As global warming and consumer’s preference for tropical/subtropical fruits increase, the number of orchards cultivating tropical/subtropical fruits in Korea is increasing. Accordingly, concerns about the introduction of exotic invasive pests that host tropical fruits. In this study, efficacy of ethyl formate(EF), as alternative to methyl bromide(MB), was evaluated. Commercial trial of EF was conducted in mango post-harvest storage conditions for controlling Scirtothrips dorsalis. Application of 10 g/m3 of EF for 4 hours at 10 ℃ showed proven efficacy on S. dorsalis without any phytotoxic damage on mango fruits in that condition.

망고는 호광성 작물로써 많은 광을 필요하나 대부분의 농가에서는 하우스 내 밀식재배를 하기 때문에 수관내부의 광이 부족하여 생육이 잘 이루어지지 않고 과실의 착색 및 품질이 떨어지고 있다. 따라서 본 연구는 망고 하우스 내 토양에 다공질필름을 피복하여 수관하부의 광 환경을 개선하여 과실 품질 및 착색을 향상 시키며, 생육 시기별 피복 시기를 달리 하여 생육 별 피복 처리의 효과를 구명하고자 수행되었다. 1. 다공질필름 피복 처리 효과 1) 다공질필름 피복에 대한 광반사율은 대조구에 비해 처리구가 높았다. 2) 과중 및 가용성 고형물 함량의 변화에는 대조구에 비해 처리구가 높게 나타났으며 산 함량에는 유의 차가 인정되지 않았다. 3) 과피의 착색 정도에는 피복 처리가 대조구에 비해 착색이 잘 되었다. 2. 다공질필름 피복 시기별 처리 효과 1) 만개 후 5일부터 피복 처리를 했을 경우가 과중 및 가용성 고성물 함량이 높게 나타났으며, 산함량 및 과피의 착색정도에는 유의차가 인정되지 않았다. 2) 과실의 유리당 함량은 sucrose, fructose, glucose 순으로 많았으며, sucrose는 가용성 고형물 함량과 마찬가지로 만개 후 5일부터 피복했을 경우 높게 나타났다. 3)피복 시기에 따른 유기산 함량의 변화에는 유의차가 인정되지 않았다.

The experiments were conducted from April, 2010 to July, 2011 to explore the species richness of fruit fly and to observe the incidence of Bactrocera species by using Methyl Eugenol trap. In the first experiment, 11 species such as Bactrocera arecae, B. carambolae, B. dorsali, B. kandiensis, B. latilineola, B. malaysiensis, B. neocognata, B. raiensis, B. verbascifoliae, B. correcta and Carpomya pardalina were recorded. All species except Carpomya pardalina were observed in mango. Eight species in guava and five species in jujube were recorded. Bactrocera dorsalis was found to be the most abundant in mango and guava, and B. correcta in jujube. During the second experimental period, the experimental area can be recorded as an infested area because index of fruit fly population captured in traps, FTD (flies/trap/day), was seven. The highest population (437 flies/trap/week) was observed on May 26 in mango orchard. The number of fruit flies was observed to be significant positive correlation with weekly rainfall (R2 = 0.67 in mango, R2 = 0. 34 in guava and R2 = 0.43 in jujube) and relative humidity (R2 = 0.65 in mango), and negative correlation with mean temperature (R2 = 0.72 in mango) and sunshine hour (R2 = 0.61 in mango and R2 = 0.33 in jujube).

제주도에서 열대과수로 망고(mango; Mangefera indica), 용과(dragon fruit; Hylocereus undatus), 아떼모야(atemoya; Annona cherimola× A. squamosa) 등이 주로 재배되고 있다. 2008년부터 2011년까지 이들 작물에 발생하는 해충 종류와 피해를 조사하였다. 망고 해충 중 총채벌레, 진딧물, 깍지벌레, 나방류 피해가 많았다. 오이총채벌레(Thrips palmi)와 볼록총채벌레(Scirtothrips dorsalis)는 망고 전 재배기간에 걸쳐 발생하여 큰 피해를 주었다. 오이총채벌레는 주로 잎을 가해하였지만 볼록총채벌레는 잎과 과실을 심하게 가해하였다. 나방류 해충은 주로 잎을 가해하였지만, 일부 차애모무늬잎말이나방(Adoxophes honmai.) 유충은 망고 과경지를 중심으로 과실표면에 서식하여 과실 피해를 유발하였다. 목화진딧물(Aphis gossypii)과 복숭아혹진딧물(Myzus persicae)은 신초에 피해를 주었고, 가루깍지벌레(Pseudococcus kraunhiae) 등 깍지벌레는 망고 줄기와 과실에 많이 발생하였다. 용과는 개미와 목화진딧물(A. gossypii)에 의한 과실 피해와 담배거세미나방(Spodoptera litura) 유충은 줄기를 심하게 가해하였다. 아떼모야는 주로 나방류 해충인 담배거세미나방과 차잎말이나방(Homona magnanima) 피해가 심하였다.

The study was conducted to obtain the basic information for extending the harvest season and selecting superior cultivars of mango. For the purposes, various cultivars were imported and cultivated in greenhouse condition, Korea. The periods of flowering and fruit maturity and fruit qualities among cultivars were investigated under greenhouse condition. As the early variety, the harvest time of ‘Carrie’ and ‘Glenn’ was fastest as June 3 based on harvest time and cumulative temperature. ‘Kent’, ‘Philippine’, ‘Irwin’, ‘Choc-anon’, and ‘Fairchild’ as the early variety were harvested from June 8 to June 13. ‘Zill’, ‘Florigon’, ‘Alphonso’, ‘Mallika’, ‘Kensington Pride’, ‘Bailey’s Marvel’, and ‘Pinkering’ as midseason cultivar were harvested from June 15 to June 23. ‘Dot’, ‘Keitt’, ‘Gold Nugget’, and ‘Lancetilla’ as late ripening variety were harvested from July 5 to July 10. The fruit weights of ‘Keitt’ and ‘Kent’ were more than 650g and those of ‘Fairchild’ and ‘Lancetilla’ were less than 200g. The fruit weights of other cultivars were from 300 to 400g. The soluble solid contents of ‘Zill’, ‘Irwin’, ‘Kent’ and ‘Glenn’ were almost 15Brix and those of other cultivars were higher than that of ‘Irwin’. The soluble solid contents of ‘Pinkering’, ‘Philippine’, ‘Lancetilla’, ‘Dot’, and ‘Alphonso’ were about 20Brix and flavors of those cultivars are excellent. The acid contents of cultivars were investigated from 0.2 to 0.4% but that of ‘Fairchild’ was 0.8%.