1ICAR-Indian Agricultural Research Institute, New Delhi110012, India
2ICAR-Indian Institute of Pulses Research, Kanpur, Uttar Pradesh208024, India
3Chandra Shekhar Azad University of Agriculture & TechnologKanpur, Uttar Pradesh208002, India
4ICAR-Indian Institute of Sugarcane Research, Lucknow, Uttar Pradesh226002, India
5ICAR-Central Potato Research Station, Shillong, Meghalaya793 009, India
*Email: sanjaybhu05@rediffmail. com
A field experiment was conducted during 2013-14, 2014-15 and 2015-16 at ICAR-Central Potato Research Station, Shillong to evaluate the bio-efficacy of weed management practices in rainfed potato under North-Eastern hill region of India. Maximum potato tubers yield (21.3 t/ha) was recorded under weed free treatment followed by metribuzin application 0.75 kg/ha as a pre-emergence (PE). Reduction in crop yield due to presence of weeds was 54.0 per cent. Maximum uptake of nutrients, viz. nitrogen (113.2 kg/ha), phosphorus (14.5 kg/ha) and potassium (89.4 kg/ha) were recorded by the potato under weed free fb application of metribuzin 0.75 kg/ha as a PE. The highest net returns (₹ 176100/ha) and B:C ratio (2.3) were recorded under the metribuzin application 0.75 kg/ha. Thus, application of metribuzin 0.75 kg/ha as PE was found more effective in potato under the rainfed ecosystem of North-Eastern hill region of India.
Herbicide, Metribuzin, Potato, Tuber crop, Article information
