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.
Results
Showing 1 to 20 of 25 for “"major crops"”.
-
An Economic Comparison of High Tunnel and Open-Field Strawberry Production in Southeastern Virginia and A Joint Estimation of Acreage Planted to U.S. Major Crops
… on the joint acreages planted to eight U.S major crops (barley, corn, cotton, peanuts, rice, sorghum, soybeans, and wheat). We found a positive and statistically significant marginal effect of the expected peanuts' revenue on its acreage share. The expected corn revenue had a negative …
-
Impacts of government pricing policies on agricultural production and the achievement of government policy objectives in Zambia
… to derive own and cross-price responses for the major crops grown in Zambia. The elasticity estimates derived indicated significant cross-price relationships among the major crops grown in Zambia. Increase (decrease) in the price of maize, for example, substantially reduces (increase) the …
-
Potential self-sufficiency in major Egyptian crops: necessary production and price policies as estimated by an econometric model
… to the understanding and solving of the major Egyptian agricultural problems. The major crops analyzed in this study are wheat, beans, corn, rice, and sugarcane. Other crops in the crop rotation such as berseem, winter tomatoes, cotton, and summer potatoes also are analyzed. These crops …
-
Observational analysis of twentieth century summer climate over North America
… as well as acreage, yield, and production of major crops. The study focused primarily on changes in July and August climate in the Midwest and Great Plains, home to the majority of agricultural production in the U.S. Statistically significant and sustained increases in summer precipitation and …
-
Metrics to segment the Brazilian agricultural financial market for operating loans
… Market for Operating Loans for the nine major crops in Brazil in the season 2018/2019. The study will determine the size of the total operating cost market, determine the size of the Rural-Credit versus Non-Credit funds, and divide it out by the financial intermediation institution. Our …
-
An assesment of the financial viability of investing in an animal drawn ripper
… soyabean, sunflower and groundnuts are among the major crops grown by the rural households and were hence considered in this study. Ripping requires some investment into the ripper. Purchasing a ripper is an investment in which financial resources are laid out and the resulting benefits flow over …
-
An assesment of the financial viability of investing in an animal drawn ripper
… soyabean, sunflower and groundnuts are among the major crops grown by the rural households and were hence considered in this study. Ripping requires some investment into the ripper. Purchasing a ripper is an investment in which financial resources are laid out and the resulting benefits flow over …
-
The role of Arabidopsis thaliana heterochromatin component H2A.W in meiotic recombination
… with large, repetitive genome, for example major crops such as maize and wheat. This considerably limits the potential to introduce allelic diversity throughout the genome during crop improvement. My study aims to provide novel insights in the control of meiotic recombination and to identify …
-
A study of salt tolerance in Arabidopsis thaliana and Hordeum vulgare
… 100 mM NaCl (which includes all of the world’s major crops), it is the ionic component of salinity stress that impairs growth and yield. Further research on salinity stress in crops should focus on understanding the processes that control ionic balance rather than osmoregulation.
-
Drought assessment of Pakistan and its impact on its agricultural production
… production is positive in those provinces. The major crops of the Kharif season are rice, cotton, sugar cane and maize. The modeling analysis does not show any correlation between the drought and their respective production as these crops are mainly sown on rainfed crop land, while a small …
-
Metabolomic Discrimination of Near Isogenic Low and High Phytate Soybean [GLYCINE MAX (L.) MERR.] Lines
Phytate is the major storage form of phosphorus in seeds of soybeans. Because phytate chelates mineral cations including calcium, iron, and zinc, these mixed salts are often excreted by non-ruminant animals such as humans, swine, poultry, and fish. While this causes iron and zinc deficiencies, …
-
Identification of Physiological and Morphological Traits Governing High Water Use Efficiency in Alfalfa
… the greatest amount of water among all the major crops. With a growing demand for water resources due to an increase in human population and industrial water use, plus frequent drought due to climate change, irrigation water has become increasingly scarce and expensive. To sustain high …
-
Future crop suitability assessment and the integration of Orphan crops into Kenya's food systems
… has also been a concentration of research on major crops, such as maize and common bean. This study, therefore, seeks to contribute to the research gap in future projections of crop suitability for major and minor crops in Kenya. Temperature and rainfall data, downloaded from CORDEX, from four …
-
Exploring the potential of cassava for agricultural growth and economic development in Nigeria
… cultivated area, production, yield and prices of major crops including cassava at the national level covering the period 1970–2009. The study surveyed 315 cassava producers (including 278 gari processors), 105 marketers involved in cassava marketing and 30 stakeholders from three regions in the …
-
Climatic and Anthropogenic Influences on Food and Water Security
… the sensitivity of crop yields to droughts for major crops and investigate the association of various climate and anthropogenic factors on the change in crop yield loss risk, (2) to elucidate the potential controlling drivers and their influence on contrasting corn acreage trends between …
-
From local to global: understanding linkages between climate shocks and food trade
… In this dissertation, we focus our efforts on 17 major crops (including maize, rice, soybeans, and wheat) for the period 1961-2014. We begin by providing estimates of likely changes in annual crop-specific spatial distributions; these estimates have also been made available publicly as the …
-
BlueBird: national-scale real-time crop cover classification using multi-stage deep learning approach
… that can be used to effectively distinguish crops. In this work, we present a deep-learning- based method, named BlueBird, to accurately classify crop cover types in real-time at the national scale. BlueBird consists of three sub-models: prior-knowledge model, real-time optical model, and …
-
Exploring the mechanisms of Palmer amaranth resistance to protoporphyrinogen oxidase-inhibitor herbicides, dynamics of gender, and management strategies
… economically damaging and troublesome weed in major crops grown in the USA. Currently, Palmer amaranth is reported to have evolved resistance to nine herbicide sites of action, raising the importance of integrating multiple weed management strategies. The objectives of this dissertation were to …
-
Developing molecular genetic tools for gene discovery in soybean (Glycine max)
… max (L.) Merr.) is one of the most valuable crops grown worldwide for seed protein and oil production and can fix atmospheric nitrogen. The completed genome sequence and the availability of transcriptomics and proteomics data for genomic and physiological studies have made soybean a feasible …
-
Modeling the Food-Water Nexus: A Spatio-temporal Accounting of Agricultural Land and Water Use in the United States
… of irrigated and rainfed harvested areas for 30 major crops from 1981 to 2019. Existing datasets often face a trade-off between spatial detail and temporal coverage. Remote sensing provides fine spatial resolution but limited historical depth, while administrative records extend further back in …
Page 1 of 2