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On‐farm corn phosphorus response reveals importance of soil testing
Author(s) -
Rutan Jeff,
Steinke Kurt
Publication year - 2021
Publication title -
crop, forage and turfgrass management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.29
H-Index - 10
ISSN - 2374-3832
DOI - 10.1002/cft2.20105
Subject(s) - fertilizer , phosphorus , soil fertility , agronomy , grain yield , soil test , yield (engineering) , environmental science , sampling (signal processing) , soil water , soil science , chemistry , engineering , biology , materials science , organic chemistry , electrical engineering , filter (signal processing) , metallurgy
Core Ideas Increased soil test P values above the critical threshold reduces the likelihood of grain yield response to P fertilizer application. Soil test P critical concentrations of 14 ppm indicated no change from Tri‐State Soil Fertility recommendations. Shallower soil sampling (0–2 inches) did not improve relationship between soil test P concentration and relative grain yield.