• Title/Summary/Keyword: Tomato yield

Search Result 234, Processing Time 0.022 seconds

Automatic Control of pH and EC by Programmable Logic Controller in Nutriculture of Tomato(Lycopersicon esculentum Mill.) (토마토의 양액재배시 Programmable Logic Controller에 의한 pH와 EC의 자동조절)

  • 김형준;김진한;남윤일
    • Journal of Bio-Environment Control
    • /
    • v.4 no.2
    • /
    • pp.203-210
    • /
    • 1995
  • Using the programmable logic controller (PLC), a kind of microcomputer, a facility to control EC and pH automatically in nutriculture of tomato was developed. A program for the automatic control of nutriculture was written in ladder diagram language. EC and pH levels of nutrition solution could be maintained at 1.70-1.72 and 6.1-6.5, respectively, during the entire growing period. Better fruits and higher yield were obtained in automatic control plot than in the control plot. Inorganic elements in plant were higher in the former than in the latter.

  • PDF

Effects of Soil Conditioners on the Growth of Cucumber and Tomato (오이 및 토마토 생육에 미치는 토양개량제 효과)

  • Park Sung Ok;Park Kuen Woo;Lee Gung Pyo;Kim Min-Jea;Lee Jeong Hun
    • Journal of Bio-Environment Control
    • /
    • v.13 no.4
    • /
    • pp.194-199
    • /
    • 2004
  • To investigate effect of soil conditioners on salt reducing effect, saline soil were treated with photomicrobe, soil plus, pyroligneous liquor and active charcoal and cucumber and tomato were grown. Yield and root development were enhanced in active charcoal treatment overall and tomato blossom end rot frequency was lowest in active charcoal treatment. Total sugar content was highest in soil plus treatment and nitrate and phosphate content were not significantly different within 4 treatments.

Effects of Organic Fertilizer and Several Plant Growth Regulators on Yield Components and Quality of Tomato under the Plastic Film House Condition (유기질비료 및 수종의 성장조절제처리가 토마토 수량 구성요소 및 품질에 미치는 영향)

  • Shim, J-S;Kim, Y-C
    • The Journal of Natural Sciences
    • /
    • v.4
    • /
    • pp.161-177
    • /
    • 1991
  • This experiment was carrid out to investigate the effect of organic fertilizer and plant growth regulators application on the growth and quality of tomato. The results are summarized as follows. 1. Plant height of tomato was recorded highest when chemical fertilizer plus organic fertilizer was applied, and did not have significant effects in number of leaf. But stem diameter was positively effected by chemical plus organic fertilizer application than chemical fertilizer alone. 2. Flower formation, flower weight, anther weight and ovary weight were generally increased by organic fertilizer application. 3. Fruit-set and number of flower were significantly increased by organic fertilizer application. 4. Deformity fruit was the lowest rate at chemical plus organic fertilizer application when it was 14.7 percent, and it was increased by chemical fertilizer application. 5. Days of ripening was slightly delayed by organic fertilizer application and also flowering date shortened by chemical fertilizer application. 6. Plant growth regulators had positive effects on number of flower, flower weight, anther weight, and ovary weight, and variations of their effect by cluster were apparent. 7. Fruit-set was increased by 2,4-D 10ppm and BA 20ppm treatments but was decreased by treatments of Ethephon 10ppm and control. 8. By the BA 20ppm and 2,4-D 10ppm treatments, the rate of deformity fruit was decreased and fruit ripening date was also shortened.

  • PDF

Effects of arbuscular mycorrhizal fungi on enhancing growth, fruit quality, and functional substances in tomato fruits (Lycopersicon esculentum Mill.)

  • Thanapat Suebrasri;Wasan Seemakram;Chanon Lapjit;Wiyada Mongkolthanaruk;Sophon Boonlue
    • Journal of Plant Biotechnology
    • /
    • v.50
    • /
    • pp.239-247
    • /
    • 2023
  • This study aimed to investigate the efficiency of arbuscular mycorrhizal fungi (AMF) in enhancing plant performance and bioactive compound concentrations in tomatoes (Lycopersicon esculentum Mill.). This factorial pot experiment included nine replications over 120 days of cultivation. Three AMF species (Rhizophagus prolifer, Claroideoglomus etunicatum, and Acaulospora mellea) were utilized as inoculum, while non-mycorrhizal controls with or without synthetic NPK fertilizer were compared. Interestingly, C. etunicatum KS-02 inoculations effectuated the best fruit growth and weight, which were statistically higher than those of the control without AMF. However, only fruit fresh weight was higher in plants inoculated with C. etunicatum KS-02 than those treated with the synthetic NPK fertilizer. In addition, C. etunicatum KS-02 inoculations induced a ≥ 11% increase in DDPH (1,1-diphenyl-2-picrylhydrazyl) activity, lycopene content, and carotenoid content compared to the control. This study is the first to report Claroideoglomus species' effectiveness in promoting growth, fruit yield, and bioactive compound production in L. esculentum Mill. These findings substantiate the significant potential of C. etunicatum KS-02 for tomato cultivation without the adverse effects of excessive synthetic fertilizer use.

Development of a Nutriculture System for Fruit Vegetables Using Perlite and Its Mixtures with Other Substrates II. Effects of Substrates on the Growth and Fruit Quality of Hydroponically Grown Tomato (Perlite 단용 및 혼용처리를 이용한 과채류 양액재배 기술 개발 II. 배지의 종류가 양액재배 토마토의 생장과 과실품질에 미치는 영향)

  • 정순주;서범석;이범선;이정현
    • Journal of Bio-Environment Control
    • /
    • v.5 no.1
    • /
    • pp.7-14
    • /
    • 1996
  • This experiment was carried out to investigate the growth and yield responses of hydroponically grown tomato as affected by the different substrates using perlite and mixtures with perlite. Substrates used in this experiment were perlite (fine and coarse granule), peatmoss, rice hull and carbonized rice hull. The results obtained were as follows ; The best results in terms of total fruit yield and average fruit weight obtained in the single treatment of perlite, followed by perlite mixture with rice hull and carbonized rice hull. Leaf area was also higher in the plots of perlite mixture and optimum mixing ratio of perlite, peatmoss and carbonized rice hull was determined as 5:3:2 by volume. The more the rice hull was added to the mixed substrates, the less in fruit production was observed. However, adding perlite to other substrates brought higher fruit yield. Single treatment of rice hull showed the lowest fruit yield but enhanced in soluble solids contents over 6.0 $^{\circ}$Brix at each cluster.

  • PDF

Effects of Diurnal Alternation of Nutrient Solution Salinity on Growth and Fruit Quality of Tomatoes Hydroponically Grown in NFT System (NFT 수경재배시스템에서 주/야 양액농도변환이 토마토의 생육 및 품질에 미치는 영향)

  • Kim Ki-Deog;Lee Eung-Ho;Lee Jae-Wook;Lee Byoung-Yil;Son Jung-Eek;Chun Chang-Hoo
    • Journal of Bio-Environment Control
    • /
    • v.15 no.1
    • /
    • pp.53-68
    • /
    • 2006
  • This experiment was conducted to investigate the effects of diurnal alternation of nutrient solution salinity on growth and fruit quality of tomatoes (Lycoperisicon esculentum cv. 'House momotaro') hydroponically grown in root intercept bag-NFT (RIB-NFT) system. Plant height was the lowest in the high concentration during daytime (6/1 $dS\;m^{-1}$, day/night). Yield was very high in the concentration of 1/1 $dS\;m^{-1}$, it decreased with increasing the concentration of nutrient Yield was higher at low concentration (4/1 $dS\;m^{-1}$) at nighttime compared to the same concentration (4/4 $dS m^{-1}$) at daytime and nighttime, and the reverse (1/4 $dS\;m^{-1}$) was similar to the control (perlite culture). Yield was greatly reduced by higher concentration at daytime than nighttime, and the decrease was alleviated by lower concentration at nighttime. With increasing the concentration of nutrient solution during daytime, sugar content of tomato fruit was increased, but yield was decreased. In the other experiment, tomato plants were hydropoically cultured in NFT system diurnally alternated between Aichi's solution and $Ca(NO_3)_2$ solution. $Ca(NO_3)_2$ solution was supplied for 4 hours from 10:00 to 14:00 at daytime and from 22:00 to 2:00 at nighttime, respectively, and Aichi's solution was supplied for the time except the 4 hours. Ca content of leaves and sugar content of fruit were increased by supplying $Ca(NO_3)_2$ solution at daytime compared to nighttime, but plant growth was greatly suppressed by supplying $Ca(NO_3)_2$ solution with the concentration of 4 $dS\;m^{-1}(4/4^{Ca}\;dS\;m^{-1})$ at nighttime.

Effects of Soil Moisture Control and Truss Limited High Density Culture on the Growth and Yield of Tomato(Lycopersicon esculentum Mill. cv. Momotaroyork) (토양수분조절과 저단밀식재배가 토마토의 생육 및 수량에 미치는 영향)

  • Kim, Gi-Don;Yoon, Wha-Mo
    • The Journal of Natural Sciences
    • /
    • v.14 no.2
    • /
    • pp.103-114
    • /
    • 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.

  • PDF

Reduction of Bacterial Wilt Diseases with Eggplant Rootstock EG203-Grafted Tomatoes in the Field Trials (가지대목 EG203을 이용한 토마토 풋마름병 경감효과)

  • Lee, Mun Haeng;Kim, Ji Kwang;Lee, Hee Kyoung;Kim, Keyng Jae;Yu, Seung Hun;Kim, Young Shik;Lee, Youn Su
    • Research in Plant Disease
    • /
    • v.19 no.2
    • /
    • pp.108-113
    • /
    • 2013
  • Wilt damage on tomato plants caused by Ralstonia solanacearum has been increased as the areas of tomato cultivation increased during the warm seasons. Also, the tomato rootstocks used to prevent the disease occurrence are not effective in the highly prevailing regions. Therefore, bacterial wilt resistant eggplant rootstock EG203, collected from AVRDC, was tested for its effect to deter the Ralstonia solanacearum wilt disease in the greenhouses at Buyeo Tomato Experiment Station from 2003 to 2005, and at Gumi, Kyungpook province from 2009-2011. Planting of eggplant rootstock EG203 should be done three weeks before the planting of tomato scions so that they can have similar stem diameter (2.5-3.0 mm) and can be easily grafted. Both insertion and inarching grafting showed 93-96% success rates. In the greenhouse tests at Buyeo Tomato Experiment Station from 2003 to 2005, eggplant rootstock EG203-grafted tomatoes showed the disease occurrence of 4.3%. On the other hand, non-grafted or other commercial rootstock-grafted tomatoes showed disease occurrence of 58.0% and 25.0-36.7%, respectively. In the greenhouse tests at Gumi, Kyungpook province in 2009, the disease occurrence on the EG203-grafted and non-grafted tomatoes was 2-5% and 20-80%, respectively. In 2010, at Gumi, Kyungpook province, when the wilt disease occurred slightly, the tomatoes grafted with tomato rootstocks B-blocking and Chung-gang, and eggplant rootstock EG203 showed similar disease severities, but EG203-grafted tomatoes formed lately cluster, resulting in the reduction of yield compared to tomato-grafted tomatoes. In 2011, at Gumi, Kyungpook province, when the wilt disease occurred severely, the tomato rootstocks 'B-blocking' and Chung-gang and eggplant rootstock EG203-grafted tomatoes showed disease occurrences of 60-85% and 0-1%, respectively. Therefore, it was concluded that tomato rootstocks 'B-blocking' and 'Chung-gang' are more useful in the areas contaminated with low levels of pathogen and eggplant rootstock EG203 is more useful in the areas contaminated with high levels of pathogen.

Effect of Greenhouse Cooling Method on the Growth and Yield of the Tomato cv. Momotaro in Warm Season (고온기 유리온실의 냉방방법이 토마토 생육 및 수량에 미치는 영향)

  • 이재한;박동금;권준국;엄영철;최영하
    • Journal of Bio-Environment Control
    • /
    • v.9 no.1
    • /
    • pp.60-64
    • /
    • 2000
  • This study was conducted to investigate effects of cooling methods on the growth and yield of tomato cv. momotaro in the glasshouse for four years from 1996 to 1999. Cooling methods were fan, fan and fogging, fan and shading(temp. control), fan and shading(radiation control), fan and shading (temp. control) with fogging. Fan, Fogging and Shading(temp. control) were operated automatically when air temperature was over 3$0^{\circ}C$. Amount of fogging was 500m1/min/100m$^2$and Droplets in a fog were 50 microns or smaller. Shading(radiation control) was operated automatically when solar radiation was over 500W/m$^2$. The growth and yield were the least in fan and shading(temp. control) method due to lack of light Intensity. Fogging method must be reconsidered for expensive equipment and maintenance expenses. As the matter stands, It is suggested to be the most considerable cooling method to increase ventilation rate with fan or use fan and shading(radiation control).

  • PDF

Effects of Spacing and Plug Cell Size on Seedling Quality and Yield and Qualities of Tomatoes (토마토 육묘시 공간처리 및 배지부피가 묘소질 및 과실의 수량 품질에 미치는 영향)

  • Kim, Sung Eun;Lee, Moon Haeng;Ahn, Beum Jun;Kim, Young Shik
    • Journal of Bio-Environment Control
    • /
    • v.22 no.3
    • /
    • pp.256-261
    • /
    • 2013
  • The spacing between plug cells and cell volume of each plug cell for nursing tomato seedlings were studied to know the effects on seedling growth and early yield. There were four treatments. The spacing of plug cells was done (OK) or not (NO) in case of cell spacing. The cell number in a plug tray was set to 40 or 50 in case of cell volume. The growth environment and irrigation regime were the same in all of the treatments during the experiment period. The photosynthetic rates, seedling qualities, yield and yield speed were significantly affected by both of the treatments. The photosynthetic rates and seedling qualities were the best in 40S-OK following by 50S-OK, 40S-NO, and 50S-NO while the yield was the best in 40S-OK following by 40S-NO, 50S-OK, 50S-NO. It means the spacing gives more impact than the cell volume in the stage of nursing but the cell volume gives more impact than the spacing after the stage of nursing. In the conclusion the spacing of plug cells in appropriate nursing stage is needed with the appropriate cell volume to make high quality of seedlings and high yield.