Impact Of Foliar Diseases On Soybean In Ohio

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Impact of Foliar Diseases on Soybean in Ohio

Author : Christian D. Cruz
Publisher :
ISBN 13 :
Total Pages : 107 pages
Book Rating : 4.:/5 (289 download)

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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.

The Effect of Mid-season Foliar Fungicide and Insecticide, Applied Alone Or in Combination, on Soybean Yield in Ohio

Author : Sin Joe Ng
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (1 download)

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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

Characterizing the Effect of Increased Phosphorus and Potassium on Seedling Diseases and Sudden Death Syndrome of Soybean in Ohio

Author : Meredith Milo Eyre
Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (97 download)

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Book Synopsis Characterizing the Effect of Increased Phosphorus and Potassium on Seedling Diseases and Sudden Death Syndrome of Soybean in Ohio by : Meredith Milo Eyre

Download or read book Characterizing the Effect of Increased Phosphorus and Potassium on Seedling Diseases and Sudden Death Syndrome of Soybean in Ohio written by Meredith Milo Eyre and published by . This book was released on 2016 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil fertility may affect the development of soybean diseases, including those caused by soil borne pathogens. Though increased phosphorus and potassium levels have the potential to enhance crop productivity and profitability, secondary effects on pathogens may prove detrimental to overall plant health. Fertility recommendations serve to define optimum levels and require periodic revision to balance nutrient demands of modern cultivars and economic yield response with the associated increases in production costs, environmental considerations, and potential disease development. Fertility recommendations for soybean in the Tri-State area of Ohio, Michigan, and Indiana have not been updated in over 20 years, despite dramatic yield increases and other changes in the industry. As part of a larger collaboration working to re-evaluate current recommendations, this study assessed the effects of higher than recommended rates of phosphorus and potassium on seedling disease and sudden death syndrome disease (SDS) development in soybean through both field and greenhouse trials. Treatments above the recommended rates in the form of 112 kg/ha diammonium phosphate (DAP), 112 kg/ha potash, 112 kg/ha DAP and 112 kg/ha potash, and a nontreated control were applied to 5 field sites with seedling disease history and no differences in stand nor yield occurred. However, a significantly higher number of plants affected by damping-off was observed in plots treated with potassium than the other treatments at one location (p= 0.041). Furthermore, a trend occurred in two intensively surveyed fields in that higher than recommended rates of phosphorus, potassium, and phosphorus plus potassium seemed to increase the number of oomycetes, as more isolates were recovered from plots that had been treated with fertilizer than the nontreated control. More than 15 different oomycete species were recovered from both fields. In greenhouse assays, lower root weights occurred in plants which received fertilizer in 2 of 3 greenhouse trials. When the same treatments were applied to field soils naturally infested with Fusarium virguliforme, the addition of phosphorus and potassium applied separately significantly reduced SDS disease index at one of two locations (p= 0.052). The significant difference detected at this site may be due to lower baseline potassium levels and higher soybean cyst nematode (SCN) counts. Furthermore, in the presence of SCN and SDS, phosphorus and phosphorus plus potassium applied at levels higher than currently recommended enhanced yields, suggesting these additions may decrease disease pressure or compensate for the biotic stress. Clear trends were not observed in greenhouse trials with SDS infested soil amended with any of the fertility treatments. These trends are worth further investigation in continued field trials and greenhouse trials modified to use inoculated soil with fertility applied incrementally under consistent conditions. Future field studies which examine the effects of higher fertility on SDS should prioritize fields with low base levels of potassium and high SCN counts, as preliminary work suggests applying phosphorus and potassium at rates higher than currently recommended may enhance yield under these conditions.

Foliar Fungicide Effects on Gray Leaf Spot and Yield of Hybrid Corn as Influenced by Application Timing, Hybrid Characteristics and Production Practices

Download Foliar Fungicide Effects on Gray Leaf Spot and Yield of Hybrid Corn as Influenced by Application Timing, Hybrid Characteristics and Production Practices PDF Online Free

Author : Matthew W. Wallhead
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (784 download)

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Book Synopsis Foliar Fungicide Effects on Gray Leaf Spot and Yield of Hybrid Corn as Influenced by Application Timing, Hybrid Characteristics and Production Practices by : Matthew W. Wallhead

Download or read book Foliar Fungicide Effects on Gray Leaf Spot and Yield of Hybrid Corn as Influenced by Application Timing, Hybrid Characteristics and Production Practices written by Matthew W. Wallhead and published by . This book was released on 2012 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Ohio ranks 9th among leading U.S. corn-producing states in total grain corn acreage. The corn crop adds an estimated $3 billion to Ohio's economy each year. Since the 1980s and 1990s when gray leaf spot, caused by Cercospora zeae-maydis, provoked widespread yield and economic losses in Ohio, foliar diseases have only been a concern in localized areas of the state. In most years, producers effectively manage foliar diseases by practicing some form of crop residue management, rotating corn with soybean, and planting resistant hybrids. However, without a major corn disease epidemic in more than a decade, the focus has shifted away from production practices geared to minimized disease-related losses. Since 2006, growers across the Corn Belt have been investing heavily in fungicide application. This is due in part to recent corn prices and the potential for greater disease development in a continuous-corn conservation-tillage cropping system, but most importantly, to industry claims of substantial yield increases due to the use of foliar fungicide, particularly the Quinone Outside Inhibitors (QoI). In Ohio, more than 650,000 hectares acres of corn were sprayed with fungicide during 2007. At an estimated application cost of $57 per hectare, this represented a total expenditure on fungicide of $37 M. Based on grain prices in that year, it would have required an estimated 375-501 kg/ha increase in yield to offset the cost of fungicide application. Results from university-based replicated trials suggest that the effect of fungicide application on yield is less clear-cut than industry data seem to suggest. In some university trials, positive yield responses were associated with disease control, in others there were no yield benefits even when diseases were controlled, yet in other trials positive yield responses were observed in the absence of high disease pressure. Since production practices have changed substantially since the available disease management recommendations were developed, there is a need to revisit these recommendations and develop sustainable management guidelines suitable for current production systems. Hence the objectives of the research presented in this thesis were to: investigate the effects of hybrid gray leaf spot resistance and yield potential, and fungicide application (product and timing) on the development of gray leaf spot and grain yield and yield components in a minimum-till/continuous-corn and a corn-soybean rotation cropping systems.

Compendium of Soybean Diseases and Pests

Author :
Publisher :
ISBN 13 : 9780890544730
Total Pages : pages
Book Rating : 4.5/5 (447 download)

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Book Synopsis Compendium of Soybean Diseases and Pests by :

Download or read book Compendium of Soybean Diseases and Pests written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Managing Cover Crops Profitably (3rd Ed. )

Author : Andy Clark
Publisher : DIANE Publishing
ISBN 13 : 1437903797
Total Pages : 248 pages
Book Rating : 4.4/5 (379 download)

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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.

Rhizoctonia Species: Taxonomy, Molecular Biology, Ecology, Pathology and Disease Control

Author : B. Sneh
Publisher : Springer Science & Business Media
ISBN 13 : 9401729018
Total Pages : 561 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis Rhizoctonia Species: Taxonomy, Molecular Biology, Ecology, Pathology and Disease Control by : B. Sneh

Download or read book Rhizoctonia Species: Taxonomy, Molecular Biology, Ecology, Pathology and Disease Control written by B. Sneh and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhizoctonia Species: Taxonomy, Molecular Biology, Ecology, Pathology and Control, written by the world's most reputable experts in their respective fields of Rhizoctonia research, summarizes years of research in the various aspects of the ubiquitous complex group of soil-borne fungi belonging to the anamorph genus Rhizoctonia. Species of Rhizoctonia worldwide cause economically important diseases on most of the world's important plants such as cereals, potato, cotton, sugarbeet, vegetables, ornamentals and trees in nurseries. The subject reviews covered in the book include classic as well as modern approaches to Rhizoctonia research in: Taxonomy and Evolution, Genetics and Pathogenicity, Plant-Rhizoctonia Interactions, Ecology, Population and Disease Dynamics, Disease Occurrence and Management in Various Crops, Cultural Control, Biological Control, Germplasm for Resistance, Chemical and Integrated Control Strategies. It aims to be the standard reference source book on Rhizoctonia for the next decade or more, just as Parmeter et al. (1970) has been in the past. It will be an important publication for Rhizoctonia investigators, plant pathologists, students, extension specialists, crop producers and companies dealing with plant disease control.

Fungicides for Field Crops

Author : Daren Mueller
Publisher :
ISBN 13 : 9780890545065
Total Pages : 112 pages
Book Rating : 4.5/5 (45 download)

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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.

The Handbook of Plant Biosecurity

Author : Gordon Gordh
Publisher : Springer Science & Business Media
ISBN 13 : 940077365X
Total Pages : 729 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis The Handbook of Plant Biosecurity by : Gordon Gordh

Download or read book The Handbook of Plant Biosecurity written by Gordon Gordh and published by Springer Science & Business Media. This book was released on 2013-11-19 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook identifies all aspects of Regulatory Plant Biosecurity and discusses them from the standpoint of preventing the international movement of plant pests, diseases and weeds that negatively impact production agriculture, natural plant-resources and agricultural commerce.

History of Soybean Plant Protection from Diseases, Insects, Nematodes and Weeds (15 BCE to 2019):

Author : William Shurtleff
Publisher : Soyinfo Center
ISBN 13 : 1948436086
Total Pages : 1397 pages
Book Rating : 4.9/5 (484 download)

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Book Synopsis History of Soybean Plant Protection from Diseases, Insects, Nematodes and Weeds (15 BCE to 2019): by : William Shurtleff

Download or read book History of Soybean Plant Protection from Diseases, Insects, Nematodes and Weeds (15 BCE to 2019): written by William Shurtleff and published by Soyinfo Center. This book was released on 2019-04-27 with total page 1397 pages. Available in PDF, EPUB and Kindle. Book excerpt:

21st Century Guidebook to Fungi with CD

Author : David Moore
Publisher : Cambridge University Press
ISBN 13 : 1107006767
Total Pages : 705 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis 21st Century Guidebook to Fungi with CD by : David Moore

Download or read book 21st Century Guidebook to Fungi with CD written by David Moore and published by Cambridge University Press. This book was released on 2011-07-14 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uniquely modern textbook providing a broad, all-round understanding of fungal biology and the biological systems to which fungi contribute.

Mycosphaerella and Its Anamorphs

Author : Pedro W. Crous
Publisher :
ISBN 13 :
Total Pages : 592 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Mycosphaerella and Its Anamorphs by : Pedro W. Crous

Download or read book Mycosphaerella and Its Anamorphs written by Pedro W. Crous and published by . This book was released on 2003 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a compilation of more than 3000 names that have been published or proposed in Cercospora, of which 659 are presently recognised in this genus, with a further 281 being referred to C. apii s.lat. Approximately 550 names of Passalora emend. (incl. Mycovellosiella, Phaeoramularia, Tandonella and Phaeoisariopsis p.p.) are treated in a second list. In total 5720 names are treated. 553 taxonomic novelties are proposed.

The Plant Disease Reporter

Author :
Publisher :
ISBN 13 :
Total Pages : 614 pages
Book Rating : 4.:/5 ( download)

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Book Synopsis The Plant Disease Reporter by :

Download or read book The Plant Disease Reporter written by and published by . This book was released on 1979-07 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cooperative Plant Pest Report

Author :
Publisher :
ISBN 13 :
Total Pages : 514 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Cooperative Plant Pest Report by :

Download or read book Cooperative Plant Pest Report written by and published by . This book was released on 1978-07 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cooperative Plant Pest Report

Author : United States. Animal and Plant Health Inspection Service
Publisher :
ISBN 13 :
Total Pages : 968 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Cooperative Plant Pest Report by : United States. Animal and Plant Health Inspection Service

Download or read book Cooperative Plant Pest Report written by United States. Animal and Plant Health Inspection Service and published by . This book was released on 1978 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances in breeding for quantitative disease resistance

Author : Valerio Hoyos-Villegas
Publisher : Frontiers Media SA
ISBN 13 : 288976091X
Total Pages : 394 pages
Book Rating : 4.8/5 (897 download)

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Book Synopsis Advances in breeding for quantitative disease resistance by : Valerio Hoyos-Villegas

Download or read book Advances in breeding for quantitative disease resistance written by Valerio Hoyos-Villegas and published by Frontiers Media SA. This book was released on 2023-02-28 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Genetic Mapping in Experimental Populations

Author : J. W. Van Ooijen
Publisher : Cambridge University Press
ISBN 13 : 1107013216
Total Pages : 171 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Genetic Mapping in Experimental Populations by : J. W. Van Ooijen

Download or read book Genetic Mapping in Experimental Populations written by J. W. Van Ooijen and published by Cambridge University Press. This book was released on 2013-08-08 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise introduction to genetic linkage map construction for biological researchers, combining theory with practical exercises and problem-solving tips.