EFFECT OF MULBERRY SHOOTS BIOCHAR APPLICATION ON PRODUCTION OF MULBERRY LEAF AND SILK COCOON
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Date
2023-01-24
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Abstract
A study on “Effect of mulberry shoots biochar application on production of mulberry leaf and silk cocoon” was conducted in the established V-1 tree mulberry garden at KVK, Hassan during 2022. Comprised of 10 treatments replicated thrice in RCBD. The experimental results revealed that combined application of 100 per cent NPK+ FYM @ 10 tha-1 + Biochar @ 15 t ha-1y-1 to soil significantly higher water holding capacity (49.34%), pH (6.87), electrical conductivity (0.23 dS m-1), primary, secondary and micronutrients content of soil over 100 per cent NPK+ FYM@ 20 t ha-1 (package of practice). The treatment also significantly enhanced the growth, yield parameters, biochemical parameters, elemental compositions of tree mulberry leaves. Further, feeding mulberry leaves obtained by application of 100 per cent NPK+ FYM @ 10 t ha-1 + Biochar @ 15 t ha-1y-1 recorded significantly shorter fifth instar larval duration (7.76 days), higher fifth instar larval weight (53.21 g/10 larvae), effective rate of rearing (95.27%), cocoon weight (2.63 g), cocoon shell weight (0.59 g), pupal weight (2.04 g), filament length (1499.06 m), filament weight (0.48 g) and obtained higher net returns per hectare (Rs. 1,71,888. ha-1 crop-1). However, the B:C ratio (3.04) was recorded marginally lower in the treatment received 100 per cent recommended NPK+ FYM@ 10 t ha- 1 + Biochar @ 15 t ha-1y-1 when compared to treatment received 100 per cent recommended NPK+ FYM@ 10 t ha-1 + Biochar @ 10 t ha-1y-1 (3.08) and found to be cost effective as compared to other treatments.
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