Studies on the nutritive yield of green-mowed Jerusalem artichoke : Part 3. Partial difference of nutrient comopnents

Abstract

(1) Study was made on weight of dry matter and ratio of leaves and stems, by dividing top of the plant into four parts, i. e., upper, middle and lower parts, and lateral branch. Chemical analysis was also conducted on leaves and stems. (2) The highest leaf-stem ratio was found in upper part (3.15). The ratio in middle part (1.00) ranked next, and reduction was seen in lateral branch (0.77) and lower part (0.08). The average ratio was 0.68. (3) As compared with stems, leaves contained more moisture content, protein, ether extract, and crude ash, and less crude fiber and nitrogen free extract. Remarkably higher T.P./C.P. was observed in leaves than in stems. (4) As compared with lower part of leaves, upper part of leaves contained more moisture, protein, ether extract and crude fiber, and less crude ash and nitrogen free extract. Upper part of stems contained more moisture, protein, ether extract and crude ash than lower part of stems, and less crude fiber and nitrogen free extract. High T.P./C.P. was observed in upper part of leaves and also in lower part of stems. (5) Ratio of carbohydrate against nitrogen free extract was high in stems, and low in leaves. Furthermore, the said ratio in both leaves and stems was high in lower part, and low in upper part, respectively. (6) Nutrient componentes in lateral branch and also in middle part of plant was about the middle of those in upper part and lower part. (7) The largest quantity of protein N was found in upper part of both leaves and stems, respectively, and least in lower part. In leaves, more protein N was found in middle part than in lateral branch, but in stems this relation was reverse. (8) As regards with various kinds of water soluble protein N contained in upper and middle part of leaves and of lateral branch, hot NaOH C2 H5 OH soluble nitrogen was most abundant, and water soluble nitrogen ranked next. In lower part, hot NaOH, C2 H5 OH was the largest, and NaOH soluble nitrogen followed next.