Vol. 9, Issue 10, Part A (2025)

The present investigation entitled “Effect of Plant Growth Regulators and Supplement Treated Mulberry on Economic Traits of Mulberry Silkworm (Bombyx mori L.)” was conducted during 2024-25 at the Sericulture Research Unit, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, to evaluate the impact of plant growth regulators and supplements on cocoon quality and silk productivity. The experiment was laid out in a completely randomized design with ten treatments and three replications, using bivoltine race FC₂ × FC₁ reared on mulberry variety V1. Among the treatments, Seriboost @ 7 ml/L (T₃) recorded the highest single cocoon weight (1.70 g), shell weight (0.37 g), shell ratio (21.81%), longest filament length (980 m), and maximum filament weight (0.28 g), while the control (T₁₀) showed the lowest values with single cocoon weight (1.50 g), shell weight (0.31 g), shell ratio (20.62%), filament length (800 m), and filament weight (0.21 g). GA₃ @ 50 ppm (T₇) exhibited the highest silk yield (18.77 kg) with a denier value of 2.71, whereas the control registered the lowest silk yield (14.66 kg) with a denier of 2.55. These findings clearly demonstrate that plant growth regulators and supplements significantly enhanced economic traits of mulberry silkworm, with Seriboost @ 7 ml/L proving most effective for cocoon quality improvement, while GA₃ @ 50 ppm excelled in silk yield.