Abstract
The effects of seedling rate, fertilization, cutting time and frequency upon the yields of dry matter and nutrients were studied. It was not hard to obtain 2 to 3t dry matter per 10 are (more than 10t fresh matter) and 1.2t TDN, 0.14t DCP when the initial harvest was cut at heading stage followed by once or twice utilization, provided the field was fertile with much fertilization and the planting density was rather high. More frequent cuttings (4 times during the season) whenever the plants reached around 1m high decreased the yields (1t dry matter, 0.8t TDN and 0.1t DCP). However, sudangrass. may be still profitable in termes of yield as compared with other temperate grasses. It is suggested that sudangrass is a valuable crop to be grown in the southern Tohoku District during the summer time when the temperate grasses suffer from "summer depression".
