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Effect of Transplanting Date and Integrated Weed Management on Growth, Phenology and Yield of Black Rice (Oryza sativa L.) under SRI

Author: Dolie S., Nongmaithem D., Nakhro A. and Gadi Y.

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Abstract

Delayed transplanting and excessive weed growth cause huge reduction in yield and quality parameters due to higher spikelet sterility and poor plant growth under unfavourable temperature regime and intermittent irrigation practice in system of rice intensification. In this context, a field experiment was conducted to study the effect of transplanting date and integrated weed management on growth, phenology and yield of black rice (Oryza sativa L.) under SRI at the experimental farm of SASRD, Nagaland University, Medziphema campus during the kharif season of 2019 and 2020. The experiment was laid out in split plot design with three transplanting dates in the main plots and five integrated weed management in the sub-plots and replicated thrice. Transplanting on 15th June recorded significantly highest growth attributes, maximum days to 50% flowering, days to 50% physiological maturity, days to maturity and yield of black rice. Among the integrated weed management, pretilachlor @ 0.75 kg ha-1 at 3 DAT fb hand weeding at 40 DAT gave significantly highest growth attributes, phenology and yield of black rice.

Keywords

Black rice, hand weeding, integrated weed management, phenology, transplanting date, yield

Conclusion

From the above experiment, it can be concluded that transplanting black rice on 15th June with combined application of pretilachlor @ 0.75 kg ha-1 at 3 DAT fb hand weeding at 40 DAT recorded highest growth, phenology and yield of black rice and found to be the best transplanting date and efficient weed management practices for increasing the yield of black rice under SRI.

References

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How to cite this article

Dolie S., Nongmaithem D., Nakhro A. and Gadi Y. (2023). Effect of Transplanting Date and Integrated Weed Management on Growth, Phenology and Yield of Black Rice (Oryza sativa L.) under SRI. Biological Forum – An International Journal, 15(4): 313-319.