Response of Spring Safflower Cultivars to Irrigation Intervals in Birjand Condition

Document Type : Research Article

Authors

• M. A Behdani
• M Jami Al-Ahmadi

Birjand

10.22067/gsc.v8i2.7529

Abstract

Abstract
In order to evaluate the effect of irrigation intervals on yield and yield components of three spring safflower cultivars (Carthamus tinctorius L.) in Birjand, an experiment was conducted at research farm of faculty of Agriculture of Birjand University in 2007. Experiment was a split plot on the basis of randomized complete block design with four replications. Three irrigation intervals, including: 7, 14 and 21 days were randomized in main plots and three spring safflower cultivars, including: Kooce, P1 and IL111 were allocated to subplots. The highest yield was obtained from Irrigation with 7 days and cultivars of Kooce with mean seed yield of 2653.2 kg/ha. In this irrigation treatment yield of cultivars P1 with 16% reduction was not different from Kooce, but cultivar IL111 with approximately 30% lower yield showed a significant difference with P1. In all three cultivars the lowest seed yield was obtained from 21-day irrigation interval. Mean seed yield in this treatment was 1069.46 kg/ha and reduced by 53% compared to yield in 7-day irrigation intervals. The influence of irrigation intervals in this situation on cultivar IL111 was considerably more than two other cultivars. The results showed that cultivar Kooce had the best yield with 7-day irrigation intervals in Birjand condition.

Keywords: Irrigation interval, Safflower, Yield

20.1001.1.20081472.1389.8.2.14.1

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