Fruit & Nut Research and Information Center
Fruit & Nut Research and Information Center
Fruit & Nut Research and Information Center
University of California
Fruit & Nut Research and Information Center

Nitrogen Prediction Models for Almond and Pistachio

These models are based on research conducted through Advanced Sensing and Management Technologies to Optimize resource Use in Deciduous Tree Crops, a 4-year, multi-state project. For project details, including investigative team, methodology and support, see project link.

N & K Prediction Model for Pistachio

1) Guidelines for Pistachio Early-Season Sampling and In-Season Nitrogen Application Maximizes Productivity, Minimizes Loss (pdf). By Muhammad Ismail Siddiqui & Patrick Brown

2) Estimate pistachio tree demand: Pistachio Model for Calculating Nitrogen Demand

3) Interpret early season pistachio leaf samples: Pistachio Prediction Model (PPM). The Pistachio Prediction Model (PPM) is an update released July 2014 in Excel format. PPM is also incorporated in the N & K Prediction Model for Pistachio linked in item 2) above.

Nitrogen Management Tools for Almond

1) Guidelines for Early Season Sampling and In-Season Nitrogen Budgeting (pdf)

2) An integrated model that calculates your N budget utilizing predicted yield, irrigation water, amendment and leaf nutrient samples can be found at:

Note: This is a joint UC Davis, Almond Board and SureHarvest web site. You will be requested to enter an email address which will only be used to send you a password for access. The site will not retain your data unless you specifically request it to do so.

3) Interpret early season almond leaf samples: Download these spreadsheets: N-Prediction Model for Almond (22K) and N-Prediction Model for Almond: large datasets (317K) from this page: Crop Nutrient Status & Demand in Almond. The website also contains the tools to conduct the N prediction procedure.

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