Effect of different planting densities on quality and quantity yield of corn forage Hybrides in Ahvaz conditions
مانی مجدم
1
(عضو هیات علمی دانشگاه آزاد اسلامی واحد اهواز)
شقایق رمضانی
2
(کارشناس ارشد زراعت)
نازلی دروگر
3
(عضو با شگاه پژوهشگران جوان)
Keywords: Plant density, Hybrids, Corn (Zea mays L.),
Abstract :
Hybrid selection of suitable climatic conditions of each area and determine appropriate plant density are important factors in achieving high performance. An experiment was conducted in 2009 using Factorial arrangement based on Rondomised Compelete Block Design with three replications at Agricultural Research Station of Khuzestan Ahvaz, in order to study of corn densities effect on quantity and qualiy characteristics of forage corn. The experimental factors included three corn densities with row spacing (13,14,16cm) as factor A and three commercial corn hybrid (SC 704, SC 640, SC 500) as factor B. At the time harvest traits (plant height, stem diameter and number of leaves, dry matter yield, leaf dry weight, dry weight, dry weight tassel and ear dry weight per square meter, crude protein, leaf to stem ratio and the ratio of corn to plant ) were measured. The results showed that the effects of density on leaf dry weight, dry weight and leaf to stem ratio was significant. Also different varieties of plant height, leaf number, leaf dry weight, dry weight, dry weight, and the ratio of leaf to stem ratio was significant to plant corn. Interaction between variety and density of plant height and leaf to stem ratio was significant. In this experiment, it seems on rows 14 cm (95 thousand plants per hectare) due to high dry weight and leaf to stem ratio further, row spacing Ahvaz climatic conditions suitable for growing corn. 640 as well as the quantity and prematurity was better than other varieties.
