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Monitor the pest by selecting a leaf from
30 random tomato plants. Choose leaves located below the highest open flower.
Healthy eggs are white with a reddish ring. If more than five healthy eggs
appear, begin treatments. Pesticide treatments are also required when large
numbers of small caterpillars are found feeding on leaves.
This pest has developed resistance to many
insecticides. Select an effective chemical. The following insecticides
are often used for control: esfenvalerate (Asana), methomyl (Lannate),
Bacillus
thuringiensis, azinphosmethyl (Guthion), carbaryl (Sevin), and Pyrethrin/Rotenone.
Parasitic wasps, especially Trichograma
spp., are important natural enemies. Fruitworm eggs turn black when
parasitized.
Avoid planting tomato near corn or cotton
to prevent heavy pest infestations. |