ISSN 2285-5785, ISSN CD-ROM 2285-5793, ISSN ONLINE 2285-5807, ISSN-L 2285-5785

Researches concerning vegetation treatment of the maize crop for controlling of the maize leaf weevil (Tanymecus dilaticollis GYLL)

Published in Scientific Papers. Series A. Agronomy, Vol. LV-2012
Written by Emil GEORGESCU, Nicoleta BALABAN, Lidia CANĂ

Maize leaf weevil (Tanymecus dilaticollis Gyll) is the main pest of this crop in south and south-east of the Romania. Every year, over 1 million hectares with maize are attacked by this pest, crop can be totally damaged if wasn’t effected seed or vegetation treatments. In experimental field of Plant Protection Laboratory in frame of National Agricultural Research and Development Institute Fundulea it has studied new generation insecticides, used like correction vegetation treatment for maize leaf weevil control (Calypso 480 SC 0,09 l/ha, Decis Mega 50 EW 0,15 l/ha, Karate Zeon 5 CS 0,15 l/ha, Karate 2,5 WG 0,3 kg/ha). The insecticides assigned a satisfactory protection of the maize plants against this pest, saved plants percent were over 94 % at all treated variants while at untreated plants saved average plants percent, in period 2009-2011, were 79,02 %. Plants height at 50 days after sowing were higher than 159 cm at all treated variants while at control variant were 137,63 cm.

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