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The Carotene Content of Several Herbages during the Growing Season^*

Section of Dairy Husbandry, Michigan Agricultural Experiment Station, East Lansing

ABSTRACT

1. Variations in the carotene content of seven herbages were studied during their growing season. These herbages included alfalfa, brome grass, corn leaves, the oat plant, the soybean plant, Sudan grass, and sweet clover.
   
2. The carotene content of these herbages is much greater during the earlier stages of growth than after they reach the stage of maturity at which they are usually harvested.
   
3. The carotene content, when calculated in terms of micrograms per gram of dry matter shows a rather progressive decrease as the plants mature except where affected by factors governing the rate of growth.
   
4. In making hay or silage, in order to obtain the greatest carotene content the plants should be cut at an early stage of maturity.
   

^* Journal article No. 398 n.s