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 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 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 The Control of Damping off in Plant Beds written by James Johnson and published by . This book was released on 1914 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corn Root Rot written by Basil Baxter Branstetter and published by . This book was released on 1924 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crop Rotation on Organic Farms written by Charles L. Mohler and published by Natural Resource Agriculture and Engineering Service (Nraes). This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Management of Damping Off of Tomato Seedlings Caused by Pythium Aphanidermatum Edson Fitzp written by B. C. Reddy and published by . This book was released on 1987 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artemisinin Based and Other Antimalarials written by Guoqiao Li and published by Academic Press. This book was released on 2017-11-28 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artemisinin-Based and Other Antimalarials: Detailed Account of Studies by Chinese Scientists Who Discovered and Developed Them provides a historical and scientific background of the discovery and development of artemisinin, artemisinin derivatives, combination drugs and related chemicals. It is a historical document, a scientific treatise, and a fascinating description of innovative research on new drug development that is carried out under extremely difficult conditions. The book also includes detailed experiments, physical-chemical procedures, practical methodologies and clinical trials. It is a valuable reference for students and researchers in the fields of scientific history, medicine, pharmaceutical science, chemistry, pharmacology and toxicology. Presents details of all stages of drug development, including in vitro experiment, animal exploratory studies, animal tests for toxicity, safety and efficacy followed by stages I, II, III and IV, safety and efficacy in human volunteers and patients with malaria Provides many physical-chemical laboratory procedures, such as NMR, MS, HPLC and X-ray diffraction used in drug development Includes practical methodology of clinical trials from many research centers and countries to demonstrate the importance of this discovery

Download or read book Tomato Diseases and Their Control written by Raymon Ellis Webb and published by . This book was released on 1961 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Management of Damping off of Tomato Seedlings Caused by Pythium Aphanidevmatum Edson Fitzp written by CHENCHU REDDY B and published by . This book was released on 1987 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Damping off Disease of Seedlings with Special Reference to the Tomato written by H. Loran Blood and published by . This book was released on 1934 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Integrated Pest Management for Tomatoes written by and published by UCANR Publications. This book was released on 1998 with total page 124 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 Control of Damping off in Tomato Seedlings by Fungicide Incorporation in Fluid drilling Gel written by Laurel A. Brabant and published by . This book was released on 1983 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Horticultural Reviews Volume 44 written by Jules Janick and published by John Wiley & Sons. This book was released on 2019-02-28 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: Horticultural Reviews presents state-of-the-art reviews on topics in horticultural science and technology covering both basic and applied research. Topics covered include the horticulture of fruits, vegetables, nut crops, and ornamentals. These review articles, written by world authorities, bridge the gap between the specialized researcher and the broader community of horticultural scientists and teachers.

Download or read book Diagnosing Hemp and Cannabis Crop Diseases written by Shouhua Wang and published by CABI. This book was released on 2021-08-18 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hemp and cannabis, both belonging to Cannabis sativa, have emerged as some of the most valuable crops because of their multiple functionalities - industrial, medicinal, and recreational uses. Like all other crops, they are at risk of diseases and pests. In certain cases, an entire hemp field can fail due to unexpected disease. As a new and highly regulated crop, research on Cannabis crop diseases is scarce, and the science of plant diagnostics is not well covered in the literature. Taking hemp/cannabis as a model crop, the book illustrates how to diagnose a disease problem and how to manage it effectively. It presents real disease cases encountered during crop production, and explains methods of diagnosis, both in the field and in the lab, in order to find out the cause(s).

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: