Effects of super absorbent application on yield and phonological traits of safflower cultivars in delay and spring sowing time at rain fed conditions in Sanandaj, Iran
Subject Areas : New Finding in Agriculture
samira Mohammadi
1
(دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد اراک)
hamid Madani
2
(دانشیار گروه زراعت، دانشکده کشاورزی، دانشگاه آزاد اسلامی، واحد اراک)
asad Rokhzadi
3
(استادیار گروه زراعت، دانشکده کشاورزی، دانشگاه آزاد اسلامی، واحد سنندج)
Keywords: Safflower, Super absorbent, delay sowing, spring sowing,
Abstract :
In order to study the effectsof sowing date and super absorbent polymer application on yield and agronomictraits of safflower cultivars under rain fed conditions, an experiment wasconducted using a split-split plot layout in a randomized complete block designwith three replications in Sanandaj region. Two planting dates of delay (a1)and spring (a2) sowing were compared in main plots. Two treatmentsof non-application (b1) and application (b2) of superabsorbent polymer were assigned in subplots and three cultivars of Sina (c1),Faraman (c2) and Goldasht (c3) were applied as sub-subplots.Results showed that the phenology of safflower was significantly affected bysowing date. The longest developmental stages were recorded in delay sowingdate. Super absorbent application had no significant effect on crop phenology.Effect of sowing date on capitula number per plant, seed yield, biologicalyield and protein yield was significant. delay sowing date was superior tospring sowing date with regard to seed yield and crop productivity. Superabsorbent application significantly increased the number of capitula per plant,moreover in spring sowing date, application of super absorbent significantlyincreased biological yield as compared with non-application treatment. Thegreatest amount of seed yield among the studied genotypes was recorded by Faramancultivar at the rate of 601.2 kg/ha. According to the results of thisexperiment, delay sowing of safflower in rain fed conditions is morerecommended in comparison with spring sowing, and super absorbent applicationespecially in spring sowing date can resulted in improvement of crop growth andyield. In addition to, Faraman cultivar was superior to other two cultivarswith regard to productivity and yield under regional conditions of thisexperiment
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