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Weed Growth And Corn Yield As Affected By Weed Species And Weed Emergence Time Relative To Corn Emergence
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Book Synopsis Weed Growth and Corn Yield as Affected by Weed Species and Weed Emergence Time Relative to Corn Emergence by : Corey J. Guza
Download or read book Weed Growth and Corn Yield as Affected by Weed Species and Weed Emergence Time Relative to Corn Emergence written by Corey J. Guza and published by . This book was released on 2004 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Mechanistic Approach to Predict Weed-corn Growth Interactions by : Michael J. Moechnig
Download or read book A Mechanistic Approach to Predict Weed-corn Growth Interactions written by Michael J. Moechnig and published by . This book was released on 2003 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Weed-Crop Competition by : Robert L. Zimdahl
Download or read book Weed-Crop Competition written by Robert L. Zimdahl and published by John Wiley & Sons. This book was released on 2007-11-19 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the past 20 years, the first edition of this text has been widely cited as authoritative academic reference. The latest edition continues the tradition set by the original book, and covers weed science research that has been published since 1980. This book aims to reduce the instance of research duplication—saving scientists and supporting institutions time and money. Not only does the second edition of Weed Crop Competition review, summarize, and combine current research; it critiques the research as well. This text has the potential to accelerate advancements in weed crop competition, which remains an important factor that affects crop yields. Scientists in foreign countries where access to literature is often limited or nonexistent, will find the information in this text invaluable. Weed scientists, crop scientists, plant ecologists, sustainable agriculturists, and organic agriculturists will be well-pleased with this long overdue and much needed new editionWeed Crop Competition provides a unique reference that reviews, summarises and synthesizes the literature published concerning research on this topic. The first edition has been one of the most frequently cited sources in weed science for the past 20 years. The second edition covers the significant body of literature that has been published since 1980. Originally intended to survey existing research, the intent of the book is to reduce the instance of research duplication, thus saving scientists and their institutions time and money, and expediting advancements in weed crop competition, an important factor affecting crop yields. Scientists in foreign countries where access to the literature is often limited or non-existent, find the information an invaluable resource. This long overdue and much needed new edition rejuvenates the tradition set by the original book.
Book Synopsis Effects of Shading, Relative Growth Rate and Population Density on Weed Responses to Nitrogen Management in Corn by : Matthew Mechling Harbur
Download or read book Effects of Shading, Relative Growth Rate and Population Density on Weed Responses to Nitrogen Management in Corn written by Matthew Mechling Harbur and published by . This book was released on 2003 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three experiments were conducted to identify mechanisms that might explain variations in weed responses to nitrogen (N) fertilization. The first experiment investigated the responses of two crop and six weed species to N fertilization rate and shading in a growth chamber environment. The dry weight and leaf area responses, among species, to N supply and shading were positively correlated with their maximum relative growth rates with the high N fertilization rate. Relative growth rates, among species, were negatively correlated with mean seed weights. The second experiment was conducted in field plots to investigate the effects of N fertilization timing and corn (Zea mays L.) population density on giant foxtail (Setaria faberi Herrm.), velvetleaf (Abutilon theophrasti Medicus), and common waterhemp (Amaranthus rudis Sauer) competition with corn. Giant foxtail reduced corn yield when no N fertilizer was applied until late June (POST N) but not when N fertilizer was applied prior to corn emergence (PRE N). Velvetleaf seed yield was greater with the PRE N application than the POST N application, but giant foxtail seed yield was lower with PRE N than with POST N. The high corn population density reduced velvetleaf and giant foxtail seed yields, compared to the low corn population density. Corn, velvetleaf and giant foxtail seed yields were associated with their heights and light interception in mid-season. N fertilization timing and corn population density did not affect common waterhemp. A third experiment investigated the interactions between corn and velvetleaf seedlings grown in a replacement series, as affected by N fertilization rate, in a glasshouse environment. N effects on seedling size of each species were positively correlated with the population density of that species. Relative yield responses suggested that velvetleaf size was reduced by corn competition and that antagonism might have occurred. A growth analysis of corn and velvetleaf seedling monocultures identified N responses. The relative growth rates of velvetleaf were greater than those of corn. The net assimilation rate of velvetleaf was lower with the high N supply than with low N, perhaps due to an increase in self-shading with high N.
Book Synopsis Modern Weed Management by : O. P. Gupta
Download or read book Modern Weed Management written by O. P. Gupta and published by . This book was released on 2004 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Role of Weed Emergence Time for the Relative Seed Production in Maize by : Stefano Benvenuti (agrario.)
Download or read book Role of Weed Emergence Time for the Relative Seed Production in Maize written by Stefano Benvenuti (agrario.) and published by . This book was released on with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A History of Weed Science in the United States by : Robert L Zimdahl
Download or read book A History of Weed Science in the United States written by Robert L Zimdahl and published by Elsevier. This book was released on 2010-02-04 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is important that scientists think about and know their history - where they came from, what they have accomplished, and how these may affect the future. Weed scientists, similar to scientists in many technological disciplines, have not sought historical reflection. The technological world asks for results and for progress. Achievement is important not, in general, the road that leads to achievement. What was new yesterday is routine today, and what is described as revolutionary today may be considered antiquated tomorrow. Weed science has been strongly influenced by technology developed by supporting industries, subsequently employed in research and, ultimately, used by farmers and crop growers. The science has focused on results and progress. Scientists have been--and the majority remain--problem solvers whose solutions have evolved as rapidly as have the new weed problems needing solutions. In a more formal sense, weed scientists have been adherents of the instrumental ideology of modern science. That is an analysis of their work, and their orientation reveals the strong emphasis on practical, useful knowledge; on know how. The opposite, and frequently complementary orientation, that has been missing from weed science is an emphasis on contemplative knowledge; that is, knowing why. This book expands on and analyzes how these orientations have affected weed science’s development. The first analytical history of weed science to be written Compares the development of weed science, entomology and plant pathology Identifies the primary founders of weed science and describes their role
Book Synopsis A Bioeconomic Model for Weed Management in Corn and Soybean by : Scott Mitchell Swinton
Download or read book A Bioeconomic Model for Weed Management in Corn and Soybean written by Scott Mitchell Swinton and published by . This book was released on 1991 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Certain Weeds Upon the Yield of Corn by : Eugene Ellis Downing
Download or read book The Effect of Certain Weeds Upon the Yield of Corn written by Eugene Ellis Downing and published by . This book was released on 1942 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Manage Weeds on Your Farm by : Charles L. Mohler
Download or read book Manage Weeds on Your Farm written by Charles L. Mohler and published by . This book was released on 2021 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manage Weeds on Your Farm: A Guide to Ecological Strategies provides you with in-depth information about dozens of agricultural weeds found throughout the country and the best ways of managing them. In Part One, the book begins with a general discussion of weeds: their biology, behavior and the characteristics that influence how to best control their populations. It then describes the strengths and limitations of the most common cultural management practices, physical practices and cultivation tools. Part Two is a reference section that describes the identification, ecology and management of 63 of the most common and difficult-to-control weed species found in the United States.
Book Synopsis Aspects of the Physiology and Agronomy of Competition in Crop Plants by :
Download or read book Aspects of the Physiology and Agronomy of Competition in Crop Plants written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Charles L. Mohler Publisher :Natural Resource Agriculture and Engineering Service (Nraes) ISBN 13 :9781933395210 Total Pages :156 pages Book Rating :4.3/5 (952 download)
Book Synopsis Crop Rotation on Organic Farms by : Charles L. Mohler
Download or read book Crop Rotation on Organic Farms written by Charles L. Mohler and published by Natural Resource Agriculture and Engineering Service (Nraes). This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corn Growth and Development and Management Information for Replant Decisions by : L. L. Hardman
Download or read book Corn Growth and Development and Management Information for Replant Decisions written by L. L. Hardman and published by . This book was released on 1994 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relationships Among Woolly Cupgrass Emergence, Fecundity, and Seedbank Dynamics, and Their Impacts on Management in Corn by : James A. Mickelson
Download or read book Relationships Among Woolly Cupgrass Emergence, Fecundity, and Seedbank Dynamics, and Their Impacts on Management in Corn written by James A. Mickelson and published by . This book was released on 1999 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biology and Management of Problematic Crop Weed Species by : Bhagirath Chauhan
Download or read book Biology and Management of Problematic Crop Weed Species written by Bhagirath Chauhan and published by Elsevier. This book was released on 2021-09-04 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weeds are the main biological constraint to crop production throughout the year. Uncontrolled weeds could cause 100% yield loss. In Australia, the overall cost of weeds to Australian grain growers was estimated at AU$ 3.3 billion annually. In terms of yield losses, weeds amounted to 2.7 million tonnes of grains at a national level. In the USA, weeds cost US$ 33 billion in lost crop production annually. In India, these costs were estimated to be much higher (US$ 11 billion). These studies from different economies suggest that weeds cause substantial yield and economic loss. Biology and Management of Problematic Weed Species details the biology of key weed species, providing vital information on seed germination and production, as well as factors affecting weed growth. These species include Chenopodium album, Chloris truncata and C. virgate, Conyza bonariensis and C. canadensis, Cyperus rotundus, and many more. This information is crucial for researchers and growers to develop integrated weed management (IWM) strategies. Written by leading experts across the globe, this book is an essential read to plant biologists and ecologists, crop scientists, and students and researchers interested in weed science. Provides detailed information on the biology of different key weed species Covers weed seed germination and emergence Presents the factors affecting weed growth and seed production
Book Synopsis The Relation of Some Environmental Factors to the Pre-emergence Treatment of Corn with 2,4-dichlorophenoxyacetic Acid and Soybeans with Ammonium Trichloracetate by : Hanumappa Ramappa Arakeri
Download or read book The Relation of Some Environmental Factors to the Pre-emergence Treatment of Corn with 2,4-dichlorophenoxyacetic Acid and Soybeans with Ammonium Trichloracetate written by Hanumappa Ramappa Arakeri and published by . This book was released on 1949 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
