The Effect of Drought on the Growth and Yield of Winter Wheat

Authors : Ali ÖZTÜRK

Pages : 531-540

View : 17 | Download : 6

Publication Date : 1999-10-01

Article Type : Research Paper

Abstract :The effect of drought on the growth and yield of `Dogu-88` winter wheat variety was investigated in this field experi-ment using plot covers. Fully irrigated insert ignore into journalissuearticles values(FI);, rainfed insert ignore into journalissuearticles values(R);, early drought insert ignore into journalissuearticles values(ED);, late drought insert ignore into journalissuearticles values(LD); and continuous drought insert ignore into journalissuearticles values(CD); treat-ments were studied under Erzurum conditions. ED decreased grain number per unit area by 44.4 %, 1000 kernel weight by 6.9 % and grain yield by 40.6 % compared with FI. A rapid senescence of green tissues in LD treatment also led to shorter green area duration insert ignore into journalissuearticles values(27.5 days);, lighter 1000 kernel weight insert ignore into journalissuearticles values(3.8 g); and lower grain yield insert ignore into journalissuearticles values(24.0 %);. CD treatment decreased grain number per unit area by 54.9 %, 1000 kernel weight by 19.9 % and grain yield by 65.6 % compared with FI. Variations in grain yield depended mainly on the effects of treatments on grain number per unit area. ED limited primarily grain number per unit area while LD affected kernel weight. The negative effect of ED on grain yield was more significant than that of LD.
Keywords : Turk J Agric For, 23, 1999, 531 540 Turk J Agric For, vol 23, iss 5