Effect of Nano Nitrogen Foliar Spray to Tree Mulberry on Growth and Cocoon Productivity of Mulberry Silkworm (Bombyx mori L.)

Author: Goutam S.M., Raje Gowda, Manjunath Gowda, G.G. Kadlli, Chandrashekhar Kallimani, Sanketh C.V., Arunkumar B.R. and Prem Kishor S.N.

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Abstract

A field experiment was conducted during 2020-21 on established Victory-1 (V-1) tree mulberry garden at Krishi Vigyan Kendra, Hassan situated in the Southern Transition Zone (Zone-7) of Karnataka to study the influence of nano nitrogen foliar application to tree mulberry on silkworm growth and cocoon productivity. The experiment was laid out in RCBD, comprising seven treatments replicated thrice. The results revealed that, significantly shorter 5th instar duration (7.29 days), higher 5th instar larval weight (54.69 g/10 larvae), ERR (97.33%), cocoon yield by number (9666.67 per 10,000 worms), cocoon yield by weight (25.15 kg per 10,000 worms), single cocoon weight (2.58 g), single cocoon shell weight (0.58 g), single pupal weight (2.00 g), cocoon shell ratio (22.55 %), longest filament length (1435.44 m) and filament weight (0.51 g) were observed from the silkworm batches fed with leaves harvested from the plot provided with 4 ml L-1 nano nitrogen foliar application on 25th and 35th day after pruning with soil application of 60 per cent N, 100 per cent P and K with recommended FYM (T3). The research is conducted as a part of my Master’s degree, so I am not able to conduct the research on all verities of mulberry and strains of silkworms. By spraying nano nitrogen will improves the yield substantially, through production of higher leaf yield and harvesting of good quality cocoons.

Keywords

Nano nitrogen, foliar spray, tree mulberry, silkworm, feeding

Conclusion

It can be concluded that with the foliar application of nano nitrogen to tree mulberry. Among all treatments T3: 100 % PK + 60 % N (RDF) soil application + nano N foliar spray @ 4 ml L-1 showing the better results compare to all others, with regards to larval duration, larval weight, ERR, cocoon number and weight, Cocoon parameter and Reeling parameters of mulberry silkworm hence following T3: 100 % PK + 60 % N (RDF) soil application + nano N foliar spray @ 4 ml L-1 in cultivation of mulberry is optimum.

References

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How to cite this article

Goutam S.M., Raje Gowda, Manjunath Gowda, G.G. Kadlli, Chandrashekhar Kallimani, Sanketh C.V., Arunkumar B.R. and Prem Kishor S.N. (2023). Effect of Nano Nitrogen Foliar Spray to Tree Mulberry on Growth and Cocoon Productivity of Mulberry Silkworm (Bombyx mori L.). Biological Forum – An International Journal, 15(5): 180-186.