• Title/Summary/Keyword: pepper fruit

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A Study on the harmful trace elements in food (야채중에 함유된 유해 미량금속에 관한 연구)

  • 문인순;고영수;홍순영
    • Journal of Food Hygiene and Safety
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    • v.1 no.1
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    • pp.31-38
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    • 1986
  • In order to investigate the harmful trace elements in Korean common vegetable, the contents of Lead, Cadmium, Copper, Zinc and Manganese are studied in this paper. As shown in the Table 1, the following vegetable samples collected from the agriculture-marine products market I Seoul were used; root vegetables-potato, sweet potato, carrot, radish, onion and garlic, fruit vegetables-cucumber, pumpkin, green pepper, egg plant, tomato and melon. The contents of the harmful trace elements were determinded by means of atomic absorption spectrophotometry. These elements were extracted from the vegetables with the DDTC-MIBK extraction method. The results were as follows; 1. The average contents of the harmful trace elements in the vegetables were as follows; Root vegetables-Lead, 0.387 ppm; Cadmium, 0.030 ppm; Copper, 1.267 ppm; Zinc, 7.395 ppm; Manganese, 5.380 ppm. Fruit vegetables-Lead, 0.259 ppm; Cadmium, 0.028 ppm; Copper, 1.155 ppm; Zinc, 3.732 ppm; Manganese, 3.532 ppm. 2. The contents of harmful trace elements in vegetables were significantly low compared with foreign standards. This means that vegetables contamination with those harmful trace elements is not significant at present.

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Design and Evaluation of a Cinch Bag Typed Robotic Gripper for Fruit Harvesting (과수 수확을 위한 주머니 방식의 로봇 그리퍼 설계 및 검증)

  • Seongmo Choi;Myun Joong Hwang
    • The Journal of Korea Robotics Society
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    • v.18 no.1
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    • pp.99-109
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    • 2023
  • In this paper, the cinch bag typed fruit harvesting gripper was proposed. This gripper is focused on preventing problems that we found from the related research and setting the breakthrough as a design condition according to the harvest failures of other related studies. The cover part is designed to overcome the surrounding obstacles of target fruits such as tomato, Korean melon, and sweet pepper. The measurement of maximum load showed that the well-grasped target object, such as a spherical object with 65 mm of diameter, is unable to slip in a range of 0 kg to 10 kg. The fact that the gripper allows from 4 cm to 6 cm of positional error was shown in the measurement of positional error tolerance. And the cover part of this gripper showed that the suggested gripper can grab a target object without being obstructed by leaves and stems. Finally, it was proved that the gripper satisfied the design conditions through the measurement of contacting force, which showed it is appropriate for grasping an actual fruit without damage.

Residual Characteristics of a Systemic Insecticide Flonicamid and Its Metabolites in Sweet Pepper (착색단고추 중 침투성농약 플로니카미드 및 대사물질의 생성 및 잔류양상)

  • Seo, Eun-Kyung;Kim, Taek-Kyum;Hong, Su-Myeong;Kwon, Hye-Young;Gwon, Ji-Hyeong;Cho, Nam-Jun
    • The Korean Journal of Pesticide Science
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    • v.18 no.4
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    • pp.228-235
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    • 2014
  • The residue levels of flonicamid and its metabolites, 4-(trifluoromethyl)nicotinic acid (TFNA) and N-4-(trifluoromethyl)nicotinoyl glycine (TFNG) in sweer pepper were investigated to examine the residual characteristics of analytes for 87 days after pesticide application. The pesticide was applied once at recommended dosage and double dosage by foliar sprays and the samples of fruits and leaves of sweet pepper were collected for each treatment. The residues of flonicamid in all of fruits and leaves decreased gradually over time, while the residue levels of TFNG metabolite exhibited tendency that increased for long periods and thereafter decreased. Total flonicamid residual concentrations containing metabolites residues in fruit samples increased consistently until 30 days post-application and higher residue levels than residues at 1 day post-application were detected from 30 day to 87 day after treatment. The residue pattern observed in fruit could be explained by the movement of TFNG from leaves to fruits of plant. Such residual characteristic was similarly found in samples treated both recommended dosage and double dosage.

Effects of Green Manure Crops, Hairy vetch and Rye, on N Supply, Redpepper Growth and Yields (질소공급, 고추의 생육 및 수량에 대한 녹비작물 환원 효과)

  • Sung, Jwa-Kyung;Lee, Sang-Min;Jung, Jung-Ah;Kim, Jong-Mun;Lee, Yong-Hwan;Choi, Du-Hoi;Kim, Tae Wan;Song, Beom-Heon
    • Korean Journal of Soil Science and Fertilizer
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    • v.41 no.4
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    • pp.247-253
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    • 2008
  • Winter annual green manure crops may be an effective tool for environmental-friendly agriculture system. The effect of legume (hairy vetch), non-legume (rye) and N fertilization ($190kg\;N\;ha^{-1}$) was examined and compared on red-pepper yield, nitrogen uptake, carbohydrate composition, and soil N and C contents. We monitored soil N and C for 120 days after incorporation (DAI) of green manures or mineral fertilizer. The mineralization of nitrogen reached the maximum around 30 DAI. The amount of inorganic nitrogen supplied by mineralization of hairy vetch residue was greater with than chemical N or rye. Photosynthetic rate was similar by 70 DAT in all treatments however, it in rye-incorporated red-pepper presented a sharp decline at later growth period. Leaf total nitrogen was greater with hairy vetch and chemical N than rye throughout the experiment. The soluble sugar increased steadily in all treatments from 40 to 110 days after transplanting (DAT) whereas starch showed a tendency of great decrease. Hairy vetch greatly promoted red-pepper growth by the later period however, chemical N showed the highest fruit yields.

Growth of Green Pepper (Capsicum annuum L.) in Greenhouse Covered with Light Diffusion Film (산광필름피복 시설 내 풋고추 생육)

  • Hee Chun;Jin Young Kim;Hyun Hwan Kim;Si Young Lee;Yooun Il Nam;Kyung Je Kim
    • Journal of Bio-Environment Control
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    • v.10 no.3
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    • pp.181-186
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    • 2001
  • During the growth of fruit vegetables such as pepper, cucumber and tomato, there are light deficiency under the plant canopy. This study was conducted to clarify the effect of light diffusion film on the stem growth, canopy, flowering and fruiting of green pepper in greenhouse. The transmittance of total solar radiation into greenhouse under woven and double films were 90% and 75% of polyethylene film. And the transmittance of photosynthetically active radiation into greenhouse under woven and double films were 96% and 81% of polyethylene film. However, the light diffusions under woven, double and polyethylene films were 46%, 31% and 9%, respectively. The plant height under polyethylene film covered greenhouse was 96.9% cm, taller than those under woven and double films by 6.5, 13.9 cm. And the third node length under woven film covered greenhouse was 8.6 cm, shorter than those under double and polyethylene films by 2.5, 5.7 cm. Also the first branch angle under woven film covered greenhouse was 61.0$^{\circ}$, larger than those under double and polyethylene films by 2.3, 10.3$^{\circ}$. But there was no clear difference in the node numbers among the covering materials. The rate of curved and sterile fruit under woven film covered greenhouse was smaller than those under double and polyethylene films by 4.6, 5.5% and 1.2, 3.6%. But the contents of vitamin C showed no difference among the covering materials and plant densities.

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Effects of Some Environment-friendly Farming Materials on Growth of Pepper and Tomato Seedlings under Low Solar Radiation Conditions (저일조 조건에서 몇 가지 친환경농자재가 고추와 토마토의 유묘 생육에 미치는 영향)

  • Um, Yeong-Cheol;Seo, Tae-Cheol;Jang, Yoon-Ah;Lee, Sang-Gyu;Lee, Jun-Gu;Choi, Chang-Sun;Oh, Sang-Seok
    • Journal of Bio-Environment Control
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    • v.20 no.4
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    • pp.269-276
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    • 2011
  • The aim of this study was to evaluate the effect of 3 environment- friendly farming materials on the growth of pepper and tomato seedlings under low level of solar radiation. The pepper and tomato seedlings were separately grown on commercial substrate and non-fertilizer substrate under 30% shading condition, respectively. The microbe-, enzyme-, and amino acid-supplements were used for the foliar application to the seedlings. The application of enzyme- and amino acid-supplements significantly enhanced the growth of tomato and pepper seedlings grown on non-fertilizer substrate, while there was no significant effect on the seedlings grown on commercial substrate. The foliar application of enzyme- and amino acid-supplements reduced the days to flowering by 3 to 4 days and lowered the node order of fruit set in tomato plants grown on non-fertilizer substrate. The results showed that the enzyme- and amino acid-supplements could enhance the seedling growth and lower the node order of fruit set under limited nutritional conditions.

Effect of Temperature and Nutrition Affecting Oospore Formation of Phytophthora capsici Causing Red Pepper Fruit Rot (고추 역병균(疫病菌) (Phytophthora capsici)의 난포자(卵胞子) 형성(形成)에 미치는 온도(溫度) 및 영양(營養)의 효과(效果))

  • Chung, Bong-Koo;Kang, Me-Jong
    • The Korean Journal of Mycology
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    • v.18 no.4
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    • pp.203-208
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    • 1990
  • Sexual reproductive structure of Phytophthora capsici in vitro was round shape with thick wall and $24.4\;{\mu}m$ of diameter ranging $20-32.5\;{\mu}m$. Oogonium was $26.7\;{\mu}m$ $(21-37.5\;{\mu}m$) and $6.5-{\times}5.4m$ $(6-8{\times}5-6{\mu}m)$ for antheridium as doughnut shaped. Since mycelial contact of the paired cultures initiated right after inoculation, mycelial expansion phase was followed. Oospore morphogensis could be divided into the four phases for reproducing adult oospores. The optimum temperature for oospore reproduction was $20-24^{\circ}C$, whereas a retard trend for oospore formation was at the temperature above $25^{\circ}C$. Korean squash agar medium showed a higher oospore formation than the existing V-8 agar medium. Red pepper fruit agar medium was next. No oospore was reproduced on the red pepper leaf medium. Diurnal light with $1800{\pm}300$ and $800{\pm}300$ Lux showed rather retardation for oospore formation than dark conditions.

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Effects of Rain-shelter Types on Growth and Fruit Quality of Red Pepper (Capsicum annuum L. var. 'Keummaru') Cultivation in Paddy (고추 논재배 시 비가림형태가 생육 및 과실 품질에 미치는 영향)

  • Lee, Guang-Jae;Song, Myung-Gyu;Kim, Si-Dong;Nam, Sang-Young;Heo, Jeong-Wook;Yoon, Jung-Beom;Kim, Dong-Eok
    • Horticultural Science & Technology
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    • v.34 no.3
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    • pp.355-362
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    • 2016
  • This study was carried out to investigate the effects of rain-shelter types on growth, and fruit quality of red pepper (Capsicum annuum, 'Kemmaru') cultured in paddy. Applied rain-shelter types were outfield (control), simple rain-shelter plastic house with 2 rows (2R), simple rain-shelter plastic house with 4 rows (4R), and perfect plastic house (House). The plant height was the highest in Houses treatment. There was no difference in leaf length and width among the rain-shelter treatments. The fresh and dry weight of red pepper was high in order of House > 4R > 2R > Control. The ASTA value is irregular tendency among the treatments. Hunter's color value 'a' and 'b' was not different from among the treatments. Phytophthora blight, powdery mildew, bacterial spot were not occurred in all of treatments, and Anthracnose was only occurred in control. Mite, Microcephalothrips abdominalis, and Bemisia tabaci were not occurred in all of treatments, and aphid, Helicoverpa assulta, and virus were occurred all of treatments as same degree. Our results will provide rain-shelter cultivation of red pepper can be increase dry yield and decrease disease and insects.

Effects of Fertigation of Piggery Waste Water on the Growth, the Yield of Red Pepper and the Chemical Properties of Soil under Protected Cultivation (시설재배토양에서 돈분뇨정화처리수 관비가 고추의 생육, 수량 및 토양화학성에 미치는 영향)

  • Kim, Ki-Deog;Lee, Byoung-Yil;Park, Chang-Kyu;Won, Sun-Nee;Yoo, Chang-Jae
    • Korean Journal of Organic Agriculture
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    • v.7 no.2
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    • pp.115-124
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    • 1999
  • This study was conducted to investigate the effects of fertigation level such as 50%, 75% and 100% N of standard amount of chemical fertilizer,m and fertigation interval such as every irrigation, intervals of 1 and 2 weeks of piggery waste water(PWW) on the growth, yield of red pepper plant and the chemical properties of soil used. In early stage, growth of red pepper plant fertigated with PWW and that of red pepper plant applicated standard chemical fertilezer was the same, while it were increased as increasing application amounts of PWW, and later growth and total yield of red pepper plant were much more at 75% N fertigation of PWW. Inorganic content such as nitrogen, phosphate and potassium and chlorophyll content of red pepper leaves were increased as increasing fergigation amount of PWW. 50% fertigation level showed the lowest rate of fruit setting of red peper plant. For soil chemical properties, pH was slightly decreased, but available $P_2O_5$, and exchangeable K content were increased as increasing fertigation amount of PWW. Because there was not statistically significant difference in the growth, the yield of red pepper and chemical properties of soil used according to various fertigation intervals, and no need to artificially supply PWW, therefore fertigation by simple automatic system with tensiometer was thought to be better.

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