Evaluation of different herbicide application on the nutrient uptake of spring planted sugarcane (Saccharum officinarum L.) in Varanasi

A field experiment was conducted during the year 2018-2019 at Agriculture Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (Uttar Pradesh) to Evaluation of different herbicide application on the nutrient uptake of spring planted sugarcane (Saccharum officinarum L.) in Varanasi. The treatments comprises viz. Halosulfuron methyl 6% + Metribuzin 50% WG PE @ 1.0 kg a.i. ha-1, Halosulfuron methyl 6% + Metribuzin 50% WG PE@ 1.125 kg a.i. ha-1, Halosulfuron methyl 6% + Metribuzin 50% WG PE@ 1.25 kg a.i. ha-1, Halosulfuron methyl 75% WG -PE@ 0.09 kg a.i. ha-1, Metribuzin 70% WP-PE@ 2.0 kg a.i. ha-1, Halosulfuron methyl 6% + Metribuzin 50% WG-POE@ 1.0 kg a.i. ha-1, Halosulfuron methyl 6% + Metribuzin 50% WG-POE@ 1.125 kg a.i. ha-1, Halosulfuron methyl 6% + Metribuzin 50% WG-POE@ 1.25 kg a.i. ha-1, Halosulfuron methyl 75% WG –POE@ 0.09 kg a.i. ha-1, Metribuzin 70% WP-POE@ 2.0 kg a.i. ha-1, 2,4-D Dimethyl amine salt 58% SL-POE@ 6.0L. ha-1, Hand weeding (30,60 and 90 DAP) and untreated control was laid out in randomized block design with replicate thrice. The highest uptake of N, P and K was noticed in crop given three hand Weedings at 30, 60 and 90 DAP, In herbicidal treatment application with halosulfuron methyl 6% + metribuzin 50% WG 1.25 kg ha-1 POE recorded significantly higher uptake of nutrient. However, the lowest nutrient uptake by cane stalk, green top and trash was recorded under the untreated plot.