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On the basis of conidial measurements, growth characteristics, and pigmentation in culture, two of three Egyptian Alternaria spp. (isolates 3 and 5) isolated from waterhyacinth (Eichhornia crassipes) were identified as A. eichhorniae and the third, isolate 6, as A. alternata. Isolate 5 (Ae5), the most virulent, caused a severe disease, characterized by leaf blight and discrete leaflesions. The disease...
An alginate formulation of Alternaria eichhorniae (isolate Ae5) was evaluated in greenhouse trials as a bioherbicide to control waterhyacinth (Eichhornia crassipes). Pellet and powder formulations, the latter used in combination with hydrophilic substances, were tested. Four weeks after applying an alginate-pellet formulation of Ae5 to waterhyacinth plants in a greenhouse, the treated leaves became...