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 16 of 16 for “"Perennial crop"”.
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Hydrologic and water quality impacts from perennial crop production on marginal lands
… or may not be suitable for intensive row-crop food/feed production. However, meeting biofeedstock production goals will require large amount of marginal lands and the unintended consequences of producing biofeedstocks on marginal lands are not fully clear. The overall goal of this study …
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Three essays on the idiosyncrasies of a perennial crop : the case of the US almond market
… framework that captures supply idiosyncrasies of perennial crops is developed to estimate the excess demand elasticity for US almonds. Global supply, demand and price transmission elasticities are estimated and excess demand elasticities computed. The 2003-2013 mean export demand elasticity for US …
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Economic analysis of coffee supply in Kenya
… supply response model is not appropriate for a perennial crop such as coffee. The results of the estimated function are used to estimate the changes in producer surplus of the coffee farmers in Kenya. Separate estimates are obtained for estate producers and smallholders because of the …
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U.S. apple market response to change in pesticide regulations
… the time it takes supplies to respond for a perennial crop. Four scenarios are used to consider potential effects if this chemical is no longer permitted in the United States, including possible increases in production costs, reduced yields and restricted imports. Results are compared with …
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Crop Canopy Effects on Kochia Establishment in Crop Fields
… address the issue of resistant kochia in crop fields, we carried out studies to understand the biology of kochia in different crop environments. The goal of this study was to quantify the effect of crop canopies, tillage and residue on kochia germination, survival and seed production in …
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Green grass: developing grass for sustainable gaseous biofuel
… and temperate northern Europe. It is a low input perennial crop; farmers are well versed in its production and storage (ensiling). Anaerobic digestion is a well understood technology. Grass is a lignocellulosic feedstock which is fibrous; it can readily cause difficulties with moving parts …
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Understanding the Delicate Balance between Microbial Pathogens and Insect Pests and Optimising Protection in Actinidia chinensis
… (Actinidia species) is a major horticultural crop. Actinidia chinensis var. chinensis ‘Hort16A’ is challenged by various biotic stressors with different lifestyles, including the hemi-biotrophic bacterial pathogen Pseudomonas syringae pv. actinidiae (psa) and the necrotrophic fungal pathogen …
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Identifying targets for multifunctional perennial cropping systems implementation through a landowner adoption preferences survey and a spatial suitability analysis
… security goals drives production of modern row-crop agriculture to areas of marginal land. Intensive management of marginal cropland accelerates instances of soil erosion and nutrient leaching. Multifunctional land use strategies are needed to mitigate environmental impacts and as well as …
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Soil microbial community dynamics associated with agricultural crops
… the interactions that occur between agricultural crops and microbial communities that reside in the soil. Soil microbes regulate the decomposition of organic matter, the cycling of nutrients to crops and can induce systemic resistance. They also drive global biogeochemical cycles that influence …
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Technical and allocative efficiency in Malaysian rubber smallholdings : a production function approach
… which farmers have to make decisions. In the perennial crop case these have to be divided between decisions of a recurrent and an investment nature. Management and sociological factors are studied and an attempt is ma'de to relate these to rubber yields. Chapter 6 contains most of the …
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Technical and allocative efficiency in Malaysian rubber smallholdings : a production function approach
… which farmers have to make decisions. In the perennial crop case these have to be divided between decisions of a recurrent and an investment nature. Management and sociological factors are studied and an attempt is ma'de to relate these to rubber yields. Chapter 6 contains most of the …
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Essays in Environmental and Supply Chain Topics in Finance
… of July 2021, a shock that affected coffee, a perennial crop whose plants are a major component of farm value. The frost shock reduced both output and the pledgeable value of farmers’ collateral. We find that insured farmers increased investment in the years following the shock, while uninsured …
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Oil Palm’s Sustainable Future: The influence of within-plantation management practices on yield and pollinator diversity in oil palm
… more sustainable. Oil palm, a rapidly expanding perennial crop of global importance, presents a model system to explore how sustainable agricultural management practices affect biodiversity, ecosystem services, and yield. This is because it can develop significant structural complexity and …
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Effects of Bran Content, Thermal Treatment, and Storage on Flavor Development and Functionality in Intermediate Wheatgrass Flour
… wheatgrass (IWG, Thinopyrum intermedium) is a perennial crop that has garnered attention for its environmental and nutritional benefits. Selected as a promising candidate among other perennial crops for food use, IWG has good flavor, breeding potential, and superior environmental benefits due …
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Genetic diversity and population structure of Vaccinium vitis-idaea
… challenges associated with achieving this for perennial crops and their wild relatives, which are often clonal. This is because in species capable of asexual reproduction, it is necessary to first differentiate between clonal ramets and unique genets before measuring genetic diversity. We …
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Intercropping dynamics in a perennial Kernza cropping system
A research agenda has been undertaken to perennialize agrarian landscapes in response to structural issues inherent to annual agricultural production, which compromise the sustainability and resiliency of cropping systems. These issues include soil erosion, nutrient runoff, declining soil organic …