HE growing of alfalfa in certain areas of the northern T half of Wisconsin has been rather unsuccessful because of winterkilling. Consequently, the hay produced in that part of the state is often mostly timothy with some clover, and is therefore comparatively low in feeding value. Fortunately, recent experiments in these areas have shown that good crops of alfalfa can be grown, and winterkilling practically eliminated by proper lime and .fertilizer treatments. The main purpose of the present investigation was to determine how these treatments affect the chemical composition of the alfalfa plant so as to promote its ability to withstand winter injury, and thus continue to give satisfactory yields.
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