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Dissertations / Theses on the topic 'Fertilizer factor'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

David, Jean Lynette. "Agrochemical abuse : reasons for pesticide and fertiliser overuse among arable farmers of Guyana." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/agrochemical-abuse-reasons-for-pesticide-and-fertiliser-overuse-among-arable-farmers-of-guyana(47a7139f-2c35-42f4-9472-9aee206481e9).html.

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The overuse of agrochemicals by arable crop farmers in Guyana is of increasing concern. But the literature reveals a paucity of information concerning the reasons for farmers‟ persistence of this inappropriate practice. No previous study has been conducted using a structured format to reveal the scope or reasons for farmers‟ sustained overuse of these chemicals. This research adopted an original structured-type approach, suitable for unearthing and explaining the reasons for this phenomenon. The study was theoretically and analytically guided by the theory of practices and critical realist the

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2

Ferrão, Gregori da Encarnação. "Emissões de N2O pela parte aérea de plantas de milho (Zea mays L.)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-17042014-105928/.

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O óxido nitroso (N2O) é um gás traço, considerado um dos principais causadores do aquecimento global. Em solos agrícolas, a aplicação de fertilizantes nitrogenados, necessários às culturas, é a principal responsável pela formação deste gás. Internacionalmente, a metodologia mais utilizada e aceita para quantificar os fluxos totais de uma área baseia-se na alteração de concentração no interior de câmeras estáticas instaladas sobre o solo. Entretanto, diversos trabalhos sugerem que as plantas também são agentes desta dinâmica de fluxos entre o solo e a atmosfera, um fator não contabilizado na qu

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3

Salin-Maradeix, Maxime. "Factors affecting fertilizer use: the evidence from northern Ghana." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/20401.

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Master of Science<br>Agricultural Economics<br>Vincent R. Amanor-Boadu<br>Ghana is the first Sub-Saharan African country to meet the Millennium Development Goals (MDG) of halving extreme poverty by 2015 and has made great improvement in four of the total eight MDG. Supporting by several aid programs, Ghana is right in the middle of an economic boom through agriculture with the stock exchange listing of the Ghanaian Agricultural Development Bank the 3rd of July 2015. However, many Ghanaian producers, specifically in the northern part, cannot take full advantage of this “boom” as they are dealin

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4

Russell, Elizabeth F. (Elizabeth Fiona). "Influence of ammonium lignosulfonate fertilizer mixtures on corn (Zea mays L.) growth and nutrient composition." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61168.

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Fertilizer P fixation and fertilizer N losses in soils may be reduced through additions of polyphenolic compounds. The influence of ammonium lignosulfonate (NH$ sb4 sp+$-LS) on triple superphosphate (TSP) efficiency was investigated in a soil incubation study using three Quebec soils and in a growth bench study using one soil. For the incubation study, soils were analyzed for pH and P extractability, as a function of NH$ sb4 sp+$-LS rate and time. In the growth bench study, TSP and NH$ sb4 sp+$-LS were applied at varying rates and corn (Zea mays L.) dry matter yields and nutrient compositions

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5

Pugh, Ruth. "Moisture as a factor influencing productivity and aspects of nitrogen supply in grassland soils." Thesis, Aberystwyth University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366767.

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6

Massicotte, Luc. "Assessment of the agricultural value of sugar refinery by-products." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23410.

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The sugar refinery process used by Lantic Sugar Ltd generates three by-products having characteristics that give them potential as soil amendments or fertilizers, particularly as a phosphorous and calcium source. Laboratory and a field trials were conducted in order to examine the changes in agronomic properties of soil produced by the application of these residues.<br>During the laboratory experiment, the by-products examined were spend bone char (SBC), filter-press mud (FPM), clarification scum (SCU) and a compost (COM) produced using FPM and SCU, where as in a field experiment, COM, SBC and

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7

Cushnahan, Aidan. "An examination of some factors which may influence the production potential of grazed and conserved forages by ruminants." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359061.

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8

Lewis, D. James. "Foliar-applied phosphate on potatoes (Solanum tuberosum L.) : factors affecting uptake by the leaves and the effects on growth and yield." Thesis, Open University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320528.

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9

Islam, Md Rafiqul. "Evaluation of oat straw for ruminants : effects of genotype, climate and agronomic factors on nutritive value and prediction of nutritive value." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363812.

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10

Elorong, E. E. M. "Factors affecting the response of perennial ryegrass (Lolium perenne L.) white clover (Trifolium repens L.) swards to fertilizer nitrogen." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332507.

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11

Seng, Vang. "Edaphic factors limiting rice responses to applied inorganic fertilisers in rainfed lowland soils in southeast Cambodia." Thesis, Seng, Vang (2000) Edaphic factors limiting rice responses to applied inorganic fertilisers in rainfed lowland soils in southeast Cambodia. PhD thesis, Murdoch University, 2000. https://researchrepository.murdoch.edu.au/id/eprint/52666/.

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Soil-water interactions with nutrients are central to understanding constraints to rice production in the rainfed lowlands. Proper identification of the nature of these constraints may lead to increasing farm productivity through the identification and use of effective soil amendments and an appropriate application of fertilisers. This thesis has made a significant contribution to the understanding of soil water x phosphorus interactions in the rainfed lowland rice ecosystems, by a series of experiments on two rainfed lowland soils of southeast Cambodia. The most common physical and chemic

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12

Erefur, Charlotta. "Regeneration under shelterwood : control of environmental factors /." Umeå : Dept. of Silviculture, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/10320021.pdf.

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13

Pandeya, Hemant Raj. "Carbon and nitrogen flux dynamics in highly weathered tropical mango soils: Effect of leaf litter and nitrogen fertiliser." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/232828/1/Hemant%20Raj_Pandeya_Thesis.pdf.

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This thesis is a comparative study of carbon and nitrogen flux dynamics following sole and combined application of mango leaf litter mulch and inorganic fertiliser in highly weathered tropical mango orchard soils. In doing so, the thesis investigated litter decomposition dynamics and litter carbon mass balance and provided baseline datasets of seasonal and annual reactive nitrogen losses (through hydrological and gaseous pathways) under the tropical environmental conditions of Northern Territory Australia.

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14

Scudamore, Cheryl Lynn. "Studies in superovulated ewes of factors influencing the yield of fertilised ova and their capacity for development." Thesis, University of Aberdeen, 1991. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU033939.

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Border Leicester x Scottish Blackface ewes were used in a series of experiments to investigate factors affecting the number of transferable ova produced in response to superovulation with follicle stimulating hormone or pregnant mare serum gonadotrophin. The effect of the method of oestrous synchronisation on ova production was studied and it was suggested that during the progesterone priming period the application of progestagens via intravaginal pessaries resulted in a higher ovulation rate than pure progesterone. There was also evidence that ewes primed with 40 as opposed to 30mg fluorogest

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15

Winger, Quinton A. "Expression of insulin-like growth factors (IGF) and their binding proteins (BP) in fertilized and parthenogenetic bovine embryos, regulators of early development." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq21055.pdf.

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16

Delin, Sofia. "Site-specific nitrogen fertilization demand in relation to plant available soil nitrogen and water : potential for prediction based on soil characteristics /." Skara : Department of Soil Sciences, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200506.pdf.

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17

Brau-Nogué, Catherine. "Dynamique des pelouses d'alpages laitiers des Alpes du Nord externes." Université Joseph Fourier (Grenoble ; 1971-2015), 1996. http://www.theses.fr/1996GRE10004.

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Les alpages laitiers des alpes du nord externes (france) representent un type de systeme ecologique original refletant les effets des pratiques d'eleveurs (fertilisation, paturage) combines aux contraintes du milieu montagnard (etage subalpin). Face aux mutations recentes des modes d'exploitation des alpages, des recherches ont ete engagees pour comprendre et prevoir l'impact des pratiques pastorales sur la dynamique de ces pelouses d'altitude. Nous proposons un modele d'evolution de la composition botanique qui integre l'effet des facteurs anthropiques et celui des facteurs edaphiques. Ce mod

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18

Chopart, Jean-Louis. "Relations entre état physique du sol, systèmes racinaires et fonctionnement hydrique du peuplement végétal : outils d'analyse in situ et exemples d'études en milieu tropical à risque climatique élevé." Grenoble 1, 1999. http://www.theses.fr/1999GRE10163.

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L'etude, fondee sur des travaux au senegal, en cote d'ivoire et au burkina-faso, interesse les cultures annuelles de la zone tropicale ouest-africaine soumise a un risque eleve de deficit hydrique. On y met en evidence une grande variabilite du rendement et de l'effet des modes de gestion du sol rendant difficile le choix de nouveaux systemes de culture. Dans cette region, il faut pourtant promouvoir des innovations conduisant a une production durable, plus elevee et plus stable. Pour comprendre et spatialiser l'interet des modes de gestion du sol, il faut caracteriser des variables intermedia

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19

Craven, John. "Assessing antecedents of customer engagement for a South African fertilizer company / John Craven." Thesis, 2013. http://hdl.handle.net/10394/10676.

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The postmodern ultra-competitive global marketplace makes it difficult for companies to hold on to customers. This is especially true for industries that are driven by commodity products, and the South African fertilizer industry is not excluded from this statement. It is therefore important that companies not only operate to create loyal customers, but also increase and maintain a high level of engagement with their customers. This study measures customer engagement for a South African fertilizer company. In doing so, the study makes use, firstly, of a proposed customer engagement model, seco

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20

Sharma, Seema. "Study of total factor productivity in Indian fertiliser industry." Thesis, 2003. http://localhost:8080/xmlui/handle/12345678/5788.

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21

Nyaki, Adolf S. K. "Factors affecting the utilization of zinc from zinc fertilizer bands by wheat." 1990. http://hdl.handle.net/1993/17184.

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22

Jen, Hu Chung, and 胡忠仁. "A Study on the Factors Affecting Capital Structure of Taiwan Fertilizer Company." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/89858290584417258584.

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碩士<br>東吳大學<br>企業管理學系<br>103<br>This subject of this study is Taiwan Fertilizer Company-the fertilizer industry leader in Taiwan. We hope it can be a reference for Taiwan Fertilizer Company and offer us a further understanding of the capital structure of the fertilizer industry in Taiwan. Fertilizer industry is a highly capital-intensive industry, so how to determine an appropriate capital structure is one of the most important issues for the management. In this study, capital structure theory and practical experience serving the financial unit of Taiwan Fertilizer Company in Taiwan Fertilizer

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23

Madhav, Ashok Kumar. "An analysis of the factors affecting the structure of fertilizer marketing- A study in Mysore district." Thesis, 1997. http://hdl.handle.net/2009/1580.

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24

Kuo, Wan-Jou, and 郭婉柔. "Effect of environmental factors, substrates and fertilizers on growth and flowering of nobile type Dendrobium." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/14746612342752777314.

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碩士<br>國立屏東科技大學<br>農園生產系所<br>100<br>Dendrobium Lucky Girl and Dendrobium Snowflake'Red Star'were used to study the effect of different environmental factors and fertilizer management on vegetative growth and flowering. Compared with 35/25 and 30/20℃, day/night temperature at 30/16℃is more suitable for vegetative growth (including pseudobulb height、diameter、node number and root system) and flowering for D. Lucky Girl. High temperature (35/25℃) will prevent the ability of flowering. The result suggests that nobile-type Dendrobium is suitable for cultivation in the warm place in daytime and have

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25

"Making a Little Go a Long Way: The Socio-economic Factors Influencing the Adoption of Fertilizer Microdosing in Northwest Benin." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-02-1974.

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Soil degradation and low crop productivity negatively affect the food security of smallholder farmers in West Africa. Various agricultural techniques have been developed as components of food security interventions, but their effectiveness in addressing food insecurity in part depends upon farmers’ willingness to adopt these techniques. Likewise, adoption depends upon the effectiveness of these techniques in fulfilling farmers’ objectives. The institutional and biophysical environments mediate not only the effectiveness of the techniques, but also how farmers value a technique. This study exa

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26

Dauda, Idris Oladimeji. "Phytoremediation potential of sweet sorghum in mercury-contaminated soil." Diss., 2020. http://hdl.handle.net/10500/27740.

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The continuity of the menace of mercury (Hg) is due to the continuous production and use of Hg and Hg containing products. Toxicity is just an outfall of use and exposure. Anthropogenic activities such as coal combustion and artisanal and small-scale gold mining have led to increasing Hg contamination and is the major source of Hg pollution into the environment that needs to be remediated. This study aimed to assess the phytoextraction capability of sweet sorghum (Sorghum bicolor) under different fertiliser treatments in Hg-contaminated soil. The potted experiment in a controlled environment i

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27

(11720011), Hong Tham Dong. "Understanding agronomic factors that affect the initiation and development of sweetpotato (Ipomoea batatas (L.) Lam.) storage roots: The role of nitrogen fertilisation and organic soil amendments." Thesis, 2021. https://figshare.com/articles/thesis/Understanding_agronomic_factors_that_affect_the_initiation_and_development_of_sweetpotato_Ipomoea_batatas_L_Lam_storage_roots_The_role_of_nitrogen_fertilisation_and_organic_soil_amendments/17035877.

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Sweetpotato (Ipomoea batatas (L.) Lam.) is a major root crop that is widely grown throughout the world. In Australia, sweetpotato is one of the few very profitable and rapidly expanding vegetable crops. The sweetpotato industry is experiencing remarkable growth, with rapid growth in recent decades. However, storage root (SR) size and shape are important for consumer acceptance in developed countries, including Australia, where SRs with an excessively large or small size are rated as low quality with low commercial value. This determines the marketable yield and profit of growers. Agronomical f

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