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Commonly Occurring Errors in Interpretations of Yield Results from Single‐Rate Nutrient Comparisons 1
Author(s) -
Terman G. L.
Publication year - 1967
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1967.00021962005900030025x
Subject(s) - nutrient , yield (engineering) , mathematics , agronomy , environmental science , statistics , biology , ecology , physics , thermodynamics
The use of single‐rate nutrient comparisons and determination of effectiveness based on relative yields or yield increases over no applied nutrient result in ratings which are commonly too high. This arises from the application of such linear response models to curvilinear yield response with increasing amounts of applied nutrient. Yield results obtained only on the flat portion of a complete response curve are usually not meaningful for comparing nutrient sources.