Encourage the activity of the larval parasitoid Microplitis maculipennis. Azadirachtin 0.03% (1000 ml per hectare) is listed as a spray option.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Castor – Pest management (Semilooper), p. 210
Region
Tamil Nadu
Last updated
2026-11-04
Chemical pesticides: ask before you spray
The source lists insecticides for semilooper, hairy caterpillars, other defoliators and flower thrips, and fungicides for castor diseases. Many are hazardous, and some may be restricted. Choose a product only with your local Agriculture Officer.
Follow the instructions on the product label. Consult your local Agriculture Officer before use.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Castor – Crop protection, pp. 210–212
