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Joint action of Cochliobolus lunatus and atrazine on Echinochloa crus‐galli (L.) Beauv.
Author(s) -
SCHEEPENS P. C.
Publication year - 1987
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1987.tb00735.x
Subject(s) - echinochloa , echinochloa crus galli , biology , fungus , agronomy , weed , botany
Summary The potential of the endemic fungus Cochliobolus lunatus as a biological control agent against Echinochloa crus‐galli was investigated. Under appropriate conditions the fungus produced leaf necrosis on E. crus‐galli resulting in death of young seedlings. However, plants with more than two leaves mostly recovered after some time. Bean, barley, maize, oat, rye, tomato and wheat were highly resistant to the fungus. In experiments in a climate room or in a glasshouse E. crus‐galli with more than two leaves could effectively be controlled by C. lunatus in combination with a sub‐lethal dosage of atrazine as low as 2.5 mg m −2 due to a positive interaction between fungus and herbicide.