Download or read book Effect of Planting Date and Climatic Factors on Soybean Sudden Death Syndrome Response in Cultivars of Different Maturities written by Rafael Abel dos Santos Massinga and published by . This book was released on 1996 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Soybean Planting Dates and Various Cultivars of Differing Maturity Groups on the Incidence and Severity of Sudden Death Syndrome written by Salem Safer Hamoud Alghamdi and published by . This book was released on 1991 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Planting Date and Cultivar Maturity on Sudden Death Syndrome of Soybean written by Stephen Karanja Kiarie and published by . This book was released on 1989 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Planting Date and Tillage Method on Soybean Varieties from Four Maturity Groups written by Carl H. Hovermale and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Row Spacing and Planting Date Effect on Yield and Growth Responses of Soybeans written by D. J. Boquet and published by . This book was released on 1983 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Date of Planting and Row Spacing on Yield and Other Agronomic Characters of Four Soybean Glycine Max L Varieties of Different Maturity Classification written by Jack W. King (Jr.) and published by . This book was released on 1975 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Soil applied Herbicide and Pathogen Interaction on Upregulation of Systemic Acquired Resistance in Soybean written by Rhett Stolte and published by . This book was released on 2019 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposure of crop plants to stress or injury, such as soybean injury by PPO-inhibitor herbicide, may stimulate the upregulation of Systemic Acquired Resistance (SAR) and reduce plant susceptibility to other stressors, such as disease-causing pathogens. Field and laboratory studies were initiated to evaluate the upregulation of SAR, examining the effects of PPO-inhibiting herbicide treatment on Sudden Death Syndrome incidence and severity in soybean and the relationship of disease incidence and severity related to stand count and yield with various population densities. A two-year field study was established in Shawneetown, IL to evaluate grain yield and disease potential of soybean cultivars which are either sensitive or tolerant to protoporphyrinogen oxidase (PPO)-inhibitor herbicides, with seed either treated with insecticide, thiamethoxam and fungicides, fludioxonil and mefanoxam (Upshot) and biological fungicide Bacillus amyloliquefaciens strain D747 (Avonni) (biological fungicide) or non-treated. The seeds were planted at six different seeding rates: 197,684; 247,105; 296,526; 345,947; 395,368; 444,789; with the controls planted at a density of 345,947 seeds ha−1 in a 2 × 2 × 7 factorial study design. Field experiments were planted on April 25, 2016 and May 6, 2017 in 76 cm, 4-row plots measuring 3m by 7m, and herbicide was applied to treated plots over the center 2 rows. Data collection included crop injury at 14, 28 and 56 days after treatment (DAT), stand count at 14 and 28 (DAT), plant height and node count at end-of-season (EOS), and disease incidence and severity ratings beginning at the onset of symptomology. Yield data was collected from the center two treated rows. All plots, except the non-treated controls, received an application of sulfentrazone + cloransulam-methyl (316 g ai ha−1). In 2016 the greatest crop injury, categorized by stunting, at 14 DAT occurred in the PPO-tolerant seed variety without a fungicide and insecticide seed treatment at 4.2% planted at 444,789 seeds/ha. At 28 DAT with means pooled over seed treatment and seed variety, we observed the 197,684 seeds/ha plots having greatest crop injury at 5.25%, and lastly at 56 DAT, the 197,684 and 247,105 seeds/ha plots containing untreated, PPO-sensitive seed were the most injured at 12% crop injury. In 2017, 14 DAT was excluded from the analysis, as there was no injury at the time of rating. At 28 DAT, the PPO-sensitive seed variety, pooled over seed treatment, at 197,684 seeds/ha resulted in greater crop injury at 8.6%, similar to 2016. At 56 DAT, similar results were observed as in 2016, at 12% crop injury in the PPO-sensitive seed variety without a seed treatment planted at 197,684 seeds/ha. There were differences in stand count by seeding rate at 14 and 28 DAT, but no interactive effects between the factors in 2016; seed treatment and seed variety were not significant. However, in 2017, there were differences in stand count by seed variety and seed treatment at 14 and 28 DAT, but again, no interactive effects between factors. Relationships between stand count and seeding rate indicated a threshold at which the environment cannot sustain higher planting densities. Environmental conditions were more favorable for crop growth in 2016 than 2017. Rainfall 10 days following planting was recorded at 67 mm and 290 mm in 2016 and 2017, respectively. Soybean node counts in 2016 were greater in the PPO-tolerant variety were seed was treated with a fungicide and insecticide seed treatment. In 2017, node counts were not influenced by seed treatment or seed variety; however, the greatest number of nodes were in the 444,789 seeds/ha planting population. Disease was more prominent in the high-density plots than in the low-density plots, as would be expected because of the effects of competitive stress on plant susceptibility to pathogens as well as more plants to be infected by the pathogen. Sudden Death Syndrome disease incidence (scale of 0 to 100%) in 2016 ranged from 1.2 to 25.5 across rating dates, while severity (scale of 0 to 9 based on leaf symptomology) ranged from 0.3 to 2.2 across rating dates. In 2017 disease incidence ranged from 0 to 25.0 across all rating dates, and disease severity ranged from 0 to 1.6 across all rating dates. Yield in 2016 ranged from 3,449.8 kg/ha to 4,060.3 kg/ha with the highest yield in the PPO-tolerant variety and the lowest in the -sensitive variety. However, in 2017, yield was lowest in the 197,684 plants/ha treatments at 1,509.1 kg/ha and highest in the 444,789 plants/ha treatments at 4,053.9 kg/ha. Significant varietal and seed treatment differences were also noted in 2017. A growth chamber study consisting of 18 treatments to evaluate an induction of SAR in soybean following exposure to sulfentrazone in PPO-sensitive and -tolerant cultivars. Each treatment was analyzed to quantify pathogen infection. Treatments were also analyzed for the upregulation of SAR genes to evaluate the potential induction of systemic acquired resistance in treated and untreated seed accessions of PPO-sensitive and -tolerant cultivars in response to infections by Fusarium virguliforme, Pythium irregulare, and Rhizoctonia solani following exposure to sulfentrazone. Soil was inoculated with F. virguliforme, P. irregulare and R. solani and planting was done one day after inoculation using AG 4034 and AG 4135, PPO- (sulfentrazone) sensitive and tolerant cultivars, respectively. F. virguliforme DNA levels (351.98 picograms of fungal DNA/200 mg of root tissue) were highest in the PPO-sensitive variety with a seed treatment and an herbicide application. P. irregulare levels were sproradic; regardless of seed treatment, fungal DNA levels were only different in the PPO-sensitive variety with seed treatment and herbicide application at 95.92 picograms of fungal DNA/200 mg of root tissue. All non-inoculated samples produced minute levels of Pythium DNA. R. solani levels were only statistically different in the treatment containing: untreated, PPO-sensitive seed that was non-inoculated. Gene expression levels were greatest in the PPO-tolerant variety. NPR1 expression was greatest in the PPO-tolerant variety with an application of sulfentrazone at 27.26-fold-change over ubiquitin, statistically different from the PPO-tolerant variety without an application of sulfentrazone and the PPO-sensitive variety with an application of sulfentrazone. The expression of the NIMIN1 gene showed no difference between treatments for either PPO-tolerant or -sensitive variety. The PPO-tolerant seed, inoculated with P. irregularrre and treated with sulfentrazone resulted in 0.02-fold change, statistically different from all other treatments except, PPO-sensitive seed without sulfetrazone at 0.33-fold change when EREBP was the gene of interest. The PPO-tolerant variety with an application of sulfentrazone was significantly different from the PPO-sensitive variety with an application of sulfentrazone at 13.8 and 0.69- fold change, respectively in regard to EDS1 being the gene of interest. Looking at PAD4 expression, being the greatest in the treated seed with a herbicide (pooled over variety and inoculum) at 1.66-fold difference from ubiquitin, and statistically different from the remaining treatments. There was no difference between treatments for the gene of interest, SAM22, in either variety. Overall, the field experiment indicated that a seeding rate of 345,947 seeds/ha was optimum with no penalty to yield. By planting a higher population than that yield was not significantly increased. Planting a PPO-tolerant seed variety resulted in the greatest yield overall, but on a disease resistance perspective, it was advantageous to plant a PPO-sensitive variety if SDS is an issue. Lastly, an application of sulfentrazone preemergence to soybeans does result in the upregulation of SAR in soybean, which was confirmed by RT-PCR following the expression level of six SAR genes.

Download or read book World Soybean Research Conference 5 written by Banpot Napompeth and published by . This book was released on 1997 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Breeding soybeans for diverse production environment in the temperature zone; An efficient recurrent selection breeding method for soybean; Study on the karyotypes of soybeans species; Performance of long juvenile soybean genotypes in the Southeastern USA; Suitable sample size in the conservation of soybean landraces; Defect-rectification of indian soybean varieties through mutagenesis; Screening methods for pod-shattering in soybean; Selection of soybean cultivars for diverse environment in New South Wales, Australia; The soybean genome project: progress and prospects; Intergenomic relationship among wild perennial Glycine species; The enhancing factor in Bradyrhizobium japonicum genetic engineered strain HN 32; A new type of soybean lacking KTI and Lox-2; Biotechnology in soybean breeding; Molecular biology and proposed catalytic mechanism of oil synthesis in soybean cotyledons; Molecular marker for resistance to Cercospora sojina Hara in soybean; Studies on genetic resources of soybeans with specific target traits from Southern China; Resistance to Phomopsis seed decay in soybean; Exploiting the long juvenile trait in asian production systems; Genetic of quantitative traits of soybeans; Inheritance of embryoid formation ability in soybean; Evaluation and utilization of genetic potential of semicultivated soybeans; Inheritance of and selection against seed coat cracking in soybeans; Analysis of the combining ability of three different soybean types and their progenies; Cytoplasmic-nuclear male sterile soybean line from interspecific crosses between G. max and G. soja; Utilization of recessive male-sterile lines in soybean; Evaluation of mutagenesis altering soybean nodulation and growth characters with ethyl methanesulfonate; Breeding soybean for high seed yield and seed protein; Stability analysis of advanced lines and soybean cultivars in Northwestern Argentina; Ancestral analysis of soybean cultivars released in China; Phenotypic stability of soybean [Glycine max (L.) Merrill] cultivars in Southeastern Rio Grande do Sul, Brazil: applicability and discrimination of three methods; SAMGEN - PC system to carry out breeding program of self fertilized species; Reducing losses from plant diseases; Reaction of soybean cultivars to frogeye leaf spot and yield loss assessment in the Southeastern United States; Pathogenic variability of Cerscopora sojina and detection of additional genes for resistance to frogeye leaf spot of soybean; Seed, seedling and adult plant resistance of soybean to Colletotrichum truncatum in Thailand; Genetic interaction of differential soybean genotypes and soybean mosaic virus strains; Potential of entomopathogens from palawija crops in Indonesia for soybean lepidopterous pest management; Sources of resistance to insect pests of soybean in Asia; Entomofauna changes with soybean expansion in Brazil; Soybean pest management in Japan; Potential of biological control in soybean insect management in Thailand; Soybean rust research: progress and future prospects; Effects of three bacterial pathogens, causal agents of bacterial blight, bacterial pustule and wildfire on disease severity and yield of soybeans; Selection and identification of soybean cultivars for rust resistance and high yield; Bacterial pustule development and associated yield loss on nine soybean lines; Development of the new methods for ecological study of soybean bacterial pustule: a semiselective medium for detecting Xanthomonas campestri pv. glycines in contaminated soybean seed; Analysis of regional soybean pathosystems with pest zone concept; Genetics of resistance and development of resistant varieties to soybean cyst nematode, Heterodera glycines; Genetic and pathogenic variation in Fusarium solani: the causal agent of sudden death syndrome of soybean; Sudden death syndrome of soybean in the Northern region of the Province of Buenos Aires, Argentina; Effects of tillage, soybean cultivars, and planting date on sudden death syndrome severity; Strategy for integrated pest management expansion in the tropics; Modeling and managing environmental risks from pest management practices; Potential for integrated disease management in soybean; Evolution, impact, and current status of soybean diseases in Argentina; Perspective on physiological research advances in soybean and future research direction; Exploiting the physiological understanding of soybean yield; Soybean water management under french conditions; Physiological studies on varietal differences in copper concentration of soybean seeds; Study on pod-bearing habit and related component characters in soybeans; Improving nitrogen fixation by soybean; Identification and evaluation of a superior strain of soybean rhizobia; Nitrate tolerance of N2 and seed yield on soybean: an agronomic and genetic progeny evaluation; Nitrogen fertilizer management, nitrogen fixation, and yield in two vegetable soybean genotypes; Nitrogen use by soybean canopies and its effect on crop biomass production; Modeling and risk management of soybean; Studies on the cultivation characteristics of an extraordinary nutrient soybean varieties "green cotyledon soybean" in double-cropping rice regions of Southern China; Increasing the area and yield production of winter soybean after two rice seasons; Wheat-soybean relay intercropping: influence of soybean planting dates ans spatial arrangements; Effect of soybean in crop rotation with cotton to reduce Verticillium wilt; Performance of corn and soybean in monoculture and strip intercropping combinations; Changes in seed quality during seed development in soybean cv. Bossier; Influence of irrigation and phosphorus levels on seed quality characteristics in soybean; Seed treatments prior to storage at high humidity increase membrane damage in soybean; Effect of precipitation on seed quality during seed maturation in soybean; Soybean seed quality in Northern Thailand; Adaptation of soybean yield: implications for crop improvement of flowering responses to photoperiod and temperature; Inheritance and use of a long juvenile trait in soybean; Photothermal flowering responses of maturity isolines of soybean cv. Clark; Soil and nitrogen nutrition in soybean; Receme length and thickness in relation to flower production and abortion in soybean; Graphic analysis of flowering adaptation to climate in soybean; Effects of increased light on soybean seed yield and protein concentration; Soybean and sustainability of production system; Effect of soil management practices on soybean yield after lowland rice on vertisol; Effect of soil saturation on yield and other characteristics of soybean [Glycine max (L.) Merrill]; Soybean production under saturated soil condition in Thailand; Soybean and cereal intercropping in the subhumid savanna zone of Nigeria; Soybean in sustainable agriculture: a case of Thailand and Indonesia; Effects of planting time, soil mixture and planting depth on the emergence and seedling growth of soybean cv. Epps; Emerging food uses of soybean in Africa and Latin America; Processing of soymilk free from beany and other off-flavors; Development of value-added soybean food products; Soybean oil and dyslipidemia; Food uses of soybean in Nigeria: opportunities and constraints; Formulation and acceptability of high protein and calcium extruded snackfood from fish powder and full fat soy flour; Soybean industry applications in Asia; Geneytic improvement of nutritional and food processing quality in soybean; Technology for processing and utilization of soybean in India; Effect of soy flour and chickpea flour in the nutritional and sensory properties of chapaties; Lecithin production from soybean gum; Response of selected soybean cultivar to alkaline treatment; Problems, remedies and prospects of soymilk processing; PROCISUR: an experience on agricultural technology development; Binhi un Buhay Village soybean processing and marketing for sustanaible development in the Philippines; Technology to extend soybean cultivation to the tropical savannas of Brazil; Quality choices in the international soybean market; Constraints and strategies in soybean research in Pakistan; Performance of soybean in the Indian Agricultural Economic; Technology package for soybean production after wetland rice in Indonesia; A synthesis of agronomic results of SYGAP II in Indonesia; Soybean production technology in Thailand; Extension of soybean in Thailand; Soybean: environmentally friendly; Soybean: a world-wide crop; Soybean food: nutritionally and industrially valuable; Vegetable soybean production and research; Potential role a brazilian germplasm in Southeast Asia; Soybean in the rice based cropping system: a case in Thailand; Soybean genetics and breeding in Tropical Latin America; Soybean yield grap analysis in India; Soybean research in Thailand; Soybean research and production in Northwestern Argentina; Farmers' constrains to soybean yield improvement in Indonesia; Soybean in South India - start of an integrated effect for processing, crop production and yield maximization; Soybean [Glycine max (L.) Merrill] production and research in Iran.

Download or read book Effect of Soybean Cultivar on the Development of Sudden Death Syndrome and on the Reproduction of Soybean Cyst Nematode written by Travis Walk and published by . This book was released on 1999 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Production Agriculture written by and published by . This book was released on 1993 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production-oriented information for professional agriculturists.

Download or read book Global Climate Change Impacts in the United States written by U.S. Global Change Research Program and published by Cambridge University Press. This book was released on 2009-08-24 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizes the science of climate change and impacts on the United States, for the public and policymakers.

Download or read book Annual Meetings Abstracts written by American Society of Agronomy and published by . This book was released on 1998 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Management of Agricultural Weeds written by Matt Liebman and published by Cambridge University Press. This book was released on 2001-07-19 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents principles and practices for ecologically based weed management in a wide range of temperate and tropical farming systems. Special attention is given to the evolutionary challenges that weeds pose and the roles that farmers can play in the development of new weed-management strategies.

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.

Download or read book Arkansas Farm Research written by and published by . This book was released on 1987 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Rice Crop Science written by Shouichi Yoshida and published by Int. Rice Res. Inst.. This book was released on 1981 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth and development of the rice plant. Climatic environments and its influence. Mineral nutrition of rice. Nutritional disorders. Photosynthesis and respiration. Rice plant characters in relation to yielding ability. Physiological analysis of rice yield.

Download or read book Drought Resistance in Crops with Emphasis on Rice written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1982 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: