The application of phytojuvenoid on Bombyx mori larvae has been proved to be significance inthe sericulture industry. Variation in the phytojuvenoid concentration significantly (P1<0.01) influencedthe reproductive potential ofB. moriin terms of fecundity and hatchability of eggs. The fecundity andhatchability increased with the increasing number of larval treatment of 10, 20 and 30%phytojuvenoidconcentration. The maximum level of fecundity (365±5.60 eggs) and hatchability (97.22±0.98 %) was noticed incase of triple treatment by 30% phytojuvenoidconcentration. The minimum level of fecundity and hatchabilitywas noticed in case of triple treatment by 40% phytojuvenoid concentration. The larvae were treated withthe phytojuvenoidconcentration (obtained from Pinus needle extract) of 10, 20, 30 and 40% just aftermoulting,four phytojuvenoid concentrations were applied topically by spraying on larvae separately. Three sets ofexperiments were designed. A control set was always maintained with each set of experiment.Phytojuvenoidhormone interactions when applied tactfully may be useful for boosting up the sericulture industry as wellas the economy of silkworm rearing.
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