Oms Investments, Inc.

Hendrikus Gijsbertus Adrianus Van Kaathoven

Edze Jan Tijsma

Johannes Gijsbertus Antonius Terlingen

Michael Gustaaf Eltink

Philip Van Roij

The present invention relates to a solid water soluble fertilizer composition containing one or more fertilizer materials and a phosphate free, organic acid which is solid at ambient temperatures. The fertilizer materials include primary macro nutrients, secondary macro nutrients, micro nutrients and mixtures thereof. The organic acid has a water solubility of at least 10 g/l (at 25&deg; C.) and an acidifying effect in the range of 0.5 to 1.3 g HCO,/g acid. The acidifying effect is defined as the amount of HCO,that can be transformed into H,CO,per gram of acid and is calculated in accordance with the following formula:

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Nieuwstadt, Netherlands

Hendrikus Gijsbertus Adrianus Van Kaathoven