Effect of soil moisture and tillage depth on some growth characteristics for wheat crop

the effect of soil moisture and tillage depth was studied on some growth characteristics on wheat .Two types tillage machines( moldboard plow and disk plow ) on wheat at three soil moisture levels of 12%, 14% and 16% and three levels tillage depth of 13,15 and 17 cm .The experiments were carried out in a factorial experiment under randomized complete block design were tested with three replications. The results showed that the moldboard plow was significantly better than the disk plow in all studied conditions. The results showed percentage of germination of 84% and 81%, plant height of 76.4 and 74.5 cm ,the plant branches number of 7 and 6 branch, number of spike in one square meter of 178 and 174 spike/m2 , number of grains in the spike of 76 and 71 grain/ spike and production of wheat crop of 1.25 and 1.17 ton/ Dunum for moldboard plow and disk plow, respectively. The tillage depth of 13 cm was significantly superior to the other two levels of 15 and 17cm , soil moisture of 12% was significantly superior to the other two levels of 14% and 16% in all studied conditions.