Pre and Post-emergence Herbicides for the Control of Resistant Phalaris minor in Wheat

Author: Ghulam Sakhi Qazizada, Todar Mal, Sushil Kumar* and Pardeep Kumar

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Abstract

Continuous use of herbicides with same mode of action resulted in the development of multiple herbicide resistance in Phalaris minor threatening the sustainability of rice-wheat system in northern India. In this context, field study was conducted in rabi season 2018 at CCS Haryana Agricultural University, Hisar in randomized block design with three replications and seventeen treatments having different combinations of pre and post emergence herbicides, their mixture and seed treatment with Bacillus subtilis strain SYB 101. The result showed that application of pendimethalin @ 1000 g ha-1 (JAS) fb pinoxaden + metribuzin (tank mix) @ 50 + 105 g ha-1 at 35 DAS resulted in minimum dry matter accumulation of Phalaris minor (11.0 g), highest grassy weed control efficiency (81.8 %) at 90 DAS, maximum numbers of effective tillers (92.0 m-1 row length), grains spike-1 (59.9), 1000 grains weight (42.7 g) and highest grain, straw and biological yield (5761 kg ha-1, 8202 kg ha-1 and 13963 kg ha-1

Keywords

Phalaris minor, pre and post-emergence herbicides, wheat

Conclusion

Based on the experiment it can be conclude that successive herbicide applications and herbicide combinations resulted in decreased weed density, weed dry weight, and higher weed control efficacy as compared to PoE herbicide application alone. Sequential application of pendimethalin 1000 g ha-1 (JAS) fb pinoxaden + metribuzin (tank mix) 50 + 105 g ha-1 at 35 DAS was found to be the most effective herbicidal treatment, yielding about 60% more grain than the weedy control.

References

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How to cite this article

Ghulam Sakhi Qazizada, Todar Mal, Sushil Kumar* and Pardeep Kumar (2022). Pre and post-emergence herbicides for the control of resistant Phalaris minor in wheat. Biological Forum – An International Journal, 14(1): 1296-1302.