차근육묘를 위한 배지의 깊이 및 착근 시기가 ‘설향’ 딸기 자묘 소질과 정식 후 초기 생장에 미치는 영향

박갑순(Gab Soon Park),최종명(Jong Myung Choi) 한국원예학회 2015 원예과학기술지 Vol.33 No.4

‘설향’ 딸기 차근육묘에서 팽연왕겨 배지의 깊이 및 착근시기가 자묘의 생장과 본포 정식 후 초기 생장에 미치는 영향을 구명하고자 본 연구를 수행하였다. 배지 깊이에 따른 자묘 생장에서 초장은 50, 70, 및 90㎜ 처리가 컸고, 엽수, 관부 직경, 및 1차 근수는 처리별 차이가 인정되지 않았다. 뿌리 생체중은 배지 깊이를 70, 90, 및 110㎜로 조절한 처리가 30 또는 50㎜로 조절한 처리들 보다 뚜렷하게 무거웠고, 근장은 90과 110㎜ 처리가 가장 길었다. 지상부 생체중은 70㎜ 처리에서 가장 무거웠고 이 보다 얕거나 깊은 배지 깊이 처리들에서 생장량이 적어졌다. 착근시기에 영향을 받은 자묘의 생장에서 착근 시기가 빠를수록 초장, 엽면적, 관부 직경 및 생체중 등 생장이 우수하였다. 그러나 1차 근수 및 뿌리 생체중은 7월 1일, 7월 15일 및 8월 1일의 세 처리간 통계적인 차이가 인정되지 않았다. 착근시기가 빠를수록 근권의 왕겨 부착량이 많았으며, 체 진동기를 사용하여 왕겨의 제거율을 조사한 결과 7월 1일과 7월 15일 처리는 40% 미만, 8월 1일 및 8월 15 처리는 각각 64% 및 70%로써 정식 시 왕겨 제거를 위한 노동력 요구도가 높았다. 착근시기가 다른 자묘를 본포에 정식하고 45일 후 생육을 조사한 결과 7월 1일 및 15일 그리고 8월 1일 착근한 처리의 1화방 출뢰율은 93-100%, 8월 15일 처리는 67% 였다. 본 실험 결과 팽연왕겨 차근육묘의 적절한 배지 깊이는 70㎜, 그리고 착근시기는 7월 20-25일이며, 이상의 결과를 활용하여 육묘농가의 시행착오가 감소하고 양질묘가 생산될 수 있다고 예상한다. The objective of this research was to investigate the influence of various depths of expanded rice hull (ERH) medium and fixation dates of runner plantlets of ‘Seolhyang’ strawberry on the growths in nursery field and in plastic house soil after transplanting. The five treatments in medium depths (30, 50, 70, 90, and 110 ㎜) and four treatments in fixation dates (1st and 15th July and 1st and 15th August) were tested. The growths of runner plantlets were investigated before transplanting to plastic house soil. The early growth and inflorescence rates of crops after transplant to plastic house soil were also investigated. The plant height and fresh weight of runner plantlets were the highest in the medium depths of 50, 70, and 90 ㎜. The medium depth of 30 ㎜ had higher numbers of first roots, but lower root fresh weight compared to those of 70, 90, and 110 ㎜. The treatment of 30 ㎜ in medium depth showed poorer growth in all indexes except root length and root weight compared to those of 70, 90, and 110 ㎜. The runner plantlets fixed on July 1 and July 15 showed good root growth and the weights of ERH adhered to form root balls were 18.3 g and 13.9 g, respectively. The detached amount of ERH was less than 40% in the two treatments when root balls were shaken by a vibratory sieve shaker. The plant growth at 45 days after transplanting to plastic house soil were not significantly different when the runner plantlets were fixed in the period from July 1 to Aug. 1. The inflorescence rates of the first cluster were 93 to 100% when runner plantlets were fixed in the period from July 1 to Aug. 1. By contrast the runner plantlets fixed on the Aug. 15 had a 67% in florescence rate for the first cluster. These results indicate that optimum depth of ERH medium was 7 ㎝ and the ranges of optimum fixation dates are from July 20 to 25.

육묘과정 중 배양액 추비시용과 정식방법에 따른 "설향" 딸기 생육 및 수량에 미치는 영향

박갑순 ( Gab Soon Park ),강태주 ( Tae Ju Kang ),김영칠 ( Young Chil Kim ),안승원 ( Seoung Won Ann ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.2

This study was performed to identify the effect of fertilizer application and planting method on growth and yield of ``Seolhyang`` strawberry during seedling raising. According to the concentration of fertilizer applied, the height of daughter plants was the highest at an EC of 0.8 dS·m-1. Leaf number and crown diameter were greatest at an EC of 0.6-0.8 dS·m-1. In the first measurement, root number was highest in non-fertilizer application, while root weight was heaviest in non-fertilizer application and EC 0.4 dS·m-1. The higher the concentration of fertilizer applied as culture media, the lower the growth rate. Thirty days after planting on the main field, plant height and number of new leaf were highest at an EC of 0.8 dS·m-1. However, no significant difference was found in leaf length and width and chlorophyll content according to fertilizer application. Marketable yield of 25 g or higher was greatest in EC 0.6 dS·m-1. In contrast, no significance was found in total marketable yield at an EC of 0.4-0.8 dS·m-1. Aconsistent pattern was exhibited in the growth of 1-5 harvesting flower clusters according to planting method. The length of leaf and flower cluster was short and chlorophyll content was low, when bed soil was removed 100% in harvesting of the first flower cluster. In all treatment, leaf length was shortened until harvesting of the second and third flower cluster, but rapidly lengthened in harvesting of the third and fourth flower clusters. Moreover, the length of flower cluster had a increasing tendency from harvesting of the third flower cluster. However, chlorophyll content was reduced continuously until harvesting of the fifth flower cluster, and was lowest in harvesting of the fourth flower cluster without removal of bed soil. Total yield was greatest in treatment of crown removal in bed soil between November and May. Late marketable yield between March and May was highest in treatment of 100% bed soil removal, followed by treatment of crown removal. Marketable yield of 25 g or higher was greatest in treatment of crown removal between December and February, while greatest in treatment of 100% bed soil removal between March and May.

딸기 팽연왕겨 차근육묘를 위한 혼합상토 조성이 자묘의 지상부 생육과 발근에 미치는 영향

박갑순 ( Gab Soon Park ),김영칠 ( Young Chil Kim ),김명선 ( Myung Seon Kim ),안승원 ( Seoung Won Ann ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.2

This study was performed to identify the effect of mixed bed soil on growth of aerial parts and root zone of daughter plants for nursery field strawberry seedling raising with expanded chaff. The plant height and leaf area of daughter plants were highest or largest in the mixed soil of ERH +RH (100:0, v/v), followed by ERH+RH (75:25). The higher the mixing ratio of RH, the shorter the plant height or the smaller the leaf area. A similar tendency was observed in fresh weight. Within a root diameter of 0-0.4 mm and a root height range of 0.4-0.8 mm, root surface area and volume were statistically significantly better with treatment of ERH+RH (100:0, v/v) compared to those of roots treated with ERH+RH (75:25), ERH+RH (50:50) and ERH+RH (25:75). The growth rate of aerial parts and root zone of daughter plants were noticeably lower in two mixing ratios of 50:50 and 25:75. According to the mixing ratios of ERH+CD surface treatment, the number of roots was greatest in plants treated with ERH+CD (80:20, v/v) and ERH+CD (85:15) on August 1. However, the number of roots was highest in plants treated with ERH+CD (85:15, v/v) on August 15. Root length was longest in the plant with no treatment, and drastically shortened from ERH+CD (90:10, v/v) in both surface and mixed treatment. Although root weight showed a significant difference in ERH+CD (90:10, v/v) treatment, its increase was gradual. The rate of root growth was highest in ERH+CD (85:15). These study findings suggest that the content ratios of mixed soil ERH+RH (75:25, v/v) or below and ERH+CD (85:15) are thought to be desirable for the production of high quality seedlings.

연구논문 : 딸기 육묘과정 중 모주의 런너발생수가 자묘 소질과 1화방 수확기 생장에 미치는 영향

박갑순 ( Gab Soon Park ),안승원 ( Seoung Won Ann ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.1

To investigate the impact of the number of runners developed from daughter plants during seedling on sapling growth and development during phase of first cluster, we examined four treatment groups that had 3-4, 5-6, 7-8, and 9-10 runners. As of June 5^{th}, the group with 9-10 runners showed the highest number of saplings with more than 2 leaves, followed by groups with 7-8, 5-6, and 3-4 runners. Although observation on June 25^{th} and July 15^{th} showed a similar tendency for sapling numbers, no significant difference was detected between groups with 7-8 and 9-10 runners. The length of runners in the treated groups was similar to that in groups with 3-4 and 5-6 runners, with lengths of 49.4 mm and 48.0 mm, respectively, but runner length was significantly shorter in the group with 7-8 runners. Both the thickness and the weight of runners were highest in the group with 3-4 runners. The growth and development of daughter plants and root weight were similar between the groups with 3-4 and 5-6 runners, whereas both values were lower in groups with 7-8 and 9-10 runners. While stem crown thickness values were 8.7 mm and 8.5 mm in groups with 3-4 and 5-6 runners, respectively, groups with 7-8 and 9-10 runners had thinner stems of 7.1 mm and 6.2 mm, respectively. The fresh weight of saplings decreased as the number of runners increased. From the phase first cluster, leaf area and fresh weight were remarkably low in groups with 7-8 and 9-10 runners. Taken together, these results can be used to increase the production of high-quality saplings by providing a foundation for studies to investigate the impact of the number of runners developed from daughter plants on growth and development during the seedling period and the phase first cluster.

주요 딸기주산지에서 이용되는 육묘배지 종류 및 이화학적 특성

박갑순 ( Gab Soon Park ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.6

In Danseong-myeon (myeon is a subdivision of), Sancheong-gun, and Sugok-myeon, Jinju City, pot seedling culture was used at the rates of 100% and 62%, respectively. Root restriction seedling culture was used relatively more frequently than pot seedling culture in Yangchon-myeon, Nonsan City, Guryong-myeon, Buyeo-gun, and Wolsan-myeon, Damyang-gun. Open-field seedling culture was used at the rates of 80% and 54% in Samnangjin-eup (eup is a subdivision of a gun), Miryang City and Ssangnim-myeon, Goryeong-gun, respectively. In Danseong, Sancheong, and Sugok, Jinju, granite soil was used as the medium for pot seedling culture at the rates of 90% and 80%, respectively. In Yangchon, Nonsan, Wolsan, Damyang, and Ssangnim, Goryeong, commercial bed soil and coir dust were used for seedling culture at the rates of 73%, 64%, and 60%, respectively. At the main production sites, the use of granite soil for seedling culture, highest rate in 2000-2005, continued to decrease; in 2011-2013, granite soil was used at the rate of 37%, while commercial bed soil and coir dust were used at the rates of 32% and 14%, respectively. The bulk density of commercial bed soil, expanded rice hulls, and coir dust was 0.11-0.16 g/cm-3. Coir dust was the lightest material but had the highest and, 36.7% and 21.8%, respectively. In sandy loam soil and granite soil was low. The pH of all growth media was between 5.4 and 7.0, and the values were in the range of 0.15-0.66 dS·m-1. However it was necessary, to adjust the pH levels and enhance the of expanded rice hulls, sandy loam soil, and granite soil. Similarly, the fertilizer concentration and air permeability of coir dust need to be adjusted

딸기 육묘를 위한 모주의 정식시기가 자묘 소질 및 본포 초기생육에 미치는 영향

박갑순 ( Gab Soon Park ),김영칠 ( Young Chil Kim ),안승원 ( Seoung Won Ann ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.2

In this study, we examined the impact of transplant timing of mother plants for seedling strawberry on growth and development of daughter plants and field stage. The leaf growth of treated mother plants and crown thickness were low when transplant was performed on April 10th. Based on the results collected until July 13th, the numbers of daughter plants with more than two leaves were 20.6 and 19.5 for March 10th and March 25th, and these values decreased by April 10th and April 25th showing values of 15.1 and 11.8, respectively. After seedling growth was complete, leaf area and fresh weight of the saplings were remarkably low beginning from the transplant on April 10th. Crown thickness of saplings was generally lower when transplant timing was late. After 45 days of transplant leaf length and width were noticeably lower than the transplant on April 10th and 25th. First cluster was 100% for both the March 10th and 25th transplant, followed April 10th and 25th with values of 66% and 43%. The results revealed that transplant on March 10th and 25th had a greater positive impact on the growth and development of the strawberry cultivar ‘Seolhyang’. A supplementary study will have to be conducted to determine the relationship between the harvest period of the first cluster and the yield of marketable strawberries depending on the transplanting time of mother plants.

육묘 과정 중 포트에 충진된 팽연왕겨 혼합상토의 함수량 변화와 ‘설향’ 딸기의 생장 반응

박갑순(Gab Soon Park),김영칠(Yeoung Chil Kim),안승원(Seoung Won Ann),강희경(Hee Kyoung Kang),최종명(Jong Myung Choi) 한국원예학회 2015 원예과학기술지 Vol.33 No.1

팽연왕겨(ERH)가 혼합된 상토를 이용하여 ‘설향’ 딸기를 육묘하면서 용기 내 수분보유 특성, 그리고 모주 및 자묘의 생장에 미치는 영향을 구명하고자 본 연구를 수행하였다. 용기용수량 상태의 수분 함량은 팽연왕겨가 20-23% 범위로 딸기전용상토 60-66%, 양질사토 30-35% 및 마사토 30-34%와 비교할 때 매우 낮았다. 수분 함량은 관수 8시간 후에 10-12%로 급격히 낮아졌으며 연결포트의 각 셀당 수분편차가 크게 나타났다. ERH와 코이어 더스트(CD), 사양토(SL), 펄라이트(PL) 그리고 마사토(SMM)의 4종류 물질을 혼합하여 조제한 모든 상토는 pH 6.7-7.1, EC 0.03-0.08dSㆍm<SUP>-1</SUP> 범위로 측정되었고, 관수 20일과 40일 후에 뚜렷한 차이를 보이지 않았다. 자묘의 생육은 혼합상토 중 ERH + SL(55:45, v/v)에서 가장 우수하였다. ERH + CD 상토의 경우 CD의 혼합비율이 30% 이상일 때 생육이 저조한 경향을 보였고, ERH + PE는 혼합 상토 중 지상부와 근권부 생육이 가장 저조하였다. 팽연왕겨가 혼합된 상토에 정식한 모주의 생육은 정식 30일 후 ERH + PE와 ERH + CD 모두 PE + CD(50:50, v/v) 상토보다 저조하였다. 모주정식 90일 후의 생육은 ERH + CD 상토는 CD의 혼합비율이 높을수록 생육이 우수하였지만 정식 30일 후와 유사한 경향을 보였고, PE + CD(50:50, v/v)보다 저조하였다. 본 연구결과는 팽연왕겨를 포함한 혼합상토 조성과 이를 이용한 육묘과정의 수분 관리에 관한 기초자료로 활용될 수 있을 것으로 기대된다. This research was conducted to investigate the changes in moisture retention capacities of expanded rice-hull (ERH)-based root media and their influences on the growth of mother and daughter plants in vegetative propagation of ‘Seolhyang’ strawberry. The proportion of water at the container capacity of ERH medium was in the range of 20 to 23%. This range was lower than the 60 to 66% of strawberry-specialized medium, the 30 to 34% of soil mother material (SMM) and the 30 to 35% of loamy sand. The moisture content of ERH was reduced to 10 to 12% at 8 hours after irrigation, and there were large variations among replications of ERH medium. Among four kinds of root media formulated to contain ERH, the medium of ERH + coir dust (CD) (55 + 45%, v/v) had 26.5 and 32.5% water contents at 20 and 40 days after irrigation to daughter plants, respectively. The m edia o f ERH + sandy loam (S L) and ERH + SMM showed similar trends in moisture r etention. The pH and EC in the all root media tested were in the range of 6.7 to 7.1 and 0.03 to 0.08 dSㆍm<SUP>-1</SUP>, respectively. The pHs and ECs measured at 20 and 40 days after irrigation were not significantly different in each root medium. Among the root media formulated to contain ERH, the growth of daughter plants was the highest in the treatment of ERH + SL (55 + 45%, v/v). As the blending rate of coir dust was elevated in the ERH + CD media, moisture retention capacity increased gradually, but the growth of daughter plants became worse even though the medium showed higher moisture retention capacity than other root media tested. The growth of roots and aboveground tissues of daughter plants deteriorated in the root media formulated by blending ERH + perlite (PE) at various ratios. The results of this research suggest the optimum formulations of root media and management of moisture content in raising of strawberry daughter plants when ERH is a component of root media.

차근육묘를 위한 자재 및 배지 종류가 토양환경과 ‘설향’ 딸기 자묘의 생장에 미치는 영향

박갑순(Gab Soon Park),채수천(Soo Cheon Chae),오찬식(Chan Sik Oh),최종명(Jong Myung Choi) 한국원예학회 2015 원예과학기술지 Vol.33 No.4

‘설향’ 딸기 차근육묘에서 배지 및 차근자재의 종류가 자묘 생장에 미치는 영향을 구명하고자 본 연구를 수행하였다. 연구목적을 달성하기 위해 폴리에틸렌 필름이 차근자재인 조건에서 팽연왕겨, 사양토 및 양질사토 등 세 종류 배지가 자묘 생장에 미치는 영향을 밝혔다. 또한 폴리에틸렌 필름(PE), 부직포(NF), 유공비닐(PP) 및 방근시트(RPS)의 네종류 차근자재를 설치하고 팽연왕겨를 배지로 충진한 후 배지의 함수량 및 근권온도 변화와 자묘의 생장에 미치는 영향도 구명하였다. 런너에서 발생한 자묘를 세 종류 배지에 고정시키고 20일 및 40일 후 조사한 자묘의 생장에서 팽연왕겨 처리가 착근 20일 후의 엽 면적과 관부 직경, 그리고 40일 후의 관부 직경, 근중 및 생체중 등 지상부 및 뿌리생육이 가장 우수하였다. 네 종류 차근 자재를 깔고 팽연왕겨를 충진한 후 관수 주기별 배지의 수분함량(volumetric water content, VWC)를 조사한 결과 PE 처리는 관수 후 55%로 측정된 VWC가 관수 직전 26%로 낮아졌으며, PP는 10-16%, NF 및 RPS는 관수 후 다음 관수까지 10% 미만의 VWC를 유지하였다. 육묘 기간 중 PE 처리가 NF, PP 및 RPS 처리보다 차근 자재에 영향을 받은 오후 2-5시 사이의 배지온도가 약 1℃ 낮았고, 주 · 야간 온도차는 1.5℃ 적었다. 자묘의 초장, 생체중 및 근중은 PE 처리가 가장 크거나 무거웠다. NF 및 PP 처리는 뿌리가 차근되지 않아 자묘 뿌리가 차근자재 윗부분에 제한적으로 존재하지 못하고 자재 밑으로 많은 근계가 형성되었다. 이상과 같이 PE를 차근자재로 삼은 경우 팽연왕겨가 바람직한 배지이고, 차근 자재로써 PE가 NF, PP 및 RPS 보다 자묘의 생장에 더 우수한 영향을 미쳤으며, 본 연구 결과는 딸기 양질묘 생산을 위한 기초자료로 활용될 수 있을 것이다. This research was conducted to evaluate the influence of root restriction materials and media on the growth of runner plantlets of ‘Seolhyang’ strawberry in a nursery field. To achieve this, the influence of three kinds of root media on the growth of runner plantlets was monitored when polyethylene film was used as the root restriction material. In addition, the influence of various root restriction materials (RRS) such as transparent polyethylene film (PE), non-woven fabric (NF), perforated polyethylene film ( PP), a nd r oot proofing sheet ( RPS) o n the changes in v olumetric water content (VWC) a nd temperature o f root m edia as well as growth of runner p lantlet were investigated when expanded rice hull ( ERH) was used as the root medium. In the comparison of root media, growth parameters such as leaf area and crown thickness at 20 d after fixation as well as crown thickness and fresh weights of root and above-ground tissue at 40 d after runner plantlet fixation were higher in the ERH treatment than in sandy loam and loamy sand. When the influence of RRS was compared, the VWC of ERH was 55% just after irrigation, but decreased to 26% at just before irrigation. Ranges of the VWC as influenced by irrigation cycle were 16 to 10% in the PP and less than 10% in the NF and RPS. The soil temperature in the PE treatment was around 1°C lower than in NF, PP, and RPS. The differences between day and night temperatures were also smaller in the PE treatment rather than those in NF, PP, and RPS. The growths of runner plantlet 50 d after fixation showed that plant heights as well as fresh weights of root and above-ground tissue were higher in the PE treatment than in NF, PP, and RPS. NF and PP did not effectively restrict roots inside the medium and the roots of runner plantlets penetrated through the root restriction materials resulting in the formation of root system below the restriction materials. The above results indicate that ERH is more effective than sandy loam or loamy sand as root medium. PE rather than NF, PP, or RPS as root restriction material resulted in better growth of runner plantlets in propagation of ‘Seolhyang’ strawberry. The results of this research will be used for production of high quality runner plantlets in strawberry propagation.

‘설향’ 딸기 포트육묘를 위한 혼합상토 종류가 자묘의 생육과 정식 후 초기수량에 미치는 영향

박갑순(Gab Soon Park),김영칠(Yeoung Chil Kim),안승원(Seoung Won Ann),강희경(Hee Kyoung Kang),최종명(Jong Myung Choi) 한국원예학회 2015 원예과학기술지 Vol.33 No.2

‘설향’ 딸기 포트 육묘에서 상토의 종류가 자묘 생육 및 정식 후 초기수량에 미치는 영향을 구명하기 위해 본 연구를 수행하였다. 자묘 재배용 상토는 팽연왕겨, 딸기전용상토, 마사토 및 양질사토의 4종류였다. 정식 전 조사한 자묘의 생장은 딸기전용상토로 육묘한 처리가 초장, 엽 면적 및 생체중 등 지상부 생장이 가장 우수하였고, 마사토 처리는 초장, 그리고 양질사토 처리는 엽 면적 및 관부 굵기가 가장적거나 가늘었다. 팽연왕겨와 마사토 처리가 1차 근수가 많고 뿌리 건중량도 가장 무거웠으며, 딸기전용상토 처리는 모든 처리중 뿌리 건중량이 가장 가벼웠다. 뿌리직경 0-0.4㎜ 범위의 근장, 근 표면적, 근부피를 측정한 결과 팽연왕겨에서 뚜렷하게 우수하였다. 화아분화는 팽연왕겨 처리가 9월 3일, 마사토 9월 5일, 그리고 양질사토와 딸기전용상토 처리는 9월 7일에 시작되었다. 8월 30일 수확한 자묘의 지상부 건물중에 기초한 총 질소 함량은 1.41-1.55% 범위로 처리별 통계적인 차이가 인정되지 않았으며, 팽연왕겨 처리의 화아분화가 빨랐던 것은 왕겨의 낮은 보수력으로 인한 수분부족 스트레스가 중요한 영향을 미쳤다고 판단하였다. 본포정식후 11-12월의 초기수량에서 팽연왕겨 처리가 667g/10주, 마사토 581g, 그리고 양질사토와 딸기전용상토 처리는 각각 475g과 295g였고, 모든 처리에서 25g이상 상품과 비율은 73-100% 이었다. 이상의 연구결과는 육묘를 위한 상토의 종류가 자묘의 생육에 영향을 미침을 나타내고 있으며, 자묘의 근권부 생장과 화아분화 촉진 그리고 조기수량증대를 위해 본 연구 결과가 활용될 수 있을 것이다. The objective of this research was to investigate the influence of various root media on the growth of mother and daughter plants during propagation and early yield after transplanting of ‘Seolhyang’ strawberry. To achieve this, daughter plants were fixed to connected small pots that contained expanded rice-hull (ERH), a strawberry-specialized commercial medium (SSCM), soil mother materials (SMM), or loamy sand (LS). Then, growth of daughter plants in above- and below-ground tissue as well as early yield after transplanting to plastic house soil were investigated. The growth of daughter plants in terms of plant height, leaf area and fresh weight were the highest in the SSCM treatment. Root growth in terms of the amount of primary roots and root dry weight were the highest in the treatments of ERH and SMM and the lowest in that of SSCM, among treatments tested. The ERH treatment also showed the highest values among treatments in root length, surface area and volume when roots with 0 to 0.4 ㎜ in diameter were investigated. The flower bud differentiation of daughter plants began on Sept. 3 in the ERH treatments, earlier than the SMM (Sept. 5) and in SSCM (Sept. 7) treatments. The tissue N contents of daughter plants were in the range of 1.41 to 1.55% in all treatments, and no significant differences were observed among treatments. This indicates that the low moisture retention capacity of ERH and water stress, rather than tissue N contents, promote the flower differentiation of daughter plants. In the evaluation of early yield after transplant, the ERH treatment of showed the highest yield in the period from November to December, reaching 667 g fruit weight per 10 plants. The yields per 10 plants in the other treatments were 581 g in SMM, 475 g in SSCM and 295 g in LS. Above results imply that the various root media have different effects on the growth of daughter plants as well as flower bud differentiation. Therefore, improvement in early yield after transplant can be achieved through selection of proper root medium for daughter plant propagation.

EM 및 아미노산액비 시용이 "설향" 딸기 모주의 생육에 미치는 영향

안승원 ( Seoung Won Ann ),김영칠 ( Young Chil Kim ),강태주 ( Tae Ju Kang ),박갑순 ( Gab Soon Park ),이국한 ( Kook Han Lee ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.1

The dry weight of mother plants`` leaves had the highest increase rate in both NS (single-use) and NS+EM (mixed-use) mixed with NS 0.8 (customary use). In seafood amino acid fertilizer (SAF) application, the increase rate was highest in SAF solution at a 300-fold dilution. Mother plants`` crown diameter, plant height, leaf length, leaf width, petiole length and leaf number showed the greatest growth amount when NS 0.8 (customary use) was mixed to NS (single-use) or NS+EM (mixed-use) solution. The growth was highest in SAF solution diluted 300 folds, but lowest in SAF solution diluted 100 folds. Of all inorganic nutrients, excluding sulfur, total amount of nitrogen, available phosphorus, potassium, calcium and magnesium had the highest increase rate in both NS (single-use) and NS+EM (mixed-use) with the treatment of NS 0.8 (customary use). Total nitrogen, in particular, was increased by 3.1% in NS 0.4, 6.0% in NS 0.8, and 4.5% in NS 0.8 with the application of NS+EM at a 500-fold dilution compared to NS alone. Total nitrogen amount showed the highest increase rate in SAF solution diluted 300 folds. Total nitrogen, available phosphorus, calcium, magnesium and EC in soils applied with culture solutions (NS, NS+EM) had increasing tendencies after fertilizer application. The results were comparable to those of SAF treatment. The increase rate of each inorganic nutrient composition declined in soils applied with NS+EM solution diluted 500 folds compared to NS alone.