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Growth Responses of Alfalfa and Sudangrass in Relation to Cutting Practices and Soil Moisture¹

Synopsis: Yield was associated directly with cutting interval, regrowth being stimulated by frequent cutting for only a short period. Water consumed, per unit of forage produced, decreased as length of cutting interval increased. Sudangrass used moisture from the upper foot of soil and was more efficient in water use than alfalfa during June, July, and August. Consumptive use of water was closely associated with rainfall during the period of active plant growth.

² Formerly graduate student, Department of Farm Crops (now Extension Agronomist, University of Arizona), Professor of Farm Crops, and Professor of Soil Science, Michigan State University, East Lansing, Michigan.