The determination of yield and yield components of durum wheat (Triticum durum L.) with different sowing densities in bed sowing methods

In present study the aim has been to determine yield and yield components of durum wheat grown via bed sowing method by employing a variety of sowing densities. As the cultivar, a forward line (DÜZF-Line 299) developed and presented for registration by Dicle University Faculty of Agriculture Department of Crops were used. In the study bed sowing was conducted as 2 lines on beds and 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600 and 650 grains per square meter.The test has been executed according to randomized block design with 3 replications under irrigated conditions. After cultivating test field in fall through deep cultivation method with goble disk and harrow 70 cm. spaced beds have been formed by a bed machinery. Those beds have been pushed and flattened by bed harrow. Following the parceling that fits into test plan manual cultivation has been performed. Each parcel has been formed 4 m long 3 lines (4 m x 2.1 m = 8.4 m2). 2 lines of cultivation have been made on each bed and the distance between lines has been arranged as 15 cm.In the experiment 8 kg P2O5 and 15 kg N fertilizers have been used per decare. According to precipitation conditions and necessities, irrigation has been performed during 3 critical periods (tillering-booting, earing and milk stage).In the study the number of plants per square meter, plant height, lodging rate, spike length, number of spikelet per spike, grain number per spike, grain weight per spike, weight of 1000 grains, number of stalks per square meter, spike number per square meter, grain yield, test weight, size (sieve) analysis, grain hardness, and yellow berry rate were investigated.As the three factors that directly affect the yield per unit in cereals, the number of spikes per unit area, number of grains per spike and weight of grains per spike were examined it was detected that 600 seeds/m2 (spike number: 320.3 plant/m2, number of grains per spike: 41.80 units/spike, weight of grains per spike:1.53 g/spike) bed planting method was the best one for durum wheat in bed sowing method under wet conditions and the second best method was the one with 550 (number of spikes: 345.3 plant/m2, number of grains per spike: 46.20 units/spike, weight of grains per spike: 1.71 g/spike).Key Words: Bed Sowing, Durum Wheat, Sowing Density, Yield