Download or read book Engineering Solutions for Improved Spray Applications in Perennial Specialty Crops written by Haitham Yaqout Bahlol and published by . This book was released on 2019 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spray applications for pest management in tree crops have off-target drift potential due to local meteorological conditions, crop characteristics, spraying equipment and properties of the sprayed materials. Despite decades of research, reducing the negative impact of agrochemicals remains challenging. Therefore, the overall goal of this dissertation was to explore new engineering approaches with hypothesis that these could contribute in reducing the negative impacts of spray applications in perennial specialty crops. In first objective, developed was a new tool for rapid and in-field spray pattern assessments in real-time as a decision making basis for adjusting sprayer attributes to reduce the drift during spray applications. Such a tool, smart spray analytical system (SSAS), was tested for its functionality under field conditions. SSAS was then successfully used to quantify air velocity and spray patterns for two commercial orchard sprayers. Pertinent data showed variation between different sides of the sprayers in terms of air assist and spray volume uniformity and symmetry that could be due to the sprayer air delivery design features. The second objective focused on developing a new strategy, i.e. horticultural oil (HO) thermotherapy for pest management. An apparatus was designed for laboratory testing of the HO-thermotherapy for pear psylla control. Psylla bioassays were exposed to HO-thermotherapy to evaluate feasibility of such approach and to find the optimal spraying parameters (heat, nozzle, pressure and concentration of the spray mix). Results showed that HO-thermotherapy applications had significantly higher pear psylla mortality (63.7 ℗ł 2.4 % [mean ℗łstandard error]) than HO only (43.6 ℗ł 1.8 %). Similarly, nozzle and concentration had a role in the way to deliver the HO-thermotherapy effect. Overall, the new engineering solutions, SSAS for spray calibration and assessment as well as HO-thermotherapy, could potentially be the effective solutions to reduce the negative impact of agrochemicals in perennial specialty crops production. Field studies are recommended to develop a clear relationship between the spray/air velocity patterns and canopy attributes for different crops, and to evaluate efficacy of HO-thermotherapy along with pertinent phytotoxicity effects.
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.
Download or read book The Future Role of Pesticides in US Agriculture written by National Research Council and published by National Academies Press. This book was released on 2000-11-02 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although chemical pesticides safeguard crops and improve farm productivity, they are increasingly feared for their potentially dangerous residues and their effects on ecosystems. The Future Role of Pesticides explores the role of chemical pesticides in the decade ahead and identifies the most promising opportunities for increasing the benefits and reducing the risks of pesticide use. The committee recommends R&D, program, and policy initiatives for federal agriculture authorities and other stakeholders in the public and private sectors. This book presents clear overviews of key factors in chemical pesticide use, including: Advances in genetic engineering not only of pest-resistant crops but also of pests themselves. Problems in pesticide useâ€"concerns about the health of agricultural workers, the ability of pests to develop resistance, issues of public perception, and more. Impending shifts in agricultureâ€"globalization of the economy, biological "invasions" of organisms, rising sensitivity toward cross-border environmental issues, and other trends. With a model and working examples, this book offers guidance on how to assess various pest control strategies available to today's agriculturist.
Download or read book Long Island Horticulture News written by and published by . This book was released on 1997 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Building Soils for Better Crops written by Fred Magdoff and published by Sare. This book was released on 2009 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: "'Published by the Sustainable Agriculture Research and Education (SARE) program, with funding from the National Institute of Food and Agriculture, U.S. Department of Agriculture."
Download or read book Railway Engineering and Maintenance written by and published by . This book was released on 1948 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California Cultivator written by and published by . This book was released on 1913 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Protection Reference written by and published by . This book was released on 1997 with total page 2604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Survey written by and published by . This book was released on 1980 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Download or read book Modern Seed Technology written by Alan G Taylor and published by . This book was released on 2021-10-25 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satisfying the increasing number of consumer demands for high-quality seeds with enhanced performance is one of the most imperative challenges of modern agriculture. In this view, it is essential to remember that the seed quality of crops does not improve.
Download or read book Railway Engineer written by and published by . This book was released on 1976 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lettuce Drop written by Owen Francis Burger and published by . This book was released on 1913 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Country Gentleman the Magazine of Better Farming written by and published by . This book was released on 1910 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emerging Technologies to Benefit Farmers in Sub Saharan Africa and South Asia written by National Research Council and published by National Academies Press. This book was released on 2009-02-21 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increased agricultural productivity is a major stepping stone on the path out of poverty in sub-Saharan Africa and South Asia, but farmers there face tremendous challenges improving production. Poor soil, inefficient water use, and a lack of access to plant breeding resources, nutritious animal feed, high quality seed, and fuel and electricity-combined with some of the most extreme environmental conditions on Earth-have made yields in crop and animal production far lower in these regions than world averages. Emerging Technologies to Benefit Farmers in Sub-Saharan Africa and South Asia identifies sixty emerging technologies with the potential to significantly improve agricultural productivity in sub-Saharan Africa and South Asia. Eighteen technologies are recommended for immediate development or further exploration. Scientists from all backgrounds have an opportunity to become involved in bringing these and other technologies to fruition. The opportunities suggested in this book offer new approaches that can synergize with each other and with many other activities to transform agriculture in sub-Saharan Africa and South Asia.
Download or read book Building Soils for Better Crops written by Fred Magdoff and published by . This book was released on 2021-06 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Survey of San Bernardino County Southwestern Part California written by George A. Woodruff and published by . This book was released on 1980 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
