EFFICIENCY OF INSECTICIDES APPLIED IN SEED TREATMENT AND PULVERIZATION, IN THE CONTROL OF CORN INITIAL PESTS
2006
FERNANDO ALVES DE ALBUQUERQUE | LUCIANA MAESTRO BORGES | THAIS DE OLIVEIRA IACONO | NAYRA CRISTIANE DE SOUZA CRUBELATI | ANDRÉ DE CARVALHO SINGER
The corn crop can be attacked by several pests, such as Frankliniella williamsi, Dichelops spp., Dalbulus maidis and Spodoptera frugiperda, in its initial phase of development. This can result in significant losses of production. With the objective of studying the chemical control of these pests, the efficiency of thiamethoxam (42 g a.i./ha) applied by seed treatment, thiamethoxam (21.15; 28.20 e 35.25 ml/ha) + lambdacyhalothrin (15.90; 21.20 e 26.50 g a.i./ha), methamidophos (360 g a.i./ha) and lufenuron (15 g a.i./ha) applied by foliar spraying as well as combinations of these treatments were evaluated. It was observed that only the treatments with thiamethoxam (42 g a.i./ha) applied in the seeds along with thiamethoxam (21.15; 28.20 or 35.25 ml/ha) + lambdacyhalothrin (15.90; 21.20 or 26.50 g a.i./ha) applied by foliar spraying presented a minimum efficiency of 80% in the control of all the appraised pests.
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