Dry farming in western Canada . dryfarminginwes00brac Year: 1921 THE SUMMER FALLOW 175 organic matter and nitrogen and not water commence to limit the yield of crops, we shall have to restore them to the soil. Most men recognize this serious objection to fallowing, but before dispensing with the fallow they want to be shown a better way. It is to be hoped there- fore that on all soil types careful tests of organic fertilizers (such as manure) and the use of legume crops (nitrogen gatherers) may be conducted from time to time in order that we may know, for each of the dif- ferent types of soil
Dry farming in western Canada . dryfarminginwes00brac Year: 1921 THE SUMMER FALLOW 175 organic matter and nitrogen and not water commence to limit the yield of crops, we shall have to restore them to the soil. Most men recognize this serious objection to fallowing, but before dispensing with the fallow they want to be shown a better way. It is to be hoped there- fore that on all soil types careful tests of organic fertilizers (such as manure) and the use of legume crops (nitrogen gatherers) may be conducted from time to time in order that we may know, for each of the dif- ferent types of soil, whether the use of any or all of these means of improvement will pay. If crops require 250 to 1,000 pounds of water per pound of dry matter produced, and if the function of Fig. 69.—Sheep Pasturing in Rape. the fallow is to store and conserve water, then neither grass nor even hoed crops will replace the fallow, even though crops be rotated; but both, and particularly the hoed crops, will lessen the frequency of the fallow. The yield of wheat on corn ground at many different points has equalled the yield on fallow. Wherever lliis is true. and wherever the corn can be grown at no loss, or even
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