Salinity Mapping for Precision Variable Rate Fertilizer Application

The incidence of salinity affected areas in irrigated fields results in restricted crop growth in the saline areas. If fertilizer applications are a constant rate blanket application over the field, the saline affected areas receive a greater rate of nutrients than the crop can use. This can lead to a build up of excess nutrients, especially N and P.

IPNI-2014-CAN-AB33

Project Description: The incidence of salinity affected areas in irrigated fields results in restricted crop growth in the saline areas. If fertilizer applications are a constant rate blanket application over the field, the saline affected areas receive a greater rate of nutrients than the crop can use. This can lead to a build up of excess nutrients, especially N and P. Read more


Year of initiation:2014
Year of completion:2015
Map:

Interpretive Summary

2015

The incidence of salinity affected areas in irrigated fields results in restricted crop growth in the saline areas. If fertilizer applications are a constant rate blanket application over the field, the saline affected areas receive a greater rate of nutrients than the crop can use, because crop growth in the salt-affected areas is less and yields lower. This results in an excess application of nutrients compared to what the crop will use.

2014

The incidence of saline-affected areas in irrigated fields restricts crop growth. If fertilizer applications are a constant rate blanket application over the field, the saline affected areas receive a greater rate of nutrients than the crop can use. This can lead to a build up of excess nutrients, especially N and P. The potential outcome of the project is to use salinity level designated management zones to variable rate apply nutrients on the cropped fields.


Updates & Reports

2014

Project Description


Project Leader

Dick Puurveen, University of Alberta


Project Cooperators

None


IPNI Staff

T. Jensen


Location

Americas \ Northern America \ CAN \ Alberta


Topics

irrigation, nutrient use efficiency, soil analysis and sampling, soil chemistry

Nitrogen (N), Phosphorus (P)