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Tesis sobre el tema "Crop rotations"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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1

Arnet, Kevin Broc. "Cover crops in no-tillage crop rotations in eastern and western Kansas." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4086.

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2

Paton, Lewis William. "A robust Bayesian land use model for crop rotations." Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11484/.

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Often, in dynamical systems, such as farmers’ crop choices, the dynamics are driven by external non-stationary factors, such as rainfall and agricultural input and output prices. Such dynamics can be modelled by a non-stationary stochastic process, where the transition probabilities are functions of such external factors. We propose using a multinomial logit model for these transition probabilities, and investigate the problem of estimating the parameters of this model from data. We adapt the work of Chen and Ibrahim to propose a conjugate prior distribution for the parameters of the multinomi
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3

Sciarresi, Cintia Soledad. "OPTIMIZING COVER CROP ROTATIONS FOR WATER, NITROGEN AND WEED MANAGEMENT." UKnowledge, 2019. https://uknowledge.uky.edu/pss_etds/122.

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Winter cover crops grown in rotation with grain crops can be an efficient integrated pest management tool (IPM). However, cover crop biomass production and thus successful provisioning of ecosystem services depend on a timely planting and cover crop establishment after harvest of a cash crop in the fall. One potential management adaptation is the use of short-season soybeans to advance cover crop planting date in the fall. Cover crops planted earlier in the fall may provide a greater percentage of ground cover early in the season because of higher biomass accumulation that may improve weed sup
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4

McLaughlin, Michael John. "Phosphorus cycling in soil under wheat-pasture rotations /." Title page, contents and summary only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phm1615.pdf.

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5

Bhogaraju, Prabhakar V. "A Case-Based Reasoner for Evaluating Crop Rotations in Whole-Farm Planning." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/36817.

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I have worked on a Case-Based Reasoning (CBR) system that evaluates crop rotations for their soil erosion and risk of insect pest problems. The purpose of this system is to provide decision support for an automated whole-farm planner (CROPS). CROPS (Buick et al., 1992) generates crop rotation plans that can address some of the environmental, economic and legislative pressures facing natural resource managers. To generate and recommend a crop rotation plan CROPS requires estimates on the soil erosion risks and pesticide pollution potential of the crop rotation. In this research I have designed
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6

Eleki, Krisztina. "Soil management, crop rotations, and biomass removal effects on soil organic matter content." [Ames, Iowa : Iowa State University], 2007.

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7

Meiss, Helmut. "Diversifying crop rotations with temporary grasslands : potentials for weed mangement and farmland biodiversity." Phd thesis, Université de Bourgogne, 2010. http://tel.archives-ouvertes.fr/tel-00575607.

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Crop rotation may be used to prevent the continuous selection of particular weed species adapted to one crop type. This might be useful for weed management, economy in herbicide applications and promoting biodiversity. Common simple crop sequences might be diversified by introducing perennial forage crops. Impacts of such perennial crops on weeds were studied with four approaches : 1) Large-scale weed surveys in 632 fields in western France showed that weed species composition differed most strongly between perennial alfalfa crops and annual crops. Comparisons of fields before, during and afte
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8

Abreu, Daniel Carneiro de. "Whole-farm modeling approach to evaluate different crop rotations in organic dairy systems." Universidade Federal de Viçosa, 2014. http://www.locus.ufv.br/handle/123456789/6596.

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Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2015-11-09T15:34:52Z No. of bitstreams: 1 texto completo.pdf: 492609 bytes, checksum: 66747ed601f7421b79e4e7f037a223b9 (MD5)<br>Made available in DSpace on 2015-11-09T15:34:52Z (GMT). No. of bitstreams: 1 texto completo.pdf: 492609 bytes, checksum: 66747ed601f7421b79e4e7f037a223b9 (MD5) Previous issue date: 2014-09-25<br>Fundação de Amparo à Pesquisa do Estado de Minas Gerais<br>O mercado de trigo (Triticum aestivum L.) orgânico para produção de pão cresceu em grande magnitude na região da Nova Inglaterra, nos Estados Unidos.
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9

Latta, Roy A. "Improving medic pastures in pasture-wheat rotations in the Mallee district of North-Western Victoria /." Title page, contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09A/09al364.pdf.

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10

Bilek, Meredith K. "Winter annual rye cover crops in no-till grain crop rotations impacts on soil physical properties and organic matter /." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7268.

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Thesis (M.S.) -- University of Maryland, College Park, 2007.<br>Thesis research directed by: Dept. of Natural Resource Sciences and Landscape Architecture. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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11

Hariharan, Janani. "Predictive Functional Profiling of Soil Microbes under Different Tillages and Crop Rotations in Ohio." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1435856176.

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12

Daniel, John Sathiaseelan. "Strategies for the management of root-knot nematodes with biocontrol agents and crop rotations for vegetable crops in small farms." Thesis, University of Reading, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402591.

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13

Petrosino, Justin Scott. "Response of weeds to the intensification of Kansas No-Till crop rotations with cover cropping." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4095.

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14

Swiegelaar, Nina Antionette. "Evaluating the effect of crop rotations and tillage practices on soil water balances of selected soils and crop performances in the Western Cape." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86237.

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Thesis (MScAgric)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The aim of this study was to investigate the influence of crop rotation and soil tillage on the soil water balance and water use efficiency of wheat, canola, lupin and medics in the Swartland sub region of the Western Cape. This trail was conducted as a component study within a long-term crop rotation/tillage trial during 2012 and 2013 at the Langgewens Research Farm (33016’42.33” S; 18042’11.62” E; 191m) of the Western Cape Department of Agriculture near Moorreesburg. The experiment was laid out as a randomized complete b
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15

Hoang, Fagerström Minh Ha. "Agroforestry systems in northern Vietnam with Tephrosia candida as an alternative to short-fallow crop rotations /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5737-8.pdf.

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16

Almadni, Mftah Alhusen Alhadi. "Impact of agricultural management on risks of nitrate leaching in crop rotations with potatoes and cereals." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2713.

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There is concern about increased nitrate levels in drinking water due to potential impacts on human health. At the same time there are also concerns about the environmental impact of increased levels of nitrate in surface water systems; the increased amount of nitrate in surface water can cause eutrophication. It has become almost axiomatic that nitrate which comes from agriculture soils is one of the main drivers of the increased nitrate levels in water. Arable agriculture is considered to be one of the main sources of nitrate due to high rates of nitrogen fertiliser or manure application, no
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17

Fagerström, Minh Ha Hoang. "Agroforestry systems in Northern Vietnam with Tephrosia candida as an alternative to short-fallow crop rotations /." Uppsala : Swedish University of Agricultural Sciences, 2000. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009004572&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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18

Zou, Congming. "SOIL MANAGEMENT AND NITROGEN DYNAMICS IN BURLEY TOBACCO ROTATIONS." UKnowledge, 2015. http://uknowledge.uky.edu/pss_etds/64.

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Agronomic practices, including tillage, crop rotation and N fertilization, have been developed to efficiently manage soil N dynamics and crop N nutrition. These practices can affect soil organic carbon (SOC) and soil total nitrogen (STN) sequestration, and consequently influence soil nitrogen mineralization (SNM) and crop N nutrition. However, little research has been systematically and simultaneously conducted to examine the effect of agronomic management on (1) SOC and STN stocks; (2) SNM; and (3) crop N nutrition. Burley tobacco (Nicotiana tobacum L.) is a N demanding crop and subject to in
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19

Gonzalez-Maldonado, Noelymar. "Evaluating the Effects of Long-Term No-Till and Crop Rotations in Soil Health and Corn Productivity." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1557142156675221.

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20

Koomson, Eric [Verfasser], and Georg [Akademischer Betreuer] Cadisch. "Benefits and trade-offs of legume-led crop rotations on crop performance and soil erosion at various scales in SW Kenya / Eric Koomson ; Betreuer: Georg Cadisch." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2021. http://d-nb.info/1239729413/34.

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21

El-Kholei, Ahmed Mohammed Salah. "Evaluating the impact of economic agricultural policies during the reform era for major crops and crop rotations in Egypt : a policy analysis matrix approach." Thesis, University of Nottingham, 2003. http://eprints.nottingham.ac.uk/13346/.

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In 1986, Egypt implemented a succession of comprehensive economic reforms both in the agriculture sector and more generally such as the Economic Reform and Structural Adjustment Program (ERSAP) of 1991. Since then, the agricultural sector has been gradually transformed from one characterised by central planning and governmental controls to one that is more free market oriented. This study employs the Policy Analysis Matrix technique to evaluate the impacts of reform policies on eleven major crops (wheat, maize, sugar cane, soy bean, broad bean, cotton, rice, tomatoes, potatoes, long and short
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22

Hall, G. S. "A study of the microbial association with root senescence in winter wheat following various long-established crop rotations." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355006.

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23

Weeks, James Michael Jr. "Perennial Grass Based Crop Rotations in Virginia: Effects on Soil Quality, Disease Incidence, and Cotton and Peanut Growth." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/35394.

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In 2003 eight peanut and cotton crop rotations were established in southeastern Virginia, 4 of which included 2 or 3 years of tall fescue or orchardgrass grown as high-value hay crops. Each crop rotation was evaluated for changes in soil quality indicators including soil carbon and nitrogen, water stable soil aggregates, plant available water content, bulk density, cone index values, and soil moisture. Cotton and peanut growth and yield were also observed to evaluate changes in crop growth associated with differences in soil quality. Soilborne plant pathogens including root-knot nemat
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24

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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25

Krato, Christoph [Verfasser], and Roland [Akademischer Betreuer] Gerhards. "Consequences for weed management in crop rotations by introducing imidazolinone-tolerant oilseed rape varieties / Christoph Krato. Betreuer: Roland Gerhards." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2013. http://d-nb.info/1029506744/34.

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26

Rached, E. M. "The effects of fertilization and crop rotations on rainfed barley development, growth and yields, in a semi-arid mediterranean-type climate /." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74366.

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A study was conducted for two growing seasons in northeastern Syria to evaluate the effect of N and P fertilizers and previous crops--i.e. vetch (Vicia sativa L.), barley (Hordeum vulgare L. cv. Beecher) or fallow--on water consumption, development, growth and yields of barley in a semi-arid, Mediterranean-type climate.<br>The two seasons contrasted in rainfall and temperature which affected soil N, water use and yields. Fertilizer addition and residual P were the major determinants in barley yield increases. Rotation effects were significant only when fertilizers were added. Fallowing was an
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27

Angeletti, Carlo. "Long term and short term effects of crop rotations in organic farming on soil organic matter content and stabilization dynamics." Doctoral thesis, Università Politecnica delle Marche, 2016. http://hdl.handle.net/11566/243104.

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La gestione del suolo in agricoltura puo’ contribuire significativamente ad accrescere la qualita’ dei suoli. Pratiche quali le lavorazioni minime, l’applicazione di ammendanti organici e la coltivazione di colture di copertura costituiscono delle valide strategie per accrescere il contenuto di sostanza organica nei suoli agricoli e squestrare CO2 dall’atmosfera, riducendo l’impatto ambientale dell’attivita’ agricola. Il contenuto di carbonio organico (OC) nel suolo e’ controllato dall’entita’ degli input di materiale organico che giungono al suolo in seguito alla coltivazione, e dalla resiste
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28

Stubbs, Victoria. "The use of Tagetes erecta and Pasteuria penetrans within crop rotations for the control of Meloidogyne spp. in microplots in Zimbabwe." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312561.

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29

Boglaienko, Daria. "Buckwheat as a Cover Crop in Florida: Mycorrhizal Status, Soil Analysis, and Economic Assessment." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/921.

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This thesis analyses buckwheat as a cover crop in Florida. The study was designed to demonstrate: soil enrichment with nutrients, mycorrhizal arbuscular fungi interactions, growth in different soil types, temperature limitations in Florida, and economic benefits for farmers. Buckwheat was planted at the FIU organic garden (Miami, FL) in early November and harvested in middle December. After incorporation of buckwheat residues, soil analyses indicated the ability of buckwheat to enrich soil with major nutrients, in particular, phosphorus. Symbiosis with arbuscular mycorrhizal fungi increased in
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30

Götze, Philipp [Verfasser]. "Impact of specialised sugar beet crop rotations on soil fertility parameters and on yield and yield stability of sugar beet / Philipp Götze." Halle, 2017. http://d-nb.info/1137867655/34.

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31

Pichardo, Sergio Tomás. "Occurrence of diseases and insect pests in select soybean (Glycine max (L.) Merr.) and sorghum (Sorghum bicolor (L.) Moench) rotations in Mississippi." Diss., Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-09242007-142233.

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32

Jasionė, Vaidutė. "Sėjomainų ir tarpinių pasėlių įtaka dirvos piktžolėtumui ir fermentų aktyvumui ekologinėje žemdirbystėje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110603_114217-63789.

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Tyrimai atlikti 2008–2009 m. Lietuvos žemės ūkio universiteto Bandymų stotyje. Dirvožemis – karbonatingas sekliai glėjiškas išplautžemis (Calc(ar)i-Epihypogleyic Luvisol). Tyrimo A veiksnys – 4 septynių narių sėjomainų rotacijos su nevienoda azotą fiksuojančių augalų dalimi: I – 43 proc. (daugiametės žolės → daugiametės žolės → žieminiai kviečiai → vasariniai miežiai → žirniai → žieminiai kviečiai → miežiai), II – 43 proc. (daugiametės žolės → žieminiai kviečiai → žirniai → vasariniai miežiai su įsėliu → daugiametės žolės → žieminiai kviečiai → miežiai), III – 29 proc. (daugiametės žolės → b
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33

Knott, Stuart Charles. "An analysis of the financial implications of different tillage systems within different crop rotations in the Swartland area of the Western Cape, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96855.

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Thesis (MScAgric)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: The pressure on the world’s natural resources is increased by an expanding global population. The majority of the growth is expected to take place in Africa and Asia. This creates the need for sustainable agricultural practices. To sustain food security, the limited natural resources must be utilised efficiently to optimise agricultural productivity. Conservation agriculture (CA) is one of the most holistic sustainable agricultural practices yet. It reduces environmental degradation, and concurrently it could enhance f
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34

Rembon, Fransiscus Suramas. "Impact of no-tillage versus conventional tillage, soybean-corn rotations, and fertilizer N rates on soil N levels and grain yields in two Eastern Canadian soils." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22794.

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Corn (Zea mays L.) production under monoculture and conventional-tillage management may cause soil degradation and nitrate (NO$ sb3 sp-)$ pollution. This study was conducted from 1991 to 1993 to evaluate the impact of conventional-tillage (CT) and no-tillage (NT) practices under corn-soybean (Glycine max L. Merill) rotations (C-S-C and S-C-S), continuous corn (C-C-C) and continuous soybean (S-S-S) systems on optimum N fertilization rates, yield and soil residual N levels. Field experiments were carried out on a Ste. Rosalie clay (Humic Gleysol) and an Ormstown silty clay loam (Humic Gleysol).
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35

Potter, Mark. "Biochemical studies of tissue glucosinolates for improvement of canola (Brassica napus) as a disease break within the southern Australian cereal rotation /." Title page, contents and summary only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09php8678.pdf.

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Thesis (Ph.D) -- University of Adelaide, Depts. of Plant Science and Crop Protection, 1998.<br>Thesis (Ph.D.)--University of Adelaide, Depts. of Plant Science and Crop Protection, 1999? Bibliographical references: leaves 112-125.
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36

Doole, Graeme John. "Value of perennial pasture phases in dryland agricultural systems of the eastern-central wheat belt of Western Australia." University of Western Australia. School of Agricultural and Resource Economics, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0213.

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Over the past thirty years, price relativities and technological development have motivated an increase in the area of land allocated to cropping, as opposed to pasture production, throughout the central wheat belt of Western Australia. Nevertheless, reducing the proportion of pasture in these rotations has challenged the future productivity of farming systems in this area. First, the frequent application of selective herbicides for weed control in extended cropping rotations has promoted the development of herbicide resistance in a number of major agricultural weeds. Second, the primary use o
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37

Barbieri, Pietro. "Can the availability of mineral nutrient be an obstacle to the development of organic agriculture at the global scale ?" Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0432.

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L’agriculture biologique (AB) est souvent présentée comme une alternative prometteuse à l’agriculture conventionnelle, permettant des systèmes alimentaires durables tout en minimisant les impacts environnementaux. La capacité de l’AB à satisfaire la demande alimentaire mondiale reste néanmoins fortement débattue. Plusieurs études ont conclu que l’AB pourrait satisfaire la demande alimentaire globale à condition de réduire simultanément la consommation de produits animaux et les gaspillages. Cependant, ces études n’ont pas pleinement pris en compte les changements d’assolement et de choix d’esp
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38

Galiano, Norma Graciela. "Soil nitrate and ammonia levels as affected by no-till and conventional tillage, monoculture corn and soybean, corn-soybean and corn- soybean-alfalfa rotations, and added N." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27319.

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Corn (Zea mays L.) production under monoculture and conventional tillage systems may land to soil degradation and nitrate (NO$ sb3 sp-$) pollution of surface and groundwater. This study evaluated the impact of no-till and conventional tillage, monoculture corn and soybean, corn-soybean rotations and corn-soybean-alfalfa rotations, and three fertilizer N rates applied to monoculture corn or soybean, and corn in rotation, on soil NO$ sb3$-N and NH$ sb4$-N levels. Experimental sites were a Ste-Rosalie clay (Humic Gleysol) and an Ormstown silty clay loam (Humic Gleysol). Results obtained from fall
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39

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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40

Castellazzi, M. S. "Spatio-temporal modelling of crop co-existence in European agricultural landscapes." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/3747.

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The environmental risk of growing genetically modified (GM) crops and particularly the spreading of GM genes to related non-GM crops is currently a concern in European agriculture. Because the risks of contamination are linked to the spatial and temporal arrangements of crops within the landscape, scenarios of crop arrangement are required to investigate the risks and potential coexistence measures. However, until recently, only manual methods were available to create scenarios. This thesis aims to provide a flexible referenced tool to create such scenarios. The model, called LandSFACTS, is a
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41

Shakoor, Arif. "Crop rotation planning using simulated annealing." Master's thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-02232010-020018/.

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42

Balnytė, Skirmantė. "Agroecosystem Optimization by Crop Rotation, Catch Crop and Manure in Organic Farming." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20110902_143932-39161.

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To analyse the influence of crop rotations with a different ratio of nitrogen-fixing crops, catch crops and fertilisation with organic fertilisers on the following: 1. Soil enzyme activity; 2. Agrochemical properties of the soil and nitrogen balance; 3. Weed response; 4. Weed seed bank in the soil; 5. Crop yield and productivity.<br>Agroekosistemų optimizavimo augalų kaita, tarpiniais pasėliais ir organinėmis trąšomis ekologinėje žemdirbystėje tyrimai vykdyti 2004–2009 m., Lietuvos žemės ūkio universiteto Bandymų stotyje, sertifikuotame ekologinės žemdirbystės lauke, karbonatingame sekliai glė
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43

Umeda, Kai, and B. Deeter. "Sandea Herbicide Rotational Crop Replant Study." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2003. http://hdl.handle.net/10150/214976.

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Broccoli and red table beets emerged and established a stand in Sandea treated plots at 0.5 or 1.0 oz product/A. Table beets planted into the beds treated with Sandea did not exhibit significantly different rates of emergence and stand establishment relative to the untreated check. The broccoli that emerged and established a stand did not show any significant differences or numerical trends between the untreated check and the two Sandea treatments during any of the observation dates. Spinach, the third indicator crop, did not emerge adequately in the test site.
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44

Alexander, Peter Mark William. "Modelling the UK perennial energy crop market." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9645.

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Biomass produced from perennial energy crops, Miscanthus and willow or poplar grown as short-rotation coppice, is expected to contribute to UK renewable energy targets and reduce the carbon intensity of energy production. The UK Government has had incentives in place, targeting farmers and power plant investors to develop this market, but growth has been slower than anticipated. Market expansion requires farmers to select to grow these crops, and the construction of facilities, such as biomass power plants, to consume them. Farmer behaviour and preferences, including risk-aversion, are believe
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Umeda, K., and B. Munda. "Evaluation of Summer Cover Crops for Rotations with Vegetable Crops." College of Agriculture, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/221500.

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Five different crops were evaluated in exploratory and observational field studies for potential use as a summer cover crop in a rotation with commonly grown vegetable and field crops. Sesbania ( Sesbania exaltata), cowpea (ViRna unguiculata), sunnhemp (Crotalaria iuncea var. Tropic Sun), sudangrass (Sorghum sudanense cv. Piper), and kenaf (Hibiscus cannabinus) were drill seeded and grown with 2-3 irrigations during the summer months in two field tests. In one test, fresh weight yields were: 7,794 lb/A for sesbania; 10,551 lb/A for sunnhemp; 5,184 lb/A for cowpea; 19,816 lb/A for sudangrass; a
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Atallah, Therese. "Studies on the effects of organic amendments on nutrient recycling and nitrogen supply in a biological approach to crop production." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364054.

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Humble, Shauna Marie. "Weeds and ground beetles (Coleoptera: Carabidae) as influenced by crop rotation type and crop input management." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62758.pdf.

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Herzog, Craig. "Canola Production as Influenced by Previous Crop and Tillage System." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1967998321&sid=7&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Seibutis, Vytautas. "Trumpų sėjomainos rotacijų agrobiologinis įvertinimas." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050929_115234-56584.

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Lithuania’s agricultural reform resulted in significant changes in land use, i.e. in the emergence of small individual farms. As a result, the formerly most popular 7, 8, 9-course crop rotations, or even 5-6-course crop rotations became inapplicable on small farms, especially on those not involved in animal production and cultivation of grass forage. Multiple-course crop rotations would disperse the same crops over several places, and the fields would not be unacceptably small. This is especially problematic for market farms, where it is intended to have 1-2-3 main crops and adequately alterna
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Mupambwa, Hupenyu Allan. "Winter rotational cover crops effects on soil strength, aggregate stability and water conservation of a hardsetting cambisol in Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/453.

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Winter rotational cover crops (WRCC) are often used to boost soil fertility and plant nutrition. However, selection and use of WRCC for soil physical improvement is usually overlooked. The objective of this study was to determine the effects of WRCC on soil strength, aggregate stability and water conservation of a hardsetting soil. The soil physical properties were determined after four rotations of growing monocultures of vetch (Vicia dasycarpa cv. Max), lupin (Lupinus angustifolius cv. Tanjil) and oats (Avena sativa cv. Sederberg) and after two rotations of growing bicultures of oats (Avena
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