IMPACT OF WHEAT (TRITICUM AESTIVUM L.) SEED CLEANING, HERBICIDES, AND THEIR INTERACTIONS ON WEED CONTROL, YIELD, AND YIELD COMPONENTS IN TWO DIFFERENT LOCATIONS

Abstract

A factorial experiment (2 × 5) was applied according to Randomized Complete Block Design (RCBD) with four replications in two different locations, Qlyasan and Kani Panka in Sulaimani Governorate, Kurdistan Region of Iraq, during the winter season of 2018-2019. The objectives were to determine the effects of wheat (Triticum aestivum L.) seed cleaning (factor 1), weed control treatments (factor 2) and their interactions on weed control, wheat yield and yield components at two different locations. Seed cleaning decreased weed dry weight and increased number of spikes m-2, number of grains spike-1, weight of 1000 grains, grain yield m-2 and weed control efficiency significantly. Hand weeding and herbicides mixture decreased weed dry weight and increased grain yield.m-2 with some yield parameters, and weed control efficiency significantly. The interactions between locations and seed cleaning decreased weed dry weight, and increased grain yield and yield components and weed control efficiency significantly. Interactions between seed cleaning and weed control treatments decreased weed dry weight and increased grain yield m-2, yield components, and weed control efficiency significantly. The triple interactions between locations, seed cleaning and herbicide mixture decreased weed dry weight and increased number of spikes m-2 1000 grains weight, grain yield m-2 (6.36 t.ha-1) and weed control efficiency significantly.