Phytoparasitica (1997) 25, p. 362 (Elad)
Y. Elad (1997)
Use of Trichoderma harzianum T39 against moisture-enhanced foliar diseases in greenhouse crops
Phytoparasitica 25 (4), 362-362
Japan-Israel Workshop on Novel Approaches for Controlling Insect Pests and Plant Diseases, July 12-17, 1997, Kibbutz Ma'ale haHamisha, Israel
Abstract: Trichoderma harzianum T39 (commercially available as Trichodex 20SP, Makhteshim Chemical Works, Be'er Sheva, Israel) is registered for use as a biocontrol preparation in several countries around the world. The most important disease combatted by T39 is gray mold (Botrytis cinerea) of wine and table grapes. T. harzianum T39 also controls gray mold on tomato, cucumber, strawberry, pepper, bean, lettuce, chickpea and other crops, and white mold (Sclerotinia sclerotiorum) on cucumber, lettuce, chickpea, sunflower and others. Recently it was found that leaf diseases such as leaf mold (Fulvia fulva syn. Cladosporium fulvum) on tomato, and downy mildew (Pseudoperonospora cubensis) and powdery mildew (Sphaerotheca fuliginea) on cucumber, were controlled by T. harzianum T39 under commercial greenhouse conditions. S. fuliginea was completely controlled by T. harzianum T39 combined with a horticultural oil. Under commercial conditions in greenhouses or in the open, T. harzianum T39 is applied alone at a rate of 0.2-0.4% (as Trichodex) or in combination with other means of control. The integration of T. harzianum T39 and chemical fungicides in greenhouses is aided by the use of a forecast system (GREENMAN) to predict outbreaks of epidemics in greenhouses, developed recently by Elad and Shtienberg. When making decisions before each spray on whether to apply Trichodex or chemicals, the weather forecast, type of greenhouse and crop, etc., resistance of the pathogen to potential fungicides, and a multi-disease situation are taken into consideration.
Database assignments for author(s): Yigal Elad
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
application technology
evaluation - screening - selection
