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신품종 감자 오륜과 미백의 소괴경 생산을 위한 분무경시 적정 재식밀도
전신재 ( S. J Jeon ),맹진희 ( J. H. Maeng ),이안수 ( A. S. Lee ),최성진 ( S. J. Choi ),김종환 ( J. W. Kim ),김인종 ( I. J. Kim ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2016 강원 농업생명환경연구 Vol.28 No.1
지상부 생육의 경장은 오륜 품종에서 재식밀도가 높아짐에 따라 64.8 cm에서 103.8 cm로 길어졌으나, 미백 품종은 경장, 경경, 마디수에서 재식밀도 간 차이가 없었다. 주당 생체중은 오륜 품종은 16주/㎡, 미백품종은 32주/㎡까지 차이가 없었다. 엽면적지수는 오륜 품종에서는 재식밀도별로 각각 4.4, 9.3, 12.0, 23.4로 직선적으로 높아졌고, 미백품종은 1.3, 2.4, 4.4, 5.3으로 약간 높아졌다. 주당괴경 수량성은 밀식에 의하여 괴경수와 총 괴경중이 감소하였다. 그러나 단위면적당 수량은 오륜품종은 처리별로 각각 2.14, 5.17, 6.65, 7.82 kg/㎡이었고, 미백품종은 1.38, 2.33, 4.60, 4.83 kg/㎡이었다. 소괴경 개수는 오륜 품종에서는 각각 54, 120, 180, 210개/㎡ 이었고, 미백 품종은 89, 150, 294, 357개/㎡ 이었다. 평균 서중은 미백 품종 15.1 g, 오륜 품종 39.2 g 으로 품종 간 차이는 있었으나, 처리에 따른 차이는 크지 않았다. 소괴경 생산을 위한 조직배양묘 분무경시 최대수량을 보이는 재식밀도는 두 품종 모두 64주/㎡이었으나, 조직배양묘의 소요량, 지상부 과번무에 따른 병해 발생 우려 등을 고려했을 때 32주/㎡가 적정할 것으로 판단되었다. This study was conducted to optimize planting density for potato micro-tuber production in spring season. Potato in vitro plantlets, cv Oryun and Mibaeg, were grown aeroponically at four different plant densities (8, 16, 32 and 64 plants/m2). Plant height was increased in Oryun varieties from 64.8 cm to 103.8 cm with increased planting density, but in Mibaeg did not differ at height, stem diameter and the number of nodes. Fresh weight was no difference up to 16 plants/㎡ in Oryun and 32 plants/㎡ in Mibaeg. Leaf area index was linearly increased in Oryun 4.4, 9.3, 12.0 and 23.4, respectively. But Mibaeg was slightly increased from 1.3 to 5.3. The number of tubers and weight per plant was decreased by high planting density in both varieties. However, the yield per square meter were 2.14, 5.17, 6.65 and 7.82 kg in Oryun, 1.38, 2.33, 4.60 and 4.83 kg in Mibaeg. We also observed that the number of micro-tubers, in Oryun 54, 120, 180 and 210 and in Mibaeg 89, 150, 294 and 357. The average tuber weight was 39.2 g in Oryun and 15.1 g in Mibaeg, but there is no difference among the planting density. Even though the maximum yields were 64 plants/㎡ in both varities, we concluded that 32 plants/㎡ were optimum planting densities, considering the requirments of plantlets and disease caused by excessive planting.
신품종 감자 “미백”의 씨감자 소괴경 생산을 위한 분무경과 배지경의 비교
전신재 ( S J Jeon ),맹진희 ( J H Maeng ),이안수 ( A S Lee ),최성진 ( S J Choi ),김종환 ( J W Kim ),김인종 ( I J Kim ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2015 강원 농업생명환경연구 Vol.27 No.3
Two different cultivation systems, aeroponics and hydroponics, were compared for the production of new potato cultivar ‘Mibaeg’ minitubers. Plants in the aeroponics showed increased vegetative growth in height, fresh weight, root length, and number of stolen. Also, the number and weight of minituber were increased in aeroponics. In aeroponics, the number of tuber was 9.1 per plant and the weight was 180.2 g. On the other hand, there was no difference in average tuber weight. The ratio of tuber height and width was higher in aeroponics. Tubers grown in aeroponics showed an increased number of opended lenticels, due to hight humidity conditions in the system. The characteristics of breaking dormancy and sprouts were no difference in cultivate system, but size of tuber was effected.
강원도 아스파라거스 포장에서 끈끈이 트랩을 이용한 총채벌레 모니터링
전신재 ( Jeon S. J. ),김삼규 ( S. K. Kim ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2018 강원 농업생명환경연구 Vol.30 No.2
Thrips are among the most important insect pest on many agricultural crops, including asparagus. In this study, we monitored thrips in asparagus greenhouses in Yanggu, Gangwon Province using different colored sticky traps from 2016 to 2017. In total, four species of thrips on asparagus were found: Frankliniella occidentalis, F. intonsa, Thrips tabaci, and T. palmi. Among them, the onion thrips, T. tabaci, was the most abundant thrips throughout the year. In total, 1,286 and 1,236 individuals of thrips were caught on 166 yellow and blue sticky traps, and 4,412 and 2,541 were caught on 228 yellow and blue sticky traps in 2016 and 2017, respectively. The number of thrips attracted to sticky traps was significantly different between the yellow and blue sticky traps in 2017, but was not in 2016. The highest numbers of thrips were recorded at the end of May and mid-June in 2016, but this shifted to mid-July in 2017. This result indicated that the onion thrips population was greatly affected by many variables, such as temperature, pesticide application, and harvest time.