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Investigation the effect of different irrigation intervals on yield and agronomic characteristics of genotypes of forage sorghum (Sorghum bicolor L.)
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Abstract: (2691 Views) |
In order to investigate the effect of irrigation interval on genotypes of forage sorghum three separate split plots experiments in time was conducted based on randomized complete blocks design with three replications in the city of Shoushtar in 2014. The factors of experiment included eight genotypes of forage sorghum and were Chin at two different times. Results showed that with increasing irrigation from 7 to 21 days was a 12 percent decrease in plant height, 21 percent in number of leaves per plant, 36 percent in wet forage yield and 60 percent in one time irrigation, dry forage yield was observed. By increasing irrigation interval from 7 to 21 days irrigation growth characteristics of sorghum forage decreased relatively more severe than the tension of 14 days irrigation. In experiment of every seven days one time irrigation, genotypes KFS6 (37.5 ton per hectare), KFS13 (40.2 ton per hectare) and KFS16 (35.2 ton per hectare), in experiment of 14 days one time irrigation, genotypes KFS2 (26 ton per hectare), KFS13 (24.2 ton per hectare), KFS16 (26.2 ton per hectare) and KFS1 (25.8 ton per hectare) produced the highest dry forage yield. In experiment of 21 days one time irrigation, except for KSF6 and KFS2 genotypes, other genotypes had the highest yield. Totally, according to SSI, STI indices and dry forage yield were higher than the mean of all genotypes in tension conditions, genotypes of KFS18, KFS16 and KFS2 were known as superior genotypes in irrigation periods of 14 and 21 days one time of Shushtar was identified and recommended for further researches.
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| Keywords: STI and SSI indices and Forage yield. |
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Full-Text [PDF 670 kb]
(2260 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2017/08/3 | Accepted: 2017/08/3 | Published: 2017/08/3
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