Agricultural Meteorology Relation of the Weather to the Yield of Wheat in Manit
Agricultural Meteorology Relation of the Weather to the Yield of Wheat in Manit
A J Abraham James Connor
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The question needs two series to be analysed, one from light soil not fallowed, one from light soil previously fallowed. Such series are not yet available. For heavy soils which had been summer-fallowed the sign of the coefficient is reversed for range of temperature, while that for the rainfall of the whole season becomes very small. It would appear, therefore, as far as our short records can be relied upon, that a clayey soil summer-fallowed in the previous year has the best chance of carryin...g a wheat crop through heat and drought: but that any soil, save perhaps the very lightest, summer-fallowed, carries good assurance against failure. In view of the relatively large magnitudes of the correlation coefficients for the third 30 days in Manitoba, it appeared to be possible to express the resulting yields of grain as a function of the weather of the third period. The usual method of forming a regres- sion-equation did not seem to me to be applicable here since that would involve the average weather of the third period.
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