Download or read book Efficacy of Herbicides and Their Mixtures on Weed Control in Wheat Triticum Aestivum L written by Arun Jaggi and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efficacy of Separate and Premix Formulation of Herbicides on Weeds written by Rakesh Kumar and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat (Triticum aestivum L.) is second most important food grain crop of India and is associated with the food security of the country.India needs more food around 105 million tonnes for feeding the increasing population by 2020 A.D. and this demand has to be met primarily from wheat crop as this is the only assured food crop which production and productivity could be sustained. Further wheat area is decreasing every year and there is very little scope for expansion of area in the future. So there is urgent need to vertical increase in yield per hectare to ensure household food security.Herbicide rotation and use of herbicide mixture are two major strategies to prevent the selection of resistant biotypes of a weed species. Herbicides with different mode of action when mixed together, bind to different target site in weeds and prevent the probability of target site resistance in susceptible species. Today, most of the commercially available herbicides are mixture of grassy and non-grassy herbicides and have efficiency against these types of weeds only. Therefore, targeted weed control mixtures are required to prevent resistance in one or more weed species.
Download or read book A Study of the Thifensulfuron Tribenuron Herbicide Mixture for Weed Control Efficacy and Safety to Wheat Cultivars written by Raouf Cherif and published by . This book was released on 1992 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Competitive Effects and Control of Weeds in Winter Wheat on the Anatolian Plateau Turkey written by Cengiz Tezel and published by . This book was released on 1975 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat is the major crop produced on the Anatolian Plateau of Turkey. Annual weeds cause large yields reductions in the wheat crop. Several formulations of 2, 4-D and mixtures of 2, 4-D and 2,4, 5-T are the only materials currently available for use in Turkey on wheat. The objective of this study was to determine the optimum time for application of herbicides in order to reduce competition between winter wheat (Triticum aestivum cv. 'Bolal') and annual weeds. Several herbicides and herbicide mixtures were compared for their effectiveness against two major weed species, yellowweed (Boreava orientalis L.) and cornflower (Centaurea cyanus L.). Herbicides were applied at three different dates according to growth stages of wheat and weeds. Two series of handweeded plots were also included. One set allowed weed competition with the wheat for 4 and 8 weeks and was handweeded for the remainder of the season. The other set was kept free of weeds for 4 and 8 weeks and left weedy for the remainder of the season. Weed-free and weedy control plots were included. Wheat which was free from weed competition in the early part of the growing season produced the highest yields. Plots on which herbicides were applied at the earliest date produced higher yields than where herbicides were applied later. Optimum time for herbicide application was when wheat was in the two to three tiller stage and weeds were small, five to six leaf stage. Delaying the application of herbicides beyond the critical period of competition, which is determined by stage of growth of weeds and wheat, resulted in a continuing decrease in wheat yields. Chemicals which produced satisfactory weed control and increased wheat yields were, 2,4-D, 2,4-D + 2,4,5-T, bromoxynil + MCPA, and terbutryn + 2,4-D combinations. The terbutryn + 2,4-D combination needs further research because of possible phytotoxicity to wheat. It was concluded that using only herbicides now available in Turkey, wheat yield increases of 25 to 50% or more are possible by applying herbicides at the optimum time.
Download or read book Bio efficacy of Herbicides and Their Mixtures on Broad Leaf Weeds in Wheat With CD Copy written by Abdul Wahab Walizada and published by . This book was released on 2018 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed Control Efficiency of Bioherbicides in Wheat Triticum Aestivum written by Rahamdad Khan and published by . This book was released on 2012-10-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating Bio Efficacy of Pre Emergence Herbicides with Rice Straw Mulch for Weed Management in Wheat Triticum Aestivum L With CD Copy written by Sharad and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Increasing Weed management Tools with an Herbicide Safener for Control of Annual Grasses in Wheat written by Damilola A. Raiyemo and published by . This book was released on 2020 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pacific Northwest is a highly productive wheat growing region of the world. One of the challenges confronting wheat farmers in the region is control of weeds below levels that negatively impact crop yield. Annual grasses are most troublesome to wheat farmers in the region due to similarities in growth habits between wheat and annual grasses. Growers often rely on preemergence or early postemergence herbicides for control of annual grasses. Preemergence herbicides include the very-long-chain fatty acid synthesis (VLCFA) inhibitors, such as flufenacet, pyroxasulfone or their premix with other herbicides while early postemergence herbicides include (1) acetyl CoA carboxylase (ACCase) inhibitors, such as diclofop, pinoxaden, and (2) acetolactate synthase (ALS) inhibitors, such as flucarbazone, pyroxsulam, mesosulfuron. However, selection pressure from consistent herbicide use resulted in annual grasses evolving resistant populations to multiple groups of herbicides, leaving growers with few herbicide options for control. The very-long-chain fatty acid-inhibiting herbicides are effective herbicides for control of annual grasses and small-seeded broadleaf weeds in corn, soybeans, wheat, cotton and sorghum with few reported cases of resistance. Pyroxasulfone, a VLCFA inhibitor, controls annual grass and small-seeded broadleaf weeds such as Italian ryegrass, barnyardgrass, foxtails, crabgrasses, Palmer amaranth and common waterhemp in corn, wheat and soybeans at low use rate with efficacy also against populations resistant to glyphosate, acetolactate synthase inhibitors, acetyl CoA carboxylase inhibitors and triazines. Despite the use of several VLCFA inhibitors for over six decades, potential problem associated with herbicides in the group is crop injury. Differential tolerance of crop varieties under adverse environmental conditions or soil type could hinder the selective use of some herbicides. Herbicide safeners, applied either as tank mixture with the herbicide for preemergence or postemergence use or as seed treatments in the form of seed dressing have been used to protect crops from herbicide injury. Safeners increase the expression of genes encoding enzymes involved in herbicide detoxification including cytochrome P450 monooxygenases, glycosyltransferases, glutathione S-transferases and ATP-binding cassette transporters. Fluxofenim (Concep III, Syngenta Crop Protection, LLC, Greensboro, NC) is a widely used seed treatment safener for protection of sorghum from S-metolachlor injury at the rate of 0.4 g ai kg-1 seed. Perhaps, fluxofenim could protect newly bred wheat cultivars of the Pacific Northwest from soil-applied preemergence herbicides. Chapter 1 includes a general introduction to wheat production in Idaho, challenges of annual grass control in wheat, herbicide options for annual grass control in wheat, effectiveness of very-long-chain fatty acid-inhibiting herbicides in annual grass control, tolerance of crops to VLCFA inhibitors via rapid metabolism, concept of crop safening, history, mechanism of action and use. Chapter 2 provides information on series of experiments evaluating the protection of soft white wheat varieties and a hard spring wheat variety from very-long-chain fatty acid-inhibiting herbicides using fluxofenim safener. Data analysis showed that fluxofenim protection of soft white wheat varieties from VLCFA-inhibiting herbicides was variety-dependent. Fluxofenim significantly increased dry biomass of varieties LWW 15-72223, LWW 14-75044, Bruneau and UI Sparrow for S-metolachlor and dimethenamid-P herbicides, and LWW 15-72458 for pyroxasulfone herbicide. Varieties 09-15702A, UI Castle CL+ and UI Palouse CL+ were however tolerant to the three herbicide treatments regardless of fluxofenim treatment at the herbicide rates evaluated. Dose-response analysis showed effective doses resulting in 10% biomass reduction due to fluxofenim-alone treatment ranged from 0.55 g ai kg-1 seed for UI Magic CL+ to 1.23 g ai kg-1 seed for UI Palouse CL+. Effective doses resulting in 90% tolerance to S-metolachlor due to fluxofenim ranged from 0.07 g ai kg-1 seed for UI Castle CL+ to 0.55 g ai kg-1 seed for Brundage 96 and a similar pattern of response to dimethenamid-P and pyroxasulfone herbicides were also observed for the varieties, suggesting UI Castle CL+ has some level of tolerance to the herbicides. Glutathione S-transferase (GST) assay revealed that variety UI Castle CL+ had a 58% increase in GST specific activity relative to UI Sparrow and Brundage 96 with 30% and 38% increase in enzyme activity respectively at 0.36 g ai kg-1 seed treatment. Chapter 3 describes experiments to determine fluxofenim protection of six soft white winter wheat varieties selected based on prior greenhouse experiments from S-metolachlor, dimethenamid-P or pyroxasulfone injury under field conditions. Wheat density, height, head count and grain yield were evaluated in response to herbicide treatments with or without fluxofenim safener. Results indicated that fluxofenim had a negative impact on parameters observed in these field studies. Fluxofenim at 0.4 g ai kg-1 seed sorghum label rate failed to confer protection to soft white wheat varieties in the field studies conducted in fall 2018. The results of these field studies were therefore inconclusive and efficacy of fluxofenim to protect winter wheat would need to be evaluated further under different environmental conditions and soil types.
Download or read book Studies on the Application of Smome Pre and Post Emergence Herbicides for Weed Control in Wheat Triticum Aestivum L and Their Effect on Crop Growth and Yield written by E. Chennakesavulu and published by . This book was released on 1970 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efficacy of Herbicide Mixture to Control Mixed Weed Flora in Direct Seeded Upland and Puddled sprouted Rice written by Shashi Paul Attri and published by . This book was released on 2000 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioefficacy of Clodinafop and Various Herbicide Mixtures for Weed Controlin Wheat Triticum Aestivum L written by Mayank Raj Yadav and published by . This book was released on 2004 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Chlorsulfuron for Weed Control in Winter Wheat Triticum Aestivum L and Its Effect on Subsequent Recropping with Soybeans Glycine Max L Merr Or Grain Sorghum Sorghum Bicolor L Moench written by Michael Scott Leetch and published by . This book was released on 1985 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Herbicide Resistance in Weeds and Crops written by J. C. Caseley and published by Elsevier. This book was released on 2013-10-22 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Herbicide Resistance in Weeds and Crops is a collection of papers presented at the 11th Long Ashton International Symposium in September 1989. The said symposium is held to study about the increasing incidence of herbicide-resistant weeds and the consideration of the production of herbicide-resistant crops. The book includes studies that suggest the delay and prevention of herbicide resistance; the gravity of the infestation of different herbicide-resistant weed; the management of herbicide resistance; and the mechanisms of herbicide tolerance. Also covered in the book are the improvement of different herbicides, as well as the prospective development of genetically engineered herbicide-resistant plants. Botanists, biochemists, and farmers would greatly benefit from the text, especially those who would like to explore and study the phenomenon.
Download or read book Non Chemical Weed Control written by Khawar Jabran and published by Academic Press. This book was released on 2018-01-03 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-Chemical Weed Control is the first book to present an overview of plant crop protection against non-food plants using non-chemical means. Plants growing wild—particularly unwanted plants found in cultivated ground to the exclusion of the desired crop—have been treated with herbicides and chemical treatments in the past. As concern over environmental, food and consumer safety increases, research has turned to alternatives, including the use of cover crops, thermal treatments and biotechnology to reduce and eliminate unwanted plants. This book provides insight into existing and emerging alternative crop protection methods and includes lessons learned from past methodologies. As crop production resources decline while consumer concerns over safety increase, the effective control of weeds is imperative to insure the maximum possible levels of soil, sunlight and nutrients reach the crop plants. - Allows reader to identify the most appropriate solution based on their individual use or case - Provides researchers, students and growers with current concepts regarding the use of modern, environment-friendly weed control techniques - Presents methods of weed management—an important part of integrated weed management in the future - Exploits the knowledge gained from past sustainable weed management efforts
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.
Download or read book Weed and Crop Resistance to Herbicides written by Rafael de Prado and published by Springer Science & Business Media. This book was released on 1997-05-31 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, repeated use of herbicides in the same field has imposed selection for resistance in species that were formerly susceptible. On the other hand, considerable research in the private and public sectors has been directed towards introducing herbicide tolerance into susceptible crop species. The evolution of herbicide resistance, understanding its mechanisms, characterisation of resistant weed biotypes, development of herbicide-tolerant crops and management of resistant weeds are described throughout the 36 chapters of this book. It has been written by leading researchers based on the contributions made at the International Symposium on Weed and Crop Resistance to Herbicides held at Córdoba, Spain. This book will be a good reference source for research scientists and advanced students.
Download or read book Principles of Weed Science written by Rao V S. and published by . This book was released on 2000 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
