Ecology, Environment and Conservation Paper

Vol 25, Issue 1 2019; Page No.(48-54)

CHEMICAL MANAGEMENT OF BROAD-LEAVED WEEDS IN IRRIGATED WHEAT

Mozhgan Veisi

Abstract

In order to study the efficacy of Bromoxynil + 2,4-D (Buctril Universal 56 EC) 56 EC) to control the broadleaved weeds in wheat, an experiment was conducted during 2015-2016 in Kermanshah. Treatments were arranged in a randomized complete block design with four replications and 13 treatments. Treatments were application of 2,4-D + MCPA (U46 Cambi 67.5 SL) 1012.5 g a.i. ha-1, Tribenoron-methyl (Granstar 75 DF) 15 g a.i. ha-1, Diflufenican + Mesosulfuron methyl + Iodosulfuron methyl sodium + Mefenpyr-diethyl (Othello 8.25 OD) 132 g a.i. ha-1, Dichloroprop-P + MCPA + Mecoprop-P (Duplosan Super 60 SL) 1500 g a.i. ha-1, Bromoxynil + MCPA (Bromicide MA 40 EC) 600 g a.i. ha-1, Dicamba + 2,4-D (Dailant super 34.4+12 SL) 371.2 g a.i. ha-1, Triasulfuron + Dicamba (Lintur 70 WG) 126 g a.i. ha-1, Bromoxynil + 2,4-D (Buctril Universal 56 EC) at 420, 560, 700, 840, 980 and 1120 g a.i. ha-1. Different factors of weed and wheat including damage of treatments to weeds and wheat based on EWRC scale, weed population reduction was evaluated 30 days after spraying. Grain yield was measured at harvest. Based on the results obtained in kermanshah, Bromoxynil + 2,4-D (Buctril Universal 56 EC) at rate 840 g a.i. ha-1 can control most broad leaf weeds in wheat fields. But, for control noxious weeds such as field bindweed (Convolvulus arvensis) and bedstraw (Galium tricornutum) at 980 g a.i. ha-1 this herbicide recommended.

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