NOVELTY - Fertilizer comprises sweet potato powder (35-40 pts. wt.), kelp residue (18-20 pts. wt.), modified starch solution (16-18 pts. wt.), coffee beans (10-15 pts. wt.), complex microbial inoculants (4-6 pts. wt.), peanut meal (22-25 pts. wt.), bone meal (28-32 pts. wt.), and balanced amount of water. Complex microbial inoculant comprises fungus, Bacillus subtilis and photosynthetic bacteria in a ratio of 2:2:1. Modified starch solution comprises potato starch (45-55 pts. wt.), calcium acetate (2-4 pts. wt.), potassium permanganate solution (2-3 pts. wt.), and acrylic acid (15-20 pts. wt.).    USE - Fertilizer for corn (claimed).    ADVANTAGE - The fertilizer ensures improved absorption of nutrients.    DETAILED DESCRIPTION - Fertilizer comprises sweet potato powder (35-40 pts. wt.), kelp residue (18-20 pts. wt.), modified starch solution (16-18 pts. wt.), coffee beans (10-15 pts. wt.), complex microbial inoculants (4-6 pts. wt.), peanut meal (22-25 pts. wt.), bone meal (28-32 pts. wt.), and balanced amount of water. Complex microbial inoculant comprises fungus, Bacillus subtilis and photosynthetic bacteria in a ratio of 2:2:1. Modified starch solution comprises potato starch (45-55 pts. wt.), calcium acetate (2-4 pts. wt.), potassium permanganate solution (2-3 pts. wt.), acrylic (15-20 pts. wt.), sodium hydroxide (3-4 pts. wt.), N,N-methylene-bis-acrylamide (0.1-0.3 pts. wt.), ferrous sulfate (8-10 pts. wt.), zinc sulfate (6-8 pts. wt.), and manganese sulfate (7-9 pts. wt.). Modified starch solution is prepared by soaking potato in water, and heating soaked products at 70-90 degrees C for 30-60 minutes to obtain a paste. Potassium permanganate is added to obtained paste with stirring for 50-70 minutes to obtain a mixture, and adding acrylic acid and sodium hydroxide to obtained mixture at 50-60 degrees C to obtain a solution. N,N-methylene-bisacrylamide is added as cross-linking reagent to obtained solution with stirring for 20-30 minutes to obtain a cross-linked product. Calcium acetate is added to cross-linked product at 50-60 degrees C for 15 minutes to obtain chelated product. Zinc sulfate and manganese sulfate are added to chelated product at 60-80 degrees C for 20-30 minutes to obtain modified starch solution. An INDEPENDENT CLAIM is included for a method for preparing fertilizer, which involves:    (A) mixing peanut meal, bone meal, sweet potato powder, and kelp residue with water in fermentation tank for 3-4 weeks to obtain fermented product;    (B) drying coffee beans at 50-60 degrees C, and grinding it to obtain a powder;    (C) adding water to obtained powder at 80-90 degrees C with stirring for 15-25 minutes;    (D) cooling heated product and adding complex microbial inoculants to it to obtain a mixture;    (E) filtering obtained mixture to obtain filtrate, and heating at 50-60 degrees C to obtain broth;    (F) mixing obtained broth and modified starch solution to obtain another mixture;    (G) drying the obtained mixture at 100-120 degrees C for 20-30 minutes;    (H) grinding dried product to obtain a particle size 200 mesh; and    (I) mixing all the obtained products to obtain final product.