Download or read book Combating Damping off of Tomatoes by Seed Treatment written by James Gordon Horsfall and published by . This book was released on 1930 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Copper Seed Treatment for Control of Damping off of Spinach written by and published by . This book was released on 1933 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Seed Treatment on Control of Damping off of Ornamentals and a Study of a New Fungal Pathogen Causing Damping off written by Floyd Myron Clum and published by . This book was released on 1954 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seed and Soil Treatment for the Control of Damping off written by Lee Homer Person and published by . This book was released on 1942 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Combating Damping off written by James Gordon Horsfall and published by . This book was released on 1938 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Zinc Oxide as a Seed and Soil Treatment for Damping off written by James Gordon Horsfall and published by . This book was released on 1934 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control Methods for Damping off of Tomato Seedlings Caused by Pythium Myriotylum written by and published by . This book was released on 2006 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pythium damping-off has the potential to cause severe loss in greenhouse and field grown tomatoes. Species of Pythium are found in soils from all climates, and capable of surviving for long periods without a host. Infectious structures of Pythium species are motile, and therefore able to travel through irrigation water and runoff. Pythium myriotylum thrives in warm, humid environments such as that of the Southeastern United States, and was thus chosen for this study. Currently, no tomato varieties with resistance to damping-off are available. In addition, the agriculture industry is striving for sustainable and biological methods of control of plant pests and pathogens. Therefore, biological controls that are capable of simultaneously protecting plants from pathogens and pests are needed. To that end, the first part of this investigation for biological control of tomato damping-off involves the seed application of an entomopathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin, along with a commercial plant growth-promoting rhizobacteria formulation (BioYield) that is known to induce systemic resistance in plants to herbivores and pathogens, and a soil amendment with Monarda sp. containing essential oils that are fungicidal to many soilborne pathogens. The objectives of the first study were to determine the following: (i) if herbage of Monarda didyma used as a soil amendment is capable of suppressing damping-off of tomato seedlings; (ii) if conidia of Beauveria bassiana isolates used as seed coatings are capable of suppressing damping-off of tomato seedlings; (iii) if a commercial form of plant growth promoting rhizobacteria used as a seed drench is capable of suppressing damping-off of tomato seedlings; and (iv) if combinations of the herbage and the seed treatments are synergistic or antagonistic. Results from the first study indicated cultivar specificity with Beauveria bassiana and herbage treatments. Survival was increased in 'Mountain Spring' tomato seedlings treated with either B. bassiana 11-98 or BotaniGard when challenged with the pathogen, but no similar effects were observed in 'Celebrity' seedlings. There was also an increase in stem diameter in Beauveria-treated 'Mountain Spring' that was not seen in 'Celebrity.' When 'Celebrity' seedlings were grown in media amended with 'Puerto Purification, ' there was a significant decrease in disease index when challenged with the pathogen. This effect was not observed in 'Mountain Spring, ' 'Violet Queen' had negative effects on 'Celebrity' seedling growth, seen as a decrease of survival and increase in disease index. Treatment with PGPR had no significant effects in either cultivar. The second part of this research investigated dried, ground leaves (herbage) from 16 Monarda varieties as amendments for biological control against Pythium damping-off in tomato. The objectives of this study were to determine the following: (i) if Monarda essential oil constituents could inhibit growth of P. myriotylum in vitro; (ii) if herbage amendments could suppress Pythium damping-off; (iii) if herbage amendments had any adverse or beneficial effects on tomato seedling growth. When essential oil constituents of Monarda were tested for toxicity against P. myriotylum, thymol and carvacrol inhibited mycelial growth at low and high concentrations (5 and 50 [mu] l, respectively). GC-MS analysis of the herbage used in this study showed concentration of thymol and carvacrol to be variable among varieties. 'Croftway Pink' was high in thymol; 'Sioux' was approximately equal in thymol, carvacrol, and the sesquiterpene thymoquinone. 'Mohawk' had a high concentration of thymoquinone and Rose Geranium had no detectible amounts of thymol, carvacrol, or thymoquinone. Treatments with four of sixteen Monarda varieties were successful in decreasing disease index and increasing survival of 'Mountain Spring' seedlings when challenged with the pathogen. 'Croftway Pink' dominated the varieties with significantly increased shoot height, stem diameter, and survival, as well as decreased disease index in tomato seedlings. Three other amendments, 'Sioux', 'Mohawk', and Rose Geranium, had no negative effects on seedling growth and increased seedling survival.

Download or read book The Effects of Seed Treatments on Damping off of Spinach and Beet Seedlings in Naturally and Artificially Infested Muck Soils written by Robert Allan Davis and published by . This book was released on 1960 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tomato seedling Damping off written by Edward Edinborough Chamberlain and published by . This book was released on 1937 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Extension Pathologist written by and published by . This book was released on 1932 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Red Oxide of Copper as a Dust Fungicide for Combating Damping off by Seed Treatment written by James Gordon Horsfall and published by . This book was released on 1932 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Tomato Diseases in the Seed Bed and Cold Frame written by Arthur Leslie Harrison and published by . This book was released on 1934 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the Agricultural Experiment Stations written by and published by . This book was released on 1932 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Causes and Control of Damping off of Tomato Seedlings written by Leonard Jay Alexander and published by . This book was released on 1931 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin written by and published by . This book was released on 1932 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experiment Station Record written by U.S. Office of Experiment Stations and published by . This book was released on 1933 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agricultural and Industrial Applications Environmental Interactions written by Dewayne Torgeson and published by Elsevier. This book was released on 2012-12-02 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fungicides, Volume I: Agricultural and Industrial Applications, Environmental Interactions discusses the application, use, and environmental interactions of fungicides. This book is organized into 15 chapters that cover the commercial development of fungicide and the organism's interaction with the environment. After discussing the history of fungicides, the book presents data on world fungicide usage and how this usage is influenced by epidemiology. It then describes procedures and approaches for commercial fungicide development; practical tests and laboratory techniques for agricultural fungicide toxicity; and significance of fungicide formulation that is determined by a variety of factors, including cost and biological efficiency. The following chapters discuss technological evolution, both in chemical fungicides and in the machinery for their application for soil and seed treatment. The application of foliar and postharvest fungicides and the use of other fungicides as industrial and wood preservatives is also tackled. The last four chapters are concerned with the various interactions between fungicides and the environment which may cause them to be more or less effective. The book will be useful to researchers, advanced students, and professional workers in the fungicide field of study who are concerned with the synthesis and development of better fungicides or their mode of action.