California Crop Fertilization Guidelines

UC Davis
A collaboration between CDFA, FREP and UC Davis

California Crop Fertilization Guidelines

The fertilization guidelines on this site have been redesigned to be compliant with AB434. The guidelines in the traditional design with the latest updates can be found on the UC Davis Nutrient Management website .

These guidelines have been written by scientists from the University of California, Davis with support from CDFA-FREP. The guidelines are based on research results from studies carried out in California and elsewhere. For an optimal fertilization program, site-specific information needs to be taken into account. Discussion about site-specific adjustments can be found here.

Field crops and vegetables

Tree crops