Document Type : Research Paper
Authors
Abstract
In order to investigate the effect of irrigation and straw mulch on yield and
yield components of bean, a split-plots experiment with randomized
complete block design in three replications was conducted in Astaneh
Ashrafiyeh city during 2012. In this study, irrigation management
treatments including no irrigation, irrigation frequencies of 6, 12, and18
days, and different amounts of straw mulch as 0, 1, 2, and 3 cm thickness
were examined. The results of the analysis of variance revealed that
irrigation management and different levels of mulch had significant effects
on seed yield. But, their interaction was not significant on seed yield. The
trend of variations indicated that the highest seed yield with 2431.3 kg ha-1
was associated with irrigation frequency of 6 days. [n response to the main
effects of mulch levels, the highest average seed yield (1585.6 and 1518.4
kg ha-1) was obtained in the 2 and 1 cm treatments, respectively. Also,
using straw mulch in irrigation conditions prevented severe seed loss in
comparison with no mulch condition. The highest water use efficiency
was in irrigation frequency of 18 days with an average of 0.58 kg m-3.
Water use efficiency at straw mulch levels of 1 and 2 cm was observed as
0.63 and 0.6 kg m-3, respectively.
Keywords
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