Impact of Integrated Weed Management on Productivity of Bread Wheat and Associated Weeds

Abstract

A field experiment was conducted at a private farm in Sohag, Egypt in 2016-17 and 2017-18 to evaluate chemical weed control, planting method and seeding rate on bread wheat productivity and associated weeds. Weeding treatments were: Pyroxsulam (Pallas) herbicide and the check. Planting methods were: ridges (narrow beds); rows; dry-; and wetbroadcasting. The seeding rates were: 45, 60 and 75 kg/feddan (fed. = 4200 m 2 ). Results revealed that Pallas significantly reduced the biomass of weeds by 91 % vs. the check. Wet seeding resulted in the smallest biomass of weeds vs. the dry methods. Increasing seeding rate from 45 to 75 kg/fed. significantly reduced the biomass of total weeds by 65.8 %. The 75 kg/fed. seed rate + Pallas significantly reduced biomass of weeds. Pallas significantly increased numbers of spikes/m 2 , grains/spike and grain yield vs. the check. Pallas increased grain yield by 5.4 ardab (150 kg)/fed. vs. the check. Ridges planting had superior effect on numbers of spikes/m 2 , number of grains/spike vs. other methods. As for grain yield, ridges method was the first and rows was the second, while wet and dry methods were significantly equal in the third class. The 75 kg/fed. seed rate significantly increased spikes/m 2 and grain yield. Pallas with 75 kg/fed. rate gave the highest values of spikes/m 2 and grain yield. Ridges method with Pallas also produced the highest grain yield. The ridges method seeded by 75 kg/fed. and treated by Pallas produced the highest grain yield of 29.35 ardab/fed. (10.48 t/ha) and could be recommended for producing bread wheat under similar conditions.

Effect of Vegetative Herbicides on the Weed Infestation and the Productivity of Common Winter Wheat (Triticum aestivum L.)

“…Weeds limit yield potential in arid region because they increase evapotranspiration and compete with cereals plants for limited soil moisture (Donald and Easten, 1995), water and light, resulting in grain yield reduction amounted to 7% and 92% and in serious cases may lead to complete crop failure (Abdul-Khaliq and Imran, 2003). Use of aggressive cultivars can be effective cultural practice for weed growth suppression (Seavers and Wright, 1999).…”