Singh, B.P., Mishra, Y.D., Kumar, P., Srivastava, S.C., & Sushil, S.N. 2001 Effect of plant densities and fertilizer levels on plant growth and lac yield of Acacia auriculaeformis (Benth.) A. Cunn. (Akashmani).. Indian Journal of Forestry 24(2): 166-170.

Notes: A study was conducted in a sandy clay loam soil in Ranchi, Bihar, India to determine the proper spacing and fertilizer rates for the harvested biomass and lac production of Acacia auriculiformis (by Kerria lacca) during the winter crop season. The treatments used in the study include: 3 planting spacing (2.0 x 1.8, 3.0 x 2.7 and 4.0 x 3.6 m); and 4 levels of fertilizers (0:0:0, 25:50:10, 50:100:20 and 75:150:30 g/plant of N:P2O5:K2O). Various plant densities had no adverse effect of plant growth attributes as well as yield index. However, maximum values were obtained in case of lowest plant density except for plant height and total shoot length attributes. Application of fertilizers resulted to a significant increase in plant growth attributes except for plant height and canopy spread. Significant differences were also recorded in the yield index with increasing levels of fertilizers, but brood lac yield and stick lac yield was at par in all fertilizer rates. The results also indicate that a planting spacing of 2.0 x 1.8 m with a fertilizer level of 50:100:20 N:P2O5:K2O g/plant could produce the highest brood and scraped lac per plant and may be considered for raising plantations of A. auriculiformis for lac production as well as harvested biomass with increased productivity.