Sami Publishing Company (SPC) Journal of Research in Weed Science 2651-4699 2 2 2019 06 01 Bioefficacy of post-emergence herbicide Prioxofop-Propanyl (Markclodina) against weeds in wheat 141 148 82674 10.26655/jrweedsci.2019.3.5 EN Sachin Kumar Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur. India. SS Rana Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur. India. D Badiyala Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur. India. Suresh Kumar Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur. India. Neelam Sharma Department of Chemistry and Biochemistry, CSK HPKV, Palampur. India. Journal Article 2019 01 10 A field study was carried out to evaluate the efficacy of Prioxofop-Propanyl 15% WP (Markclodina) herbicide for wider weeds range in wheat crop during Rabi 2015-16. Six treatments including four herbicides treatments <em>viz.</em> Pendimethalin at 1.0 kg/ha, Clodinafop at 0.060 kg/ha, Markclodina at 0.060 kg/ha, Isoproturon + 2, 4-D at 1.0+0.5 kg/ha along with hand weeding twice (30 and 60 DAS) and one weedy check were used. <em>Avena ludoviciana</em> (34.30 %) and <em>Phlaris minor </em>(25.26 %) were the most dominatinggrassy weeds. New test herbicide Markclodino had better efficacy in controlling <em>Phalaris minor</em>,<em> Avena fatua </em>and<em> Lolium </em><em>temulentum</em>as evidencedfrom significantly less number of weeds at all the stages of observations. The highest weed control efficiency (80.5 %) was recorded with post emergence application of Markclodina 0.060 kg/ha at 90 DAS. The application of markclodina at 0.06 kg/ha remaining at par with clodinofop propargyl (market sample) at 0.06 kg/ha, isoproturon + 2,4-D at 1.0 + 0.5 kg/ha produced significantly higher grain yield. The magnitude of increase in yield due to Markclodina over weedy check was 68.9 %. Field demonstrations on the performance of Markclodina under various locations showd that there was maximum 19.7 % increase in grain yield over control at distt. Hamirpur (Himachal Pradesh). https://www.jrweedsci.com/article_82674_36e42c9fcb7b2b46542a63df74348a0b.pdf