Saha, S.K., Jaiswal, A.K., & Singh, B.H. 2000 Forecasting of lac yield from insect culture on Butea monosperma (Lam.) for rainy season crop.. Shashpa 7(2): 125-132.

Notes: Important lac yield affecting biometrical attributes for the rainy season crop of rangeeni lac on Butea monosperma (Lam.) Taub. were identified. Out of 14 characters considered in the present study, a significant and positive correlation was found with yield and length of lac insect settlement per shoot, number of shoots with lac culture per tree, volume occupied by a hundred lac insects, number of living female insects per sq. cm, amount of broodlac input, height of host crown, number of lac insects settled per sq. cm, number of stumps per tree and number of living lac insects per sq. cm in decreasing order of magnitude. The forecast model, retaining the amount of broodlac used, number of shoots with lac culture and length of lac insect settled per shoot revealed 57 per cent variation in lac yield. The model developed showed that a forecast of lac yield per tree is possible once lac insects Kerria lacca Kerr are established on shoots. This period corresponds to the 2-3 weeks after raising the culture or the the 10 weeks before harvesting.