Abstract
1. The effects of nitrogen fertilization and late fall clipping on the yield of bigflower vetch (Vicia glandiflora)-Italian ryegrass(Lolium multiflorum) mixed cultivation was studied. 2 So far as the yields of green forage or dry matter are concerned, single culture of the vetch was very poor, and on the contrary, ryegrass and the mixtures performed heavier especially when fertilized with sufficient nitrogen. In the cases of low nitrogen level, mixtures surpassed the single cultures. 3. Component of vetch in the forage was very low under the high level of nitrogen fertilization, but it was proceeded under the poor nitrogen level, especially at the later stages of growth when vetch thrived. 4. Total nitrogen percentages of the vetch forage was indicated about three times as much as of the ryegrass. Lowering of the percentages was observed with their growth. Thrice cut forages indicated higher percentages of nitrogen than the twice cut. 5. Mixtures yielded better than single cultures in total crude protein. Especially under the low nitrogen level of fertilization. they yielded highest, which was attributed to the fact that more parts of the yield were performed by vetch in this condition. 6. Thrice cuttings resulted same levels of total crude protein yield as the twice cuttings. in other words, late fall clipping did not reduce the yield.
