Download or read book Role of Weather and Technology on Crop Yield Risk for Corn Soybeans and Winter Wheat in Selected Regions of the U S written by James B. French and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of the Effects of Disaster Conditions on Wheat Soybeans and Feed Grains Production written by United States. Congress. House. Committee on Agriculture. Subcommittee on Wheat, Soybeans, and Feed Grains and published by . This book was released on 1990 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Weather and Technology on Corn Yields in the Corn Belt 1929 62 written by Lawrence Hugh Shaw and published by . This book was released on 1965 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Yields and Climate Change to the Year 2000 written by and published by . This book was released on 1980 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatiotemporal Analyses of Agricultural Adaptations to a Changing U S Climate written by Christopher Alfons Seifert and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As our species moves deeper into an era in which we have an increasing influence over the climate and health of our planet, it is important to examine the likely effects of our activities as well as the tools we can use to adapt to coming changes. Occupying more land area than any other human activity and employing biological systems vulnerable to extreme heat, agriculture is chief amongst vital industries impacted by a changing climate. Previous work has focused on those impacts, finding potentially drastic effects for countries like the United States, the world's largest producer of maize and soybean, whose major production regions are fortuitously positioned near a climate optimum for those key crops. This dissertation examines various specific practices that could be deployed to build resilience and prevent the degradation of the U.S. agricultural system under potential 21st century climate regimes. Double cropping, crop rotation, cover cropping, and irrigation all have their place as potential adaptations. This work uses mechanistic and statistical models as well as newly available datasets and data processing methodologies to explore the expansion of suitability, the spatial variability, the yield effects, and the temporal trends in adoption of these practices respectively. Chapter 1 runs mechanistic phenological models for winter wheat and soybean under recent and future climate scenarios, finding that even small increases in expected temperature and growing season length can lead to large increases in double crop suitability. These changes in suitability have already been occurring over the last few decades and appear poised to accelerate along with our changing climate. While the increase the area suitable for this cropping practice is large, especially later in this century, the implied increase in agricultural production that accompanies it is substantially smaller than potential yield losses. Building on the first chapter but exploring inter-yearly crop rotation patterns versus intra-yearly patterns, Chapter 2 uses a large dataset of field-level yields to examine the yield penalties seen in continuous maize and soybean fields. Yield loss from continuous cropping found in the model was broadly consistent with findings from field trials. Additionally, the spatial breadth and temporal depth of the dataset enabled us to find that areas with large negative yield anomalies see worse yield penalties for continuous cropping, as do soybean crops grown in areas or years with low early season vapor pressure deficit and maize crops grown in areas or years with low early or late minimum temperatures. Chapter 3 examines another promising crop configuration with potential to serve as a climate adaptation; cover crops. In it, we build a cover crop classifier based on remotely sensed data and cross the classifier's output with already existing soil quality as well as maize and soybean yield maps. The raw classifier output shows that, as intended, cover crops are more likely to be found on poorer soils in the Midwest. Contrary to other sources, however, yield benefits for adopters of the practice are quite mild, even after a number of years following the practice. Combining this conclusion with the currently high cost of cover crop adoption, continued expansion of government funding for cover cropping appears necessary to propagate the practice. Chapter 4 uses methods built in Chapter 3, but with a different aim in mind -- mapping irrigation and its adoption in two key states in the western U.S. maize-soybean belt. Here we find that irrigation has indeed been on the increase over the last decade and a half in Nebraska, though no definitive trends were seen in Iowa. The increase in Nebraska does not appear to be driven by changes in the difference between irrigated and dryland yields, and irrigation adoption was more likely to be undertaken on higher quality land from 2003-2017 versus earlier in the practice's history.
Download or read book Weather and Technology in the Production of Corn and Soybeans written by Louis Milton Thompson and published by . This book was released on 1963 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmospheric Anomalies and Crop Yields in North America written by Patrick J. Michaels and published by . This book was released on 1979 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Contribution of Weather and Technology to U S Soybean Yields written by Alan Grant Miner and published by . This book was released on 1982 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weather Technology and Corn and Soybean Yields in the U S Corn Belt written by Michael A. Tannura and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to investigate the relationship between weather, technology, and corn and soybean yields in the U.S. Corn Belt. Corn and soybean yields, monthly temperature, and monthly precipitation observations were collected over 1960 through 2006 for Illinois, Indiana, and Iowa. Multiple regression models were developed based on specifications found in studies by Thompson (1962, 1963, 1969, 1970, 1985, 1986, 1988). Estimated models explained at least 94% and 89% of the variation in corn and soybean yields for each state, respectively. This research provided strong evidence that precipitation, temperature, and a linear time trend to represent technological improvement explained all but a small portion of the variation in corn and soybean yields in the U.S. Corn Belt. An especially important finding was that relatively benign weather for the development of corn since the mid-1990s should not be discounted as an explanation for seemingly high yields. The potential impact of this finding on the agricultural sector is noteworthy. Trend yield forecasts based on perceptions of a rapid increase in technology may eventually lead to poor forecasts. Unfavorable weather in the future may lead to unexpectedly low corn yields that leave producers, market participants, and policy-makers wondering how such low yields could have occurred despite technological improvements.
Download or read book Soybean Group Risk Plan GRP a Pilot Test for 1993 and 1994 written by and published by . This book was released on 1993 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change Adaptation of Corn Production in the US Midwest written by Lei Gu and published by . This book was released on 2017 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn production in the US Midwest is known for its important role in the national and global corn productivity and is facing massive challenges posed by the future changes in temperature and rainfall variability. An over-winter cover crop that grows during the gap period between cash crops can provide several environmental benefits such as improve infiltration, reduce nitrate-N loss, reduce runoff and erosion through its interaction with many of the soil-water-plant processes. Therefore, the addition of an over-winter cover crop in the corn-soybean rotation is a promising approach that has the potential to adapt corn production to the future climate and mitigate the climate change risks. The objective of this dissertation is to advance the understanding of long-term impacts of cover crop and evaluate the use of cover crop as a climate change adaptation strategy for corn production in the Midwestern United States. This dissertation accomplished the research goals by integrating field experimental observations, future climate projections, agricultural system modeling and quantitative data analysis. Collectively, this research illustrates the impacts of climate change and the efficacy of cover crop for the sustainability of corn production, and provide insights into the management and policy efforts for sustainable corn production in the Midwestern United States and other regions that are experiencing similar challenges.
Download or read book Climate Change and World Agriculture written by Martin L. Parry and published by Routledge. This book was released on 2019-10-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in 1990, this book analysed the sensitivity of the world food system and looked at the variety of ways in which it would be affected by climate change. It describes the effects of climate change on agriculture, estimates the impacts on plant and animal growth and looks at the geographical limits to different types of farming. It also considers the range of possible ways to adapt agriculture and so to mitigate the disastrous consequences of climate change.
Download or read book South Dakota s Agricultural Economy in Perspective written by and published by . This book was released on 1987 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Yields and Climate Change to the Year 2000 Climate model and technical appendixes written by and published by . This book was released on 1980 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crops and Climate written by Stanley Alcide Changnon and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Crop Losses to Natural Disasters written by United States. Congress. House. Committee on Agriculture. Subcommittee on Oilseeds and Rice and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetically Engineered Crops written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-01-28 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetically engineered (GE) crops were first introduced commercially in the 1990s. After two decades of production, some groups and individuals remain critical of the technology based on their concerns about possible adverse effects on human health, the environment, and ethical considerations. At the same time, others are concerned that the technology is not reaching its potential to improve human health and the environment because of stringent regulations and reduced public funding to develop products offering more benefits to society. While the debate about these and other questions related to the genetic engineering techniques of the first 20 years goes on, emerging genetic-engineering technologies are adding new complexities to the conversation. Genetically Engineered Crops builds on previous related Academies reports published between 1987 and 2010 by undertaking a retrospective examination of the purported positive and adverse effects of GE crops and to anticipate what emerging genetic-engineering technologies hold for the future. This report indicates where there are uncertainties about the economic, agronomic, health, safety, or other impacts of GE crops and food, and makes recommendations to fill gaps in safety assessments, increase regulatory clarity, and improve innovations in and access to GE technology.
