Study Effect on Absorption of Some Micro Elements under Irrigation by Compost Leachate on Plant Production

This study in order to evaluate the effect of using Compost leachate on the concentration of soil Zinc in form of a statistical pattern called ʹʹSplit Plot ʹʹ by using two main treatments, one subsidiary treatment and three repetitions of the pattern in a three month period. The main B treatments include: irrigation using well water as a blank treatment and the main R treatments include: irrigation using leachate and well water concurrently. Some subsidiary treatments were S (Drop Irrigation) and SS (Sub Drop Irrigation). Then in the established plots, 36 biannual pine and cypress shrubs were randomly grown. Two months later the treatment begins. The results revealed that there is a significant difference between blank treatments and rotation treatments regarding the pH in the first level of Duncan test. Also there was an increase in zinc absorbency of the soil which was in regard to the added amount of Leachate. Later on after using leachate the average pH was decreased equal to 0.46 and also the average of Zn in the soil show an increase in the range of 5.43 mg/kg. Anyway the density of soil Zn in each period was more than past periods. By using leachate and a decrease in the soil pH, there was a significant increase in the soil zinc absorbency relation to blank treatment.