• 발명특허
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• v.1 no.10 s.10
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• pp.3-5
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• 1976

• KOREAN POULTRY JOURNAL
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• v.5 no.4 s.42
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• pp.61-64
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• 1973

• Food Industry
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• s.70
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• pp.93-94
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• 1983

• Elastomers and Composites
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• v.23 no.4
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• pp.324-333
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• 1988

• Korean Journal of Plant Resources
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• v.15 no.1
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• pp.62-66
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• 2002

To investigate the critical seeding date for Daeyeupdlkkae in the middle area of Korea, we seeded from 30 April to 20 July with 20-day intervals on the experimental field in Chungbuk-Do agricultural research and extension service. As seeding date was delayed, days to emergence were shortened, flowering and maturing date were delayed, but maturing period was not significantly affected by seeding date. Delayed seed date resulted in decreased stem length, culm diameter, number of branches per plant and number of nodes on the main stem. Cluster length and 1,000 grain weight increased but number of cluster per plant and number of seed capsules per cluster decreased with delayed seeding. Seeding date up to 10 June showed no effected on grain yield, but 30 June and 20 July decreased 10% and 38%, respectively.

• Horticultural Science & Technology
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• v.32 no.1
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• pp.41-45
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• 2014

This study was conducted to investigate the effects of crown numbers on growth and yield of ever-bearing strawberry (Fragaria ${\times}$ ananassa Duch.) 'Goha' cultivar. Strawberry seedlings were planted with $55{\times}30cm$ distance on April 29, and the randomized block experimental was designed by putting the crown numbers by 1, 3, 5 and crown-unremoved as the control. At the early growth stage, as the numbers of crown decreased, the size of leaf became larger and inflorescence diameter became thicker. Plant height became higher as the number of crown increased at the final harvesting time. Fresh weight of crown-unremoved plants was 118 g, showing 77.2 g higher than that of plants with one crown. Numbers of the developed inflorescence of plants with five crowns and crown-unremoved was 20.1, whereas 6.8 of plants with one crown, resulted in 13.3 more crowns. However, crown number did not significantly affect the fruit quality. As the crown number increased, the average fruit weight was lighter and the marketable fruit rate was shown to decrease significantly. The marketable yield of crown-unremoved plants was $17,372kg{\cdot}ha^{-1}$, showing 68% higher than plants with one crown. Therefore, crown management without thinning crowns was recommended and inflorescence thickness less than 3 mm should be removed for successful production of ever-bearing strawberry 'Goha' cultivar during summer season.

• Journal of Bio-Environment Control
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• v.15 no.4
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• pp.335-339
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• 2006

Effects of deficit irrigation by different soil moisture-based water potential on total soluble solids and fruit yields in fresh tomato were investigated. Amount of irrigation was saved about 11%, 25% and 41% at -20 kPa,-30 kPa and -40 kPa treatment compared to the -15 kPa treatment as a standard practice, respectively. Deficit irrigation with -30 kPa and -40 kPa treatment significantly increased total soluble solids by 11% and 24% at first truss compared to the -15 kPa treatment, with no significant loss of yield, respectively. However, deficit irrigation with -30 kPa and -40 kPa treatment significantly increased total soluble solids at second and third truss, but resulted in substantial yield loss compared to the standard practice. Total fruit yields at -30 kPa and -40 kPa treatment was decreased by 16.5% and 25.1% compared to the -15 kPa treatment. However, marketable fruits based on fruit size (150$\sim$250g) was increased by 27.8% at -30 kPa treatment compared to the -15 kPa treatment.

• Journal of Bio-Environment Control
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• v.23 no.4
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• pp.309-313
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• 2014

This research was conducted to establish recommendable side shoot management methods in the growth and yield of tomato in winter. A cherry tomato, $^{\circ}{\times}Unicorn^{\circ}{\pm}$ (Monsanto Korea, Korea) was cultivated in coconut coir in the form of bag as substrate. There were four treatments related to side shoot removal methods; 1) To remove all side shoots and also each one of three leaves which gives shade to each cluster attached below (UP-FL), 2) To remove all side shoots and also each one of three leaves which gives shade to each cluster only with fruit attached below (UP-FR), 3) To remove all side shoots (AS-All), and 4) To remain two leaves of each side shoot coming from right below each cluster (AS-Part). The number of malformed leaves were more in UP-FL, UP-FR, AS-All, and AS-Part in descending order, which showed the severe the removal of leaves the more the malformed leaves. The malformed leaves were diminished after the development stage the second or third cluster bloomed. The yields until fifth cluster were not different among the treatments. Therefore removal of side shoots and leaves recommends not to be done severely in early growth stage when tomato plants are cultivated in winter.

• Current Research on Agriculture and Life Sciences
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• v.31 no.4
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• pp.265-271
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• 2013

The objective of this study was to find out the optimum number of fruiting per a flower cluster on 5 domestic strawberry cultivars (Fragaria${\times}$ananassa Duch.), 'Daewang', 'Ssanta', 'Okmae', 'Seolhyang' and 'Maehyang'. Therefore, three ways of fruit thinning, 4~5 fruiting, 7~9 fruiting and all fruiting per a flower cluster were compared. After fruit thinning, the first fruit weights were increased from the second flower cluster on 'Seolhyang' and 'Maehyang', but from the third one on 'Daewang' and 'Ssanta'. There was no difference in first fruit weight by the flower thinning ways on 'Okmae'. The mean fruit weights of all the cultivars were increased and sugar contents also were increased, but acidities were decreased. The peduncle lengths were shortened by fruit thinning, but there was no difference in number of leaf, petiole length and crown diameter. Marketable yields by 4~5 fruiting per a flower cluster than all the fruit setting were higher 4.3% and 6.6% respectively on 'Daewang' and 'Maehyang'. In contrast, the yields were higher 3.1%, 3.5% and 9.1% in 7~9 fruiting per a flower cluster than all fruiting on 'Ssanta', 'Okmae' and 'Seolhyang' respectively. As the result, we could improve the fruit quality and could increase marketable yield by fruit thinning with matching flowering characteristics of those strawberry cultivars.

• The Journal of Natural Sciences
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• v.14 no.2
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• pp.103-114
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• 2004

This study aims at investigating the effect of soil moisture control and truss limited high density culture on the growth, fruit yield and quality of tomato. To minimize of loss yield of tomato, flower cluster in number was limited to two and three truss and planting density was raised. Soil moisture control was started from 40 days after anthesis and irrigation point was set in -30kPa and -50kPa, which were compared with -10kPa For high density culture, the planting number of truss limited high density culture was planted twice as many as control. Soil moisture repression reduced the growth of stem diameter, leaf and plant height. Leaf chlorophyll content was higher in -50kPa and -30kPa than control. No significant differences, however, shows in -10kPa. The occurrence rate of bloom-end rot and cracking was increased by growing of irrigation repression. Pinching three fruit truss was higher than pinching two fruit truss in the occurrence rate of them. Soil moisture repression resulted in the reduction of fruit weight and in special, truss limited high density was distinctly decreased in -50kPa. The number of fruit was not affected by soil moisture control, but 3rd flower cluster was lower than 2nd flower cluster in the number of fruits and 2nd one was lower than 1st one. Under irrigation repression, rate of dry matter tended to grow in -30kPa, -50kPa compared with control and pinching three fruit truss was higher than two truss. Marketable yield dropped to 36.7%m 46.3 in -30kPa, -50kPa on pinching two fruit truss and dropped to 27.3%, 32.3% in 3rd flower cluster compared with control.