentos na conservação dos solos em áreas destinadas às atividades agropecuárias podem valorizar as terr

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Buscarato, Eder Alexandre. "Medição de forças no corte de raizes de cepas de especies de eucaliptos." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257058.

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Orientador: Paulo Sergio Graziano Magalhães<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola<br>Made available in DSpace on 2018-08-09T21:21:28Z (GMT). No. of bitstreams: 1 Buscarato_EderAlexandre_M.pdf: 14445069 bytes, checksum: c3e2d83e7b2d506697ea88ad7cc248cf (MD5) Previous issue date: 2007<br>Resumo: Nas áreas de reflorestamento de pinus e eucaliptos onde não é utilizada a eliminação da cepa através da queima e do preparo intensivo do solo, o plantio das novas mudas passou a ser feito na entrelinha de cepas. Acreditava-se que após 7 anos, qu

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28

Wang, Zheng. "THE INFLUENCE OF PRODUCTION PRACTICES, TILLAGE, AND ENDOPHYTIC BACTERIA ON BELL PEPPER PRODUCTIVITY AND PHYSIOLOGY UNDER DIFFERENT IRRIGATION REGIMES." UKnowledge, 2015. http://uknowledge.uky.edu/pss_etds/55.

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To evaluate the strip tillage in organic bell pepper (Capsicum annuum L.) production as an integrated system for sustainable vegetable cropping two-years of field trials were conducted in 2011 and 2012. The field trials were conducted to determine the viability of strip tillage in conventional and organic bell pepper production systems by comparing plant growth, water status, and fruit yield to plastic mulch grown plants application under different irrigation regimes. The two-year field data demonstrated that organic pepper with strip tillage application was a viable combination that produced

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29

Naime, João de Mendonça. "Um novo método para estudos dinâmicos, in situ, da infiltração da água na região não-saturada do solo." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-13092001-091113/.

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A agricultura é a atividade humana que mais afeta o meio ambiente. Imensas quantidades de insumos agrícolas são aplicados sobre o solo e grande parte destes degrada os recursos hídricos. Para uma investigação adequada do efeito destes insumos, estudam-se as propriedades hidráulicas do solo, que influem no transporte de solutos neste meio. Medir tais propriedades e modelar os parâmetros correlatos são tarefas extremamente complexas, devido ao tempo requerido, dinheiro, instrumentação e escala. As metodologias convencionais inferem as propriedades hidráulicas em amostras que estão em equilíbrio,

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30

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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Meyer-Wolfarth, Friederike [Verfasser], and Roland [Akademischer Betreuer] Klein. "Biological control of plant pathogenic fungi and the regulation of mycotoxins by soil fauna communities in a conservation tillage system as ecosystem services for soil health / Friederike Meyer-Wolfarth ; Betreuer: Roland Klein." Trier : Universität Trier, 2017. http://d-nb.info/1197703071/34.

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Kreiselmeier, Janis Leonhard [Verfasser], Karl-Heinz [Gutachter] Feger, Kai [Gutachter] Schwärzel, and Gerd [Gutachter] Wessolek. "Temporal changes in the soil pore size distribution and variability of soil hydraulic properties under long-term conventional and conservation tillage / Janis Leonhard Kreiselmeier ; Gutachter: Karl-Heinz Feger, Kai Schwärzel, Gerd Wessolek." Dresden : Technische Universität Dresden, 2020. http://d-nb.info/1231917113/34.

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Penick, William Frazier. "Influence of Transplanter Modification and Previous Crop on the Production of No-Till Dark Tobacco." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1257.

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Dark tobacco (Nicotiana tabacum L.) has historically been produced usingconventional tillage practices. Soil is cultivated multiple times throughout a growing season leading to an increased incidence of soil erosion. No-till systems have been growing in popularity with the advent of new technology that has enabled the practice to be performed effectively and efficiently. With the recent expansion of no-till practices throughout the agricultural community, many crops have had success in producing comparable yields while reducing input costs and saving soil resources. For this experiment, a trad

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Malone, Melanie. "Using Critical Physical Geography to Map the Unintended Consequences of Conservation Management Programs." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3639.

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A variety of conservation trends have gained and lost favor throughout the years in agriculture, with U.S. Farm Bills often influencing what conservation practices are implemented by farming communities throughout the U.S. This dissertation focuses on the unintended consequences of conservation management practices in the Fifteenmile Watershed of Wasco County, Oregon. Specifically, I seek to address how farmer enrollment in various conservation techniques, loosely defined as no-till agriculture, has affected soil and water quality through the increased use of herbicide, and subsequently render

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Beraldo, José Marcos Garrido [UNESP]. "Armazenamento de água no solo em sequências de culturas de verão e inverno sob semeadura direta." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/105255.

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Made available in DSpace on 2014-06-11T19:33:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-20Bitstream added on 2014-06-13T21:06:47Z : No. of bitstreams: 1 beraldo_jmg_dr_jabo.pdf: 1719744 bytes, checksum: a27050b0770082469a896d7df06651eb (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O sistema de semeadura direta (SSD) proporciona melhores condições físicas do solo favorecendo o armazenamento de água no solo (ARM). A hipótese do trabalho foi que o Latossolo Vermelho argiloso, em sequências de culturas de verão e inverno sob SSD afeta o ARM em

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Lanzanova, Mastrângello Enivar. "SISTEMAS DE CULTURAS EM PLANTIO DIRETO ADAPTADOS À PEQUENA PROPRIEDADE RELACIONADOS COM A EROSÃO E ATRIBUTOS DE UM ARGISSOLO VERMELHO." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/3577.

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Considering soil management systems, are rare the research projects that are carried on by a time period long enough to several soil attributes may be expressed conveniently. The no-till system influences several soil attributes and in this context, this study aimed to evaluate the effect of tillage system with the use of cover crops in winter and summer, on some chemical and physical soil attributes after long-term adoption of the system. Also aimed to evaluate the corn grain yield, dry matter production and carbon by different cropping systems, the stock of organic carbon and nitrogen in the

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Deuschle, Dinis. "Controle do escoamento superficial e das perdas de solo em sistema plantio direto na escala de lavoura." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/11726.

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The evidence of the formation of surface flow and associated processes such as erosion, transfer of solutes, organic matter and nutrients, are the consequences of soil management not contributing to the maintenance of soil functions, especially those associated to the regulation of hydrological flows. This situation leads to soil degradation, degradation of water resources and waste inputs. Considering the principles of conservation agriculture, numerous practices of soil, plant and field management are likely to be used in order to solve problems. Given this, the objective of this work was to

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Beraldo, José Marcos Garrido. "Armazenamento de água no solo em sequências de culturas de verão e inverno sob semeadura direta /." Jaboticabal : [s.n.], 2011. http://hdl.handle.net/11449/105255.

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Resumo: O sistema de semeadura direta (SSD) proporciona melhores condições físicas do solo favorecendo o armazenamento de água no solo (ARM). A hipótese do trabalho foi que o Latossolo Vermelho argiloso, em sequências de culturas de verão e inverno sob SSD afeta o ARM em decorrência da modificação nos atributos físicos do solo e que o tensiômetro de punção digital (TDig) pode ser usado para medir o potencial mátrico da água no solo. Os objetivos foram avaliar o ARM e os atributos físicos do solo em sequências de culturas de verão e de inverno sob SSD e medir o potencial mátrico da água no solo

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39

Li, Haixiao. "Impact à long terme du travail du sol sur le cycle biogéochimique du phosphore : analyse de l'essai L'Acadie (Québec, Canada) et modélisation." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0223/document.

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La pratique du «sans labour» (NT) se développe dans le cadre de l’agriculture de conservation des sols. Cette pratique modifie nombre de propriétés du sol comme, par exemple, la répartition du phosphore (P) dans le profil du sol. L’objectif de cette thèse est d’analyser les impacts après plusieurs décennies du NT sur le cycle biogéochimique du P et d’intégrer ces effets dans un modèle de fonctionnement. Nous avons utilisé un essai au champ de longue durée sous maïs-soja (L’Acadie, Québec, Canada) implanté sur un sol argilo-limoneux. Le dispositif était un split-plot à 4 blocs avec mouldboard p

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Lino, Jane Siqueira. "Evolução do sistema plantio direto e produção de sedimentos no Rio Grande do Sul." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-17092010-181206/.

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Conciliar as crescentes demandas da produção agrícola com a garantia da produtividade do solo exige decisões rápidas e apoiadas em informação confiável acerca de impactos esperados. Compreender o efeito de grandes dinâmicas de alteração do uso do solo sustenta decisões futuras quanto à implementação de práticas sustentáveis de manejo. O presente estudo objetivou avaliar a dinâmica da produção de sedimentos no Rio Grande do Sul em conseqüência da evolução do plantio direto a partir da modelagem em larga escala de dados secundários acesso público. Primeiramente, a validade da aplicação de um mod

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41

Schumann, Martin. "Untersuchungen zur Erfassung der Nitratverlagerung und Stickstoffkonservierung während des Winters in Abhängigkeit von der Bodenbearbeitung, Bodenbedeckung und N-Düngung." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2005. http://dx.doi.org/10.18452/15366.

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Im Rahmen eines vierjährigen Feldversuches wurden der Einfluss von Bodenbearbeitung, Bodenbedeckung und Stickstoffdüngung auf die N-Dynamik und N-Verlagerung während der Winterhalbjahre und deren Nachwirkungen auf die Hauptfrucht der nachfolgenden Vegetationsperiode untersucht. Es zeigte sich, dass sich neben den Prüffaktoren auch Unterschiede der Vorfrucht und des Witterungsverlaufes auf die Höhe der Nitratauswaschung über Winter auswirkten. Generell führte der Anbau von Winterrübsen gegenüber der Brache erwartungsgemäß zu einer Reduzierung des N-Austrages, was sowohl auf die geringeren Sicke

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Gassen, José Renê Freitas. "Avaliação de ferramenta para a escarificação do solo em camadas de forma simultânea." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/3600.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The growing demand for energy that causes the increased traffic of agricultural machinery, larger and more robust, acts negatively on soil compaction, directly and indirectly affecting crop productivity, as many changes in soil physical attributes. As a potential technique to solve this problem has the chiseling, which promotes the disruption of these compacted layers, without causing the inversion of the soil, keeps the plant residues deposited on the surface, improves infiltration, the structure and porosity of the soil and

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Hilfiker, Ruth E. "Conservation tillage effects on soil compaction and corn root growth." 1986. http://catalog.hathitrust.org/api/volumes/oclc/15515267.html.

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Tshigoli, Vhonani Lucadia. "Resilience to crusting of soils under conventional tillage and conservation agriculture." Diss., 2020. http://hdl.handle.net/11602/1628.

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MSCAGR (Soil Science)<br>Department of Soil Science<br>Soil resilience is the ability of a soil to recover its function or capacity after applied stress such as crusting. Some soils have high potential for recovery while others have poor resilience. Soils with poor resilience are much more vulnerable to degradation. Many soils in South Africa are susceptible to crust formation, which affects many soil surface properties and processes and hence productivity. The objectives of this study were to demonstrate how soil resilience to crust formation is affected by conventional tillage and conservati

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Bornkampf, Constance. "Experimentelle Untersuchung zum Einfluss der Makroporendichte auf das Infiltrationsverhalten landwirtschaftlich genutzter Böden." Doctoral thesis, 2013. https://tubaf.qucosa.de/id/qucosa%3A22901.

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Soil is an important ecosystem and at the same time filter and storage for water. With respect to flood and erosion prevention, it is important to improve water retention and infiltration rates in soils to reduce surface run-off. The aim of the study is to quantify the influence of biogenic macropores on infiltration. The effect of the cropping system and management practices on macropore density and infiltration rate was examined. Soil hydraulic conductivity was determined by soil column experiments and field investigations using a hood infiltrometer and rainfall-simulation experiments. Macr

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Kreiselmeier, Janis Leonhard. "Temporal changes in the soil pore size distribution and variability of soil hydraulic properties under long-term conventional and conservation tillage." 2019. https://tud.qucosa.de/id/qucosa%3A72958.

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Conservation tillage systems are increasingly adapted replacing conventional turnover moldboard plowing practices worldwide. This is part of a sustainable intensification of agriculture to meet future global food demand while at the same time sustaining environmental resources. The choice of tillage system affects soil structure and thereby also soil hydraulic properties (SHP) such as the water retention characteristic (WRC) and the hydraulic conductivity characteristic (HCC). Effects of agricultural management on SHP have been widely studied in the past decades. Thereby, temporal variations w

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Bassett, Terri Storm. "A comparison of the effects of tillage on soil physical properties and microbial acitivity at different levels of nitrogen fertilizer at Gourton Farm, Loskop, KwaZulu-Natal." Thesis, 2010. http://hdl.handle.net/10413/660.

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Long-term food security and environmental quality are closely linked to maintaining soil quality. Therefore, the assessment of the effect of agricultural management practices on soil chemical, physical and biological parameters provide fundamental information about sustainability. An agricultural management practice which has received much attention in the last decade is tillage. The loss of topsoil due to erosion and a reduction of soil organic matter under conventional tillage practices, together with escalating fuel prices, have lead to the increased implementation of conservation tillage p

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Dieckmann, Jan. "Zur Bedeutung der Bodenstruktur für den Ertrag von Zuckerrüben." Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-B027-1.

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Prajapati, Prajaya. "Biological potential and diffusion limitation of methane oxidation in no-till soils." Thesis, 2014. http://hdl.handle.net/1805/4446.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Long term no-till (NT) farming can improve the CH4 oxidation capacity of agricultural lands through creation of a favorable soil environment for methanotrophs and diffusive gas transport. However, limited data is available to evaluate the merit of that contention. Although the potential for biological CH4 oxidation may exist in NT soils, restricted diffusion could limit expression of that potential in fine-textured soils. A study was conducted to assess the CH4 oxidation potential and gaseous diffusivity of soils under plow till (PT)

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