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The effect of planting date and plant density on phonological characteristics, yield and yield components of hybrid corn Karun 701 in Khuzestan
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S. Mandehpour   , Sh. Lak * , M. Sharafizadeh |
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Abstract: (3851 Views) |
| This research was conducted in order to investigate the effect of planting date and plant density on phonological characteristics, yield and yield components of hybrid corn Karun 701 in Agriculture Research Center of Safiabad Dezful (seed certification branch) in the north of Khouzestan province in summer 2011. The research was conducted in randomized complete blocks design with split plot arrangement, with four replications. Main treatment planting date as main treatment including: 1 July, 10 July, 20 August and plant density in five levels (3, 4, 5, 6 and 7 plants per square) were considered as subplots. The results showed that the effect of planting date on investigated traits such as days number to flowering, days to physiological maturity, the percentage of green field, the number of grain per ear, one- thousand grain weight, grain yield, biological yield and harvest index was significant. The effect of plant density on traits number of days to physiological maturity, number of grain per row, the number of grain per ear, grain yield and harvest index was significant. The interaction of planting date and plant density on any of the traits was not significant. The highest grain yield belonged to planting date on 1 July and among the densities, planting density of 6 plants per square also produced the highest grain yield. Among the evaluated traits number of grain per row and one- thousand grain weight with 0.679 and 0.656, respectively, had the most significant and positive correlation and the trait number of row per ear with - 0.098 had the highest negative correlation with grain yield. |
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| Keywords: Planting date, Planting density, Yield, Corn hybrid. |
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Full-Text [PDF 238 kb]
(4022 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2015/06/27 | Accepted: 2015/06/27 | Published: 2015/06/27
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