Influence of Macro- and Micro-Fertilizers on Silkworm Economic Parameters
M. Devamani*
Centre for Higher Studies in Botany and Sericulture (Periyar University), Vaikkalpattarai, Salem, Tamil Nadu (636 017), India
N. Dahira Beevi
Centre for Higher Studies in Botany and Sericulture (Periyar University), Vaikkalpattarai, Salem, Tamil Nadu (636 017), India
A. Mohan
Kandaswami Kandar's College, Velur, Namakkal, Tamil Nadu (638 182), India
DOI: https://doi.org/10.54083/PHA/2.2.2024/41-47
Keywords: Inorganic fertilizers, Panchagavya, Poshan, Silkworm, V1 mulberry variety
Abstract
An intensive research was carried out during 2018-2022 at the Regional Sericultural Research Station, Salem, Tamil Nadu. The research focused on assessing the significance of micronutrients and their effects on the growth, moisture content, yield parameters and nutrient composition of mulberry leaves. The combined results indicated that treatments T2 and T3 exhibited higher larval weight, shell weight, rendita and denier, with values of 42.90 g, 0.42 g, 6.14 kg and 2.33 d, respectively. Treatment T5 also showed promising results, with larval weight of 42 g, shell weight of 0.38 g, rendita of 6.2 kg and denier of 2.65 d. In terms of single cocoon weight, treatment T3 had the highest value of 1.88 g, closely followed by T2 with 1.86 g. Regarding shell ratio and silk filament length, T2 exhibited higher values (22.58% and 1103 m) compared to T3 (22.55% and 1099 m). Among the five crops studied, the fourth crop demonstrated the best results when treated with T2 and T3. These treatments resulted in higher larval weight (51.37 g and 51.6 g), cocoon weight (2.2 g and 2.3 g), shell weight (0.56 g and 0.55 g), shell ratio (25% and 24.67%), pupal weight (1.65 g and 1.71 g), silk filament length (1416 m and 1412 m), rendita (6 kg) and denier (2.46 d and 2.79 d) respectively.
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