Vol. 19 No. 2
Control of mixed weed flora with pre- and post-emergence imidazolinone herbicides in garden pea
Author(s): S. KAUR, T. KAUR, C. SHYAM AND M. S. BHULLAR
Abstract: Vegetable pea is a cool season vegetable crop in northern India and frozen pea has vast export potential. It has slow initial growth and infestation of various grasses and broadleaf weeds lead to reduction in pod yield. Field experiment was conducted for consecutive three rabi seasons during 2014-15 to 2016-17 to study the bio-efficacy of different formulations of imidazolinone herbicides and standardize the dose of imazethapyr, pendimethalin plus imazethapyr and imazethapyr plus imazamox. All imidazolinone formulations were safe to crop and resulted in variable weed control efficiency. Pre-emergence application of pendimethalin plus imazethapyr 800-1000 g ha-1 resulted in 86-91% weed control efficiency at harvest. Cyperus rotundus, Medicago denticulata and Oenothera laciniata were not controlled with pendimethalin and premix of pendimethalin plus imazethapyr. Imazethapyr and imazethapyr plus imazamox 60-70 g ha-1 resulted in green pod yield of 15.8 t and 16.9 t ha-1, respectively.
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