Effects Of Sowing Date On Grain Yield Of Corn Cultivars In Spring Early Sown In JIROFT
2005
Afshar Manesh, Gholam Reza | Mashayekhi, Hoseyn
The evaluation consist of two experiments which separately study the effects of sowing date on grain yield and products of corn cultivars in Jirof in the early spring sown. The first is on early mature corn cultivars of grain products. On the base of randomized, by using of a split plot design, there are three complete block replicated. In Jiroft region (Jiroft agriculture research center) in 2002-2003 this expriement has been done. The main plots are three early mature hybrids corn (320- 310- 500) and five subplot sowing dates are (10/11, 20/11, 30/11, 10/12, 20/12) In The second expriement similar to the first one, instead of using early mature corn, delay mature corn has been used. It's cultivars were (S.C 704, T.W.C 647, 700 Karaj) The results of 2 years expriements: The first one in the best condition from cultivar of 320 hybrid with sowing date (11/10) produces 8.8 tones in a hectar and in the second, the highest yield from Karaj 700 with sowing date of (11/10) is 12.8 tones in a hectar, meanwhile products of cultivars are not significant for Jiroft region, delay mature cultivars with sowing date (11/10, 12/10) is recommended.
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