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The Relation of Varying Rainfall to Soil Heterogeneity as Measured by Crop Production 1
Author(s) -
Metzger W. H.
Publication year - 1935
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/agronj1935.00021962002700040006x
Subject(s) - citation , relation (database) , crop , soil water , production (economics) , mathematics , field (mathematics) , agricultural engineering , agronomy , computer science , environmental science , soil science , library science , engineering , database , economics , biology , macroeconomics , pure mathematics
T HIRTY-SIX field plats, each ~/2o acre in size, were established at the Kansas Agricultural Experiment Station in i925 for the purpose of expanding the soil fertility investigations. Careful examination of profile samples showed no marked variations in the physical constitution of the soil of the area covered by these plats. It was considered desirable, however, to crop the plats uniformly for a few years before treatments were inaugurated in order to determine natural variability of the soil. Shortage of funds delayed the beginning of the fertilizer treatments longer than had been planned with the result that the plats have now been uniformly cropped for ~o years. :Yields have been obtained in only 9 years, however, because an exceedingly heavy chinch bug migration in x933 resulted in the loss of a crop of Atlas sorgo. During this period o£ years rainfall varied greatly and field observations indicated that the amount of rainfall was an important factor influencing the variability of the crop-producing power of the soil. The yields confirmed these observations. A study has, therefore, been made of this relationship.