Do Critical Soil Phosphorus Concentrations Vary in Space and if so, Why?

IPNI-2016-USA-KY13

Project Proposal Read more


Year of initiation:2016
Year of completion:?
Map:

Interpretive Summary

2017

Approximately 70% of agricultural service retailers offer variable rate nutrient application, with much of this likely based on grid soil sampling. However research indicates that grids greater than 1/4 acre cannot be accurately interpolated to make variable rate prescriptions. Furthermore, not only does soil phosphorus (P) concentration vary across fields, but it is likely that threshold soil P concentration for crop response (the critical level) varies as well.


Updates & Reports

2017

2017 Annual Report

2016

2016 Annual Report

2016

Project Proposal


Project Leader

Joshua McGrath, University of Kentucky


Project Cooperators

None


IPNI Staff

Heidi Peterson


Location

Americas \ Northern America \ USA \ Kentucky \ Caldwell

Americas \ Northern America \ USA \ Virginia \ Montgomery


Topics

Phosphorus (P)