Flower thrips (Megalurothrips sjostedti)
It may feed on petioles and leaves, but prefer flowers. Attacked petioles and leaves have tiny holes surrounded by discoloured areas. Affected flowers are brown, dried, or completely distorted. The flowers drop prematurely. Thrips also feed on pollen leading to decrease in pollination and seed set. Pod production is low and pods are deformed.
- Plough and harrow before planting. It can reduce subsequent thrips attacks by killing pupae in the soil.
- Conserve natural enemies. Natural enemies, particularly, predators are important in natural control of thrips. Main natural enemies include predatory bugs (Orius spp. and Anthocoris spp.) and predatory thrips.
- Spray with biopesticides (e.g. Spinosad), if infestation is severe.