Roles of Planting Methods, Irrigation Techniques and Weed Control Treatments in Wheat Crop Performance, Associated Weeds and Water Productivity

Abstract

A field trial was executed at Gemmeiza during 2014/2015 and 2015/2016 winter seasons. The experiment aiming at finding the response of wheat crop and the associated weeds to planting methods vis Raised Bed Broadcasting (RBB), Flat in Rows (FR) and Flat Broadcasting (FB), irrigation techniques (irrigating as 40, 60 and 80% of available soil moisture were depleted) and weeding treatments (Pallas, Atlantis, Brominal w + Topik, Hand weeding and Un-weeded (Control) as well as their interactions. The crop-water relationships e.g. water use and water productivity were considered. The adopted treatments were assessed in split-split plot experimental design with 3 replicates, where planting methods, irrigation techniques and weed control treatments were represented in main, split and split-split plots, respectively. The main findings were as follows:1-Raised Bed Broadcasting (RBB), comparable with FR or FB ones, resulted in reduced fresh weight values of grassy, broad-leaved and total annual weeds, and on the other side, enhanced tillers No. plant-1 , plant height, 1000-grain weight, straw and grain yields. In addition, lower Water consumptive use values were detected with RBB, and averaged 14.71 and 18.22% over the two seasons, respectively, lesser than those with FR and FB. Water Productivity under RBB were increased, and averaged 42.73 and 31.95% over the two seasons, respectively, comparable with FR and FB techniques. 2-Irrigating at 80% ASMD regime exhibited lower values of grassy, broad-leaved and total annual weeds fresh weight, comparing with 40 and 60% ASMD regimes. Higher tillers No. plant-1 values were recorded for 40%ASMD, whereas plant height, 1000-grain weight, straw and grain yields exhibited higher values under 60% ASMD. Cu under 80% ASMD, as two season averages, were10.38 and 5.42%, respectively, lower than those with 40 and 60% ASMD, and higher WP was attained, and averaged 22.46 and 23.60% over the two seasons, respectively, more than those with 40 and 60% ASMD techniques.3-Brominal w+ Topik application, comparable with the other tested weeding treatments, exhibited desired trends for the parameters under study, where fresh weight of grassy, broad-leaved and annual total weeds and Cu were reduced. Additionally, higher values of plant height, 1000-grain weight, grain and straw yields as well as WP were recorded with Brominal w +Topik application. The bilateral interaction of planting method (RBB) and irrigation regime (80% ASMD) resulted in the lowest fresh weight values of grassy and Broad-leaved weeds and total. Furthermore, significant higher values of plant height, 1000-grain weight in the two seasons and grain yield in 1 st season were recorded. The interaction between 80 % ASMD irrigation technique and Brominal w + Topik application resulted in, on two seasons mean basis, lower values of fresh weight for grassy and broad-leaved and total weeds. In addition, except tillers No. plant-1 trait, higher values of plant height, 1000-grain weight, straw and grain yields (19.86 ardab fed-1) were obtained. T...

Effect of Deficit Irrigation and Weed Control Treatments on Grain Yield and Water Productivity for Three Bread Wheat Genotypes

“…The weeds cause extra competition of crop plants with biotic factors of the environment. The large population of weeds cause drought to the crop plants as more moisture is taken which ultimately caused damage to crop plants, (Ali et al,2012 andBadawi, andKenapar 2017) so, choose the highyielding ability genotypes is very important to raise wheat productivity per unit of area and suppression weed growth. So, the main objective of the current study is to investigate the effect of deficit irrigation and weed control treatment on growth, yield, yield components, and productivity of irrigation water on some wheat genotypes.…”

Effect of Planting Methods on some Water Relations and Yield of Wheat at North Nile Delta, Egypt

“…Majeed et al (2015) pointed out that in bed planting method, increasing N up to 120 kg ha −1 excessed wheat yield up to 5.12 t ha −1 , compared with the yield at the same N fertilizer rate (4.45 t ha −1 ) in flat planting method. Badawi and Kenapar (2017) revealed that it is suitable to irrigating wheat at 80% of available soil moisture depletion when cultivation it on raised beds. This study aims to evaluate the effect of changing wheat planting pattern on sowing grain on lines or raised bed compared to sowing in basins (flat broadcasting).…”