Response of Corn (Zea mays L.) To Planting Pattern and Density in Iran

Abstract: The effect of planting pattern (single-row, simple twin-rows and zigzag twin-rows planting) and planting density (7, 10 and 13 plant m) were evaluated on yield and agronomic traits of modern long maturity2 seed corn variety KSC700 in the west of Iran in 2006. Results showed that planting pattern had significant effect on grains per row, grain yield, light interception and leaf area index. Grains per row, grains per ear, grain yield, light interception, leaf area index and harvest index were significantly influenced by planting density. There were significant differences in grains per row, grains per ear, grain yield and light interception due to different planting pattern × density intractions. Higher LAI caused more light interception in twin-rows patterns than single –row pattern, with increasing in corn density. The highest grain yield was obtained for twin-rows planting from 10 plant m as a function of more grains per row. Single-row pattern in 13 plant m produced2 2 the lowest grain yield. Key words: Zea mays Planting pattern Planting density Yield Light interception INTRODUCTION plant density increased, but ear lengh, ear diameter and Corn (Zea mays L.) is the most important grain forage of cron plant population from 53333 to 88888 plants ha crop in Iran. The average grain yield of corn is more than significantly increased the fresh ear yield [18]. Akbar et al. 8 ton ha and is increasing annually. In order to optimize [1] reported that the most proper sowing density in corn