Evaluation of non-chemical seed treatment methods for the control of Alternaria dauci and A. radicina on carrot seeds     

Eckhard Koch  Annegret Schmitt  Dietrich Stephan  Carola Kromphardt  Marga Jahn  Hermann-Josef Krauthausen  Gustaf Forsberg  Sigrid Werner  Tahsein Amein  Sandra A. I. Wright  Federico Tinivella  Maria L. Gullino  Steven J. Roberts  Jan van der Wolf  Steven P. C. Groot 《European journal of plant pathology / European Foundation for Plant Pathology》2010,127(1):99-112

The current study was initiated to evaluate the efficacy of physical methods (hot water, aerated steam, electron treatment) and agents of natural origin (resistance inducers, plant derived products, micro-organisms) as seed treatments of carrots for control of Alternaria dauci and A. radicina. Control of both Alternaria species by seed treatment with the resistance inducers was generally poor. Results were also not satisfactory with most of the formulated commercial micro-organism preparations. Based on the average of five field trials, one of these, BA 2552 (Pseudomonas chlororaphis), provided a low but significant increase in plant stand. Among the experimental micro-organisms, the best results were obtained with Pseudomonas sp. strain MF 416 and Clonostachys rosea strain IK726. A similar level of efficacy was provided by seed treatment with an emulsion (1%) of thyme oil in water. Good and consistent control was generally achieved with the physical methods aerated steam, hot water and electron treatment. Aerated steam treatment was, apart from the thiram-containing chemical standard, the best single treatment, and its performance may at least partially be due to extensive pre-testing, resulting in dosages optimally adapted to the respective seed lot. In some of the experiments the effect of the hot water treatment, which was tested at a fixed, not specifically adapted dosage, was significantly improved when combined with a Pseudomonas sp. MF 416 or C. rosea IK726 treatment. The results are discussed in relation to the outcome of experiments in which the same seed treatment methods and agents were tested in other seed-borne vegetable pathosystems.  相似文献   

Evaluation of non-chemical seed treatment methods for the control of Phoma valerianellae on lamb’s lettuce seeds     

Schmitt  A.  Koch  E.  Stephan  D.  Kromphardt  C.  Jahn  M.  Krauthausen  H. -J.  Forsberg  G.  Werner  S.  Amein  T.  Wright  S. A. I.  Tinivella  F.  van der Wolf  J.  P  S. 《植物病害和植物保护杂志》2009,116(5):200-207

Journal of Plant Diseases and Protection - The aim of the present study was to identify seed treatment methods for eradicating Phoma valerianellae from lamb`s lettuce seeds in organic vegetable...  相似文献