多年生水田雑草コウキヤガラの防除法確立に関する基礎的研究 : 第2報塊茎の萌芽および出芽について

概要

論文の詳細を見る
Previously we found that the perennial weed sea club-rush (Scirpus maritimus L., "Koukiyagara" in Japanese) is generated mainly from buds on the tubers. To control this weed, therefore, we need detail information on emergence and sprouting of buds on the tubers. The present investigation was undertaken to obtain such information. The results are as follows. 1. The distribution of tubers in the fields differed considerably from one paddy to the other. But, in each paddy, almost the same number of tubers was found at the depth of more than 10cm as in the shallow layer. 2. The tubers which were distributed within depth of 4cm in the soil emerged easily. 3. The emergence continued about a month. This was largely affected by the depth and by soil temperature. 4. Many tubers had three to five buds, and one or two of them sprouted. But by removing the buds which had already sprouted, one or two of the remaining buds began to sprout. 5. The longer the buds on a tuber, the earlier the sprouting. From these results, it is considered that such ecological control as competition with other species or changing of a paddy into an upland field will be useful to control this weed. In addition, in order to control it chemically, applying a long-lived herbicide or repeated applications of a herbicide may be needed.
日本雑草学会の論文
1981-09-10