Phytophthora Root Rot, Damping-off, Sclerotinia Stem Rot and Brown Stem Rot of Soybeans in Response to Swine Manure Applications PDF Download
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Author: Lisa Hedrick Oelke
Publisher:
ISBN:
Category :
Languages : en
Pages : 132
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Book Description
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.
Author: Lisa Hedrick Oelke
Publisher:
ISBN:
Category :
Languages : en
Pages : 132
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Book Description
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.
Author: David Glenn Lohnes
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Diseases are a major factor limiting the yield of soybean (Glycine max (L.) Merr.). Brown stem rot of soybean, caused by Phialophora gregata (Allington and Chamberlain) W. Gams, and phytophthora root rot, caused by Phytophthora sojae Kaufmann & Gerdemann, are major diseases of soybean in Illinois. A gene for resistance to powdery mildew, caused by Microsphaera diffusa Cke. & Pk., has also been found to be linked to a gene for phytophthora resistance. A field study was conducted to determine yield differences between isolines carrying different alleles at the locus for powdery mildew resistance, greenhouse experiments were performed to study the inheritance of brown stem rot resistance, and laboratory experiments were conducted in attempts to find molecular markers linked to brown stem rot, phytophthora, and powdery mildew resistance in soybean. When isolines carrying alleles for powdery mildew resistance are compared, the resistant isolines yielded 7% more than the adult-plant resistant isolines. With this yield advantage, it would be advantageous to use complete resistance to powdery mildew as a marker to select for phytophthora resistance in a soybean breeding program. Classification of reaction to brown stem rot of soybean populations indicates that a Clark isoline contains Rbs3, and that a germplasm line deriving resistance from PI 90.138 contains Rbs1 and another unknown resistance gene. Molecular marker analysis of Harosoy and a Harosoy brown stem rot isoline did not produce any polymorphic markers. Clark, Harosoy, and Williams were screened with several RAPD primers to determine the random amplified polymorphic DNA (RAPD) variability present between these cultivars. The percentage of RAPD products in common was 94% for Clark and Williams, 90% for Clark and Harosoy, and 84% for Harosoy and Williams. The material cost of running a single RAPD reaction ranged from 21 to 76 cents. Linkage analysis of the restriction fragment length polymorphism and disease classification revealed that the loci studied are in classical linkage group 19 and RFLP linkage group J, in the most likely order Rps2 Rmd Rj2 pA233 pA724 pK375. This is the most agronomically important gene-dense region of the soybean molecular map identified to date.
Author: Robert F. Nyvall
Publisher:
ISBN:
Category : Phytophthora sojae
Languages : en
Pages : 2
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Book Description
Author: Martin Alan Draper
Publisher:
ISBN:
Category : Phytophthora diseases
Languages : en
Pages : 4
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Book Description
Author: Robert F. Nyvall
Publisher:
ISBN:
Category : Phytophthora sojae
Languages : en
Pages : 4
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Book Description
Author: Michigan State University. Cooperative Extension Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
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Book Description
Author: Iowa State University
Publisher:
ISBN:
Category : Commencement ceremonies
Languages : en
Pages : 510
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Book Description
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 922
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Book Description
Author: Andy Clark
Publisher: DIANE Publishing
ISBN: 1437903797
Category : Technology & Engineering
Languages : en
Pages : 248
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Book Description
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.
Author: George B. Lucas
Publisher: Springer Science & Business Media
ISBN: 1461572940
Category : Technology & Engineering
Languages : en
Pages : 374
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Book Description
Every year we see a remarkable increase in scientific knowledge. We are learning more each day about the world around us, about the numerous biological organisms of the biosphere, about the physical and chemical processes that shaped and continue to change our planet. The cataloging, retrieval, dissemination, and use of this new information along with the continued development of new computer technology provide some of the most challenging problems in science as we enter the Information Age. With the explosion of knowledge in science, it is especially important that students in introductory courses learn not only the basic material of a subject, but also about the newest developments in that subject. With this goal in mind, we have prepared a second edition of Introduction to Plant Diseases: Identification and Management. We prepared this edition with the same general purpose that we had for the first edition - to provide practical, up-to-date information that helps in the successful management of diseases on food, fiber, and landscape plants for students who do not have a strong background in the biological sciences. We included new information on (1) the precise identification of diseases and the pathogens that cause them, (2) the development of epidemics of plant diseases, (3) the application of biotechnology in plant pathology, (4) the use of alternative methods of crop production and disease management that help protect the environment, and (5) diseases that have become more important since the first edition was published.
