In organic operations, it is recommended that all application rates be increased 100% of traditional applications applications for conventionally grown crops. (Conventional rate of 1 gallon per acre will increase to 2 gallons per acre for organic crops).
This increase is recommended because the build-up of soil nutrients in organic fields is typically significantly less than that found in conventionally fertilized fields. Additionally, organic fertilizer products tend to have a slow release of nutrients compared to that of chemical fertilizers. Number and frequency of applications may also have to be increased for the same reasons.