Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Organic fertilizers"”.
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Benthic invertebrate management in plastic-lined fish culture ponds
… lining significantly reduces the amount of organic sediment typically found on the bottom of culture ponds there is also a limited amount of organic substrate available to potential benthic macroinvertebrates, which are important prey for larval fish. Previous studies on plastic-lined ponds …
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Estudio de prefactibilidad para la instalación de una planta productora de biol a partir del estiércol de cuy
… the generation of food, chemical inputs such as fertilizers, pesticides or insecticides are mainly used, which encourage the growth and protection of plants; however, they generate a negative impact on the environment and people's health. In 2018, in Peru, the use of chemical fertilizers …
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Abrasive grit application for integrated weed and nitrogen management in organic vegetable cropping systems
… soil control) were replicated four times in an organic pepper cropping system near Urbana, IL in 2015 and 2016. Soybean meal, turkey litter, and walnut shell grits, used in conjunction with plastic or bioplastic mulch, all decreased total dry biomass of weeds within the crop row by approximately …
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Uso eficiente de esterco bovino na cultura da mandioca em Planossolo Háplico
… production is required the incorporation of organic fertilizers, such as, manure. This study aimed to: quantify the levels of Ca, Mg, P and K in the soil, and the contents of N, P and K in shoot and root of the cassava plant; establish the optimal dose of manure to cassava and evaluate the …
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Tracking Antibiotic Resistance throughout Agroecosystems
… soil, and on vegetable surfaces. The addition of organic fertilizers increased antibiotic resistance presence compared to background levels. Further, metals and metal resistance were also measured in the amended soils and were found to be at greater levels in the inorganically fertilized soils …
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Cultivar, Season Extension, Fertilizer Trials of Swiss Chard and Pedagogy of Assessing Cultivars Using Technology
… also conducted to determine optimum, pre-plant organic fertilizer amendment for container production of Swiss chard. Ten pre-plant organic fertilizers were compared against a control (Osmocote). There were no significant differences in dry weight, plant height, or plant width among the …
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Modelling of environmental change impacts on water resources and hydrological extremes in Germany
… effect on the water environment. Mineral fertilizers have a much stronger effect on the NO3-N load than organic fertilizers. Cover crops, which play an important role in the reduction of nitrate losses from fields, should be maintained on cropland. The uncertainty in estimating future high …
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Mitigation strategies for nitrous oxide emissions based on fertilization management of irrigated crops in a mediterranean climate = Estrategias de mitigación de óxidos de nitrógeno basadas en el manejo de la fertilización en cultivos de regadío bajo clima mediterráneo
… were: type and composition of fertilizer (organic or mineral); added or residual organic C and irrigation system (drip or furrow irrigation). In order to achieve it, the experimental part of this work has been carried out in 4 phases, 2 field experiments (described in chapters 3 and 6) and …
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Three Essays on Nepalese Development: Technology Adoption, Agricultural Risk and the Effects of Remittances on Recipient Households
… affecting the adoption of improved seeds and in-organic fertilizers. I consider the adoptions of both these technologies as a joint decision and estimate over two repeated cross-section data from NLSSs. Both probit GMM with the moment restrictions and Linear Probability Models for period 2 (2004) …
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Incentivizing Sustainable Agriculture in Indonesia: Empirical Essays on the Role of Social Norms and Information Provision
… adoption of high-yield crop varieties, synthetic fertilizers and pesticides, and advanced irrigation systems. By significantly increasing agricultural productivity, the GR responded to global food shortages and hence played a crucial role in educing hunger, particularly in developing economies. …