Vol. 15 No. 3
Efficacy of pendimethalin against resistant little seed canary grass as affected by soil moisture and formulation
Author(s): M. KAUR, S.S. PUNIA, J. SINGH AND S. SINGH
Abstract:
A pot study was conducted at CCSHAU, Hisar during the winter seasons of 2014-15 and 2015-16 to evaluate the effect of soil moisture (75 and 100% of field capacity) on the efficacy of two formulations of pendimethalin i.e. emulsifiable concentrate and capsule suspension applied as pre-emergence (alone) and post-emergence (tank-mix with metribuzin) against resistant and sensitive populations of P. minor. Results revealed that the Emulsifiable concentrate formulation of pendimethalin when applied as pre-emergence had reduced control of resistant and sensitive P. minor populations at 75% of field capacity as compared to control. Capsule suspension formulation of pendimethalin sprayed as pre-emergence gave absolute control of sensitive as well as resistant P. minor at both the field capacity based soil moisture treatments. Both the formulations applied as post-emergence (tank-mix with metribuzin) exhibited similar response as that of individual application. The results are of practical significance in field when dry soil conditions are a concern.
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