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Effects Of Varying Nitrogen Supply On The Critical Period For Weed Control In Corn Zea Mays L
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Book Synopsis Effects of Varying Nitrogen Supply on the Critical Period for Weed Control in Corn (Zea Mays L.) by : Sean P. Evans
Download or read book Effects of Varying Nitrogen Supply on the Critical Period for Weed Control in Corn (Zea Mays L.) written by Sean P. Evans and published by . This book was released on 2001 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Use Efficiency and Yield of Corn (Zea Mays L.) as Affected by Weed Management and Time of Nitrogen Fertilizer Apllication by : Vivas Caraniwan, I
Download or read book Nitrogen Use Efficiency and Yield of Corn (Zea Mays L.) as Affected by Weed Management and Time of Nitrogen Fertilizer Apllication written by Vivas Caraniwan, I and published by . This book was released on 1990 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to determine the effect of weed control methods and time of nitrogen fertilizer application on yield and nitrogen fertilizer use efficiency of corn and to identify weed control practice(s) and time(s) of nitrogen fertilizer application that promote nitrogen use efficiency and high yield of corn at minimum cost. Weed control methods had no significant effects on all parameters studied except for leaf area index (LAI) and weed fresh weight at 50 DAP. Leaf area indices from W6 (handweeding four times) and W5 (preemergence application of atrazine + pendimethalin + hilling-up) were significantly higher than W1 (off-barring + hilling-up) and W2 (hoeing + hilling-up). W6 gave the mst effective control of weeds based on fresh weed weight at 50 DAP. W2 and W5 provided poor control of weeds. W1 and W4 (preemergence application of pendimethalin + spot hoeing + hilling-up) provided less satisfactory control of weeds than W6 but better control than W3 (preemergence application of atrazine + spot hoeing + hilling-up). The differences in crop LAI and weed control efficacies were not reflected in grain yield and nitrogen use efficiency of the crop indicating that all the six weed control methods provided adequate control of weeds in the trial site. The time of N fertilizer application signifantly affected early crop growth and vigor, days to tasseling and silking, plant and ear height, leaf area index, total dry matter yied, ear kernel filling length, number of kernel rows per ear, number of kernels (...).
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 Effect of Nitrogen Levels and Weed Control Methods on Maize (Zea Mays L.) Fodder Grown at Varying Seed Rates by : Darshan Singh Nehra
Download or read book Effect of Nitrogen Levels and Weed Control Methods on Maize (Zea Mays L.) Fodder Grown at Varying Seed Rates written by Darshan Singh Nehra and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Tillage and Herbicides on Corn (Zea Mays L.) Production, Net Return, Weeds, and Soil Properties by : Jun Zhang
Download or read book Effects of Tillage and Herbicides on Corn (Zea Mays L.) Production, Net Return, Weeds, and Soil Properties written by Jun Zhang and published by . This book was released on 1992 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparison of the Effects of Nitrate and Ammonium Nitrogen on Growth and Ionic Balance of Corn (Zea Mays L.) Grown in Various Nutrient Media by : John Alexander MacLeod
Download or read book A Comparison of the Effects of Nitrate and Ammonium Nitrogen on Growth and Ionic Balance of Corn (Zea Mays L.) Grown in Various Nutrient Media written by John Alexander MacLeod and published by . This book was released on 1971 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Critical Time for Weed Removal in Corn (Zea Mays L.) as Influenced by Pre Herbicides by : Ayse Nur Ulusoy
Download or read book Critical Time for Weed Removal in Corn (Zea Mays L.) as Influenced by Pre Herbicides written by Ayse Nur Ulusoy and published by . This book was released on 2019 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: A weed control program that utilizes PRE herbicides and ensures a timely post-emergence weed removal could protect growth and yield of corn. The use of pre-emergence (PRE) herbicides for weed control could reduce the need for multiple POST applications of glyphosate in glyphosate-tolerant (GT) corn and provide an additional mode of action for combating glyphosate-resistant weeds. Thus, field studies were conducted in 2017 and 2018 at Concord, NE with the following objectives develop weed management recommendations that considers soil applied herbicides and determine proper timing of glyphosate based on the crop growth stage. Therefore the material in this thesis is presented in three chapters: Chapter 1 outlines the integrated weed management, critical period of weed control, and pre-emergence (PRE) or post-emergence (POST) herbicide use in corn. Chapter 2 determines the critical time for weed removal in glyphosate-tolerant corn without pre-emergence (PRE) herbicide and atrazine or Verdict-Zidua applied pre-emergence (PRE). Chapter 3 determines how the timing of weed removal and PRE herbicides application could influence growth and yield of glyphosate-tolerant corn.
Download or read book Agrindex written by and published by . This book was released on 1993 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Herbicide Resistance in Weeds: Early Detection, Mechanisms, Dispersal, New Insights and Management Issues by : Ilias Travlos
Download or read book Herbicide Resistance in Weeds: Early Detection, Mechanisms, Dispersal, New Insights and Management Issues written by Ilias Travlos and published by Frontiers Media SA. This book was released on 2020-10-28 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Weed Technology written by and published by . This book was released on 2003 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Tillage, Nitrogen Fertilization, and Surface Mulch on Corn (Zea Mays L.) Yield by : Ali Munawar
Download or read book Effects of Tillage, Nitrogen Fertilization, and Surface Mulch on Corn (Zea Mays L.) Yield written by Ali Munawar and published by . This book was released on 1987 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Critical Period of Weed Control for No-till Field Corn, Zea Mays L., and [soybean], Glycine Max (Merr.) on Two Soil Types in Southwestern Ontario by :
Download or read book Critical Period of Weed Control for No-till Field Corn, Zea Mays L., and [soybean], Glycine Max (Merr.) on Two Soil Types in Southwestern Ontario written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen and Potassium Effects on Growth, Photosynthate Production, and Nutrient Relationships for Corn (Zea Mays L.) Genotypes Differing in Average Ear Number by : Stephen A. Ebelhar
Download or read book Nitrogen and Potassium Effects on Growth, Photosynthate Production, and Nutrient Relationships for Corn (Zea Mays L.) Genotypes Differing in Average Ear Number written by Stephen A. Ebelhar and published by . This book was released on 1985 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Critical Period of Weed Control for No-till Field Corn, Zea Mays L., and [soybean], Glycine Max (Merr.) on Two Soil Types in Southwestern Ontario by : Christopher James Halford
Download or read book Critical Period of Weed Control for No-till Field Corn, Zea Mays L., and [soybean], Glycine Max (Merr.) on Two Soil Types in Southwestern Ontario written by Christopher James Halford and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Time and Rate of Nitrogen Application to Corn (Zea Mays L.) on Nitrate Leaching by : Arthur Alfred Bomke
Download or read book Effect of Time and Rate of Nitrogen Application to Corn (Zea Mays L.) on Nitrate Leaching written by Arthur Alfred Bomke and published by . This book was released on 1972 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Row Spacing and Glyphosate Treatment Timing on Corn (Zea Mays L.) and Soybean (Glycine Max (L.) Merr.) Yield, Subsequent Weed Growth and Soil Moisture by : Caleb Dale Dalley
Download or read book Effect of Row Spacing and Glyphosate Treatment Timing on Corn (Zea Mays L.) and Soybean (Glycine Max (L.) Merr.) Yield, Subsequent Weed Growth and Soil Moisture written by Caleb Dale Dalley and published by . This book was released on 2002 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Weed Management and Nitrogen Loss in Glyphosate-resistant Corn (Zea Mays) by : Chad Lee Smith
Download or read book Weed Management and Nitrogen Loss in Glyphosate-resistant Corn (Zea Mays) written by Chad Lee Smith and published by . This book was released on 2009 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of glyphosate-resistant corn in Missouri has changed traditional reemergence (PRE) followed by postemeregence (POST) herbicide programs to ones that predominately utilize glyphosate POST. POST only programs can allow early season weed competition. The objective was to determine the efficacy of one and two-pass programs using PRE and POST herbicides in glyphosate-resistant corn and to quantitate the nitrogen loss from various application timings in POST glyphosate weed control. The first study composed of one-pass and two-pass herbicide weed control programs. Weed control failures occurred 29% more often using one-pass systems compared to two-pass programs utilizing PREs and yield reductions occurred more often in one-pass systems. Overall, two-pass systems which included the use of a PRE herbicide resulted in more consistent weed control across all species than one-pass POST treatments. The second study consisted of PRE herbicide treatments to favor grass, broadleaf, or mixed weed populations at multiple glyphosate application timings. To document nitrogen loss, weed biomass, leaf chlorophyll meter readings, and stalk nitrate testing was measured. Grass weeds were more detrimental to yield than broadleaf weeds. Chlorophyll meter readings documented nitrogen deficiency between treatments. Corn leaf chlorophyll meter readings taken at tasseling correlated strongly to the resultant grain yield (R2 [greater than or equal to] .84). Higher year-end stalk nitrate accumulations were reflective of higher grain yield.
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