Potassium losses in runoff from cotton production fields

Potassium (K) loss in runoff represents a potential financial concern since fertilizer‐K is routinely applied to sustain optimal crop K nutrition and yield potential. Our research objectives were to quantify and characterize the soluble‐K loss in runoff from fields used for continuous cotton (Gossyp...

Full description

Saved in:
Bibliographic Details
Published in:Agronomy journal 2023-07, Vol.115 (4), p.1666-1677
Main Authors: Daniels, Mike B., Fryer, Matthew S., Fernandes, Samuel B., Slaton, Nathan A., Sharpley, Andrew N., Webb, Pearl, Riley, Lee, Burke, James, Berry, Lawrence G., Roberts, Trenton, Robertson, Bill
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Potassium (K) loss in runoff represents a potential financial concern since fertilizer‐K is routinely applied to sustain optimal crop K nutrition and yield potential. Our research objectives were to quantify and characterize the soluble‐K loss in runoff from fields used for continuous cotton (Gossypium hirsutum L.) production while determining if the time of the year (growing season vs. nongrowing season), type of hydrological event (irrigation vs. rainfall), and cover crops influence K loss in runoff. Field‐scale, edge‐of‐field monitoring of runoff water and its soluble‐K concentration was performed on 10 site years in southeastern Arkansas across three production seasons. The mean K loss in surface runoff per event was 0.98 kg ha−1 across all sites and events (n = 304). The relationship between loss of K mass to runoff volume was positive and significantly correlated (p 
ISSN:0002-1962
1435-0645
DOI:10.1002/agj2.21335