The control of corn borer (Ostrinia nubilalis Hbn.) by Trichogramma Pint/Voeg., under the conditions from the plateau of Transylvania

This paper presents results obtained at Agricultural Research Station Turda and Plant Protection Centre Mures, in 1988 and 1989 regarding the treatments efficiency with Trichogramma maidis for reduction of Corn borer attack and maintenance of yield stability, as well as the parasitism degree of Euro...

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Published inAnalele Institutului de Cercetari pentru Cereale si Plante Tehnice Fundulea (Romania) Vol. 59
Main Authors Muresan, F, Mustea, D, Sandru, C, Tomsa, M. (Institutul de Cercetari pentru Cereale si Plante Tehnice - Fundulea (Romania))
Format Journal Article
LanguageRomanian
Published 1992
Subjects
OSTRINIA NUBILALIS
PROTECCION DE LAS PLANTAS
PROTECTION DES PLANTES
ROUMANIE
RUMANIA
TRICHOGRAMMA
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Summary:This paper presents results obtained at Agricultural Research Station Turda and Plant Protection Centre Mures, in 1988 and 1989 regarding the treatments efficiency with Trichogramma maidis for reduction of Corn borer attack and maintenance of yield stability, as well as the parasitism degree of European Corn borer eggs in natural conditions. The treatments with T. maidis were carried out at the appearance of the first adults of O. nubilalis, the repeating was made at 7-8 days intervals. Under the conditions from Turda, the treatment efficiency, after two launches was of 63,2 percent (1988) and 86,5 percent (1989). The yield increase was of 10-19 percent. At Mures, under the conditions from 1988 and 1989, the treatment efficiency was of 61,1 percent and 69,7 percent, and the yield increase was of 27,0 percent. Percentage parasitism of European Corn borer eggs ranged from 50 percent to 80 percent, at the distance of 8 m.
Bibliography:9500082
H10
ISSN:0253-1682