Organic neutral liquid fertilizer and process for preparing the same

A process for preparing a neutral liquid fertilizer comprising the steps of:

• (a) adding an organic acid selected from the group consisting of citric acid, acetic acid, malic acid and fumaric acid, to water with stirring at room temperature;
• (b) adding 1/3 of the amount to be used of liquid phosphoric acid gradually to the above mixture with stirring;
• (c) adding 1/3 of the amount to be used of potassium hydroxide gradually to the mixture with stirring while keeping the temperature below 60.degree. C., and then allowing the temperature to rise to 90.degree. C.;
• (d) adding 1/3 of the amount of urea all at once to the mixture, which decreases the temperature to about 40.degree. C.;
• (e) repeating the above steps (b)-(d) twice;
• (f) adding a thickener and an amino acid to the mixture;
• and
• (g) adding either chelated iron and copper sulfate or ammonium iron citrate to the mixture.