FMC SOLUTIONS
Armyworm
Onion Armyworm (Spodoptera exigua) is a highly polyphagous lepidopteran pest of vegetables that causes significant damage and yield loss due to extensive direct feeding.
What are the symptoms
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In onion, larvae cut leaves causing them to dry and eventually wilt; it also feeds on onion bulbs, boring and feeding inside leading to rotting and decay.
Impact to the crop
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Infestation on fruits/bulbs leads to a decrease in the quality of the produce.
How to control
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√ Flooding of the field prior to planting to kill the pupa present in the soil
√ Spraying of NPV (Nucleopolyhedrovirus) and Bt (Bacillus thuringiensis) on newly hatched and young larvae as biological control agents
√ Manual collection of larva and light trapping of adults
√ Installation of sex pheromone baited traps and application of recommended insecticides
Source: Dela Cueva, et al., 2015
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