Integrated Use of 2,4-D, Metribuzin, and Pyrazosulfuron-Ethyl (UPH 114b) for Managing Weeds and Improving Sugarcane Yield in Subtropical India

A field experiment was conducted with eight treatments of weed management involving integrated and sole applications of 2,4-D, metribuzin, and pyrazosulfuron-ethyl along with weed-free and weedy check practices. The experimental treatments were replicated three times in a randomized block design. Applying integrated product of 2,4-D, metribuzin, and pyrazosulfuron-ethyl effectively managed the grassy (Cynodon dactylon, Eleusine indica, Echinochloa crusgalli, and Digitaria spp.) and broad-leaved weeds (Trianthema monogyna, Chenopodium album, Anagallis arvensis, Melilotus alba, Parthenium hysterophorus, and Bidens frondosa). The higher weed density (124.7 per m2) in weedy check plots was recorded during the first cropping season than 2nd cropping season (118.22/m2). Total weed dry weight was also significantly reduced at the lowest level (43.39 g/m2 during 2019–2020 and 75.70 g/m2 during 2020–2021) with the application of integrated product of 2,4-D, metribuzin, and pyrazosulfuron-ethyl @ 3200 g ai/ha. However, the weed control efficiency (77.57