제주지방에서의 6쪽마늘 재배법 개선에 관한 연구 : 1. 파종기가 마늘의 생육 및 인경비대에 미치는 영향

박용봉 제주대학교 1984 논문집 Vol.17 No.-

This experiment was conducted during the period from September 2, 1982 to June 5, 1983 in order to examine the suitable planting time and growing condition in Cheju Island using the Sourthem garlic (Cheju jaere) and Nourthem garlic (6-clove garlic). 1. The earlier the garlic was planted, the higher the top part growth and 6-clove garlic decreased more than in early period. However, rather higher than Cheju jaere from the beginning of May. 2. The earlier the Cheju jaere was planted, the plant weight, top part weight increased remarkable more than 6-clove garlic. 3. As the bulb index was below 0.5 in the bulb formation of Cheju jaere, there was no difference between the planting time, but because the bulb formation of 6-clove garlic was over 0.5, the bulbing was slowing down. 4. Cheju jaere differentiated the clove in March. 10 and 6clove garlic April. 2 but the earlier the garlic was planted, the earlier clove differentiation and there was about 25 days difference between two varieties. 5. The later the Cheju jaere garlic was planted, the secondary growth increased. However, the earlier the 6-clove garlic was planted, the secondary growth increased.

제주지방에서 키토산 처리가 가을감자의 생육과 수량에 미치는 영향

박용봉,양국남,김기택 (사) 한국생물환경조절학회 2001 시설원예‧식물공장 Vol.10 No.4

This experiment was conducted to investigate the effect of chitosan on the growth and yield of fall-planted potatoes. The research was carried out in fall-planted potatoes from August 2000 to April2001 at the height of 250 m above sea level in Jeju Island. Soaking for 30 min. of seed potatoes in 20times diluted solution of 3% liquid chitosan shortened days to emergence by 4 to 6 days. Stem length,number of stems and number of stolons per plant were 56.5 cm, 4.3, and 19.0, respectively, when seedpotatoes were soaked for 30 min. in 20 times diluted solution of 3% liquid chitosan. Total potatoyield in this treatment reached 2,963 kg per 10a and was significantly greater than in other treat-ments. Yield of marketable tubers (greater than 30 g) per 10a for treatment of seed potatoes soakingin 20 times diluted solution of 3% liquid chitosan and for treatment of foliage spray with 200 timesdiluted solution of 3% liquid chitosan plus chitosan powder (10 kg per 10a) mixing with soil was2,761 kg and 2,628 kg, respectively. Contents of Mg, Fe and B were the greatest in the treatment of 30min. soaking of seed potatoes in 200 times diluted solution of 3% liquid chitosanm. The increased con-tents of these elements are considered to have caused yield increase as a result of increased chloro-phyll content for photosynthesis.

방사선 조사에 의한 제주산 양파의 발아 및 성분 변화에 미치는 영향

박용봉,김재하,김기택 한국생물환경조절학회 2000 한국생물환경조절학회 학술발표논문집 Vol.9 No.1

제주 지방에서 당근 재배품종의 특성평가

박용봉,김용덕,문정수 (사) 한국생물환경조절학회 2002 생물환경조절학회지 Vol.11 No.3

The overall objective of this study was to determine which variety of carrot-10 Japan varieties or 6domestic varieties- produces the optimum quality, when cultivated on Jeju Island. Plant height, leafnumber and leaf weight were observed to be more superior in the purebred variety ungangthanother varieties. Further studies, however, showed the crossing variety ureounwas superior to allothers. Furthermore, when comparing root diameter, root length and root weight, the ibarywassuperior in both the purebred and crossing variety. When researching Japan varieties, the crossingvariety, ungshowed an increase in underground root. The purebred variety onghaealso showedan increase in underground root. Marketable yields in domestic varieties were greatest in apawhile in Japan varieties, anekowas the most productive. The percentage of root cracked was 15%greater in ureon In the purebred variety, Jungang, the percentage was only 10%. The percentageof roots branched was highest in idomiwhich showed a rate of 9%. The roots branched rate was2% for ungand 6% for onghae Considering the percentage of roots cracked or branched, themarketability of carrots was higher in Japan varieties in comparison with domestic varieties. There-fore we conclude that, in the cropping patterns of carrots, the domestic variety has an advantage overthe Japan variety.

γ-ray 조사에 의한 제주산 양파의 발아 및 성분변화에 미치는 영향

박용봉,김재하,김기택 제주대학교 방사능이용연구소 2001 연구보고 Vol.15 No.-

제주지방에서 양파 저장에 관한 γ-ray 처리와 저장장소에 대한 실험을 하였다. 발아율은 저온저장, 상온저장, 동굴저장에 관계없이 무처리 양파는 약 5개월째부터 발아와 발근이 시작되었고 시간이 지날수록 증가하였으나 8월상순경에는 0Krad에서 동굴에 저장한 것은 50%, 상온에 저장한 것은 20%의 발아율을 나타내었다. 그러나 3Krad, 6Krad 처리한 것은 6개월까지는 거의 발아하지 않았다. 중량 감소는 발아와 밀접한 관계가 있는데 발아가 시작하기 전 40일 까지는 모든 처리에서 차이가 없었지만 발아가 시작되면서부터 급격히 감소하였다. 저온저장한 것은 부패율이 약 5~10%내외로 7개월후에도 식용이 가능하였으나 상온에 저장한 것은 0Krad에서 50% 정도 부패한 반면 3 Krad 및 6 Krad를 조사한 것은 저온저장인 경우 5%, 동굴저장인 경우 30 - 35%, 상온에 저장한 것은 30% 정도의 부패율을 나타내었다. 방사선조사의 다당류 변화에 대한 연구는 비교적 많이 이루어졌는데 동굴저장과 상온저장에서는 저장초기에는 3Krad 및 6Krad 조사한 것이 0 Krad보다 다소 증가 했으나 후기로 갈수록 역시 처리한 것이 양은 적으나 0Krad보다는 증가한 사실을 알 수 있었다. Allium속 채소류에 많이 들어있는데 유황은 저장장소에 관계없이 0Krad에서는 저장후반기로 갈수록 적어졌고 냉장저장한 것은 3 Krad 및 6Krad의 선량간에는 다소 차이가 있었으나 저장초기에는 유황함량이 증가하다가 12월 말경 부터는 점차 감소하는 경향을 보였다. For storage extension of Cheju grown onions, γ-ray irradiations with doses of 0Krad, 3Krad, and 6Krad were applied to onionbulbs produced in Cheju Island and their quality were compared during storage at natural cavern, low temperature (2℃), and ambient temperature. Sprouting began approximately from five months storage regardless of storage types which increased as storage extended. From early August, sprouting occured in natural cavern storage as high as 50%, in ambient temperature it was 20% in 0Krad, whereas onions with 3Krad and 6Krad γ-ray dose did not show sprouting until six months. No significant weight loss were observed in all the treatments until sprouting occured after 40 days of storage. The loss, however remarkably increased after 40 days of storage indicating that weight loss is closely correlated with percent sprouting during storage. Low temperature stored onions which showed 5-10% of rotting rates were still edible. Rotting rates reached to as high as 50% for unirradiated ambient temperature stored onions after seven months while they were 5%, 33%, and 30% in low temperature, natural cavern, and ambient temperature respectively in irradiated groups. Sugar contents were slightly increased in later period in irradiated onions under ambient temperature storage although sugar contents which included in Allium vegetables generally decreased in later storage of unirradiated onions. Sulfur contents slightly increased in early storage in irradiated onions while showed gradual decrease although the differences were not significant.

[특집 : 국제화시대의 제주도연구(자연과학분야)] 제주에 있어서 파종기, 종구저장온도 및 장일처리가 한, 난지형 마늘의 생육에 미치는 영향

박용봉 제주학회 1988 濟州島硏究 Vol.5 No.-

양배추 시들음병균 Fusarium oxysporum f. Sp. conglutinans의 특성과 품종별 저항성 검정

박용봉,고순보 제주대학교 아열대농업생명과학연구소 2002 아열대농업생명과학연구지 Vol.18 No.1

제4회 전국새마을기술지도사례-제주도

박용봉,고해종,Park, Yong-Bong,Go, Hae-Jong 한국과학기술단체총연합회 1979 과학과 기술 Vol.12 No.9

수경재배시 해수처리가 토마토 생육, 수량 및 품질에 미치는 영향

박용봉,김용덕 (사) 한국생물환경조절학회 2002 시설원예‧식물공장 Vol.11 No.4

The overall objective of this study was to improve tomato fruit quality, while maximizing yield. Thevariety of omotarowas grown in the basic nutrient solution of 1.6 dS m-1 which was supple-mented by three levels of seawater with EC 1.0, 2.0 or 3.0 dS m-1. Tomato plants were cultivated incool seasons. Plant growth characteristics were compared between treatments, and fruits were classi-fied to analyse fruit quality characteristics according to ripening stages: MG, Br, Br+3, Br+5, Br+7and Br+10. Adding seawater generally did not affect the shoot growth parameters such as plantheight, leaf length, leaf width, internode length and chlorophyll content. Adding seawater negativelyaffected yield parameters such as the height and weight of fruit, marketable fruit weight per plantand marketable fruit yield. Therefore, the more yield reduction was obtained with the increasing levelof seawater treatment. Fruit quality was improved by seawater treatment. The degree of the effect foroBx degree and sugars were the highest with the EC of seawater 2.0~3.0 dS m-1, and at theBr+5~Br+7 of ripening stages. The relative abundance of tomato flavor, volatie components, was notgenerally affected by the seawater treatment with an exception of 6-methyl-5-hepten-2-one. The rela-tive abundance of most volatile components increased as ripening progressed. The increment began atthe Br stage and showed the highest increment at the Br+5~Br+7 stages. The results from these exper-iments suggest that seawater treatment of EC 3.6 dSm-1 for hydroponics is good for improvingtomato quality. Fruit quality is the best at the Br+5~Br+7 ripening stages. It is considered that theseresults may be applied for use in hydroponic culture to improve fruit quality with minimum yieldreduction.

$\gamma$-ray 조사에 의한 제주산 양파의 발아 및 성분변화

박용봉,김재하,김기택 한국생물환경조절학회 2000 생물환경조절학회지 Vol.9 No.4

제주지방에서 양파 저장에 관한 ${\gamma}$-ray 처리와 저장장소에 대한 실험을 하였다. 발아율은 저온저장, 상온저장, 동굴저장에 관계없이 무처리 양파는 약 5개월 째부터 발아와 발근이 시작되었고 시간이 지날수록 증가하였으나 8월 상순경에는 0krad에서 동굴에 저장한 것은 50%, 상온에 저장한 것은 20%의 발아율을 나타내었다. 그러나 3krad, 6krad 처리한 것은 6개월까지는 거의 발아하지 않았다. 중량 감소는 발아와 밀접한 관계가 있는데 발아가 시작하기 전 40일 까지는 모든 처리에서 차이가 없었지만 발아가 시작되면서부터 급격히 감소하였다. 저온저장한 것은 부패율이 약 5~10% 내외로 7개월 후에도 식용이 가능하였으나 상온에 저장한 것은 0krad에서 50%정도 부패한 반면 3krad 및 6krad를 조사한 것은 저온저장인 경우 5%, 동굴저장인 경우 30~35%, 상온에 저장한 것은 30% 정도의 부패율을 나타내었다. 방사선조사의 다당류 변화에 대한 연구는 비교적 많이 이루어졌는데 동굴저장과 상온저장에서는 저장초기에는 3krad 및 6krad 조사한 것이 0krad 보다 다소 증가했으나 후기로 갈수록 역시 처리한 것이 양은 적으나 0krad보다는 증가한 사실을 알 수 있었다. Allum속 채소류에 많이 들어있는 유황은 저장장소에 관계없이 0krad에서는 저장후반기로 갈수록 적어졌고 냉장저장한 것은 3krad 및 6krad의 선량간에는 다소 차이가 있었으나 저장초기에는 유황함량이 증가하다가 12월 말경 부터는 점차 감소하는 경향을 보였다. For extension of storability, onion bulbs produced in Cheju Island were exposed to ${\gamma}$-ray irradiation at a dosage of 0, 3, or 6Krad and stored in a natural cavern, or in low (2$^{\circ}C$) or ambient temperature storage condition. Sprouting began from approximately five months in storage, regardless of storage condition, and increased as the storage period increased. From early August, sprouting as high as 50% occurred in the natural storage cavern, and 20% in ambient temperature storage when bulbs were treated with 0 krad ${\gamma}$-ray. However, bulbs treated with 3 or 6krad ${\gamma}$-ray did not any sprouting until six months in storage. No significant weight loss was observed in all treatments until sprouting occurred from 40 days after the initiation of storage. Weight loss, however, increased remarkably after 40 days in storage, indicating that it was closely related to sprouting during storage. Bulbs stored at 2$^{\circ}C$ showed 5~10% rot, but were still edible. Percent rot reached to as high as 50% in bulbs unirradiated and stored at ambient temperatures after seven months, while it in irradiated bulbs reached to 5, 33, and 30% at 2$^{\circ}C$, in a natural cavern, and ambient temperatures, respectively. Sugar contents slightly increased in irradiated bulbs in the later storage period under ambient temperatures, while sugar contents in irradiated bulbs in the later storage period under ambient temperatures, while sugar contents in Allium vegetables generally decrease in later storage if unirradiated. Sulfur content slightly increased in irradiated bulbs in the early storage period and decreased gradually in all treatments in the later storage stage.