This study compared the climatic conditions and fruit quality of the ‘Shiranuhi’ mandarin. This variety is expanding to inland areas due to climate change and global warming. The main producing area of ‘Shiranuhi’ mandarin is Jeju Island. In the inland areas where ‘Shiranuhi’ mandarin is grown, the average temperature is 12.9-13.9℃, which is 3-4℃ lower than the temperature in Seogwipo (16.9℃) on Jeju Island. In these inland areas, there are frequent critical minimum temperatures (below –3℃) in January or February, making the open field temperatures unsuitable for growing ‘Shiranuhi’ mandarins. However, farmers in these areas have managed to mitigate this risk by maintaining an average temperature of 18.3℃ inside plastic houses, which are actively heated from December to March. The earliest full bloom of ‘Shiranuhi’ was recorded in Jindo, Jeollanam-do on April 10. The earliest harvest date was observed in Seogwipo, Jeju on January 9, which indicates the shortest maturity period of 272 days. The cumulative temperature inside the greenhouse was highest in Wanju, Jeollabuk-do at 5,755℃. Buan, Jeollabuk-do (5,517℃) and Seogwipo, Jeju (5,518℃) had nearly identical temperatures. Significant differences in fruit quality were observed between the inland areas and Jeju Island. These differences were observed in fruit length, summit length, firmness, and the CIE b* value of the peel. The climate differences seem to have a greater influence on the factors that determine the fruit shape among the fruit quality characteristics. The yield per tree was higher in Seogwipo, Jeju (38.3kg) compared to the inland areas (30 to 34kg). Inland areas predominantly featured medium to small fruits (251-300g), while Jeju Island had a higher proportion of larger fruits (over 350g).

This study was conducted to present primary data for the development of functional beverages by measuring quality characteristics and antioxidant properties and preparing coffee with dried fruit powder. The pH, water content, and brownness were higher in the control group than in the fruit-added sample group. Total polyphenols were highest in the Prunus Fruit Coffee (PFC) at 2765.43±87.03 mg GAE/L. In terms of DPPH, the fruit addition group (consisting of dried apple, dried cherry, and dried plum) was higher than the control group, and the LFC was the highest at 70.04±2.01%. ABTS showed high antioxidant properties in all sample groups, and LFC showed the highest content at 83.01±1.06%. Caffeine was the highest in the control group, all sample groups showed lower content than the control group, and AFC showed the lowest content at 664.70±16.36. As a result, the fruit-added coffee groups are higher than the control groups in terms of quality characteristics and antioxidant properties, and it is considered that the fruit groups are suitable as functional food materials when developing coffee products.

본 연구는 국내 육성 품종 ‘선플’과 ‘감황’ 과실 생산에 적합 한 수분수를 선발하기 위해 ‘SKK2’, ‘델리웅’, ‘보화’, ‘Chieftain’ 각각의 꽃가루로 인공수분하여 과실 품질과 종자의 발육을 조 사하였다. 착과율은 두 품종이 모든 처리구에서 96% 이상이 었다. ‘선플’은 ‘델리웅’ 처리에서 과중이 가장 높았고 2021년 은 ‘보화’ 처리에서 2022년은 ‘Chieftain’ 처리에서 가장 낮았 다. ‘감황’은 2021년에 ‘델리웅’ 처리에서 2022년은 ‘Chieftain’ 처리에서 과중이 가장 높아 연차 간 차이를 보였다. ‘선플’의 과실 품질 조사 결과, 2022년에 건물률은 ‘SKK2’처리에서 가장 높고 가용성 고형물 함량은 ‘Chieftain’에서 가장 높았으 며 2021년에는 처리 간 유의차가 없었다. ‘선플’의 총 종자 수 와 미숙 종자 수는 6배체 수분수 처리구에서 가장 많았고 천립 중은 4배체 수분수 처리구에서 무거웠다. ‘감황’의 과실 품질 조사 결과, 건물률과 산 함량은 2년 모두 ‘SKK2’ 처리에서 가 장 높았고 가용성 고형물 함량은 연차 간 차이를 나타냈다. ‘감 황’의 총 종자 수와 성숙 종자 수는 ‘델리웅’과 ‘Chieftain’ 처 리에서 가장 많았고 미숙 종자 수는 ‘SKK2’ 처리에서 가장 적 었다.

This study examined the impact of two bacterial strains, H05E-12 and H05R- 04, on alleviating non-irrigation-induced stress and its subsequent effects on the fruit productivity of sweet pumpkin plants. When subjected to non-irrigation-induced stress, the lipid peroxidation, proline, total phenol, and total soluble sugar content significantly decreased in plants treated with either H05E-12 or H05R-04 compared to the control. In a greenhouse experiment under non-irrigated conditions, H05E-12-treated plants exhibited higher stomatal conductance than the control, although there was no significant change in the soil plant analysis development (SPAD) value due to treatment. Upon re-watering, an increase in fruit diameter was observed in H05E-12-treated plants, and the L-ascorbic acid content in the fruit also showed a significant increase compared to the control. The H05E-12 strain was identified as Kushneria konosiri. To the best of our knowledge, this is the first report detailing the beneficial effects of K. konosiri on the alleviation of non-irrigation-induced stress and the promotion of plant growth in sweet pumpkin plants.

The spectrum of this study was research on the closed hydroponic cultivation of netted melons (Cucumis melo L.) using coir substrate, analyzing the impact of this cultivation method on melon yield, fruit quality, and the efficiency of water and nutrient usage. The experimental results showed that the average fruit weight of the melons grown in a closed system was 71.4 g higher than that of the open system, and the fruit width was on average 0.2 cm larger, showing a statistically significant difference. However, there was no difference in the average sugar content of the fruit flesh and height. Although there is no substantial commercial difference, it is conjectured that the change in the macronutrients ratio in the irrigation has played a role in the statistically significant increase in fruit weight, which is attributed to changes in the crops' nutrient uptake concentrations. This necessitates further research for a more comprehensive understanding. In terms of the productivity of irrigation required to produce the fruit, applying the closed system resulted in an increase of 7.6 kg/ton compared to the open system, saving 31.6% of water resources. Additionally, in terms of nutrients, cultivating in a closed system allowed for savings of approximately 59, 25, 55, 83, 76, and 87% of N, P, K, Ca, Mg, and S, respectively, throughout the entire cultivation period. As the drainage was reused, the ratios of NO3 - and Ca2+ increased up to a maximum of 9.6 and 9.1%, respectively, while the ratios of other ions gradually decreased. In summary, these results suggest that closed hydroponic cultivation can effectively optimize the use of water and fertilizer while maintaining excellent fruit quality in melon cultivation.

This study was conducted to determine the optimal irrigation starting point by analyzing tree growth, physiological responses, fruit quality, and productivity in peach orchards. Seven-year-old ‘Kawanakajima Hakuto’ peach trees were used in an experimental field (35°49′30.4″N, 127°01′33.2″E) located within the National Institute of Horticultural and Herbal Science located in Wanju-gun, Jeollabuk-do. The irrigation starting point was set with four levels of –20, –40, –60, and –80 kPa from June to September 2022. While there were no significant differences in increase of trunk cross-section area and leaf area among treatments, shoot length and diameter decreased in the –80 kPa and –20 kPa treatments. The photosynthetic rate measured in August was highest for –60 kPa (17.7 μmol·m-2·s-1), followed by –40 kPa (15.6 μmol·m-2·s-1), –20 kPa (14.5 μmol·m-2·s-1) and –80 kPa (14.0 μmol·m-2·s-1). SPAD value measured in May and August was lower in the –80 kPa and –20 kPa treatments than in the –60 kPa and –40 kPa treatments. The harvest date reached three days earlier in the –20 kPa treatment compared to other treatments. The fruit weight was highest in the –60 kPa (379.1 g), followed by –40 kPa (344.0 g), –80 kPa (321.0 g) and –20 kPa (274.9 g). Firmness was the lowest in the –20 kPa treatment. The soluble solid content was highest in the –60 kPa treatment (13.3°Bx).The ratio of marketable fruits was highest in the –60 kPa treatment (50.7%) and lowest in the –80 kPa treatment (23.4%). In conclusion, we suggest that setting the irrigation starting point at –60 kPa could improve the fruit quality and yield in peach orchards.

Melon fruits exhibit a wide range of morphological variations in fruit shape, sugar content, net quality, diameter and weight, which are largely dependent on the variety. These characteristics significantly affect marketability. For netted varieties, the uniformity and pattern of the net serve as key factors in determining the external quality of the melon and act as indicators of its internal quality. In this study, we evaluated the effect of fruit morphology and growth on netting by analyzing the changes in melon fruit quality under LED light treatment and monitoring fruit growth. Computer vision analysis was used for quantitative evaluation of fruit net quality, and a three-variable logistic model was applied to simulate fruit growth. The results showed that melons grown under LED conditions exhibited more uniform fruit shape and improvements in both net quality and sugar content compared to the control group. The results of the logistic model showed minimal error values and consistent curve slopes across treatments, confirming its ability to accurately predict fruit growth patterns under varying light conditions. This study provides an understanding of the effects of fruit shape and growth on net quality.

This study was conducted to investigate optimal conditions for cutting propagation of the strawberry cultivar “Sulhyang” through the collection methods of cuttings (runners tips), leaf number of cuttings, and cutting time. Cuttings were collected from the mother plant in the nursery bed (MP) and plants after fruit harvest (HP); the leaf number of cuttings was 0, 1, and 2, and the cutting time was at one-week intervals from June 4 to July 9. The survival rates for MP and HP cuttings were notably high, reaching 99.5% and 98.7%, respectively, but no significant difference was found. The number of roots were higher in MP cuttings, and there was no significant difference in crown and leaf growth. The fruit yields were 419.2 and 428.4 g, for MP and HP cuttings, respectively. The survival rates according to leaf number of cuttings were 98.1% and 98.3% for 1 and 2 remaining leaves, respectively, and remarkably lower at 25.3% for no remaining leaves. The root numbers were 26.0 and 26.3 for 1 and 2 remaining leaves, respectively, compared with 23.5 for no remaining leaves, with no significant differences in crown and leaf growth. The fruit yields were 424.4 and 421.5 g for 1 and 2 remaining leaves, respectively, and 396.7 g for no remaining leaves. The survival rates according to cutting time was over 97.2% in all cutting time without any difference in each treatment. The root, shoot, and crown of the nursery plant before planting showed the best growth in the cuttings on June 4 and 11, resulting in the highest fruit yields of 433.3 and 426.4 g, respectively, with the lowest yields at 384.5 g for cutting time on July 9. Both MP and HP materials proved suitable for strawberry cuttings. The optimal leaf number for cuttings was at least 1, and the optimal cutting time in Gyeongnam area was evaluated as around June 4-11.

Yellow-fleshed "Sweet Gold" kiwifruit on Jeju Island were studied to examine how irrigation and soil moisture control affected changes in photosynthetic traits and fruit quality during fruit maturation (120 to 170 days after full bloom). Concerning photosynthetic characteristics, the photosynthetic rate decreased by 10-19%, stomatal conductance by 24-47%, and transpiration rate by 8-25%, when compared to conventional irrigation, as irrigation was reduced and soil moisture content decreased. Fruit weight showed a tendency to increase until harvest, and while a lower soil moisture content led to a less pronounced increase in fruit weight, this difference was not statistically significant. The dry matter rate exhibited a similar trend to the change in fruit weight. Sugar content demonstrated a continuous increase after 130 days, with lower irrigation amounts resulting in higher levels of sugar content due to decreased soil moisture. The Hue value (h°) exhibited a continuous decrease after 140 days from full bloom, correlating with declining soil moisture content. After 130 days from full bloom, soluble sugar content increased rapidly while starch content gradually decreased after 150 days from full bloom. However, with conventional irrigation, the increase in soluble sugar content tended to be less noticeable. This study confirmed that in yellow-fleshed ‘Sweet Gold’ kiwifruit, managing irrigation and soil moisture reduction during the ripening period can lead to decreased fruit weight but increased dry matter, sugar content, and expression of flesh color, ultimately enhancing fruit quality and expediting ripening.

This study investigated the quality characteristics of the traditional rice cake of Gijeongtteok added with an extract from Cudrania tricuspidate fruit and different amounts of kimchi broth. The pH measurement showed a significant decrease with the increase of the kimchi broth from pH 5.48 (control) to 4.86 (KG180). Hunter color L-values were decreased while redness and yellowness were increased as the amount of kimchi broth increased. Texture profile analysis showed that hardness and adhesiveness significantly increased and decreased as the amount of kimchi broth increased. Gijeongtteok with kimchi broth (KG180) had the lowest specific volume with increased gummy layers in the crumb structure. Sensory evaluation of color, flavor, taste, appearance, and overall acceptance for various levels of kimchi broth showed that the KG140 sample had the highest acceptability. Therefore, this study suggests that Gijeogtteok made with the KG140 mixing ratio has excellent quality and sensory characteristics.

생물환경조절학회지 30권 3호에 게재된 논문의 그래프를 수정합니다.

This study was conducted to evaluate quality and anthocyanin content of ‘Tarocco’ orange fruit in order to support early harvest. Harvest times were set at 280 days after anthesis (DAA), 300 DAA, and 320 DAA (conventional harvest). The fruits were classified as those having an intense reddish color or a yellowish orange color in the rind. The fruits were stored during 45 days at 8oC, for low temperature storage, or 18oC, for room temperature storage in winter. The changes in the fruit quality were measured at 15-days interval. The reddish rind fruit had slightly higher sugar content than the orange fruits with yellowish rind, but had similar acidity. A sugar content of 13.0 oBrix or more was recorded for fruits harvested 280 DAA with 45 days of low-temperature storage. A similar finding was recorded after 15 days of low temperature storage for the fruits harvested 300 DAA with 30 days for the conventional harvest. The anthocyanin content was higher for fruits with later harvest time (37.8 mg·L-1) and longer storage period in both low and winter room temperatures (25.2-53 mg·L-1 and 10.3-51.9 mg·L-1, respectively). For all harvest periods, the peel and juice color intensity increased after 15 days of low temperature storage and remained constant regardless of the storage temperature. The result indicated that the fruit quality and anthocyanin content of fruits harvested 300 DAA was better than fruits harvested 320 DAA (conventional harvest), stored 15 days at 8oC or 30 days at 18oC after harvesting 300 DAA.

The purpose of this study was to investigate the impacts of cane-based fruiting position on fruit quality at harvest in a golden-flesh kiwifruit variety, ‘Sweet Gold’ (Actinidia chinensis var. chinensis). The vines were grown on a pergola-trained system, under a protected plastic film house in Jeju, Korea. The cane-based fruiting positions were classified into six sectors with three sectors acropetally from the trunk to the apex of the leader, and two sectors acropetally from the leader to the apex of the cane. Fruits positioned in sectors far away from the trunk (sectors three and six) tended to be heavier, whereas fruits in sectors close to the trunk (sectors one and four) exhibited higher dry matter, soluble solid contents, and flesh coloration. The highest firmness was obtained at the fruits positioned far from the trunk and leader (sector six). Titratable acidity was slightly impacted. The highest starch content was obtained from the fruits of sector six far from the trunk and leader, whereas the highest soluble sugar content was from sector one proximal to the trunk and leader. Results indicate appreciable variations in fruit quality parameters at harvest, among fruits at different fruiting positions within vines. However, these variations were inconsistent over the years, and there were no distinct correlations among these fruit quality parameters.

This study examined the quality characteristics and antioxidant properties of fruit and vegetable jellies mixed with Boswellia. Jellies were prepared with 0, 2, 4, 6, and 8% Boswellia, sugar and konjac. As a result, the pH of Boswellia jellies decreased to 5.19, 5.05, 4.94, and 4.84, respectively (p<0.001). Their L-value, a-value, b-value, and hardness increased significantly with increasing levels of added Boswellia (p<0.001), while individual phenolic compounds increased significantly with increasing levels of added Boswellia. Free sugars and organic acid contents had the highest bw10. The total phenolic compounds had the highest BW5 (112.9 mg TAE/g), BW10 (99.41 mg TAE/ g), and while the ABTS activities showed higher values than the control group. Overall, Boswellia can be used to produce high-quality jelly, which is expected to help develop excellent functional jelly products.

이번 연구는 효과적으로 2화방 개화묘를 생산하여 조기에 토마토를 수확하고 수확 기간을 연장하기 위하여 적절한 양액 농도 관리방법을 구명하기 위해 실시되었다. 처리는 양액 농도 로 1줄기 2화방 개화묘 연구에서는 양액 EC를 1.5, 2.0, 2.5dS·m-1, 동적 관리(3.0 → 3.5 → 4.5dS·m-1)로 공급하였다. 육묘기간은 65일로 관행묘에 비해 20－40일, 1화방 개화묘 (큐브 육묘)보다는 10일 정도 길었다. 초장은 EC 2.5dS·m-1와 동적 관리는 각각 78, 77cm로 EC 1.5dS·m-1처리 88cm보다 짧았다. 정식 전 큐브 내 EC는 동적 관리가 EC 5.5dS·m-1로 가 장 높았으며, EC 1.5dS·m-1로 공급한 큐브는 3.0dS/m으로 가 장 낮았다. 2화방 개화묘에서 EC 처리 간 생산량 차이는 나타 나지 않았으나 1화방 개화묘는 2화방 개화묘보다 생산성이 떨 어졌다. 2화방 개화묘는 첫 수확일이 6월 4일로 정식 후 35일 만에 수확하였으며 1화방 개화묘는 6월 11일로 42일만에 수 확하였다. 절곡에 의한 초장 및 뿌리 생육의 차이는 나타나지 않았다. 2줄기 2화방 개화묘 생산 연구에서는 공급 양액 EC를 2.0, 2.5, 3.0dS·m-1, 동적 관리(3.0 → 3.5 → 4.5dS·m-1)로 하 여 공급하였다. 육묘 기간은 90일로 관행묘에 비해 40－50일, 1화방 2줄기 개화묘(큐브 육묘)보다는 10일 정도 길었다. 초장 은 공급 양액 EC 2.0dS·m-1에서 80cm, 2.5dS·m-1에서는 81cm였으며 3.0dS·m-1 처리에서는 75cm, 동적 관리에서는 73cm로 가장 짧았다. 배지 내 EC는 모든 처리에서 육묘 기간 이 길어질수록 높아졌으며 특히 공급 EC가 가장 높았던 동적 관리 처리에서 EC 5.1dS·m-1로 가장 높았다. EC 처리 간 생산 량 차이는 나타나지 않았으나 육묘 기간이 10일 정도 길었던 2 화방 개화묘가 1화방 개화묘보다 15% 정도 생산량이 많았다. 2화방 개화묘의 초장을 짧게 만들기 위해서는 가식 후 공급 양 액 농도를 높이는 방법이 가장 효율적인 방법으로 판단된다.

본 연구는 ‘스마트꿀’ 참외를 수확 후 ascorbic acid (AA) 및 salicylic acid (SA) 침지 처리와 PE film 처리가 저온저장(10℃) 중 과골 갈변 발생과 과실품질 변화에 미치는 영향을 조사하였다. 참외 과실의 저장기간 동안 과골 갈변 발생 정도는 무처리 과실의 경우 저장기간 동안 꾸준히 증가하여 저장 15일후 3.8 수준으로 증가하였으나, PE film 처리 과실은 저장 15일후 2.7 수준으로 낮은 과골 갈변 증상을 보였다. 참외 과실의 고유색을 나타내는 황색 과피의 황색도(b*)의 경우, 무처리 과실은 저장 15일 후 38.1로 감소하였으나, PE film 처리 과실은 저장 15일 후에도 39.8로 높은 황색도를 보였다. 흰색 과골 명도(L*)는 무처리 과실은 저장 15일 후 67.9로 감소하였으나, PE film 처리 과실은 72.9로 높게 유지되었다. 그리고 흰색 과골 적색도(a*)의 변화는 무처리 과실의 경우 저장 15일 후 1.0으로 증가하였나, PE film 처리 과실은 저장 15일 후에도 –1.4 이었으며, AA 처리 과실 역시 –0.5로 적색도 변화를 효율적으로 억제하였다. 가용성 고형물 함량은 무처리 과실은 저장기간 동안 점차 감소하였으나 PE film, AA 및 SA 처리 과실들은 거의 변화가 없었다. 그리고 과실 중량감소율은 무처리 과실은 저장 15일 후 1.98%이었으나, PE film 처리 과실은 1.33%로 가장 낮은 중량감소율을 나타내었다. 따라서 ‘스마트꿀’ 참외를 저장 및 유통할 때 과골 갈변 발생과 과색 및 품질의 변화를 억제하는데 PE film 처리가 효과를 보여 처리방법에 대한 효율적인 적용 방안을 모색할 필요가 있다고 판단되었다.

본 시험은 ‘감홍’/M.9 사과나무의 인력 적과 시기가 영양생장, 고두증상, 과실품질 및 이듬해 개화율에 미치는 영향을 조사하고자 실시하였다. 인력 적과 시기는 만개 후 3, 5, 7, 9주였으며, 1차 적과(중심과만 남기는 적과)와 2차 적과(착과수 조절을 위한 적과)는 동시에 이루어졌다. 인력 적과 시기는 영양 생장, 평균 과중, 생산량, 가용성 고형물 함량, 고두증상 발생 률 및 이듬해 개화율과 역의 상관관계를 가졌으나 나무별 중급 과실(과중이 214－299g이면서 고두증상이 발생하지 않은 과실)의 생산량, 잎 내 칼슘 함량 및 과실의 착색 정도와는 정의 상관관계를 가졌다. 과실의 경도, 산함량 및 나무 당 총 조수입은 인력 적과 시기에 영향을 받지 않았다. 결론적으로, ‘감홍’/M.9 사과나무의 인력 적과가 만개 후 9주에 마무리되면 고두증상이 없는 300g 정도의 고품질 과실을 생산할 수 있었다.

본 연구의 목적은 겨울철 약광기 보광 시 줄기 유인 수가 온실 파프리카의 생육, 과실의 품질 및 생산량에 미치는 영향을 구명하는 것이다. 파프리카는 2020년 10월 26일에 m 2당 3.2 주를 정식하였고, 2020년 12월 1일부터 고압나트륨등을 작기 종료일인 2021년 5월 25일까지 하루 16시간의 광주기로 조사 하였다. 줄기 유인 처리는 분지 이후의 생장점이 각각 2, 3개로 유지되도록 유인해 주었다. 초장은 2줄기 유인 처리구에 비해 3줄기 유인 처리구에서 유의적으로 짧았고 마디수 및 엽수는 2줄기 유인 처리구에 비해 3줄기 유인 처리구에서 유의적으 로 증가했다. 엽면적 및 기관별 건물중은 통계적으로 유의한 차이를 보이지 않았다. 과실 생체중 및 건물중은 모든 처리구에서 생육단계에 따라 감소하는 경향을 보였으며, 3줄기 유인 처리구가 2줄기 유인 처리구에 비해 낮은 수치를 보였다. 3줄 기 유인 처리구의 상품과율은 95.4%로 2줄기 유인 처리구의 93.6%에 비해 높았다. 총 수확량은 3줄기 유인 처리구에서 30.2% 높게 나타났다. 결론적으로 온실 파프리카의 3줄기 유인 재배는 적정 수준의 영양생장을 유지함으로써 과실 생산량에 긍정적인 영향을 미쳤다고 할 수 있다. 본 연구 결과는 파프 리카의 생산량 증대를 위한 농가 의사결정에 활용될 수 있을 것으로 사료된다.

본 실험은 암면과 코이어 배지의 이용에 따른 토마토의 생육, 생산성 및 품질 비교 및 재사용암면 이용가능성을 알아보기 위해 경북 안동시에 위치한 안동대학교 생명과학대학 자동 제어온실에서 진행되었다. 실험결과 토마토의 엽수, 초장, 엽 면적은 처리간 차이가 없었으며 줄기직경은 암면배지에서 약간 높은 경향을 보였지만 재사용암면 및 코이어배지간의 차이는 없었다. 과실생산성은 기상 조건에 따라 상이한 반응을 보 였지만, 암면, 재사용암면 및 코이어배지간의 큰 차이를 보이지 않았다. 또한 과실의 품질은 배지 내 EC의 농도에 따른 차이를 보였다. 따라서, 수경재배에서 토마토의 생육 및 과실품 질은 배지의 종류에 대한 차이가 없었으며 환경 및 급액관리 에 따른 영향이 컸다. 본 실험을 통해 토마토 수경재배에서 생육단계별 적정 수분관리기술이 적용된다면 암면의 재사용에 따른 경제성 향상에 기여될 수 있을것으로 판단된다.

우리나라 사과 재배에 가장 널리 이용되는 수형은 세장방추형으로 수령이 증가함에 따라 수관 내부의 광환경이 불량해진다. 전정을 통한 부분적인 수관 변경은 이러한 문제점 개선의 효율적인 대안이라고 할 수 있다. 본 연구는 이와 관련하여 나무 중간의 수관 변경에 따른 수관 내 광환경의 변화를 살펴보고, 과실 품질 향상을 위한 적절한 측지 관리 방법을 모색하고자 4.0 × 1.5m로 재식된 ‘감홍’/M.9을 대상으로 2년간 시험을 수행하였다. 처리 1은 측지를 짧게 단축하여 수관 폭을 좁게 만드는 것이었고, 처리 2는 측지를 유인하는 것이었으며, 처리 3은 대조구로 기존 세장방 추형의 수관을 유지했다. 1. 처리 1은 수관 하부로의 광투과율이 가장 높았고 기존 세장방추형에 비해 과중과 착색도가 높은 과실의 생산이 가능 했으며 높은 꽃눈 분화를 나타냈다. 2. 처리 2는 유인에 따라 가지의 중첩에 의한 음영 발생 증 가로 광투과율이 오히려 감소하였고 이에 따라 과실 착색의 저하를 초래하였다. 3. 따라서 광환경 개선과 하부의 과실 품질 향상을 위한 가 장 효율적인 측지 관리 방법은 중간에 위치한 측지를 길이 50 cm 내로 단축 전정하여 수관 폭을 좁게 유지하는 것으로 판단되었다.