Investigation on Herbicides Efficacy to Weeds Control in Lentil (Lens culinaris Med.)

Subject Areas : Semi Annual Journal of Weed Ecology

Abolreza  Ahmadi ¹ (Associate Professor, Department of Plant Protection, Lorestan University)
Said Karim  Mousavi ² (Associate Professor Plant Protection Research Department, Lorestan Agricultural and Natural Resources Research and Education Center, AREEO, Lorestan, Iran)
Mahdi  Rastgo ³ (Associate Professor, Department of Plant Breeding, Ferdowsi University)
Mozhgan  Bieranvandi ⁴ (Ph.D. Student in Crop Ecology, Agricultural College, Lorestan University)

Received: 2016-03-07 Accepted : 2017-06-01 Published : 2016-08-26

Keywords:

Abstract :

In order to study the effect of herbicides [Ethalfluralin EC3.33% (3L ha-1), Trifluralin EC48% (2 L ha-1), Pendimethalin EC33% (2.5 L ha-1), Imazethapyr SC10% (1L ha-1), Metribuzin WP 70% (1kg ha-1), Simazine (1kg ha-1), Prometryn (1kg ha-1), simazine plus prometryn (0.5+0.5 kg ha-1) and weedy check and two times weeding in lentil an experiment was conducted as randomized completely block design with 12 treatments and 3 replications at Korramabad in 2013. The most important weed species in the experiment were Safflower ((Carthamus oxyocantha M. Bieb)), Catchweed bedstraw (Galium tricornutum subsp.), Wild mustard (Sinapis arvensis L), Cow cockle (Vaccaria grandiflora (Ser.) Jaub. & Spach),Chickweed (Conringia orientalis (L.) Dumort.). The average of weed density in weedy control condition was 133 plant m2. By investigation of effects of different herbicides on these weeds became clear that treatment imazethapyr (0.75L ha-1 ) with 99 percent reduction in the number of weeds compared with weedy check treatment, was the best treatment and pendimethalin (3.5L ha-1) with 6.7 percent efficacy in weed control was the worest. Based on this results among whole of herbicides that those use in this expriment only metribuzin(1kg ha-1) had significantly phytotoxic effect on lentil. So, for weed control in lentil farm is not recommended.