Studies on utilization of Ravenna grass (Erianthus ravennae) as a forage crop.
Ravenna grass (Erianthus ravennae) was investigated as a fodder crop for south-west Japan where growth of temperate species is limited by drought and high temperatures during summer. Ravenna grass began growth in Mar. or early Apr. when the average day temperature was about 10 deg C. Average annual DM yield decreased with increasing frequency of cutting, but palatability was low when cut only once each year. Application of >30 kg N/ha annually did not increase yields and 30 kg/ha gave N contents of about 0.2%. Irrigation had little effect on yield. Intercropping Italian ryegrass between ridges of Ravenna grass decreased the yield of Ravenna grass during winter, but the total annual yield of both was greater than that of Ravenna grass alone. DM content was high, ranging from 17% in young to 30% in old tissue. Nutrient contents were similar to those of maize or sorghum and total digestible nutrient content was 12.15% of fresh weight. F.en s.