Evaluation and Comparison of Modified Hydrochar and Superabsorbent onSome of Physical and Chemical Properties soil

Resently, with regard to the excessive use of chemical fertilizers in agricultural land and the degradation of soil and the environment, the use of these fertilizers highlights the importance of using organic fertilizers and polymer materials such as hydrochloric and superabsorbent. The purpose of this study was to investigate the effect of different levels of modified hydrochar, cane sugar and superabsorbent type A200 as environmentally Compatible materials on some soil characteristics using a factorial design and a completely randomized block design with four replications for four Month was conducted at Shahid Chamran University, Ahvaz, Iran. The levels of hydrchar and superabsorbent use included three levels of 0, 2 and 5 grams per kg of soil (0, 0.2 and 0.5 wt%). The results showed that two and five gram hydrochar per kg of soil increased 5.9% and 9.4%, respectively, total porosity, 9 and 17.9% moisture field capacity, 0.43% and 1.2% moisture content of wilting point , 9.8% and 18% organic carbon, 4% and 15% of absorbable phosphorus, 6% and 18% nitrogen, 5.5% and 16% of electrical conductivity, and 7.7% and 7.7% reduction of bulk density, 0% and 0.77% of the specific gravity, 0.39% and 1% of soil acidity compared to the control. The Level of two and five grams of super absorbent per kilogram of soil also increased 10 and 18.6 percent moisture content of filed capacity, 8 and 11 percent moisture content of wilting point, 0.52 and 0.92 percent, acidity, 4.26 and 13 The percentage of electrical conductivity was 2.7 and 9.9%, respectively, and total porosity decreased by 2 and 5.7%, respectively, and had no significant effect on the amount of organic carbon, absorbed phosphorus, nitrogen and specific mass of soil. In general, the results indicate that hydrochar treatment is superior to superabsorbent treatment on Improvement soil physical and chemical properties of soil with loam texture.