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Soil Sampling in Relation to Soil Heterogeneity
Author(s) -
Hammond Luther C.,
Pritchett William L.,
Chew Victor
Publication year - 1958
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/sssaj1958.03615995002200060019x
Subject(s) - sampling (signal processing) , stratified sampling , soil science , simple random sample , environmental science , multistage sampling , sampling scheme , water content , soil water , hydrology (agriculture) , mathematics , statistics , geology , geotechnical engineering , physics , population , demography , estimator , detector , sociology , optics
Abstract Seven cultivated fields, pastures, and orchards—ranging from 2 to 35 acres in size—were sampled for one or more of the following: soil pH, soil moisture, and extractable K, Ca, Mg, and P. Cores 1 inch in diameter were obtained at various depths in a two‐ and three‐stage sampling scheme. For fairly uniform fields, the efficiency of multistage sampling relative to simple random sampling was found to be high. The data show that a convenient multistage sampling method could be used in many physical and chemical sampling surveys of fairly uniform fields or fields that could be stratified into uniform sections.