Impact of Integrated Nutrient and Weed Management on Yield Parameters and Yield of Zero Till Maize

Author: K. Naganjali, K.P. Vani, M. Madhavi, P. Surendra Babu and S. Narender Reddy

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Abstract

A field investigation was carried out during rabi, 2016-17 and 2017-18 at College Farm, Agricultural College, Aswaraopet, Bhadradri Kothagudem Dist. in sandy clay loam soil to evaluate and suggest suitable nutrient and weed management practice for zero tillage maize. During rabi, maize was grown under zero tillage in sequence to semi dry rice and followed three nutrient treatments {100% RDF, 75% RDF + 25% N through vermicompost and 75% RDF + 25% N through FYM} and four weed management practices {Control, Atrazine 50 WP 500 g a.i ha-1 + Paraquat 24 SL 0.6 kg a.i ha-1 fb 2,4 – D 0.5 kg a.i ha-1 at 25 DAS, Atrazine 50 WP 500 g a.i ha-1 fb (Topramezone 0.03 kg a.i ha-1 + Atrazine 50 WP 500 g a.i ha-1) at 25 DAS and Topramezone 0.03 kg a.i ha-1 + Atrazine 50 WP 500 g a.i ha-1 at 15 DAS fb intercultivation / HW at 35 DAS – Farmer’s Practice} were imposed in maize as sub plot treatments in split plot design which were replicated thrice. Significantly, enhanced yield components viz., no. of grains row-1, no. of grain rows cob-1, total no. of grains cob-1, cob weight, cob yield and grain and stover yield of maize were noticed with 75% RDF + 25% N through vermicompost and was at par with 75% RDF + 25% N through FYM in contrast to 100% RDF. Topramezone 0.03 kg a.i ha-1 + Atrazine 50 WP 500 g a.i ha-1 at 15 DAS fb intercultivation / HW at 35 DAS – Farmer’s Practice registered significantly higher yield parameters and yield while lower values were observed with control in zero till maize. Interaction effect of nutrient and weed management practices on yield parameters, grain and stover yield of zero till maize was found to be non-significant.

Keywords

Nutrient, weed, yield attributes, grain yield, stover yield, zero till maize

Conclusion

Maize grown under zero till condition after semi dry rice resulted in enhanced yield parameters viz., cob length, cob girth, number of grains row-1, number of grain rows cob-1, number of grains cob-1, cob weight, cob yield, test weight, cob weight, grain and stover yield with 75% RDF + 25% N through vermicompost. Among different weed management practices imposed in zero till maize, S4 [Topramezone 0.03 kg a.i ha-1 + Atrazine 50 WP 500 g a.i ha-1 at 15 DAS fb intercultivation / HW at 35 DAS – Farmer’s Practice] recorded higher yield attributes.

References

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How to cite this article

K. Naganjali, K.P. Vani, M. Madhavi, P. Surendra Babu and S. Narender Reddy (2023). Impact of Integrated Nutrient and Weed Management on Yield Parameters and Yield of Zero Till Maize. Biological Forum – An International Journal, 15(2): 485-492.