Technological Change, Climatic Variability, and Winter Wheat Yields PDF Download
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Author: Linda O. Mearns
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
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Book Description
Author: Linda O. Mearns
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
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Book Description
Author: Linda Opal Mearns
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
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Book Description
Author: Linda O. Mearns
Publisher:
ISBN:
Category : Wheat
Languages : en
Pages : 412
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Book Description
Author: Jack J. Bond
Publisher:
ISBN:
Category : Wheat
Languages : en
Pages : 112
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Book Description
Author:
Publisher:
ISBN:
Category : Agricultural estimating and reporting
Languages : en
Pages : 172
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Book Description
Author: Erich Richard Brandstetter
Publisher:
ISBN:
Category :
Languages : en
Pages : 276
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Book Description
Author: Cori Salinas
Publisher:
ISBN:
Category : Wheat
Languages : en
Pages : 0
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Book Description
Wheat offers winter forage for cattle grazing and is one of the most valuable cash crops in Texas. Yields averaged 30.5 bushels per acre, with a maximum of 37 bushels and a minimum of 24 bushels in 2007 and 2006, respectively. In 2020, the U.S. ranked fifth for wheat production worldwide, while Texas ranked ninth within the U.S. About 40-45% of the wheat produced in the U.S. is used domestically, and 55-60% is exported overseas. Winter wheat yields can be impacted by the various impacts of climate change, which can eventually impact farmers’ income. Rising temperatures and fluctuating precipitation have been observed globally over several decades. Considering changes in climate, farmers will have to adjust their strategies to keep up with changes in weather patterns and changes in the market. The objective of this research is to evaluate the impacts of climate change on Texas winter wheat yield. The data for this research includes yield, prices, soil, management strategies, and climate factors, including precipitation and temperature, from sixteen wheat-producing counties in Texas. Data collection comes from the National Agricultural Statistical Service (NASS), the United States Department of Agriculture (USDA), and the Parameter-elevation Regressions on Independent Slopes Model (PRSIM). Graphs, correlations, and projection analysis will present how factors have an impact on winter wheat yields. Agricultural Policy Environmental eXtender (APEX) and Coupled Model Intercomparison Project-Phase 5 (CMIP 5) are used in this study to determine the most reasonable future trajectory of Texas winter wheat yields. The APEX model has been successfully calibrated to simulate winter wheat crop yields. This study contributes to the understanding of climate change’s impact on yields and farm incomes by projecting their impacts on wheat yields in Texas. Results indicated that yields are expected to decrease due to the impacts of future climate change. In the RCP4.5 scenario, when temperatures are expected to increase 4 to 6 °F, simulated projections resulted in a 44.44% yield decrease during the 2046-2070 time period compared to the Historical PRISM baseline from 1981 to 2005. Maximum yield increases were 43.48% under the PRISM 1981-2017 and the Historical CMIP5 1956-1980 scenarios under the same baseline. Results compared to the PRISM 1981 to 2017 baseline depicted a maximum wheat yield decrease of 54.55% under the RCP4.5 2046-2070 time period scenario. The maximum yield increase of 20% compared to this baseline came from the Historical PRISM 1981-2005 time period scenario. The projected changes in climate will be detrimental to some winter wheat growing areas but also improve crop growth in other areas. Overall, yields will not be as heavily impacted as projected.
Author:
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ISBN:
Category : Agricultural estimating and reporting
Languages : en
Pages : 144
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Book Description
Author:
Publisher:
ISBN:
Category : Agricultural estimating and reporting
Languages : en
Pages : 234
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Book Description
Author: Shu Geng
Publisher: University of California Davis, Department of Agronomy & Range Science
ISBN:
Category : Science
Languages : en
Pages : 262
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Book Description
Technological advances since the end of World War II have increased global grain production twofold. Yet highly variable weather in the 1980s caused numerous shortfalls in world food production despite the tremendous improvement in technology. Global climate & environmental changes have added yet another element of uncertainty to food production on both sides of the Pacific Ocean. The stability of the balance of supply & demand in grain can be improved if grain yield variability is understood & minimized. Obviously, grain production & availability in Pacific Rim have ramifications for food security programs worldwide. The key objective of this book is to provide quantitative estimates of the variability of food production & instability of the food supply as caused by weather variation & climate changes in Pacific Rim countries. An understanding of the instability provides a basis for international cooperation. Thirty-five agricultural & environmental scientists from Australia, Canada, China, Japan, the Philippines & the United States contributed papers in this book. Orders can be made to the Department of Agronomy & Range Science, University of California, Davis, CA 95616. Tel. 916-752-6939; FAX 916-752-4361.
