Agronomic performance and grain yield of corn hybrids as affected by date of planting
1994
Siadat, S.A. | Shaygan, A.
Corn plants show different responses to temperature during different stages of growth. One of the limiting factors in growing corn Khuzistan Province is the coincidence of its anthesis with high temperatures during summer and also rainfall problem in the fall which interferes with harvesting, agronomic performance and grain yield of 3 corn hybrids. The experiment was Mollasani which is located 30 kilometers north of Ahwaz. The design of the corn hybrids; 370, 46A and 704. The sub plots were allocated to 3 dates of planting. Statistical analysis showed that hybrid 704 significantly out yielded 46A and 370 hybrids in all dates of plantings. The optimum time for planting of all hybrids used in this expriment was Mordad 14. Using regression techniques, it was concluded that the optimum date of planting for hybrid 704 is the second and third week of Mordad and for hybrids 370 and 46A is the last 2 weeks of Mordad. It was concluded that hybrid 704 has more compatibility with the environmental conditions of this region during summer and could be recommended for this area
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