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Soil Survey Interpretation—Yield Prediction
Author(s) -
Odell R. T.
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/sssaj1958.03615995002200020018x
Subject(s) - yield (engineering) , soil water , crop , crop yield , soil survey , mathematics , environmental science , soil science , statistics , agricultural engineering , agronomy , materials science , metallurgy , biology , engineering
Crop yield predictions can be made for specific soil, climatic, and management conditions if adequate data are available from surveys, farm records, experimental plots, or other sources. The accuracy of a crop yield estimate will of course depend upon the original data, but it also depends upon ( a ) whether the estimate is for 1 year or a period of years, and ( b ) whether it is for 1 tract or for several tracts. The latter kind of crop yield estimate approximates a soil type mean. Typical accuracy limits are given for crop yield estimates based upon different sample sizes and sources of data. Crop yields on farms tend to be from 75 to 95% of yields on experiment plots with similar soils and management practices. Illustrations are given of how crop yield data from various sources can be combined to indicate response curves and the productive capacity of different soils.