Influence of Nano Nitrogen on Yield and Quality of Potato under Humid, Sub-Tropical Region of West Bengal, India

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Potato (Solanum tuberosum L.) is the fourth most important food crop globally and served as a staple food in western countries. Recently, nanotechnology-based farming has gained much attention for improving nutrient use efficiency, maximizing yields and environmental sustainability. A field experiment on potato variety 'Kufri Jyoti' were conducted with 11 treatments considering RBD design with combinations of conventional nitrogen fertilizer and nano-urea. The study evaluated the effects treatments like T1 = 0 % N (Control), T2 = RDF (NPK@200:150:150 kg ha-1), Conventional fertilizer i.e. 0 % N, 25% N, 50% and 75% of different combination with Nano-Urea sprayed at various dosage to find out the yield, quality parameters and economic returns. Results indicated that the combined application of conventional (75%) N and twice spray of nano-Urea 6ml/lit (T9) produces the highest economical yield (26.79 t ha-1) and confirms 76.64 % increase in yield over the control. Highest haulm fresh yield (22.63 t ha-1) was found in T9 treatment. Though, haulm dry yield, tuber dry yield and biological yield was also associated highest with T9 treatment i.e. 4.70, 5.83 and 49.42 t ha-1 respectively and highest harvest index (%) was observed in T7 (54.27) treatment. Carbohydrate and starch content of tuber showed minor variation, whereas protein content was significantly higher (22.65%) than the control. Although the highest benefit-cost ratio (2.28) was observed in T3 followed by T9. After systematic analysis the T9 (75% Nano spray 6ml/lit twice) treatment significantly overcame the better combination among all the treatment combination. While these 75:25 ratio of conventional and nano fertilizer had better nutrient absorption with minimum loss improving potato cultivation.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.