사료자원으로서 Chufa(Cyperus esculentus L.)의 생장특성과 사료가치

다국어 초록 (Multilingual Abstract)

Chufa(Cyperus esculentus L.) belongs to one of the sedge family and grows well in summer. The aboveground part of chufa is mostly consisted of leaves and the underground part is mostly composed of a clump of fibrous root with tuber. At the seeding year, it does not reproductive development but produces a lot of tuber. It produced many tillers from the tuber and grows in clumps as a bunch type.
The plan1 height of mature chufa was 73 to 75cm and it grown fully in the middle of July. The number of tillers ere increased rapidly until the end of July and still increased slowly after August but it showed very poor growth.
The final fresh weight and dry matter yield of aboveground part of chufa were 40.3 ton/ha and 12.1 ton/ha, respectively. The regrowth of aboveground part was vigorous in the early stage of growth after 1st cutting but it was decreased rapidly after the second cutting.
In control plot, the number of tubers per a clump were 722 at final stage and their fresh and drymatter yields per m2 were 4.2kg and 1.9kg, respectively. In experimental plots, the amount of tubers was decreased stcadily according to delay of cutting date, but late cutting date was not affect the tuber formation severely because the tuber produced already early in August.
The nutritive value of chufa in vegetative growth stage was good but it was decreased according to growing up. The contents of crude protein(CP), neutral detergent fiber(NDF), dry matter digestibility(DMD) and total digestible nutrients(TDN) of aboveground part of chufa harvested finally were 6.1%, 81.5%, 39.8%, 33.2% and 39.4%, respectively. The contents of crude protein(CP), neutral detergent fiber(NDF), dry matter digestibility(DMD) and total digestible nutrients(TDN) of tubers of chufa were 6.1%, 81.5%, 39.8%, 33.2% and 39.4%, respectively and the content of oil was as high as 16.2%, cspecially.