بررسي اثر فاصله رديف كاشت و تراكم بوته بر عملكرد سيلويي و صفات مورفولوژيكي ذرت رقم 704

Assessment of Row Spacing and Plant Density Effects on Silage Yield and Morphological Characters of Corn (SC 704)

In order to assess the effects of row space and plant density on silage yield and morphological characters of corn, an experiment was carried out in Karaj for two years (1999-2000), using a randomized complete block design in split plot arrangement with three replications. Three row spaces (50, 60 and 75 cm) were considered as main plots, and five plant densities (70, 80, 90, 1 00 and 130 thousand plants per hectare) as sub plots. The results showed that the effect of year was significant at 1% level. Silage yield, ear yield and morphological characters of corn were affected by row spacing and plant density. Effect of row spacing on silage yield, plant height, stem diameter and ear diameter were significant. The highest silage yield and ear yield of 72.52 and 23.56 tha^-1 were obtained from 50 cm row space respectively. Effect of plant density on silage yield, ear yield and all morphological characters was significant. The highest silage yield and ear yield of 69.90 and 23.59 tha^-1, were obtained from 130 thousand plants/ hectare, respectively, but comparing means of intractions for higher silage yield and ear yield, plant density of 80 thousand plants per hectare and 50 cm row space could be recommended for the region.