Effect of different methods of weed control on yield and its components of some wheat (Triticum spp.)‎ varieties

الملخص EN

The research was carried out in the fields of the Faculty of Agriculture, Damascus University during the growing season of 2012 /2013, to study the effect of different methods of weed control (T1: without weeding during the whole growth period, T2: hand weeding during the whole growth period, T3: two weedings by cultivator and hand, T4: two weedings using Superfuse and U-46 herbicides) on yield and its components of some wheat varieties (Douma1, Cham3, Cham10 and Cham4).

The experiment was laid in split plot design with three replications.

The statistical analysis results clearly indicated the genetic variation in the response of the studied wheat varieties to weed control methods.

Hand weeding during the whole crop growth period (T2) significantly recorded the highest mean values of the parameters: plant height (113.42 cm), leaf area index (4.97), crop growth rate (286.83 mg.day-1), number of spikes per plant (10.50), number of grains per plant (277.79), 1000-kernel weight (34.80 g), grain yield (5689.52 kg.ha-1) and harvest index (47.78), followed by the weed control treatment using herbicides (T4).

With respect to the response of wheat varieties to weed control methods, the variety Cham10 recorded significantly the highest mean values of the parameters: plant height (89.13 cm), leaf area index (3.64), crop growth rate (225.25 mg.day-1), number of spikes per plant (9.33), number of grains per plant (200.81), grain yield (4792.85 kg.ha-1) and harvest index (47.32), followed by the variety Cham4