*Title: Nitrogen Course

Source: UC ANR CA Institute for Water Resources

Last updated: 2024

Description: This module-course about nitrogen management is offered annually and features a range of experts on nitrogen management in agricultural systems. The course provides an comprehensive overview of the fundamentals of nitrogen cycles in agriculture and plant nitrogen uptake mechanisms. The course concludes with modules on the applications of this information for topics such as irrigation considerations, nitrogen budgeting, and environmental impacts of nitrogen loss.

Title: California Fertilization Guidelines

Source: UC Davis and CDFA

Last updated:

Description: This online resource covers diverse topics related to nitrogen management and contains a useful interactive application that goes in-depth on nitrogen considerations for many specialty crops grown in California. Some of these specialty crops are also available in Spanish. In addition, there are overviews of nitrogen management concepts such as “The 4 Rs” and discussion of nitrogen loss pathways in agriculture.

*Title: Using a Soil Nitrate Quick Test (SNQT) for Guiding Nitrogen Fertilization

Source: UC ANR Irrigation and Nutrient Management

Last updated:

Description: This resource provides the step-by-step process for conducting a soil nitrate quick test to estimate the plant available nitrogen as nitrate.

*Title: Nitrogen budgeting and worksheet

Source: UCCE Small Farms Capitol Corridor

Last updated:

Description: These two complementary resources provide an overview of how to complete a nitrogen budget for specialty crops that can help to estimate nitrogen supply throughout the season using a range of inputs. The second resource is a nitrogen budget worksheet that can be filled in with all the relevant information to calculate nitrogen supply for a given crop production.