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Weed Management Strategies under Varied Nitrogen Management Practices in Kharif Maize

Author: Kadiri Saimaheswari, G. Karuna Sagar, V. Chandrika and P. Sudhakar and T. Giridhara Krishna

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Abstract

An investigation was carried out during kharif 2019 and kharif, 2020 on sandy loam soils of dryland farm at S. V. Agricultural College, Tirupati, Andhra Pradesh. The experiment was laid out in split plot design with three replications. Maize hybrid DHM-117 was used in experimentation. The treatments comprised combination of four nitrogen management practices and nine weed management practices. Among the nitrogen management practices, green seeker directed N application (N3) recorded significantly higher values of yield attributes, yield and harvest index during both the years of study as well as in pooled mean. Disregarding nitrogen management practices hand weeding twice at 15 and 30 DAS recorded significantly higher values of yield attributes, yield and harvest index over weedy check. However, this treatment closely followed by application of atrazine 1.0 kg ha-1 as pre emergence fb to pramezone 30 g ha-1 as post emergence, atrazine 1.0 kg ha-1 as pre emergence fb tembotrione 120 g

Keywords

Weed Management, Strategies, Nitrogen Management, atrazine, Kharif Maize

Conclusion

From the present investigation it was revealed that among nitrogen management practices green seeker directed nitrogen application was found to be superior over rest of the treatments. Among various weed management practices, hand weeding twice at 15 and 30 DAS had significant influenced on yield attributes, yield and harvest index of maize but at par with application of low volume herbicides. Further studies take into account of seasonal variation as well as multi-location in view of making concrete recommendations for maize growers.

References

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How to cite this article

Saimaheswari, K., Sagar, G.K., Chandrika, V. and Sudhakar, P. and Krishna, T.G. (2021). Weed Management Strategies under Varied Nitrogen Management Practices in Kharif Maize. Biological Forum – An International Journal, 13(1): 435-439.