Puneet Kumar Chhokar, Umesha C., Kailash Prajapat, Vishnu and Preeti Yadav
Abstract
Phalaris minor Retz., a grassy weed, poses a significant threat to wheat production in the northwestern Indian plains due to its growing resistance to herbicides. The paper explores the effectiveness of pre emergence (PE) herbicides for managing herbicide-resistant Phalaris minor in wheat fields. It highlights the promising results of combining pyroxasulfone with flumioxazin at the rate 127.5 g/ha +100 g/ha, which effectively controlled Phalaris minor population (14.7 m-2) and dry weight (5 g m-2), along with higher grain (63.7 q/ha) and straw yield (116.2 q/ha). Although it was comparatively less effective against broad-leaved weeds like Medigaco denticulata and Rumex dentatus. However, it still recorded lowest total weed density and dry weight among all the herbicidal treatments used in the investigation. The study emphasizes the judicious herbicide use to prevent further resistance development. This information can guide farmers and researchers in developing sustainable solutions for managing herbicide-resistant Phalaris minor in wheat fields of northwestern India.