Petiole Burst Occurrence and Yield by Controlled Number of Crowns and Flower Ousters of Ever-bearing Strawberry in Highlands

摘要

This study was undertaken to evaluate the yield and petiole burst occurrence rate of ever-bearing strawberry by controlling crown numbers per plant and the first flower cluster for summer production at highland. The cultivar 'Flamenco' was planted onApril 20 and split-plots were designed by managing the number of crown per plant in the main plot and the removed and non-removed first flower cluster in the sub-plot. Uptaken mineral amount of the plants showing petiole burst were higher than normal plants. Plants with one crown per plant showed 62-65% petiole burst rate in contrast to plants with three crowns per plant which showed 57-58% petiole burst. Date of initiation of the second flower cluster with less crown and removed first flower cluster was delayed. The flower clusters number of the plants managed with one crown per plant was 5.6, compared with 9.2 flower clusters of plants with three crowns per plant. The first harvesting with removed first flower cluster was delayed around 42-44 days. Aa a result, the yield performance of plants with two or three crowns per plant was 11,183-11,733 kg-ha~(-1) and the amount 65-75% higher than that of plants with one crown and removed first cluster.