2024, Vol. 7, Issue 2, Part A

author(s)
Nishita Sharma, Dr. BK Pandey and Dr. Ashish Tiwari

abstract
A field experiment was carried out in the 2022–2023 rabi season by the School of Agricultural Sciences at Dr. K. N. Modi University in Newai. The study's objective was to investigate the effects of several herbicides on wheat's growth and yield characteristics. The trial employed six treatment combinations: control, manual weeding, 2-4 D spray at 25 and 50 DAS, tribuzing spray at 25 and 50 DAS, methylfuran spray at 25 and 50 DAS, and a combination of isoproturon 1.0 and 2-4 D at 0.5 kg/ha. Three replications and an RBD layout characterised the experiment. The experimental study's various weed control strategies had no discernible impact on either the starting or end plant populations. The pesticides used after emergence. T₅ (Metsulfuron spray at 25 and 50 DAS), T₂ (manual weeding), and T₄ (Metribuzin spray at 25 and 50 DAS) were the other herbicidal treatments that showed the highest tiller count, which was found under T₃ (2-4 D spray at 25 and 50 DAS). Dry matter buildup was highest in the T₆ (Mixture of Isoproturon 1.0 + 2-4 D @ 0.5 kg/ha) plot. although T₃ (2-4 D spray at 25 and 50 DAS) was significantly less than T₅ (Metsulfuron spray at 25 and 50 DAS), T₂ (manual weeding), and T₄ (Metribuzin spray at 25 and 50 DAS). T₆ (weed-free) had the largest spike length, statistically comparable to T₃ (2-4 D spray at 25 and 50 DAS). T₅ (Metsulfuron spray at 25 and 75 DAS) came in second. The highest grain count, earhead-1, was observed in T₆ (1.0 + 2-4 D @ 0.5 kg/ha) is the isoproturon. In the T₆ (Isoproturon 1.0 + 2-4 D @ 0.5 kg/ha) plot, the maximum test weight was noted. T₃ showed the highest grain yield (Spray 2-4 D at 25 and 50 DAS). T₃ showed the maximum yield of grains (2-4 D spray at 25 and 50 DAS). T₁ (Control) recorded the largest amount of nutrients absorbed by the crop, followed by T₃ (2-4 D spray at 25 and 50 DAS) and T₅ (Metsulfuron spray at 25 and 50 DAS). T₃ (Spray 2-4 D at 25 and 50 DAS) generated the greatest net returns, and T₆ and T₅ (Metsulfuron spray at 25 and 50 DAS) came in second and third, respectively. T₃ (2-4 D spray at 25 and 50 DAS) plots had the highest benefit-cost ratio.