THE IMPACT OF GROWTH AND YIELD CHARACTERS OF WHEAT BY TILLAGE TYPES AND CORN RESIDUALS LEVELS

Abstract

Two experements (Tillage and no–Tillage) were carried out during 2013-2014 season land sown with corn in previous season. The aim of the experement was to study the effect of no tillage and levels of corn residuals (0, 3, 6 and 9 ton ha-1) on some growth traits and yield of wheat. Each experement was planted by using RCBD with three replicates, and combined analysis was conducted. The results showed that the tretment 6 ton ha-1 significantly surpassed in leaf area and leaves dry weight which estimates after 60 and 90 days from emergence (92.72 and 271.53 cm2) and (0.243 and 1.129 gm) respectively. The same treatment significantly exceed other treatments in growth traits, i.e. plant hight (87.86 cm), No. of tillers and spikes m-2 (330.5 and 318.0 respectively), No. of grains spike-1 (44.03), and grain and biological yield (4.771 and 16.48 ton ha-1) The values of all above characters were signgficantly reduced in the level 9 ton ha-1 of corn residuals. No-tillage experement gave the highest values in all characters in combared with tillage experement. There was no interaction between tillage type and residuals levels except in No. of grain spikes-1, grain yield and harvest index. The treatment 6 ton ha-1 in no tillage experement gave the highest values in these three characters.