Yellow Nutsedge(Cyperus esculentus)の個生態に関する研究

概要

論文の詳細を見る
In June, 1986, 15 ha of corn fields at Nasu in Tochigi pref. were found to be infested with yellow nutsedge (Cyperus esculentus L.). The weed seemed to be propagated from seeds which had contaminated packed hay imported from the United State. Since the propagation density and the plant height of the weed were larger than those of purple nutsedge (C. rotundus L.). The growth of the crop was markedly inhibited. This study carried out oralyse the ecological and physiological characteristics of the weed, yellow nutsedge. Result obtained are as follows. 1) Yellow nutsedge grown in Nasu area was indentified as C. esculentus var. leptostachyus based on the inflorescence pattern, plant type and the shape of the tubers. 2) In the pot test, two mother tubers of purple and yellow nutsedge produced 16-26 and 100-120 tubers in a year, respectively. The mean weight of a tuber was 1.26g in the former and 0.12g in the latter. The maximum plant height of yellow nutsedge was 107.4 cm which was almost 5 fold that of purple nutsedge, 21.5cm. 3) Although number of tubers formed decreased with the increase of the depth of the position of the mother tubers in soil, the weed was able to propagate from the tubers planted at a 28 cm depth in soil. 4) Cutting of the above ground parts of the weed, or 2 cm from the basal position and at different growth stage affected tuber formation which was markedly reduced by cutting when the plant height was 40 cm.
日本雑草学会の論文
1990-07-27

Yellow Nutsedge(Cyperus esculentus)の個生態に関する研究

スポンサーリンク

概要

著者

関連論文

スポンサーリンク