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EFFECT OF THE PLANT DENSITY AND SOWING DATE ON KERNEL YIELD IN EARLY MATURING MAIZE

2014; Volume: 2014; Issue: 4 Linguagem: Inglês

2231-4490

Mohammad Hossein Haddadi, Masoud Mohseni,

Rice Cultivation and Yield Improvement

In order to determine the best planting dates and plant densities of corn for kernel yield, two early and very early maturity corn cultivars (SC 108 and SC301) were planted separately on three planting dates ( 22 Jun ,1 Jul and11Jul ) for two years ( 2009 – 2010) . Plant densities were 75000, 85000, 95000 and 105000 plants per hectar. A split plot design with three replications was used. Sowing dates and plant densities were alocated to main plots and sub plots, respectively. Two experiments were done in two locations, Qaemshahr and Neka, and with two cultivars (SC 301 and SC108). Kernel yield for each plot and each treatment were evaluated. The best planting date and plant density were determined for two years. In Bayekola location, for SC301 cultivar, the best density was 75000 plants per hectare with kernel average yield of 8.1 t/ha. For SC 108 cultivar, highest kernel yield was 7.3 t/ha with 85000 plants per hectare. In Qarakhyle, for SC301 cultivar, the best density was 75000 plants per hectar with kernel average yield of 7.7 t/ha. In this location, for SC108 the highest kernel yield was 7.2 t/ha and the best density was 85000 plants per hectar. In general, planting date and plant density affected on 1000 kernel weight Result showed that SC301 had higher yield than SC108 after wheat harvest.