Abstract
SUMMARY This study was made to determine the effects of the row sowing with different sowing rates such as 250, 350, 450, 550, avid 650 seeds/®2 and broadcast sowing with sowing rate of 30 kg seeds/da on yield and yield components of common wheat cuitivar Or so the field trial arrenged in randomized block design with four replications was conducted in Kadirli-Adana. During the growing season of 1384-85. The results of this study were summarized as following, 1. Sowing rates affected the number of plants p&r squermeter in creasing the sowing rate increased the number of plants per squermeter. The lowest number of plants per squermeter (225 plants/»*) was optained from the sowing rate of 250 seeds/»* and the highest one < 51 1.3 plants/»3) from the sowing rate of 650 seeds/»2. 2. increasing the sowing rate increased the number of tillers per squermeter. The highest number of tillers per squermeter U176.0 tillers/»*) was optained from the sowing rate of 650 seeds/»* and the lowest one (534.8 tillers/»2) from the sowing rate of 250 seeds/»2. 3. increasing the sowing rate increased the number of fertile tillers per squarmeter. The highest number of fertile tillers per squarmeter (746.8 tillers/»2) was optained fro» the sowing rate of 650 seeds/»2 and the lowest one from the sowing rate of 250 seeds/»*. 4. The sowing rates didn't effect the plant height. 5. Spike longtn was not influenced by the sowing rates. 6. The nu»ber of spikelets per spike was not influenced by the sowing rates. 7. The sowing rates didn't effect the number of seeds per spike. 8. The sowing rates didn't effect the seed weight per spike, S. 1000 seed weight was influenced by sowing rates, increasing the sowing rate until 450 seeds/»* increased the 1000 seed weight, but higher sowing rates decreased 1000 seed weight. 10. The sowing rates affected the hectoliter weight, increasing the sowing rate until 450 seeds/»* increased hectoliter weight, but higher sowing rates decreased hectoliter weight, 11. The highest grain yield was optained fro» the sowing rate of 450 seeds/»2 in grain yield, this sowing rates was followed by 550_?c seeds/»»*, 350 seeds/m2, broadcast sowing, 250 seeds/»2, and 650 seeds/»2 respectively. As a result of this study, it «as conculuded that the optimum sowing rate »as 450 seeds/m2 and the row sowing with the sowing rates studied with the exception of 250, and 650 seeds/m2 gave higher yield than broadcast sowing.
