Investigation the Effects of Date Palm Leaves and It’s Biochar on Yield and Water Use Efficiency of Forage Corn

Biochar plays an important role in the optimal use of water in agriculture and improving plant yield and water use efficiency. Therefore, the aim of this study was to investigate the effects of palm leaf and it’s biochar on yield, yield components and water use efficiency of forage corn in a sandy clay loam soil under the same conditions. Experiment with a completely randomized design with two types of modifiers of palm leaf and it’s biochar at six levels (control, 0.5, 1, 2, 3 and 4.5% by weight of date leaf treatments C0, D1, D2, D3, D4, D5, respectively and treatments C0, B1, B2, B3, B4, B5) were performed in three replications as a greenhouse experiment. Characteristics of height, stem diameter, wet and dry weight of shoots, root weight and volume were measured. Water use efficiency base on dry matter yield were calculated. The results showed that the effects of date palm leaves and biochar on the yield and its components, water use efficiency based on the dry matter yield of shoots and roots are significant at the level of 1%. The most effect of biochar and date palm leaf dry matter on shoot dry matter yield has observed in B5, wet plant yield in D2, root dry matter in D1, root volume and stem diameter in B5 and maximum plant height in B1 and B2. Also, the highest water use efficiency of plant is related to B5, which has increased the water use efficiency by 3.6% as compared to the control. It was while D1 improved root water use efficiency. The results showed that use of 4.5% by weight of biochar improved the yield and water use efficiency of the shoot and biochar can be used by increasing the amount of yield and water use efficiency in forage corn by considering its optimal amount.