• Journal of Bio-Environment Control
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• v.27 no.4
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• pp.424-430
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• 2018

This study was carried out to estimate growth characteristics of hot pepper and to develop predicted models for the production yield based on the growth parameters and climatic elements. Sigmoid regressions for the prediction of growth parameters in terms of fresh and dry weight, plant height, and leaf area were designed with growing degree days (GDD). The biomass and leaf expansion of hot pepper plants were rapidly increased when 1,000 and 941 GDD. The relative growth rate (RGR) of hot pepper based on dry weight was formulated by Gaussian's equation RGR $(dry\;weight)=0.0562+0.0004{\times}DAT-0.00000557{\times}DAT^2$ and the yields of fresh and dry hot pepper at the 112 days after transplanting were estimated 1,387 and 291 kg/10a, respectively. Results indicated that the growth and yield of hot pepper were predicted by potential growth model under plastic tunnel cultivation. Thus, those models need to calibration and validation to estimate the efficacy of prediction yield in hot pepper using supplement a predicting model, which was based on the parameters and climatic elements.

• Life and Agrochemicals
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• s.283
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• pp.45-47
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• 2012

파프리카(Paprika)는 착색단고추로 1995년부터 본격적으로 재배, 수출용으로 소비되었으나 최근에는 피자, 샐러드용으로 국내소비도 많아지고 있다. 재배양식은 여름형과 겨울형이 있다. 여름재배는 3월 중순경 정식, 6월 중순부터 12월까지 수확한다. 겨울재배는 9월 초순정식, 12월 초부터 7월까지 수확하여 연중 재배되고 있다. 시설 내 파프리카 생육적온은 주간 $21-27^{\circ}C$, 야간 $18-19^{\circ}C$이며 습도는 70-80%로서 시설내 발생하는 미소해충들이 번성하기에 좋은 조건이다. 해충 방제는 피해를 정확히 진단하고 발생초기에 적절한 방제수단을 강구하여야 피해를 최소화 할 수 있다. 따라서 재배유형별로 작기 전 기간에 걸쳐 종합적인 해충관리대책이 수립되어야 하며, 어린모 구입시 건전묘 구입, 해충 수시 예찰과 조기방제, 작기 후 포장위생을 철저히 하여야 한다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2003.07a
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• pp.440-446
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• 2003

농산물의 품질 향상과 생산성 증대를 위해 농약의 적절한 사용이 필요하다. 그러나 농약을 적절히 사용해도 수확 농산물의 표면이나 내부에는 농약이 잔류할 가능성이 항상 있다. 농약의 과다한 잔류는 국민 보건상 커다란 문제가 될 수 있으므로 농약의 잔류량을 신속히 측정할 수 있는 분석법이 절실히 요구되고 있다(박, 2003). 살충제 Imidacloprid는 유기인계 살충제로 해충에 전신마비, 이완, 활동성 저하 등을 일으켜 박멸한다. 국내에서는 귤굴나방, 조팝나무 진딧물, 벼멸구, 굼벵이 류 등의 방제를 위해 감귤, 사과, 고추, 배, 장미, 복숭아 및 벼농사에 광범위하게 사용되고 있다(Bayer CropScience-Korea, 2002). (중략)

• Proceedings of the Korean Society of Crop Science Conference
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• 2021.04a
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• pp.80-80
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• 2021

• KOREAN JOURNAL OF CROP SCIENCE
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• v.42 no.1
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• pp.56-60
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• 1997

In order to investigate the relationships between the responses of four crops (rice, soybeans, potatoes, and red pepper) to acid rain, the simulated acid rain(SAR) of pH 1.8, 2.3, and 2.8 and normal rain of pH 6.0 were applied from 30 days after emergence to harvest at the two-week interval for rice, soybeans and red pepper and at a week interval for potatoes. SAR of pH 1.8 and 2.3 caused brown spots in the leaves of rice, soybeans, and red pepper and the damages were severer as the pH of SAR lowered, while no visual damages were observed in potatoes. The SARs did not affect chlorophyll content of rice and potatoes, while chlorophyll content of soybeans and red pepper decreased as the pH of SAR lowered. Photosynthetic activity was not significantly different among the pHs of SAR in rice, while decreased as pHs of SAR lowered from pH 2.8 to 1.8 in soybeans, potatoes, and red pepper. Yield of rice, soybeans, and potatoes was not affected by the pHs of SAR, but in red pepper the length, diameter, and weight of a fruit, the number of fruits per plant, and total matured fruit yield decreased as the pHs of SAR lowered. In rice and potatoes visual damages caused by SAR did not correlated with other observed traits. However, visual damages were negatively correlated with chlorophyll content and photosynthetic activity of soybeans and photosynthetic activity and yield of red pepper.

• The Korean Journal of Mycology
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• v.43 no.4
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• pp.253-259
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• 2015

Anthracnose caused by Collectotrichum acutatum is the most devastating disease of pepper plants in Korea. In this study, we evaluated the effect of selected antagonistic bacteria on control of anthracnose and plant growth promotion of pepper plants under field conditions. Four different bacterial isolates used in the current study were isolated from the pepper rhizosphere (GJ01, GJ11) and tidal flat (LB01, LB14) in previous studies. Four bacterial isolates, together with a control strain (EXTN-1), showed antifungal activity against C. acutatum in a dual culture assay. To test for plant growth promotion effect, seedling vigor index and growth parameters of pepper were measured under field condition. As a result, all four bacterial isolates were effective for improving plant growth promotion. The strain GJ01 was the most effective in improving the seedling vigor on pepper, but the strain GJ11 in increasing the pepper fruit yield. The incidence of anthracnose was inhibited in the range of 63.2~72.5% by treatment of four bacterial isolates. The current study indicated that the four bacterial isolates could be used as potential biological control agents of anthracnose disease of pepper.

• Journal of Bio-Environment Control
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• v.9 no.3
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• pp.146-150
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• 2000

This study was conducted to investigate the effect of seedling age on quality and yield in bag culture of sweet pepper. Seedlings of 20, 30, 40, 50, and 60 days old were compared. 60 days old seedlings grew faster than 30 or 40 days old seedlings. Mean days to bloom after sowing was fastest as 48 days in 30 days old seedling, followed by 20 days old seedlings. Rot activity was higher in 20 or 30 days old seedlings. Number and length of first lateral roots with thickness of 1.5mm or less, reached to 106.5 and 1.085 cm, respectively in 30 days old seedlings. Root weight, root length, and number of primary lateral roots were the greatest in 30 days old seedling. Greater early yield a obtained in 50 and 60 days old seedling, while late yield was grater in 30 or 40 days old seedlings.

• Journal of Biosystems Engineering
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• v.35 no.6
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• pp.367-372
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• 2010

Consumption of pepper, a major spice vegetable used for seasoning Kimchi, continues to increase, but cultivation is in decline due to shortage of rural labor in Korea. The 39.2% of total labor requirement for conventional pepper cultivation was available for harvesting work. Therefore conventional manual harvesting should be turned to mechanical harvesting for labor-saving, cost-reducing and easy work. Surveys on conventional pepper cultivation patterns, labor requirements for various pepper cultivation works, and farmers' opinions on the mechanization of pepper harvesting were conducted to obtain basic informations. The labor requirement for pepper harvesting was 954 h/ha out of a total labor requirement of 2,436 h/ha for pepper cultivation. Harvesting was the hardest work, and hiring workmen for harvesting was also difficult. Farmers preferred to develop a small-scale pepper harvester using agricultural tractor or cultivar. Most farmer agreed to change cultivation pattern for mechanization of pepper harvesting, but hesitated to adopt new one-time-harvesting pepper varieties.

• Horticultural Science & Technology
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• v.33 no.6
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• pp.839-844
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• 2015

This study was carried out to investigate seedling quality, growth characteristics and yield of hot pepper (Capsicum annum) grown in the open field according to seedling growth periods (SGPs) of 45, 55, 65, 75, and 85 days. Before planting, plant height, node number, leaf area, fresh and dry weight of seedlings were high in longer-SGP treatments, the T/R ratio was high in SGP 45 and SGP 85 treatments compared with other treatments. At 10 weeks after planting, plant height, stem diameter and leaf area of plants treated with SGP 45 and SGP 55 were significantly higher compared to other treatments. Fresh and dry weight of the plant with SGP 45 treatment was greatest, however, the dry matter percentage with SGP 45 was low compared to other treatments. Fruiting number and weight per plant were highest in SGP 45 treatment. Shorter SGP treatments such as 45 and 55 days gave greatly increased total weight of ripened fruit at 18 weeks after planting. Our results showed that SGP for hot pepper grown in the open field influences plant growth parameters and marketable yield, so that SGP 45 to SGP 55 is optimum to cultivate hot pepper plant.

• Korean Journal of Soil Science and Fertilizer
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• v.43 no.4
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• pp.506-513
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• 2010

Plant growth promoting ability of Methylobacterium oryzae CBMB20 was evaluated under different levels of organic fertilizer application on red pepper plants in a pot experiment. Oil cake as an organic N fertilizer was applied at the rates of 70, 85, 100 and 120% of the conventional recommended level. Each treatment was further treated with or without M. oryzae CBMB20 inoculation. The recommended amount of compost for red pepper was added in all the treatments. Results revealed that plant height, dry biomass and fruit yield were enhanced in increasing order as the rate of fertilization increased. Overall plant growth was improved due to the inoculation of M. oryzae CBMB20 and red pepper fruit yield was also increased by 10-35% in the plants inoculated with M. oryzae CBMB20 at different rates of organic fert1izer application. Total methylotrophic bacterial population in rhizosphere soil measured at the time of harvest was significantly higher in M. oryzae CBMB20 inoculated treatments. The growth promoting effect of M. oryzae CBMB20 found in red pepper could be due to the effective colonization of the bacteria in the rhizosphere and its ability of enhancing nutrient availability and producing plant growth hormones. With the plant growth promoting effect of M. oryzae CBMB20, the rate of organic fertilizer application can be reduced without any significant decreases in biomass production and yield of red pepper.