딸기 직접 삽목 육묘의 실효성과 현장 적용 가능성 분석

Abstract

Pinning propagation is a traditional method for producing strawberry nursery plants in Korea. However, it requires a prolonged production period and high labor input while also causing physical stress due to the work involved. Here, we investigated a new strawberry propagation method to complement pinning. The experiment was conducted at a strawberry farm in Geochang-gun, Gyeongnam, using the ‘Seolhyang’ variety. Propagation methods included pinning, cutting, and cutting-direct-planting. Cutting-direct-planting was further divided into two groups: one treated with monopotassium phosphate (KH2PO4) and the other untreated. During the nursery period, tasks and labor time for each propagation method were recorded. Growth traits of nursery plants were measured before transplanting, and fruit yield was evaluated after transplanting. Total labor times were 579.7 h, 514.1 h, and 316.2 h for pinning, cutting, and cutting-directing-planting, respectively. Compared with those of pinning, cutting-direct-planting and cutting reduced the labor for fixing daughter plants and defolination by 46.6% and 47.2%, respectively. Crown diameter of nursery plant was greatest under cutting-direct-planting at 12.5 mm. Floral bud emergence occurred 3 days earlier in the cutting than in the pinning and cutting-direct-planting. In addition, treatment with monopotassium phosphate in the cutting-direct-planting accelerated bud emergence by 10 days compared with untreated plants. Fruit yield was higher under cutting-direct-planting at 445.3 g, compared with 397.1 g under pinning, and cutting-direct-planting treated with monopotassium phosphate produced the highest fruit yield of 501.5 g. The results showed that the cutting-direct-planting method saved tasks and labor duration while improving nursery quality and fruit yield compared with the pinning. These finding indicate its potential as a new strawberry propagation method.