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Correlation Between Plant Analyses and Soil Tests in New Mexico
Author(s) -
Pack M. R.,
Gomez R. S.
Publication year - 1956
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1956.03615995002000040020x
Subject(s) - soil water , soil test , organic matter , soil organic matter , soil series , chemistry , nutrient , soil ph , agronomy , soil science , environmental science , soil classification , biology , organic chemistry
As part of a plant nutrient survey of New Mexico, samples of cotton leaves and alfalfa were collected from a wide variety of soils throughout the state. The soil was also sampled at each location. Within each set of samples (cotton and alfalfa) the following comparisons were made by means of correlation analysis: plant P with CO 2 ‐soluble soil P, NaHCO 3 ‐soluble soil P, H 2 O‐soluble soil P, and Bray's adsorbed soil P; plant N with total soil N and soil organic matter; and plant K with CO 2 ‐soluble soil K. Significant positive correlations were found in all comparisons except those involving N. The degree of correlation was used as a basis for evaluating the different soil testing procedures. Of the four P tests that were tried, H 2 O‐soluble soil P showed the best correlation with plant P. There was a better correlation between the H 2 O‐soluble soil P and the NaHCO 3 ‐soluble soil P than between the results of any other two of the soil P tests. Apparently, neither total soil N nor soil organic matter gives a reliable indication of the available N in New Mexico soils. The correlation between plant K and CO 2 ‐soluble soil K was fair.