• Title/Summary/Keyword: soil culture

Search Result 40, Processing Time 0.088 seconds

Effect of Root Zone Restriction on Yield and Quality of Muskmelon (멜론의 수량과 품질에 미치는 근권제한의 효과)

  • 권준국;이재한;엄영철;최영하;강광윤;박동금
    • Journal of Bio-Environment Control
    • /
    • v.8 no.1
    • /
    • pp.36-41
    • /
    • 1999
  • This study was carried out to investigate the effect of root zone restriction on yield and quality of muskmelon. Three cultivation methods, isolated bench, root zone restriction sheet(RZR sheet) and conventional soil culture, were compared from April 19th to July 17th. Soil temperature was higher at isolated bench and the growth of melon was accelerated at isolated bench compared to soil culture or RZR sheet. Fruit size was bigger in order of soil culture, isolated bench and RZR sheet, while sugar content and net shape were greatest at isolated bench, and the percentage of wilted plant was 3.3% at isolated bench, 25.0% at RZR sheet and 26.7% at soil culture. Therefore, marketable yield was higher at isolated bench compared to conventional soil culture.

  • PDF

Diseases Occurrence rind Fermented Fruit Development by Culture Methods and Rootstocks of Oriental Melon(Cucumis mezo L.) (참외 재배법 및 대목 종류에 따른 병해 및 발효과 발생)

  • 연일권;신용습;배수곤;도한우;박종욱;박소득
    • Journal of Bio-Environment Control
    • /
    • v.11 no.1
    • /
    • pp.18-22
    • /
    • 2002
  • Diseases occurrence of hydroponic culture was less than that of soil culture, especially gummy stem blight, which was 39.9-53.3% of infection rate at soil culture, was not almost observed at hydroponic culture. Development of fermented fruit was higher at Shintozoa, Hongtozoa and self-rooting seedling in order at soil cultured but critically dropped at hydroponic culture without rootstock sort. Therefore proper moisture management at root zone can decrease the development of fermented fruit.

Studies on Simple Hydroponic Culture in Cultivation of Grafted Cactus for Export (수출용 접목선인장 재배시 간이양액재배 연구)

  • Lee, Joung Won;Oh, Hoon Geun;Kim, Ju Hyoung;Lee, Ki Yeol;Lee, Jung Soo
    • Korean Journal of Plant Resources
    • /
    • v.28 no.4
    • /
    • pp.546-549
    • /
    • 2015
  • This study was carried out to investigate the effect of simple hydroponic culture in cultivation of grafted cactus. The results obtained are as follows: Growth indexes of grafted cactus cultivars, such as scion diameter, fresh weight, and scion hardness were improved in simple hydroponic culture compared with soil culture regardless of cultivars. Stem rot and rate of non-graft take were lower in simple hydroponic culture than in soil culture, but no significant difference was monitored between cultivars. Time for harvesting was fast in simple hydroponic culture compared with soil culture. Marketable yield increased in simple hydroponic culture.

Evapotranspirations of Lettuce and Cucumber by Cropping Systems in Greenhouse (시설재배 상추 및 오이의 재배방식별 증발산량)

  • 남상운;이남호;전우정;황한철;홍성구;허연정
    • Journal of Bio-Environment Control
    • /
    • v.6 no.3
    • /
    • pp.168-175
    • /
    • 1997
  • In greenhouse, data on evapotranspiration or water consumption is important for the rational water management, irrigation planning, thermal environment analysis, and watering automation. But little investigations have been attempted to make clear the characteristics of water consumption in greenhouse. In this paper, evapotransplrations of lettuce and cucumber by cropping systems were investigated. And the correlations among evapotranspiration, pan evaporation, solar radiation, mean air temperature, and minimum relative humidity were analyzed. Experimental cropping systems of lettuce were soil culture and NFT system. Those of cucumber were soil culture, perlite culture, and rockwool culture. Total water consumption of lettuce was 2.62$\ell$/plant in soil culture and 1.71$\ell$/plant in NFT system. That of cucumber was 45.22$\ell$/plant in soil culture, 27.45$\ell$/plant in rockwool culture and 29.06$\ell$/plant in perlite culture. Therefore total water consumption of soil culture showed higher than soilless culture.

  • PDF

Studies on the Precipitation of Lead Ion and the Inhibition of Plant Growth (연(Pb) 이온의 침전과 식물생장의 억제에 관한 연구)

  • 성민웅
    • Journal of Plant Biology
    • /
    • v.19 no.1
    • /
    • pp.1-6
    • /
    • 1976
  • This study was carried out to investigate the formation of precipitates between lead ion and the essential anions of plants, the effects of lead concentration on seed germination and plant growth in water and soil culture, and the germinating and growing recovery of inhibited seed germination and plant growth by lead. Four kinds of the seeds (Glycine max M., Triticum vulgare V., Setaria viridis (L) P. De Beauvois, and Digitoria sanguinalis (L) Scopoli var) were germinated and growth in water and soil culture included the different concentrations of lead for five days. The seeds and plants inhibited germination and growth by lead were transferred to lead free Hoagland solution and the growing recovery was observed. The precipitates of lead ion were observed in the solution of both acidity and alkalinity included each anion of $H_2PO_4^-, HPO_4^{2-}, PO_4^{3-}, SO_4^{2-} and MoO_4^{2-}$ in a room temperature, whereas the precipitates between lead ion and other anions were observed largely in the solution of alkalinity, so that it seemed that lead could be remained in the state of non-soluble in plant and soil. The inhibition of germination and growth in the water culture was observed in 100ppm of lead, whereas the inhibition in the case of the soil culture was observed in 10000ppm of lead. The difference of the effected concentration between water and soil culture in germination and the growth was 100 times. When the seed and plant inhibited the growth in 5000ppm or 10000ppm of lead for five days were transferred to lead free Hoagland solution, the recovery of germination and growth was observed in three days. This growing recovery was different according to the kinds of plant and concentrations of lead. It seemed that plant growth could be inhibited by the inhibition of the metabolism concerned with the precipitates between lead iion and other anions.

  • PDF

Effects of Boron Applications on Flower Spike Dieback of Statice (Limonium spp.)

  • Choi, Chang-Hak;Jeong, Dong-Chun;Lee, Jin-Jae;Song, Young-Ju;Ahn, Byung-Koo;Lee, Jin-Ho
    • Korean Journal of Soil Science and Fertilizer
    • /
    • v.46 no.3
    • /
    • pp.209-215
    • /
    • 2013
  • This study was conducted to investigate the effects of boron treatments on flower spike dieback of Statice (Limonium spp.) grown in soilless hydroponic and soil cultures under rain shelter system. The growth of Statice was gradually improved with increasing boron applications in the hydroponics, but not in soil culture with boron treatment as foliar spray or soil application. The degree of flower spike dieback in 6 levels (0, no dieback incidence to 5, very severe dieback incidence) ranged between 0.5 with boron application and 4.4 with no boron treatment. The content of boron in Statice flower spike increased with increasing rates of boron applications in the hydroponics, but the contents of P, Mg, and N were not affected by the boron application. However, K content was highest with no boron treatment. In soil culture, incidence of flower spike dieback decreased with foliar spray or soil application of boron. Therefore, boron application was effective in reducing flower spike dieback and improving cut-flower productivity and its quality, and the recommended rates of boron application were $50{\sim}80{\mu}gL^{-1}$ for hydroponics culture whereas 0.2% borex or ${\geq}0.4kg\;10a^{-1}$ boric acid by foliar spray application for soil culture.

The Effect of IAA on $Colocasia$ $esculenta$'s Growth and Morphogenesis (IAA가 토란의 생장 및 형태 발생에 미치는 영향)

  • Kim, Young-Eun;Lee, Joon-Sang
    • Korean Journal of Environmental Biology
    • /
    • v.29 no.2
    • /
    • pp.92-97
    • /
    • 2011
  • Morphological and physiological differences of $Colocasia$ $esculenta$ were investigated in the cultivation of hydorphonic and soil culture. $C.$ $esculenta$ grown in Hoa.+IAA (indole-acetic acid) showed higher growth activity representing 9%, 32%, 38% and 60% than those of the cultivation of vermiculate, Hoagland solution, soil and water, respectively. In case of $F_v/F_m$ ratio experiments, the value $F_v/F_m$ of $C.$ $esculenta$ cultivated in the water showed 0.55 after 6 weeks. $F_v/F_m$ values of $C.$ $esculenta$ cultivated in Hoagland+IAA, vermiculate and soil were between 0.84 and 0.80 indicating $F_v/F_m$ values were about 45% higher than that of $C.$ $esculenta$ cultivated in the water. Diffusion resistance was 45~35% lower in $C.$ $esculenta$ grown in Hoa.+IAA solution than that of $C.$ $esculenta$ grown in water only after 5 and 6 weeks. Therefore, the high standing levels of the growth rate, fluorescence activity and transpiration rate were Hoa.+IAA, vermiculate, Hoagland, soil and water. The distinct morphological differences of $C.$ $esculenta$ cultivated in hydorphonic and soil culture were the appearance of the seed corm and root hair. The development of seed corm was well established in soil culture but the corm in hydorphonic was slowly hydrolyzed and then disappeared. The fibrous root systems of hydorphonic were very well distinguishable compared with that in soil culture. Outstanding results of this experiment were appeared in $C.$ $esculenta$ which was cultivated in the field provided with enough mineral nutrition, organic fertilizers and compound fertilizers. The most height taros were almost 2m and the numbers of seed corm were 30~40 after 7 months.

Studies on the effects of radiation from radioisotopes incorporated in plant (IV) -The effects of P-32 application on the growth of buckwheat- (작물에 흡수된 방사성 동위원소의 내부 조사 효과에 관한 연구 (IV) -교맥 생장에 미치는 P-32 시용의 잔유 효과-)

  • 김길환
    • Journal of Plant Biology
    • /
    • v.11 no.1
    • /
    • pp.7-14
    • /
    • 1968
  • Buckwheat seeds produced in previous year (1965) in an experimental pot culture in which nine levels of P-32 ranging from $1.4{\times}10-4 to 3.3{\times}104$\mu$c/pot(as of 27 July 1965)$, with the same specific activity, had been applied to the corresponding pots respectively, were used this year(1996) in water and soil culture as well as in germination test to investigate the feature and extent of possible residual effects of P-32 incorporated upon germination and plant growth, and the following results were obtained: 1. Under the given experimental conditions both stimulative and inhibitory effects of radiation were observed. 2. The germination rate of the seeds was lower at the higher level of P-32 aplication ranging from $3.0{\times}103 to 3.3{\times}104$\mu$c/pot$ and higher at 0.2 $\mu$c P/pot than the control. 3. Among the seeds produced at the higher level of application about 80% was failed to germinate, owing to the radiation injury. The remaining 80% was failed to germinate, owing to the radiation injury. The remaining 80% survived the damaging effect and showed vigorous growth and increased yield. The latter group of seeds thus proved themselves to be more radioresistant than the former. 4. The survived seeds produced later more straw and root on dry weight basis. The higher the level of P-32 applied, the stronger the stimulative effect showed in vegetative growth. 5. No radiation effect on linear growth of the plants was observed in the soil culture. 6. The dry weight of straw produced showed little difference at the moderate range compared with that of control in the soil culture. At high level of application, i.e. over $\mu$c P32/pot, however, the production was increased by 12-37% of control. 7. As for the dry weight of root harvested, the P-32 treatment over 24$\mu$c P32/pot produced 82-155% more than the control, whereas little difference was observed under 2.2$\mu$c P32/pot. 8. The seed production increased in general by the P-32 treatments. Particularly at the moderate level of application the rate of increase amounted to 70% of the control. 9. Those individual plants which survived damaging effects of radiation at the germinating stage shwoed remarkable stimulative effects both in vegetative and in reproductive stage of growth.

  • PDF

Effects of Water Stress on Nitrate Reductase Activity and Abscisic Acid Content in Soybean Plants (수분부족이 콩의 질산환원효소 활성과 Abscisic acid 함량에 미치는 영향)

  • Ryu, Jeom-Ho;Doo, Hong-Soo;Ko, Gyong-Nam;Choo, Byong-Gil;Lee, Kang-Soo
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.39 no.3
    • /
    • pp.223-231
    • /
    • 1994
  • To investigate effects of water stress on leaf water potential, nitrate reductase activity and abscisic acid content, Paldalkong, Saealkong and Danyeobkong were subjected to water stress by polyethyene glycol(PEG, MW=6,000) in the water culture and withholding irrigation in soil culture. Leaf water potential and nitrate reductase activity decreased with increaseing of PEG concentration in the water culture. These were higher at 3rd and 5th leaf stage than at 1st leaf stage. Leaf water potential showed no significant differance among the varieties, but nitrate redutase activity was higher in Paldalkong than in Saealkong and Danyeobkong. Leaf water potential and nitrate reductase activity decreased approximately 2.2 times (-1.67 MPa/-0.75MPa) and 47%(3.1${\mu}$ mole nitrite/g.DW/hour/15.9${\mu}$ mole nitrite/g.DW/hour) to control, respectively, after 3 days from water stress treatment in the soil culture. According to increasing PEG concentration, abscisic acid content increased in the water culture and was higher at 5th leaf stage than at 1st and 3rd leaf stage. Paldalkong showed the highest abscisic acid content. Abscisic acid content increased approximately 1.7 times (9.9nmole/g.DW/5.7nmole/g.DW) compared to the control after 3 days from water stress treatment in the soil culture.

  • PDF

Effects of Fertigation Method on the Growth of Cucumber Plants in Soil Culture (상이한 급액방법이 토양양액재배 오이의 생육에 미치는 영향)

  • 이정필;김홍기;임종극;서범석;정순주
    • Proceedings of the Korean Society for Bio-Environment Control Conference
    • /
    • /
    • pp.149-152
    • /
    • 1999
  • 최근 들어 시설재배는 토양재배에서 관비재배, 관비재배에서 양액재배방식으로 전환하려는 농가가 급속히 늘고 있어 시대가 변천하면서 더욱 생력적이고 효율적인 농업방식으로 발전하고 있다. 이는 시설의 구조나 형태가 작물생육에 적합한 환경을 제공하기 위하여 지속적으로 개선되어 왔고, 또한 토양재배시 초래되는 연작장해를 회피하기 위한 농가의 요구가 반영된 결과이다. (중략)

  • PDF