Influence of Levels of Spring Irrigation and Fertility on Yield of Winter Wheat (Triticum aestivum L.) under Semi-arid Conditions
1972
Poostchi, I. | Rovhani, I. | Razmi, K.
Under semi-arid conditions of southern Iran variation in moisture level can drastically change yield patterns of winter wheat (Triticum aestivum L.) within the same season or over several seasons. In order to study this yield fluctuation, an experiment considering the effects of spring irrigation and fertility levels on components of yield, plant characteristics, and yield of grain and straw of ‘Roushan’ variety of winter wheat was conducted. Thiis 3-year study showed that yields of grain and straw were positively and significantly correlated with levels of irrigation in each crop season and in combined 3 years. The correlations for yield of grain to levels of fertilizer were negative and significant. Multiple and partial correlation coefficients showed components of yield to be more affected by season and irrigation level than other factors under study.
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