Biological Control of Insect Pests of Medicinal Plants - Abelmoschus moschatus, Gloriosa superba and Withania somnifera in Forest Nursery and Plantation in Madhya Pradesh, India

摘要

The present investigation was carried out to evaluate the parasitoids (Trichogramma raoi, T. chilonis), predator (Chrysoperla cornea) and biopesticides i.e. botanicals (neem based Gronim) / mocrobials (Bacillus thuringensis and Beauveria bassiana) against five major insect pests viz. Polytela gloriosae, Anomis flava, Earias vitella, Dysdercus cingulatus and Aphis gossypi of important target species of medicinal plants- Abelmoschus moschatus, Gloriosa superba and Withania somnifera in forest nursery, Tropical Forest Research Institute, Jabalpur and Delakhari west Chhindwara forest division, Madhya Pradesh (India). The results revealed that Bacillus thuringensis 1% followed by neem based pesticide (Gronim) 1% was found to be most effective against defoliators Polytela gloriosae on G. superba, Anomis flava and shoot/fruit borer Earias vitella on A. moschatus. Neem based pesticide (Gronim) followed by Bt 1% was found to be most effective against red bug Dysdercus cingulatus on the fruits of A. moschatus and aphid, Aphis gossypi on W. somnifera. Predator, Chrysoperla cornea @ 500 per 100 sq m followed by parasitoid Trichogramma chilonis @1500 per 100 sq m was also found to be most effective for reduction of the larval population of defoliators P. gloriosae and A. flava.