Pistachio Nitrogen Model
Field Name:


*****  Yield History And Crop Load  *****

  Please type in your pistachio yields for the past 3 years below  


Last year's yield
lb/acre Year 

2 years ago yield 
lb/acre Crop load :

3 years ago yield 

   Override "Estimate Yield" (if you want to use other yield to estimate the fertilizer requirement, please enter new yield in box about and check mark override)

*** Fertilizer Application ***

Fertilizer application method:

***** Available N from Field *****

Soil type of Orchard:

Acre feet of well water applied per year:
** % over recommended water usage. leaching risk.    Get water recommendations
Water Nitrate -N (NO3-N)concentration*

ppm (mg/liter)
                 *if you don't know your water NO3-N level enter 0
Last July leaf total N level **    % of dry weight
                ** if you don't know leaf N level enter 2.3

***** Organic N *****
Manure:   Last year

 Two year prior



Amount (tons/acre)

 % N in compost

Legume cover crop:

***** Potassium Application *****
Potassium fertilizer type:
Last July leaf total K level**% of dry weight
**if you don't know leaf K level enter 2.5 (if current year is an On year) or 1.5 (Off year)

   Please allow blocked content.  
This program provides recommendations only and is not intended to be used as the sole source of information for making N and K fertilization decisions. Local environmental conditions can have a profound effect on fertilizer demands. The California Pistachio Commission, California State University, and the University of California are not responsible for the accuracy of this model.