Vol. 10, Issue 7 (2021)

Author(s):
Raghvendra Singh, Ravi Shankar Singh, Kuldeep Singh and Vishal Singh

Abstract:
The investigation was conducted at Agronomy Research Farm, Acharya Narendra Deva University of Agriculture and Technology. Kumarganj, Ayodhya (U.P.) during Rabi season of year 2017-18 and 2018-19. The experiment was laid out in Randomized Block Design with three replication. The experiment was carried out with 12 treatments viz.: T₁- Imazethapyr + imazamox (PRE), T₂- Imazethapyr+ imazamox (POE) at 3-4 leaf stage, T₃- Imazethapyr (POE) at 3-4 leaf stage, T₄- Quizalofop ethyl (POE) at 3-4 leaf stage, T₅- Clodinofop (POE) at 3-4 leaf stage, T₆- Pendamethalin (PE), T₇- Pendamethalin (PE)+ Imazethapyr (POE), T₈- Oxyfluorfen (PE), T₉- Oxyfluorfen (PE)+ Quizalofop (POE), T_10- 1 Hand Weeding at 35-40 DAS, T₁₁- Weed Free and T₁₂- Weedy Check respectively. The objective of the study was to study the bio-efficacy of herbicides and cultural practices on weed control. On the basis of the experiment it may be concluded that pre-emergence application of pendimethalin 1000 g ha^-1 along with post-emergence application of either Imazethapyr proved superior over rest of the treatments with respect to weed control efficiency. Weed control efficiency was recorded highest with pendimethalin 1000 g and oxyfluorfen 200 g ha-1 as PE when supplemented with the sequential application of Quizalofop or imazethapyr g ha-1 as PoE each in both of the pre-emergence herbicides (T6 & T7/T8 & T9) over single application of either pendimethalin 1000 g or oxyfluorfen 200 g ha-1 as PE.