Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
The Effect Of Mid Season Foliar Fungicide And Insecticide Applied Alone Or In Combination On Soybean Yield In Ohio
Download The Effect Of Mid Season Foliar Fungicide And Insecticide Applied Alone Or In Combination On Soybean Yield In Ohio full books in PDF, epub, and Kindle. Read online The Effect Of Mid Season Foliar Fungicide And Insecticide Applied Alone Or In Combination On Soybean Yield In Ohio ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis The Effect of Mid-season Foliar Fungicide and Insecticide, Applied Alone Or in Combination, on Soybean Yield in Ohio by : Sin Joe Ng
Download or read book The Effect of Mid-season Foliar Fungicide and Insecticide, Applied Alone Or in Combination, on Soybean Yield in Ohio written by Sin Joe Ng and published by . This book was released on 2017 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ohio soybean farmers are very concerned about disease and insect pressure during the midseason that may impact yield. The impact of mid-season management for foliar diseases and insect feeding on grain yield was studied in a series of field experiments. The first objective was to evaluate the effect of mid-season foliar fungicide and insecticide application on soybean yield, applied alone or in combination. A trial was established at 12 on-farm field site-years in Ohio during 2015 and 2016 in a randomized complete block design with four replications per treatment. Fungicide and insecticide treatments included: 1) nontreated control, 2) fungicide alone, 3) insecticide alone, 4) fungicide plus insecticide (tank-mixed), 5) fungicide and insecticide (separate tank), 6) fungicide plus crop oil, 7) insecticide plus crop oil, 8) fungicide, insecticide plus crop oil (tank-mixed). All treatments were applied at R3 growth stage (initial pod development), and data on the percent leaf area affected by foliar diseases and insect defoliation was collected. There was no significant yield response associated with insecticide application due to low insect pressure and low insect defoliation levels at the time of insecticide application at all 12 site-years. However, at the end of the growing season, the number of bean leaf beetles (2-22) and pod injury caused by their feeding (4.1-37%) were high at 4 out of 12 site-years. Fungicide application alone had significantly (P
Book Synopsis Impact of Foliar Diseases on Soybean in Ohio by : Christian D. Cruz
Download or read book Impact of Foliar Diseases on Soybean in Ohio written by Christian D. Cruz and published by . This book was released on 2008 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: One of the most common foliar diseases of soybeans in Ohio is Septoria brown spot, caused by Septoria glycines Hemmi. The economic impact caused by Septoria brown spot has not been documented in this State, but the disease has been developing earlier in the season. In contrast, during 2006 frogeye leaf spot caused on average 35% yield loss across 500,000 acres in Ohio. While frogeye leaf spot, caused by Cercospora sojina Hara, is common in the southern U.S., no documented losses have occurred previously in Ohio. In the last three years there has been a strong pressure by industry to increase fungicide applications for a perceived "plant health" benefit. Therefore, the objectives of this study were i) to determine the yield losses associated with S. glycines on soybean, and ii) to determine the cause(s) of the increase in prevalence of C. sojina in Ohio. The yield loss associated with S. glycines was determined with two approaches: weekly applications of chlorothalonil and timed applications of pyraclostrobin, tebuconazole, and flutriafol. Both of these approaches allowed for different levels of Septoria brown spot to develop. The ability of C. sojina to overwinter and the prevalence of seed transmission were both evaluated to determine what was the source of primary inoculum. In addition, a collection of C. sojina isolates from Ohio was compared to isolates from the southern U.S. to determine if there was a shift in temperature growth curves which would have favor infections of C. sojina during the growing season in the northern U.S. This same isolate collection was also used to determine if the Rcs3 gene was effective against Ohio's C. sojina population. From this three-year study it was concluded that brown spot in Ohio does contribute to reductions in yield, albeit at 196 to 293 kg/ha. Strobilurin fungicides alone or in combination with a triazole, reduced the severity of brown spot, but did not maintain the yield potential of plants grown under conditions of water stress. However, this family of fungicides may increase soybean yields under certain conditions. In addition, it is important to consider the net return in order to determine if producers have a real benefit or only an extra expense. The use of a highly susceptible cultivar widely planted during 2006, and warmer winter temperatures were both the cause of the increase in prevalence of C. sojina during the previous two years in Ohio. If winter indices continue to increase, then these conditions will enhance survival of this and other plant pathogens that did not previously overwinter at these latitudes.
Book Synopsis The Effect of Fungicides on Soybean in Iowa Applied Alone Or in Combination with Insecticides at Two Application Growth Stages on Disease Severity and Yield by : Nathan Robert Charles Bestor
Download or read book The Effect of Fungicides on Soybean in Iowa Applied Alone Or in Combination with Insecticides at Two Application Growth Stages on Disease Severity and Yield written by Nathan Robert Charles Bestor and published by . This book was released on 2011 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact of Foliar Fungicides on Yield and Net Returns in Soybeans by :
Download or read book Impact of Foliar Fungicides on Yield and Net Returns in Soybeans written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Field studies were conducted in 2003, 2004, and 2005 in the Mississippi delta at 12 locations across common production practices to evaluate the impact of 12 single applications of fungicides at the R3 and R5 growth stage on soybean yield, seed quality, and net returns. Averaged across locations, azoxystrobin alone and mixed with other fungicides increased yields 161 to 343 kg/ha compared to the nontreated control. Fungicide applications made at R3-R4 were more efficacious and resulted in larger yield increases than applications made at R5-R6. Plots treated at the R3-R4 growth stage with 0.11kg ai/ha azoxystrobin alone or in combination with other fungicides yielded 135 kg/ha more than plots treated with the same treatments at the R5-R6 growth stage. Azoxystrobin at 0.11 kg ai/ha and azoxystrobin at 0.11 kg ai/ha + 0.035 kg ai/ha diflubenzuron were the most profitable treatments and increased net returns $23/ha and $31/ha, respectively compared to the nontreated control.
Book Synopsis Impact of Foliar Fungicides on Yield and Net Returns in Soybeans by : Benjamin Lee Spinks
Download or read book Impact of Foliar Fungicides on Yield and Net Returns in Soybeans written by Benjamin Lee Spinks and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Field studies were conducted in 2003, 2004, and 2005 in the Mississippi delta at 12 locations across common production practices to evaluate the impact of 12 single applications of fungicides at the R3 and R5 growth stage on soybean yield, seed quality, and net returns. Averaged across locations, azoxystrobin alone and mixed with other fungicides increased yields 161 to 343 kg/ha compared to the nontreated control. Fungicide applications made at R3-R4 were more efficacious and resulted in larger yield increases than applications made at R5-R6. Plots treated at the R3-R4 growth stage with 0.11kg ai/ha azoxystrobin alone or in combination with other fungicides yielded 135 kg/ha more than plots treated with the same treatments at the R5-R6 growth stage. Azoxystrobin at 0.11 kg ai/ha and azoxystrobin at 0.11 kg ai/ha + 0.035 kg ai/ha diflubenzuron were the most profitable treatments and increased net returns 23 dollars/ha and 31 dollars/ha, respectively compared to the nontreated control.
Book Synopsis Soybean Yield Response in High and Low Input Production Systems by : Grace Mariah Bluck
Download or read book Soybean Yield Response in High and Low Input Production Systems written by Grace Mariah Bluck and published by . This book was released on 2015 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 2000 to 2013 soybean [Glycine max (L.) Merr] grain commodity price has increased by almost 300% generating interest in agricultural inputs to maximize soybean yield. The objective of this study was to evaluate the effect of common inputs on soybean grain yield in enhanced (high-input) and traditional (low-input) production systems. The inputs evaluated included: Rhizobia inoculant, gypsum, pyraclostrobin fungicide, lambda-cyhalothrin insecticide, and manganese (Mn) foliar fertilizer. A sixteen site-year trial was established in Ohio during 2013 and 2014. Rhizobia inoculant was seed applied before planting, gypsum was applied at the VC growth stage (unrolled unifoliate leaves), and fungicide, insecticide, and Mn foliar fertilizer were applied at the R3 growth stage (initial pod development). Measurements of percent leaf area affected by foliar disease and insect defoliation and Mn and sulfur (S) concentration in leaves were collected at six site-years. The omission of pyraclostrobin from the enhanced production system significantly reduced yield in five of sixteen site-years by 0.21 to 0.79 Mg ha-1, but its addition to a traditional system increased yield significantly at only one of sixteen site-years by 0.47 Mg ha-1 Soybean yield was influenced by fungicide application when fields had disease present, above average yield (>3.5 Mg ha-1), and received >25 cm of precipitation in June and July. During 2013 and 2014, with established corn/soybean rotations, no S or Mn deficiencies, and minimal insect pressure, there were limited effects of inoculant, gypsum, insecticide, and Mn foliar fertilizer on grain yield. The data indicate a very small potential for high-input production systems to enhance crop yield without the presence of diseases, insects, or nutrient deficiencies. Knowledge of potential yield limiting factors is useful in identifying inputs that will increase soybean yield on a field by field basis.
Book Synopsis Influence of Application Technology on Foliar Fungicide Efficacy on Cercospora Sojina Infected Soybean by : Shawn Alan Butler
Download or read book Influence of Application Technology on Foliar Fungicide Efficacy on Cercospora Sojina Infected Soybean written by Shawn Alan Butler and published by . This book was released on 2016 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the constant concern with off-target contamination and application technology requirements associated with future herbicide-tolerant crops, the use of drift-reduction nozzle technology (DRT) may increase. The primary objective of this research was to evaluate the effects of coarse droplets generated by drift-reduction nozzles on foliar fungicide efficacy and residual in soybean infected by frogeye leaf spot caused by Cercospora sojina. No differences in disease control, soybean yield, spray retention, and residual when applying Quadris Top SB, a premix of azoxystrobin and difenoconazole, using nozzles that produce either a medium or ultra coarse droplet spectrum were determined. Due to the challenge of timing fungicide applications targeting frogeye leaf spot infections, growers often make applications preventatively, prior to visual infection. Therefore, the second objective was to determine the EC50 of C. sojina isolates collected from trial locations to further investigate the residual control window of azoxystrobin. The effective concentration in which 50% of mycelial growth of resistant isolates tested were inhibited was determined to be 7.44638 [mu]g mL−1 , while the concentration for sensitive isolates was found to be 0.04789 [mu]g mL−1 . The third objective was to determine the effect of droplet size on plant coverage and canopy penetration when making fungicide applications in a commercial setting with increased potential for off-target movement. These studies showed no differences between nozzles producing either medium or ultra coarse droplet spectra when considering frogeye leaf spot control or soybean yield with an application of Quadris Top SB. Coverage analyses determined that applications made with ground self-propelled sprayers deposited 43% more solution in the upper canopy than the lower canopy, but was not effected by droplet spectra. These results indicate that DRT nozzle technology will not have a negative impact on frogeye leaf spot disease control or soybean yield when applying Quadris Top SB. Further studies should be conducted to determine the impact of DRT on other diseases of soybean or alternate crops.
Book Synopsis Insect Resistance Management by : David W. Onstad
Download or read book Insect Resistance Management written by David W. Onstad and published by Academic Press. This book was released on 2013-10-08 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neither pest management nor resistance management can occur with only an understanding of pest biology. For years, entomologists have understood, with their use of economic thresholds, that at least a minimal use of economics was necessary for proper integrated pest management. IRM is even more complicated and dependent on understanding and using socioeconomic factors. The new edition of Insect Resistance Management addresses these issues and much more. Many new ideas, facts and case studies have been developed since the previous edition of Insect Resistance Management published. With a new chapter focusing on Resistance Mechanisms Related to Plant-incorporated Toxins and heavily expanded revisions of several existing chapters, this new volume will be an invaluable resource for IRM researchers, practitioners, professors and advanced students. Authors in this edition include professors at major universities, leaders in the chemical and seed industry, evolutionary biologists and active IRM practitioners. This revision also contains more information about IRM outside North America, and a modeling chapter contains a large new section on uncertainty analysis, a subject recently emphasized by the U.S. Environmental Protection Agency. The final chapter contains a section on insecticidal seed treatments. No other book has the breadth of coverage of Insect Resistance Management, 2e. It not only covers molecular to economic issues, but also transgenic crops, seed treatments and other pest management tactics such as crop rotation. Major themes continuing from the first edition include the importance of using IRM in the integrated pest management paradigm, the need to study and account for pest behavior, and the influence of human behavior and decision making in IRM. Provides insights from the history of insect resistance management (IRM) to the latest science Includes contributions from experts on ecological aspects of IRM, molecular and population genetics, economics, and IRM social issues Offers biochemistry and molecular genetics of insecticides presented with an emphasis on recent research Encourages scientists and stakeholders to implement and coordinate strategies based on local social conditions
Download or read book Agronomy Abstracts written by and published by . This book was released on 1995 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).
Book Synopsis Fungicides for Field Crops by : Daren Mueller
Download or read book Fungicides for Field Crops written by Daren Mueller and published by . This book was released on 2013 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fungicides for Field Crops provides an overview of the current knowledge of fungicides and their use on field crops. This comprehensive book, which includes the contributions of 40 professionals from 20 universities and other organizations, combines past knowledge about fungicides with recent developments in the realm of field crop fungicides. Fungicides for Field Crops highlights the use of fungicides as key tools in the management of important diseases of field crops. Management is presented as a decision-making process--one in which factors as diverse as weather conditions and economics must be considered. Having a more complete understanding of fungicides will inform that decision making and help determine when fungicides should be included as part of a management plan. Parts I, II, and III establish a foundation of knowledge about fungicide use, addressing basic terms and concepts, key factors in decision making, and concerns for fungicide stewardship, respectively. Part IV presents details about using fungicides to manage diseases of 16 field crops. Each crop is treated in a separate section that begins with a discussion of general issues of foliar application and seed treatment and ends with an inclusive table identifying diseases of that crop, including what causes them and how fungicides may be used to treat them. 131 color photographs illustrate disease symptoms and show techniques and enhance the key concepts described in the text.
Book Synopsis DDT by : United States. Environmental Protection Agency
Download or read book DDT written by United States. Environmental Protection Agency and published by . This book was released on 1975 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Cover Crops Profitably (3rd Ed. ) by : Andy Clark
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.
Book Synopsis Handbook of Sampling Methods for Arthropods in Agriculture by : Larry P. Pedigo
Download or read book Handbook of Sampling Methods for Arthropods in Agriculture written by Larry P. Pedigo and published by CRC Press. This book was released on 2020-08-26 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Sampling Methods for Arthropods in Agriculture offers a comprehensive look at the principles and practicality of developing accurate sampling programs for arthropod pests and their arthropod enemies. The book examines developments in sampling populations and reviews sampling plans that produce accurate and affordable population estimates. The text stresses practicality, as well as the theoretical background of sampling. This book will be an indispensable reference for researchers, students, and practitioners in entomology and agriculture.
Book Synopsis Machine Learning for Ecology and Sustainable Natural Resource Management by : Grant Humphries
Download or read book Machine Learning for Ecology and Sustainable Natural Resource Management written by Grant Humphries and published by Springer. This book was released on 2018-11-05 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecologists and natural resource managers are charged with making complex management decisions in the face of a rapidly changing environment resulting from climate change, energy development, urban sprawl, invasive species and globalization. Advances in Geographic Information System (GIS) technology, digitization, online data availability, historic legacy datasets, remote sensors and the ability to collect data on animal movements via satellite and GPS have given rise to large, highly complex datasets. These datasets could be utilized for making critical management decisions, but are often “messy” and difficult to interpret. Basic artificial intelligence algorithms (i.e., machine learning) are powerful tools that are shaping the world and must be taken advantage of in the life sciences. In ecology, machine learning algorithms are critical to helping resource managers synthesize information to better understand complex ecological systems. Machine Learning has a wide variety of powerful applications, with three general uses that are of particular interest to ecologists: (1) data exploration to gain system knowledge and generate new hypotheses, (2) predicting ecological patterns in space and time, and (3) pattern recognition for ecological sampling. Machine learning can be used to make predictive assessments even when relationships between variables are poorly understood. When traditional techniques fail to capture the relationship between variables, effective use of machine learning can unearth and capture previously unattainable insights into an ecosystem's complexity. Currently, many ecologists do not utilize machine learning as a part of the scientific process. This volume highlights how machine learning techniques can complement the traditional methodologies currently applied in this field.
Book Synopsis Pesticide Use in U.S. Agriculture by : Jorge Fernandez-Cornejo
Download or read book Pesticide Use in U.S. Agriculture written by Jorge Fernandez-Cornejo and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pesticide use has changed considerably over the past five decades. Rapid growth characterized the first 20 years, ending in 1981. The total quantity of pesticides applied to the 21 crops analyzed grew from 196 million pounds of pesticide active ingredients in 1960 to 632 million pounds in 1981. Improvements in the types and modes of action of active ingredients applied along with small annual fluctuations resulted in a slight downward trend in pesticide use to 516 million pounds in 2008. These changes were driven by economic factors that determined crop and input prices and were influenced by pest pressures, environmental and weather conditions, crop acreages, agricultural practices (including adoption of genetically engineered crops), access to land-grant extension personnel and crop consultants, the cost-effectiveness of pesticides and other practices in protecting crop yields and quality, technological innovations in pest management systems/practices, and environmental and health regulations. Emerging pest management policy issues include the development of glyphosate-resistant weed populations associated with the large increase in glyphosate use since the late 1990s, the development of Bt-resistant western corn rootworm in some areas, and the arrival of invasive or exotic pest species, such as soybean aphid and soybean rust, which can influence pesticide use patterns and the development of Integrated Pest Management programs.
Download or read book Managing the Japanese Beetle written by and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Union Agriculturist and Western Prairie Farmer by :
Download or read book Union Agriculturist and Western Prairie Farmer written by and published by . This book was released on 2006 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
