Silkworm pupal residue products foliar spray impact in silkworm (Bombyx mori L.)

Abstract

A field experiment was conducted to study the effect of foliar spray of Silkworm pupal residue protein (SPRP) and Silkworm pupal residue extract (SPRE) in mulberry (V1) and silkworm. The experiment was conducted with fourteen treatments and three replications in a randomized complete block design. The results of the study indicated that, significantly higher fifth instar larval weight (38.78 g/10), less fifth instar larval duration(156.58 hours) and less fourth moulting duration (25.63 hours) was recorded when PMXCSR2 worms were fed with leaves grown by the foliar spray of 2% SPRP + RDF + 20MT FYM/ha/year (T6) and it was statistically on par with T8 (SPRE spray @ 1 % + SPRP spray @ 1 % + RDF+ 20MT FYM/ha/year) which recorded 38,00 g/10,157.53 hours and 25.71 hours, respectively. Higher total sugar (2.52 %) and lipid (3.04 %) content was recorded in T6 (foliar spray of 2% SPRP + RDF + 20MT FYM/ha/year). Higher effective rate of rearing (99.10 %) was recorded when the PMX CSR2fed with leaves grown by the foliar spray of 2% SPRP + RDF + 20MT FYM/ha/year (T6).