1Dept. of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal (741 252), India
2Dept. of Agronomy, School of Agriculture, Seacom Skills University, Kendradangal, Birbhum, West Bengal (731 236), India
The present experiment was carried out during summer seasons (February to May) of 2020 and 2021 at the Instructional Farm of Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India to assess the impact of nano-fertilizer managements on the summer hybrid maize. The experiment was laid down in a randomized block design replicated thrice with ten treatments having nano-N, nano-Zn, nano-Cu at different days of spraying in combinations with recommended Dose of Fertilizers (RDF). Results revealed that application of 50% RDZn and 100% N-P-K along with two-foliar sprays of Nano-Zn @ 4 ml l−1 at 25 and 50 DAS (T8) recorded better results of growth attributes. The yield attributes like number of cobs plant−1 (1.30), cob length (21.30 cm), cob girth (16.25 cm), number of rows cob−1 (13.97), number of grains cob−1 (317.6), seed index (25.40 g) and single cob weight (128.74 g) also found highest from the same treatment. Higher grain (8.16 t ha−1) and stover yield (12.22 t ha−1) were recorded in T8 treatment and yield variation was 2.21 to 63.86% over control with highest benefit-cost ratio (2.35). Hence, application of 50% RDZn and 100% N-P-K along with two-foliar sprays of Nano-Zn @ 4 ml l−1 at 25 and 50 DAS may be most effective in augmenting yield, available nutrient status and economics of summer maize.
Economics, Growth, Nano-fertilizer, Summer hybrid maize, Yield
