• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.11a
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• pp.227-232
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• 2002

냉온처리전, 후 ABA의 토양 및 엽면처리는 오이묘의 생존율을 유의하게 증가시켰고 세포의 전해질 누출량도 현저하게 감소시켰으며, 수량의 감소를 경감시켰다. 또한 ABA 처리는 냉온처리후보다는 냉온처리전에, 엽면처리보다는 토양에 처리하는 것이 보다 효과적이었다. 요소(0.2%)와 KH$_2$PO$_4$의 엽면살포는 오이의 생장과 수량에 미치는 냉온피해를 경감시켰다.

• Journal of Bio-Environment Control
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• v.16 no.3
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• pp.194-198
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• 2007

This study was performed to determine the optimum concentration of potassium for the foliar application, and its application stage to increase the production of marketable sized tomato. For this purpose, 0.25, 0.5 and 1.0 percent of potassium phosphate $(KH_2PO_4)$ were applied in the leaves of tomatoes by the stage of flowering, fruit setting and fruit development. The control plants were applied with distilled water. The results showed that foliar application with 0.5 percent of potassium phosphate increased the proportion of medium sized fruit of the products by 29.5 percent compared to the controlled plants, which is highest in the treatments. The foliar application of 0.5 percent of potassium phosphate at the fruit setting stage increased the yield of marketable sized fruit by 5.9 percent compared to the controlled plants.

• Korean Journal of Environmental Agriculture
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• v.27 no.4
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• pp.373-381
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• 2008

To select of optimum rice species and germanium (Ge) application method for production of functional rice with Ge, the growth characteristics, Ge absorption and grain quality of rice plant were investigated under different rice species (Hopyungbyeo, Junambyeo, Ilmeebyeo and Dongjinbyeo) and Ge application method (soil application and foliar spray). The rice yield by soil application was higher in the order of Hopyungbyeo $\fallingdotseq$ Junambyeo > Ilmeebyeo >> Dongjinbyeo. On the other hand, the rice yield by foliar spray was higher in the order of Junambyeo >> Ilmeebyeo > Dongjinbyeo > Hopyungbyeo. The rice yield by soil application was higher than that by foliar spray regardless of rice species. For soil application, the Ge absorption in various parts of the rice was higher in the other of rice bran > brown rice > polished rice regardless of rice species. The Ge absorption of brown rice in Hopyungbyeo, Ilmeebyeo, Dongjinbyeo and Junambyeo by soil application was 14.5, 8.0, 11.6 and $10.4\;mg\;kg^{-1}$, respectively. In leaf, stem and root, the Ge absorption by foliar spray was higher than that by soil application, whereas, in rice bran, brown rice and polished rice, the Ge absorption by soil application was higher than that by foliar spray. The optimum rice species and Ge application method were demonstrated to be Hopyungbyeo and soil application, respectively, which provided suitable conditions for production of functional rice with Ge.

• Korean Journal of Organic Agriculture
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• v.11 no.3
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• pp.65-73
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• 2003

This study was conducted to investigate the effect of microbial liquid manure(MLM) on the growth and yield characteristics of Altari radish (Raphanus sativus L.). MLM 1,000mg$.$L$^{-1}$ MLM 2,000mg$.$L$^{-1}$ and MLM 1,000mg L$^{-1}$ + microbial fermentation compost(MFC) 600kg/10a were treated. MLM was sprayed on leaves at 10, 20, and 40 days after planting. Leaf length and width of radish in all microbial fertilizer treatments were more vigorous than that of control significantly. Number of leaves was great in order of 1,000 mg$.$L$^{-1}$ MLM+600kg/10a MFC 〉2,000mg$.$L$^{-1}$ MLM〉1.000mg$.$L$^{-1}$ MLM. SPAD reading value was increased with treatments of 2,000mg$.$L$^{-1}$ MLM and 1,000mg$.$L$^{-1}$ MLM+600kg/10a MFC. Root length and weight of all the microbial fertilizer treatments tended to increase compared with control, and 1,000mg$.$L$^{-1}$ MLM+600kg/10a MFC treatment was the most effective.

• Korean Journal of Food Science and Technology
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• v.37 no.6
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• pp.893-897
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• 2005

Effect of foliar application of stevia extract on strawberry quality was investigated. Soluble solid and free sugar contents of strawberry (SS) cultivated with foliar application of stevia extract were higher, and acidity and organic acid contents were lower than those of control. Free sugars were composed of fructose, glucose, and sucrose. Organic acids were composed of citric, malic, oxalic, succinic, and fumaric acids. Sensory evaluation revealed score of sweetness, sourness, and overall acceptability for SS were higher than those of control.

• Korean Journal of Soil Science and Fertilizer
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• v.45 no.4
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• pp.649-656
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• 2012

To obtain the basic information for agricultural utilization of germanium (Ge), the growth characteristics and Ge absorption in rice plant were investigated under different Ge concentrations by foliar spray application. The Ge concentrations were treated with 0 (control), 10, 20, 40 and $80mg\;L^{-1}$ in pot (1 5000$^{-1}$ a), respectively. The Ge absorption rate in rice by foliar spray application with $80mg\;L^{-1}$ in pot was higher in the order of leaf (5.75%) > stem (4.52%) > root (<0.01%). By foliar spray application, the Ge content in rice was higher in the order of $80mg\;L^{-1}$ > $40mg\;L^{-1}$ > $20mg\;L^{-1}$ > $10mg\;L^{-1}$. When rice was treated with $80mg\;L^{-1}$ of Ge, the Ge content in rice grain was higher in the order of rice bran ($0.21mg\;pot^{-1}$) $\gg$ brown rice ($0.04mg\;pot^{-1}$) ${\geq}$ polished rice ($0.03mg\;pot^{-1}$). By foliar spray application, the Ge uptake in rice bran was higher than that in other parts. Therefore, optimum Ge concentration by foliar spray application was $80mg\;L^{-1}$ in pot based on the results from the Ge treatments.

• Journal of Bio-Environment Control
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• v.15 no.4
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• pp.390-395
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• 2006

Effects of exogenously foliar applied glycine betaine (GB) on the growth and contents of osmolyte in tomato seedling was investigated. Plants treated with exogenous glycine betaine induced better biomass production and plant height during chilling stress than the untreated plants. The total soluble sugar contents in GB foliar-applied plants lower than that of untreated plants 28 days after foliar application. Total water soluble protein contents in GB foliar-applied plants did not change 28 days after chilling stress. In untreated plant, it decreased rapidly in the beginning of chilling stress. Proline contents in untreated plants rapidly increased by the beginning of chilling stress, and then slightly decreased during the next 3 weeks. However proline contents in GB foliar-applied plants did not change during the 28 days chilling stress period. The results suggest that foliar application of GB is a effect methods to increase the chilling tolerance of tomato seedlings in protected cultivation system at low temperature season.

• Korean Journal of Organic Agriculture
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• v.19 no.1
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• pp.83-92
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• 2011

This study was established to investigate the effects of Ca application on fruit mineral nutrients, quality, and browning of 'Fuyu' sweet persimmon (Diospyros kaki). Ca foliar application at 40ml/20L/tree had a greater fruit Ca concentration than did control, Ca fertigation (40ml/20L/tree), and Ca foliar application (40ml/20L/tree) coupled with IBA fertigation (40ml/20L/tree). Fruit mineral nutrient concentrations for Mg, B, and Mn were similar or lower in the foliar treatment compared to other treatments. Fruit color was not affected. Ca treatment, whether foliar applied or fertigated, was effective in maintaining fruit firmness and in decreasing the browning symptom in fruit after MA storage at $0^{\circ}C$ for 60 and 100 days. Although Ca foliar application + IBA fertigation treatment improved fruit firmness, the positive effect on the browning and decay occurrences in fruit was not shown.

• Korean Journal of Organic Agriculture
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• v.20 no.2
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• pp.243-258
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• 2012

These grafting seeding "Torobambica", rootstock "Chuk Yang" were tested to investigate the growth, yield, and quality of eggplants which can be influenced by the bumblebee pollination and plant growth regulators. The results were as follows: According to the treatment of bumblebee pollination and plant growth regulators, the yield of eggplant was good at bumblebee pollination with tomatotone flower spray at blooming time, and was good at foliage spray on the treatment of tomatotone and $GA_3$, and was good at flower clusters spray on the treatment of tomatotone. According to the treatment of bumblebee pollination and plant growth regulators, the ratio of marketable fruit was good at pollination bumblebee with tomatotone spray on the day they flowered, was good at foliage spray on the treatment of tomatotone and $GA_3$, and was good at flower clusters spray on the treatment of tomatotone. On the mineral element contents of eggplant stems, the contents of total nitrogen were good at tomatotone flower spray at blooming time, the ones of phosphorus, potassium, and magnesium were good at tomatotone foliage spray the rate of three days, the ones of calcium were good at tomatotone flower spray in two or three days before flowering, and ones of ash were good at tomatotone flower spray at blooming time, foliage spray the rate of three days. On the mineral element contents of eggplant fruits, the contents of total nitrogen were good at tomatotone and $GA_3$ foliage spray the rate of six days, the ones of phosphorus were good at tomatotone foliage spray the rate of three days, the ones of potassium, ash were good at tomatotone and $GA_3$ flower spray at blooming time, and the ones of calcium, magnesium were good at tomatotone an $GA_3$ flower spray in two or three days before flowering.

• Journal of Bio-Environment Control
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• v.5 no.1
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• pp.50-56
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• 1996

This experiment was carried out to investigate the effects of new material, bioceramic powder in the nutrient solution(0.02%) and foliar spray(0.2%) on the growth and fruit quality of aeroponically grown tomato(Lycopersicon esculentum MILL. cv. Seokwang). Plant height was lowered, but root growth was increased both treatment of bioceramic powder into the nutrient solution and foliar spray. Cluster growth of tomato plants increased up to 14% over than that of control in the plot of foliar spray with bioceramic powder. Total plant dry weight also increased when bioceramic powder was treated both into the nutrient solution and foliar spray. T/R ratio was reduced by the treatment of bioceramic powder, but NAR and RGR showed the highest in the plot of foliar spray treated with 0.2% bioceramic powder than that of the other plots. Cumulative fruit fresh and dry weight were reduced when bioceramic powder was treated into nutrient solution but foliar spray produced more cumulative fruit fresh and dry weight than that of control. It was shown that treatment of bioceramic powder into the nutrient solution and foliar spray could be improved sugar degree without reducing fruit yields.