Evaluation of 3 types of knapsack equipment for spraying cypermethrin to control Adoretus compressus and Oryctes rhinoceros in immature oil palms
1999
Chung, Gait Fee | Cheah, See Siang | Balasubramaniam Ramalingam
During anacute infestation ofcockchaferbeetles, Adorestus compressus, occurringinafield of newly planted oil palms, conventional knapsack sprayer, F 120 knapsack sprayer and motorised knapsack mistblower were evaluated. After 6 rounds of 2 weekly spraying of cyperrnethrin (0.005%), the three sprayers were found suitable and recorded significant reduction of severe damaged fronds in the upper and middle position. Similarly, these 3 knapsack equipment were evaluated for the control of rhinoceros beetles, Oryctes rhinoceros in immature oil palms (second year of field planting). After 7 months of 2 weekly spraying of cyperrnethrin (0.1 %), all the three sprayers were found suitable and recorded significant reduction in the number of severely and moderately damaged palms.
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