NOVELTY - Liquid fertilizer comprises 50-60 pts. wt. lees, 4-8 pts. wt. mandelic acid, 60-70 pts. wt. sweet potato powder, 16-18 pts. wt. ammonium dihydrogen phosphate, 27-33 pts. wt. maggot powder, 8-12 pts. wt. potassium epsom salt, 110-120 pts. wt. waste poultry feathers, 6-8 pts. wt. copper sulfate, 7-9 pts. wt. ferrous sulfate, 3-5 pts. wt. genetically modified microbial preparations and balanced amount of water.    USE - Liquid fertilizer used for improving crop photosynthesis (claimed).    ADVANTAGE - The liquid fertilizer promotes enzyme activity and increases phosphorylation reaction, protein content and yield.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing liquid fertilizer, which involves:    (A) washing, drying and crushing livestock and poultry feather waste;    (B) hydrolyzing one half of crushed feather with sulfuric acid solution using microwave oven for 180-220 minutes;    (C) hydrolyzing one half of crushed feather with potassium hydroxide solution using microwave oven for 280-320 minutes;    (D) stirring hydrolysed materials uniformly;    (E) filtering stirred material to obtain hydrolysis liquid and organic residue;    (F) mixing mandelic acid and copper sulfate;    (G) regulating pH of obtained mixture to 6.0;    (H) heating obtained mixture at 50-60 degrees C for 70-90 minutes;    (I) reacting ferrous sulfate with obtained mixture at 70-80 degrees C for 40-60 minutes to obtain composite amino acid chelated liquid;    (J) mixing organic residue, maggot powder, lees and sweet potato with water;    (K) controlling water content of obtained mixture to 45-50%;    (L) fermenting obtained with for 30-40 days with genetically modified microbial preparation;    (M) filtering fermented material with yarn cloth filter to obtain liquid; and    (N) mixing liquid with composite amino acid chelated liquid, ammonium dihydrogen phosphate, potassium epsom salt salt and remaining material uniformly using magnetic stirrer for 5-10 minutes to obtain liquid fertilizer.