Download or read book Role of Soil PH on the Development of Brown Stem Rot of Soybean written by Nancy C. Kurtzweil and published by . This book was released on 2004 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of Brown Stem Rot in Resistant and Susceptible Soybeans written by Charles Chester Kusek and published by . This book was released on 1981 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brown Stem Rot Syndrome Development in Soybeans written by James Francis Kunkel and published by . This book was released on 1964 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Photoperiod Plant Age and Stage of Development on Brown Stem Rot of Soybean written by Daniel V. Phillips and published by . This book was released on 1972 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Role of Host Genotype and Pathogen Variability on the Development of Brown Stem Rot of Soybeans written by Teresa Jean Hughes and published by . This book was released on 2001 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Cultural Practices on Saprophytic Survival of Phialophora Gregata and Severity of Brown Stem Rot of Soybean written by Eric Allen Adee and published by . This book was released on 1993 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phialophora Gregata F sp Sojae IGS genotype B and the Development of Brown Stem Rot of Soybean written by Teresa Jean Hughes and published by . This book was released on 2009 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Diseases written by Daren Mueller and published by . This book was released on 2010 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Soils Nutrition and Water Relations Upon Charcoal Rot Disease Processes in Kansas written by David Ricardo Jimenez Cruz and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Charcoal rot, caused by Macrophomina phaseolina, is the most important soybean disease in Kansas. Several strategies have been recommended to control this disease including crop rotation, lower plant densities, biological control, plant resistance and tolerance, and fungicide application. However, those techniques have not been completely effective and the information concerning soil texture, irrigation and micronutrient fertility (particularly manganese) upon charcoal rot disease severity and the pathogen population is limited. The objective of this study was to determine key factors that affect the biology of M. phaseolina and charcoal rot processes under laboratory, greenhouse and field conditions. M. phaseolina microsclerotia were produced from PDA pure isolate and infested Japanese millet in the laboratory and characterized by different techniques such as serial dilutions in semi selective media with the aim to produce quality inoculum to reliably infect soybean seedling roots under greenhouse conditions; production of inoculum by infesting Japanese millet was the most efficient method. Root colonization and root infection of soybean seedlings was assessed through the use of M. phaseolina inoculum under controlled conditions in the greenhouse. Root infection by M. phaseolina and microsclerotia longevity in soil is determined by environmental factors such as soil moisture content, soil texture and source of inoculum. The objective of the greenhouse study was to determine the impact of these variables on seedling root infection at the V1 and V2 development stages. Artificial soils with different textures were infested; M. phaseolina microsclerotia and soybean seedlings were exposed to different soil moisture contents including pot saturation, pot (field) capacity, and permanent wilting point. Soil populations and levels of root colonization for the stages were assessed by estimating CFUs and root length. Results indicate that soil texture has a significant impact upon root morphology and root length. Root populations of M. phaseolina were significantly higher in sandy soil textures and lower in the fine-textured soils, suggesting an impact of soil water holding capacity in the root infection process. The effect of water stress on seedling root colonization by M. phaseolina indicates that early infection may be more important than previously thought. A field study was also conducted to determine the effect of the aforementioned variables in a 2-year field experiment conducted at two Kansas locations. Pathogen colonization was iii assessed by measuring colony-forming units (CFUs) from ground root tissue at R2-R4 (post-flowering/early pod development) and R8 (maturity) stages. Soil populations (pre-planting and post-harvest) of M. phaseolina, yield parameters, and plant characteristics were obtained. Results indicated that there are complex relationships between soil physiochemical properties (pH, NPK content, exchangeable cations, and organic matter) and soil texture (sand, soil, and clay composition), which may mitigate disease severity and pathogen levels in host tissue. Results also indicated that in natural M. phaseolina-infested soils, cropping history and soil texture play an important role in charcoal rot processes and influence the levels of pathogen soil populations, root colonization at maturity and, more importantly, soybean yield.
Download or read book Brown Stem Rot of Soybean written by Craig Robert Grau and published by . This book was released on 19?? with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soja; Doencas; Fungos; Phialophora gregata.
Download or read book Phytophthora Root Rot Damping off Sclerotinia Stem Rot and Brown Stem Rot of Soybeans in Response to Swine Manure Applications written by Lisa Hedrick Oelke and published by . This book was released on 1998 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic fertilizer treatments resulted in levels of damping-off similar to manure applications in some instances and it is hypothesized that the swine manure introduced a salt toxicity problem in some instances. To minimize the detrimental effects of manure because of increased disease potential, and maximize beneficial effects, manures should be applied as early in the spring as possible, and at the lowest rates possible. Phytophthora resistant varieties should be used and seed should be treated with af ungicide. The manure should be injected into the soil between soybean rows or broadcast and incorporated immediately.
Download or read book Effects of Growth Stages Temperature and Vertical Distribution of Infested Residue on Soybean Brown Stem Rot Incidence and Severity written by Harikrishnan Ramasubramaniam and published by . This book was released on 1997 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, in the second study, residue sizes and depth of placement had significant effects on both incidence and severity. Mixing at the bottom 5 cm had significantly lower incidence and severity in comparison to the other two placements with both residue sizes. There were no significant differences in disease incidence and severity among densities.
Download or read book Characterization of Brown Stem Rot Resistance in Soybean written by Michael Stuart Bachman and published by . This book was released on 1999 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DOBSN written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colonization of Brown Stem Rot Resistant and Susceptible Soybean Varieties by Phialophora Gregata and Other Fungi During the Growing Season written by Carmen Alicia Martorell de Milla and published by . This book was released on 1980 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Brown Stem Rot written by R.F. Nyvall and published by . This book was released on 1979 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Resistance to Brown Stem Rot written by Megan Elise Kirsch and published by . This book was released on 2001 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
