Abstract
Wasabis (Wasabia japonica Matsum.) have been used as a spice with its petioles and rhizomes, but the production of its rhizomes in upland cultivation was very difficult for the severe damage of rotting disease during summer season. This experiment was carried out to increase the yield of marketable rhizome in wasabi when cultured in upland. Seedlings were raised in sub-alpine area for 7 and 12 months and then transplanted to experimental area on Sept. 20 and the yield was investigated on May 12 of the next year. The marketable rhizome(above 40g/plant) was produced in seedlings raised for 7 months. Production rate of marketable rhizome was 13.3% and total yield was 72.9 kg/10a. The content of allylisothiocyanate in rhizome of upland wasabi was 0.777 mg/g and its content was equal to wasabi cultured in water condition for 18 months. These results suggested that the upland cultivation of wasabi seedlings raised in sub-alpine area for 7 months was possible to product marketable rhizome.
고추냉이 밭재배에서 강판에 갈아 생식할 수 있는 근경을 생산하는 작부체계를 개발하기 위해 중산간부 지역인 전북 진안군에서 12개월과 7개월간 묘를 육묘하였다. 육묘된 묘는 평야부인 전북 익산지역에 9월 하순에 이식되어 이듬해 5월에 근경수량을 조사하였다. 중산간부에서 7개월간 육묘한 묘에서 근경장 5cm 이상, 근경중 40 g 이상의 상품성 있는 근경이 13.0%의 비율로 생산되었고 72.9 kg/10a의 수량성을 보였으며 근경의 allylNCS 함량도 0.7771 mg/g으로 18개월간 물재배된 근경과 대등한 함량을 보였다.
