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Dissertations / Theses on the topic 'Crop growth model'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Artus, Sally. "VEGIGRO: a crop growth teaching model." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484201.

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2

Ottman, Michael. "Predicting Wheat Growth Using the CSM-Cropsim-CERES - Wheat Crop Model." College of Agriculture, University of Arizona (Tucson, AZ), 2008. http://hdl.handle.net/10150/203650.

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CSM-Cropsim-CERES -Wheat is a crop growth model that predicts crop development stages, among other things, using genetic coefficients for vernalization and photoperiod. We used this model to predict flowering date for 12 durum varieties seeded in trials at Maricopa and Yuma from 1998 to 2006. The difference between simulated and measured flowering date averaged 4 days without genetic coefficients and improved to 3.5 days if genetic coefficients for flowering and vernalization were included for each variety.

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3

GABBRIELLI, MARA. "MEASURING AND MODELLING COVER CROP GROWTH AND AGRONOMIC EFFECTS." Doctoral thesis, Università degli Studi di Milano, 2022. https://hdl.handle.net/2434/949531.

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Cover crops are cultivated during the bare soil period between the harvest of a cash crop and the sowing of the next one. Their cultivation puts into effect the permanent soil organic cover principle of conservation agriculture and exerts several agro-ecological services, among which the most relevant are nitrate leaching reduction, weed growth control, soil organic matter increase, soil structure and water infiltration improvement. In temperate climates when crop rotations include summer cash crops (such as maize or soybean), autumn-winter cover crops are sown between late July and October an

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4

Nambuthiri, Susmitha Surendran. "Soil water and crop growth processes in a farmer's field." Lexington, Ky. : [University of Kentucky Libraries], 2010. http://hdl.handle.net/10225/1140.

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Thesis (Ph. D.)--University of Kentucky, 2010.<br>Title from document title page (viewed on May 12, 2010). Document formatted into pages; contains: xii, 310 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 298-309).

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5

Chew, Yin Hoon. "Multi-scale whole-plant model of Arabidopsis growth to flowering." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8008.

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In this study, theoretical and experimental approaches were combined, using Arabidopsis as the studied species. The multi-scale model incorporates the following, existing sub-models: a phenology model that can predict the flowering time of plants grown in the field, a gene circuit of the circadian clock network that regulates flowering through the photoperiod pathway, a process-based model describing carbon assimilation and resource partitioning, and a functional-structural module that determines shoot structure for light interception and root growth. First, the phenology model was examined on

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6

Clouse, Randy Wayne. "Spatial application of a cotton growth model for analysis of site-specific irrigation in the Texas High Plains." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5887.

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Limited water supplies for agriculture in the Texas High Plains will require new irrigation technologies and techniques for agriculture to continue in this area. The potential for using one such technology, site-specific irrigation, was evaluated using the Cotton2k crop simulation model. This model and two other simulation models were evaluated for their ability to track water movement and usage over three growing seasons. The models were tested for sites in Lubbock and Hale County, Texas. Cotton2k performed well compared to the other two models on tests of cumulative evapotranspiration and ap

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7

Thorp, Kelly R., Douglas J. Hunsaker, Kevin F. Bronson, Pedro Andrade-Sanchez, and Edward M. Barnes. "Cotton Irrigation Scheduling Using a Crop Growth Model and FAO-56 Methods: Field and Simulation Studies." AMER SOC AGRICULTURAL & BIOLOGICAL ENGINEERS, 2017. http://hdl.handle.net/10150/626603.

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Crop growth simulation models can address a variety of agricultural problems, but their use to directly assist in-season irrigation management decisions is less common. Confidence in model reliability can be increased if models are shown to provide improved in-season management recommendations, which are explicitly tested in the field. The objective of this study was to compare the CSM-CROPGRO-Cotton model (with recently updated ET routines) to a well-tested FAO-56 irrigation scheduling spreadsheet by (1) using both tools to schedule cotton irrigation during 2014 and 2015 in central Arizona an

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8

Angenendt, Alexandra. "Ecophysiological studies of field beans : a simple yet mechanistic crop growth model for Vicia faba L." Thesis, University of Reading, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250720.

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9

Koller, Michal. "Neural network based crop growth model to predict processing tomato yield on a site-specific basis using remotely sensed data /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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10

Kang, Fenni. "Modèles de croissance de plantes et méthodologies adaptées à leur paramétrisation pour l'analyse des phénotypes." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2013. http://www.theses.fr/2013ECAP0035/document.

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Les modèles de croissance de plantes cherchent à décrire la croissance de la plante en interaction avec son environnement. Idéalement, les paramètres du modèle ainsi défini doivent être stables pour une large gamme de conditions environnementales, et caractéristiques d'un génotype donné. Ils offrent ainsi des nouveaux outils d'analyse des interactions génotype X environnement et permettent d'envisager de nouvelles voies dans le processus d'amélioration génétique chez les semenciers. Malgré tout, la construction de ces modèles et leur paramétrisation restent un challenge, en particulier à cause

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11

Adaramola, Rhoda Fiyinfoluwa. "Relationship between Aspalathus linearis (Burm. F.) R. Dahlgren (rooibos) growth and soil moisture in a glasshouse and in the DSSAT-CSM crop model." Master's thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33623.

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Climate change and drought pose a major threat to agriculture and water resources globally and for rooibos (Aspalathus linearis (Burm. F.) R. Dahlgren) production in the Western Cape province of South Africa. Rooibos is adapted to the coarse, nutrient poor, acidic, well-drained, deep sandy soil of the Fynbos biome. The region has a Mediterranean climate, which is characterised by wet cold winters, with an average annual rainfall of about 375 mm, and dry summers. The growth of rooibos peaks in the summer months, implying a reliance on soil moisture. The current study aims to investigate the rel

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12

Bonnecarrère, Reinaldo Antonio Garcia. "Adaptação do método da zona agroecológica para simulação estocástica da produtividade da cultura de milho no Estado do Rio Grande do Sul." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-17042007-162559/.

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Com os objetivos de (i) elaborar uma adaptação do método da zona agroecológica, proposto por De Wit, para estimar a produtividade potencial e deplecionada da cultura de milho, utilizando procedimento estocástico, no Rio Grande do Sul; e de (ii) testar procedimentos estocásticos (distribuição normal truncada, triangular assimétrica e triangular simétrica) para simular dados de temperatura e de insolação para estimar produtividade potencial e deplecionada da cultura de milho, foi desenvolvida uma metodologia computacional. A quantidade de energia solar disponível às plantas (em função da latitud

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13

Martin, Thomas Newton. "Modelo estocástico para estimação da produtividade de soja no Estado de São Paulo utilizando simulação normal bivariada." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-20032007-161308/.

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A disponibilidade de recursos, tanto de ordem financeira quanto de mão-de-obra, é escassa. Sendo assim, deve-se incentivar o planejamento regional que minimize a utilização de recursos. A previsão de safra por intermédio de técnicas de modelagem deve ser realizada anteriormente com base nas características regionais, indicando assim as diretrizes básicas da pesquisa, bem como o planejamento regional. Dessa forma, os objetivos deste trabalho são: (i) caracterizar as variáveis do clima por intermédio de diferentes distribuições de probabilidade; (ii) verificar a homogeneidade espacial e temporal

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14

Lorenz, Karsten. "Nutzung der räumlichen Variabilität von ausgewählten Standorteigenschaften für die ortsspezifische N-Düngung." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2005. http://dx.doi.org/10.18452/15212.

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Für die ortsspezifische Düngung spielt die räumliche Erfassung von ertragsrelevanten Standorteigenschaften (z.B. Textur und Nährstoffnachlieferungsvermögen) eine große Rolle bei der Bemessung der Düngungsempfehlung. Durch die Berücksichtigung der schlaginternen Variabilität ist eine abgestufte standortangepasste Bewirtschaftung möglich. Auf fünf ackerbaulich genutzten Schlägen in verschiedenen Bodenregionen Deutschlands wurden räumliche und zeitliche Untersuchungen zur vertikalen und horizontalen Mineralstickstoffverteilung in Rasterform durchgeführt. Mit Hilfe des N-Modells HERMES wurden Sim

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15

Karimi-Zindashty, Yousef. "Application of hyperspectral remote sensing in stress detection and crop growth modeling in corn fields." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85560.

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This study used hyperspectral data to determine nitrogen, weed, and water stresses in a corn (Zea mays L.) field in southwestern Quebec, and incorporated these data in crop growth models for better crop growth simulation under stressful conditions.<br>In 2000, aerial hyperspectral images (72 wavebands, ranging from 407 to 949 nm) were acquired, and analyzed using a stepwise approach to identify wavebands useful in detecting weed and nitrogen stresses. Discriminant analysis (DA) was used to classify different weed and nitrogen treatments and their combinations. This analysis showed great

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16

Maende, Cleophas Makokha. "An application of a model of maize growth to maize production by smallholders in Kenya." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240744.

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17

Mavromatis, Theodoros. "Impact of different methods of climate change scenario construction on the yield distributions of winter wheat using crop growth simulation models." Thesis, University of East Anglia, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361486.

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18

Webb, Cerian Ruth. "Dynamical models for the growth of the sugar beet crop and the temporal build-up of the fungal parasite Polymyxa betae." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624818.

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19

Gaiewski, Vicente. "Parametrização do modelo LINTUL para estimar a produtividade potencial da cultura de milho." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-10112009-152845/.

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Com o objetivo de parametrizar o modelo LINTUL (Light Interception and Utilization - Interceptação e Utilização da Luz) foi conduzido um experimento de campo, na safra 2003/2004, em Piracicaba-SP, na área experimental do Departamento de Produção Vegetal (Esalq) da Universidade de São Paulo, utilizando o procedimento de análise de crescimento. Ao longo do ciclo da cultura, foram efetuadas 24 amostragens, com 4 repetições, para determinação da massa de matéria seca de raiz, colmo, folha e órgão reprodutivo. Em função dos resultados obtidos referentes à parametrização do modelo LINTUL com base na

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20

Correa, Simone Toni Ruiz. "Simulação estocástica de elementos do clima para estimação da produtividade de cana planta." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-02042013-111835/.

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Os modelos de simulação devem ser ajustados para que os valores dos parâmetros e variáveis de entrada forneçam resultados que melhor representem os valores observados. Assim, face às imprecisões a que estão sujeitos os resultados obtidos a partir do ajuste, há a necessidade de implementar métodos que permitam a avaliação das incertezas, quer seja nos parâmetros de cultura ou nas variáveis de entrada do modelo. Tem-se, para a cana-de-açúcar, que a máxima produtividade de açúcar ocorre no momento em que a Pol e a biomassa de colmos (TCH) são potencializados. Sendo assim, este trabalho objetivou:

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21

Rodrigues, Paulo Jorge Canas. "New strategies to detect and understand genotype-by-environment interactions and QTL-by-environment interactions." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/7848.

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Dissertação para obtenção do Grau de Doutor em Estatística e Gestão do Risco, especialidade em Estatística<br>Genotype-by-environment interaction (GEI) is frequent in multi-environment trials, and represents differential responses of genotypes across environments. With the development of molecular markers and mapping techniques, researchers can go one step further and analyse the whole genome to detect specific locations of genes which influence a quantitative trait such as yield. These locations are called quantitative trait locus (QTL), and when these QTLs have different expression across

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22

Chnib, Echrak. "Study and Development of an Adaptive Vertical Farm." Electronic Thesis or Diss., Université de Lorraine, 2025. http://www.theses.fr/2025LORR0016.

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La population mondiale devrait atteindre près de 10 milliards d'ici 2050, entraînant une hausse attendue de la demande alimentaire due à la croissance démographique, au développement économique et à l'urbanisation. Pour répondre à cette demande de manière durable, les systèmes de cultures en serre, notamment l'agriculture verticale, se sont imposés comme une solution prometteuse, offrant des rendements élevés par unité de surface cultivée. La Serre Verticale Adaptative (SVA) est une serre verticale industrielle innovante qui ajuste dynamiquement la distance entre ses étagères empilées, optimis

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23

Harena, Tchamse. "Essai de validation et perspectives d'application en agrometeorologie d'un modele de simulation de la croissance et du developpement du mais : ceres-maize." Clermont-Ferrand 2, 1988. http://www.theses.fr/1988CLF2D214.

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Apres une description du modele couple de simulation du bilan hydrique, du developpement et de la croissance, les valeurs simulees sont comparees aux donnees recueillies lors de quatre annees d'experimentation dans le puy-de-dome sur deux varietes de mais (dea et boree). On a constate que du point de vue phenologique le modele presente un retard de precocite et que les valeurs de croissance sont sous estimees. On etudie la sensibilite du modele aux parametres genetiques d'entree et a deux coefficients numeriques (phyllochrone et plastochrone), puis a la variation de l'etat hydrique du sol et a

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24

Wittebolle, Guy. "Influence des basses temperatures racinaires sur la croissance, le regime hydrique et la repartition des assimilats chez le dactyle (dactylis glomerata l. )." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13028.

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Analyse des consequences du refroidissement des racines sur la croissance et le developpement du dactyle en phase vegetative permettant l'etude du fonctionnement de la plante entiere en rapport avec la contrainte hydrique et la nutrition minerale

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25

Alambert, Marcelo Rodrigues. "Estimação estocástica de parâmetros produtivos da soja uso do modelo PPDSO em um estudo de caso em Piracicaba/SP." reponame:Repositório Institucional do FGV, 2010. http://hdl.handle.net/10438/8272.

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Submitted by Roberta Lorenzon (roberta.lorenzon@fgv.br) on 2011-06-01T14:19:41Z No. of bitstreams: 2 65080100022.pdf: 2118563 bytes, checksum: e772406b416ab303d53d7648ac10d40b (MD5) 65080100022.pdf: 2118563 bytes, checksum: e772406b416ab303d53d7648ac10d40b (MD5)<br>Approved for entry into archive by Suzinei Teles Garcia Garcia(suzinei.garcia@fgv.br) on 2011-06-01T14:54:51Z (GMT) No. of bitstreams: 2 65080100022.pdf: 2118563 bytes, checksum: e772406b416ab303d53d7648ac10d40b (MD5) 65080100022.pdf: 2118563 bytes, checksum: e772406b416ab303d53d7648ac10d40b (MD5)<br>Approved for entry into arc

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Corrêa, Rodrigo Alessandro de Lima. "Evapotranspiração e coeficiente de cultura em dois ciclos de produção do maracujazeiro amarelo." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-30082004-163336/.

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Este trabalho teve como objetivo determinar a evapotranspiração da cultura (ETc) e o coeficiente de cultivo (Kc) do maracujazeiro amarelo (Passiflora edulis Sims f. flavicarpa Deg), durante 637 dias após o transplantio (DAT) das mudas. O experimento foi desenvolvido na área experimental da Fazenda Areão pertencente à ESALQ/USP, em Piracicaba, SP. A determinação da ETc foi realizada em 4 lisímetros de drenagem, instalados no centro de uma área de 0,4 ha cultivada com maracujazeiro amarelo, no espaçamento de 3,5 m x 4,0 m, desde 21/05/99 (17 DAT). A determinação do Kc foi realizada a partir da e

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27

Jordan, Marie-Odile. "Mise en place du systeme racinaire du mais : definition et caracterisation au champ et en conditions controlees des parametres descriptifs du systeme racinaire, construction de l'organigramme d'un modele cinetique." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13329.

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Une analyse bibliographique montre que si l'architecture des parties aeriennes est bien connue chez le mais, il n'en est pas de meme du systeme racinaire. Nous avons donc entrepris un travail de synthese a ce sujet. Dans la premiere partie de cette etude, les parametres descriptifs de la structure racinaire sont definis. Leur evolution au cours du cycle est ensuite caracterisee en conditions habituelles de culture, et, en rhizotrons. Quatre categories de racines primaires ont pu etre mises en evidence

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28

Almeida, Paulo Nazareno Alves. "Fontes de crescimento e sistema produtivo da orizicultura no Mato Grosso." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11132/tde-24052004-142414/.

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O presente trabalho tem como objetivo descrever o sistema produtivo e quantificar as fontes de crescimento da orizicultura no Mato Grosso, em competição com a cotonicultura, a milhocultura e a sojicultura, no período de 1980 a 2001. Nota-se grandes avanços tecnológicos empregados na cultura do arroz sob o sistema terras altas, diminuindo a diferença produtiva entre este e o arroz irrigado. Diante destas alterações e da carência de informações no tocante ao cultivo de terras altas, são necessários estudos que demonstrem essas alterações de forma sistematizada. Utilizou-se a metodologia

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29

Chen, Chi-Lieh, and 陳啟烈. "Applications of the crop growth model EPIC (Erosion-Productivity Impact Calculator) in predicting crop yields under crop rotation schemes in Taiwan." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/75585901566663762438.

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博士<br>國立臺灣大學<br>農業化學系<br>85<br>Because of the changes in grain consumption of the public and the impact due to the possibility of import of agricultural product, traditional agriculture must transform in order to survive. Promotion of paddy rice-upland field crop rotation schemes is a necessary state of craft in the present agricultural management. However, how to design the rotation sequence and growth timing, etc. in order to obtain the optimal combination, generally requires not only

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Chen, Qi-Lie, and 陳啟烈. "Applications of the crop growth model EPIC (Erosion-Productivity Impact Calculator) in predicting crop yields under crop rotation schemes in Taiwan." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/53382524170463898317.

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31

Šťastná, Milada. "Parametrization, Validation and Utilization of the Crop Growth :Ceres-Maize Model /." Doctoral thesis, 1998. http://www.nusl.cz/ntk/nusl-94948.

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Leolini, Luisa. "A model library for estimating grapevine development and growth under different pedo-climatic conditions." Doctoral thesis, 2018. http://hdl.handle.net/2158/1119983.

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Grapevine (Vitis vinifera L.) is a valuable fruit crop characterized by a worldwide importance. In particular, Italy, France and Spain are the biggest wine-producing countries and they play a relevant role in the world wine economy. However, the specific climate conditions of the narrow geographical areas in which grapevine is currently cultivated expose the viticulture suitability to the great risk of the climate change and extreme events. In this context, the grapevine simulation models represented useful tools for investigating the main physiological plant processes under different p

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Bishop, A(Andrew). "Towards a crop growth, development, and yield model for Lupinus angustifolius L. (narrow leafed lupin) in Tasmania." Thesis, 1994. https://eprints.utas.edu.au/18860/1/whole_BishopAndrew1995_thesis.pdf.

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Experiments were conducted between 1988 and 1990 at Elliott, Cressy, and Ross in Tasmania using three cultivars (Yandee, Geebung, and 75A329) of narrow-leafed lupin (Lupinus angustifolius). The purpose of these experiments was to examine narrow-leafed lupin growth and development in Tasmania in relation to specific environmental factors. These factors were related to growth and development measurements. It was hoped to use these relationships in a simple crop model suitable for assessing sites for the commercial production of lupins. Preliminary experiments in 1988 examined the lupin

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34

Hou, Jiexi. "Investigating molecular regulation of transfer cell development in the model flowering plant Arabidopsis thaliana." Thesis, 2018. http://hdl.handle.net/1959.13/1387566.

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Research Doctorate - Doctor of Philosophy (PhD)<br>Transfer cells (TCs) <i>trans</i>-differentiate from differentiated plant cells by developing highly invaginated wall ingrowths that protrude into the cytoplasm of the cell, thus greatly amplifying plasma membrane surface area. The enlarged plasma membrane surface area consequently enables increased densities of nutrient transporters which facilitate enhanced rates of transport at apoplasmic/symplasmic junctions in plant nutrient transport pathways. Significantly, these processes are primary determinants of plant growth and productivity, and t

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35

Heinzel, Vanessa [Verfasser]. "Retrieval of biophysical parameters from multi-sensoral remote sensing data, assimilated into the crop growth model CERES-Wheat / vorgelegt von Vanessa Heinzel." 2008. http://d-nb.info/1000208192/34.

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Lenz, Victoria IIse Shamim [Verfasser]. "A process based crop growth model for assessing Global Change effects on biomass production and water demand : a component of the integrative Global Change decision support system DANUBIA / vorgelegt von Victoria IIse Shamim Lenz." 2007. http://d-nb.info/986419168/34.

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37

"Modeling the factors affecting cereal crop yields in the Amhara National Regional State of Ethiopia." Thesis, 2010. http://hdl.handle.net/10413/3314.

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The agriculture sector in Amhara National Regional State is characterised by producing cereal crops which occupy the largest percentage (84.3%) of the total crop area cultivated in the region. As a result, it is imperative to investigate which factors influence the yields of cereal crops particularly in relation to the five major types of cereals in the study region namely barley, maize, sorghum, teff and wheat. Therefore, in this thesis, using data collected by the Central Statistical Agency of Ethiopia, various statistical methods such as multiple regression analysis were applied to investig

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38

Juarez, Torres Miriam 77. "Copula Based Stochastic Weather Generator as an Application for Crop Growth Models and Crop Insurance." Thesis, 2012. http://hdl.handle.net/1969.1/148096.

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Stochastic Weather Generators (SWG) try to reproduce the stochastic patterns of climatological variables characterized by high dimensionality, non-normal probability density functions and non-linear dependence relationships. However, conventional SWGs usually typify weather variables with unjustified probability distributions assuming linear dependence between variables. This research proposes an alternative SWG that introduces the advantages of the Copula modeling into the reproduction of stochastic weather patterns. The Copula based SWG introduces more flexibility allowing researcher to mode

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