Root-knot disease of mulberry is caused by the nematode Meloidogyne incognita (Kofoid & White) Chitwood. It demonstrated important economic implications for sericulture in a field and silkworm rearing trial for the homeopathic medicine Cina (MT,200C & 1000C). Globules prepared from the flowering meristems of Artemisia nilagirica (Clarke) pamp mixed with distilled water @ 7.2 mg/ml, were applied by foliar spray once daily for 15 days @ 10ml/plant on mulberry (Morus alba L.,cv.S1) on plants naturally infected with M. incognita. Naturally infected control-plants were treated using the same procedure but with globules only (without Cina medicines).
All Cina-treated infected-plants showed better growth in all respects. All the nematode infected plants treated with Cina, significantly reduced root-knot disease in terms of root gall number and nematode population in root and soil. Silkworm larvae (Bombyx mori L.) feeding on the leaves of Cina treated plants, showed improved growth, increased silk gland weight, shell weight, shell ratio (SR%) and effective rate of rearing (ERR %); They also took fewer feedings and number of feeding days, shorter starting time to spinning day and span of spinning day; shorter moulting time to cocoon formation, and zero mortality rate. This trial commercially increased silk production and effective rate of rearing (ERR%) without disturbing the biosphere.
Keywords: Silk; Cina; treatment; mulberry; root-knot; field trial; homeopathy