NOVELTY - Special fertilizer for tuber plants comprises 25 wt.% peanut straw, 30 wt.% garlic straw, 25 wt.% animal waste, 11 wt.% soybean meal, and 9 wt.% traditional Chinese medicine comprising Quisqualis, neem, bitterbark, betelnut, pumpkin, Agrimony, Omphalia, Carpesium abrolanoides, Chinese Torreya, fructus ulmi, Pyrethrum, Iris tectorum, garlic, cacumen biotae and sunflower.    USE - The special fertilizer for tuber plants is useful for controlling insects.    ADVANTAGE - The special fertilizer reduces disease of crops, and exhibits synergistic effect.    DETAILED DESCRIPTION - Special fertilizer for tuber plants comprises 25 wt.% peanut straw, 30 wt.% garlic straw, 25 wt.% animal waste, 11 wt.% soybean meal, and 9 wt.% traditional Chinese medicine comprising 4 pts. wt. Quisqualis, 5 pts. wt. neem, 8 pts. wt. bitterbark, 2 pts. wt. betelnut, 2 pts. wt. pumpkin, 2 pts. wt. Agrimony, 2 pts. wt. Omphalia, 2 pts. wt. Carpesium abrolanoides, 2 pts. wt. Chinese Torreya, 2 pts. wt. fructus ulmi, 4 pts. wt. Pyrethrum, 3 pts. wt. Iris tectorum, 3 pts. wt. garlic, 4 pts. wt. cacumen biotae, and 5 pts. wt. sunflower. An INDEPENDENT CLAIM is included for method for preparing the above-mentioned special fertilizer, which involves (a) weighing and taking the above-mentioned raw materials, (b) weighing the above-mentioned traditional Chinese medicine, adding the medicine in container, adding 8 times water to the container, soaking the mixture in water for 12-24 hours and filtering the mixture to obtain filtrate and residue, (c) crushing peanut straw and garlic straw, adding the above-mentioned components to fermentation tank, adding animal waste, soybean meal, other materials and traditional Chinese medicinal residue obtained in step (b) and uniformly stirring the mixture, (d) uniformly spraying the filtrate obtained in step (b) on the upper surface of the mixture obtained in step (c) and fermenting the mixture for 7-21 days, where the fermentation is stacked for every 3-9 days, and (e) drying the fermented material until the fermented materials have moisture content of 15 wt.% and crushing and packaging the dried material.