Evaluation of applied micronutrient against to some biotic tension

usage of fertilizers for increasing of quantity and quality of crops is necessary. Adequate consumption of micronutrients not only increases the yield but also may reduce the biotic stresses effects. Moreover early maturity of wheat crops besides the fair economical effects i.e. water consumption reduction causes less disease effects. Due to high annual damages of soil born diseases like take all and common root rot on wheat farms, present study carried out with nine treatments: 1- control( only nitrogen and phosphorous based on conventional consumption of farmers) 2- nitrogen, phosphorous and potassium application based on soil test 3- second treatment + magnesium sulfate 4- third treat. + copper sulfate 5- forth treat + manganese sulfate 6- fifth treat + zinc sulfate 7- sixth treat + iron sulfate 8- seventh treat + potassium silicate 9- eight treat. + Wheat seed inoculation by aztobacter. This survey has been done in randomized complete block design with three replications. During the growth season sampling for infected plants carried out. The results showed that in general present treatment couldn't control the common root rot pathogen as well as their symptoms reduction. The maximum yield obtained in the forth year with 5548 kg/ha while the minimum yield was in the third year with 4654 kg/ha. Duncan multiple range tests showed that the treatment grouped in 6 class's treatment No. 5, 6, 7 and 9 where in the highest class treatment No. 7 was the best with 5403 kg/ha i.e. 1150 kg/ha more than control. For Evaluation of the severity of take all, plants out of soil in the ear emergences stage and were sign and grade from 0 to 5 based on wounds on roots. The results of this study indicated that micronutrient fertilizers including zinc sulfate and manganese sulfate increased yield and reduced the disease of take all. This control was desirable manner especially when they associated with inoculants of Azetobacter before planting wheat seeds.