• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.1
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• pp.33-38
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• 1995

This experiment was conducted to elucidate the effect of the midsummer drainage times on lodging characters, field lodging and yield in direct seeding rice culture in puddled soil. Dongjinbyeo was seeded at May 11 by seeding machine with 4cm of furrow depth and drained, one（50days after seeding DAS）） two （30DAS and 50DAS）, and three times （30DAS, and 50DAS and 60DAS）. The results are as follows. Culm length was shorten and the wall of N3, N4 were thicken as the drain-age times were increased. As the drainage times were increased breaking weights were increased but the lodging index were decreased. Lodging was occurred seriousely at none drainage, but wasn't occurred two or three times drainage. Yield was higher at 1~2 times drainage compared with none and three times drainage. Therefore, two times midsummer drainage is recommend-able water management method for direct seeding rice culture in puddled soil.

• Proceedings of the Korean Society of Crop Science Conference
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• 1989.02a
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• pp.80-81
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• 1989

• Proceedings of the Korean Society of Crop Science Conference
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• 2000.11a
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• pp.159-160
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 1998.04a
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• pp.157-158
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• 1998

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.3
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• pp.184-194
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• 1990

This experiment was carried out at International Rice Research Institute (IRRI) farm to investigate the effect of plant growth regulators on lodging in rice and to determine plant characteristics when plant growth regulator applied at different concentrations and different times. The experimental plant growth regulator Hoe 78784 when applied at booting prevented lodging and significantly increased grain of IR 21820-154-3-2-3. However, they did not affect significantly the crop vegetative characteristics and yield component, except by decreasing plant height and internode elongation, and increasing the number of vascular bundles, and the thickness and diameter of the third and fourth internodes. But when applied at 30 DT, it significantly decreased grain yield of all test varieties due to shortened panicle length and increased unfilled spikelet percentage. Hoe 78784 applied at heading did not increase yield nor did it prevent lodging.

• Korean Journal of Food Science and Technology
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• v.42 no.3
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• pp.292-297
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• 2010

This study was conducted to determine and compare hardness, thermal properties (by DSC), pasting properties (by RVA) and texture of brown rice and white rice, either lodged or non-lodged, with respect to lodging time. The hardness and the thermal properties of lodged brown rice and white rice decreased with lodging time, while those of nonlodged brown and white rice increased. In addition, the rice kernel hardness and the thermal properties had high correlation coefficients. The pasting properties, with the exception of setback, and the textural properties of lodged brown and white rice decreased with lodging time, while those of non-lodged brown and white rice increased.

• Journal of Korean Society of Rural Planning
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• v.12 no.3 s.32
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• pp.107-115
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• 2006

The purpose of this study was to document a phenomenon of rural tourism in Korea by Investigating characteristics of 50 villages that had participated in a competition of 'stimulation of rural village' The results are as follows: 1) The degrees of activation of rural tourism varied according to marketing efforts made by individual provincial(local) government. The results of contest indicated that provinces such as Gangwon-do, Chungnam-do, and Gyunggi-do showed highest performance among other competing local governments; 2) The results revealed that the total profit generated from direct sale of farm products outnumbered profits gained from sales of lodging and foods. This indicated that there is a room for improvement with respect to boosting more sales on lodging and food; 3) The regression analysis indicated a significant relationship between profits earned from sales of experiential tourism product and those from direct sale of farm products(multi-correlation coefficient: 0.38); 4) It was identified that Gyunggi and Ganwon provinces were ranked first in sales of foods and those of lodging, respectively; 5) Finally, it was showed that among the 50 participating villages, only 16 ones hold festivals by means of attracting tourists from outside.

• Korean Journal of Soil Science and Fertilizer
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• v.34 no.3
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• pp.173-177
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• 2001

This study was conducted to investigate a potential utilitization of multivariate statistical analysis(Factor analysis, Discrimination analysis) on interpretation of rice plant lodging reason. Rice plants were sampled in paddy around Taegu city at from 25 to 29 of September in 2000. Mineral nutrient content(phosphate, potassium) of rice plant were significantly higher at 99% level, Silicate content were lower at 95% level in lodged samples than in normal. Plant characteristics associate with lodging(Culm length, second and third internode length, bight of center gravity) were significantly longer in lodged rice plant than in non lodged. Result of Factor analysis were that first principle component were culm length, second(N2) and third internode length(N3), second principle component were Ca content, first internode length(N1) and N3/culm length, third principle component were center gravity length(G) and G/culm length, fourth were nitrogen, phosphate, and potassium content, fifth were N2/culm length, N2+N3/culm length, Sixth was silicate content of rice plant. Linear discriminant equation distinguished lodged rice plants with non lodged rice plants very well. Prediction value was 100%, most explainable variable were phosphate content, culm length and third length.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.47 no.4
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• pp.273-278
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• 2002

An efficient low-input system (LIS) for fertiliser use in rice cultivation is necessary to reduce fossil energy use and pollution. Japanese people like Japonica rice, especially cv. Koshihikari. However, it has very low lodging resistance in Japanese weather condition. Our objective was to develop a LIS with the minimum sacrifice of grain yield in rice. Koshihikari was grown using conventional fertilization as a control (CON) with 4 g N $m^{-2}$., 8g $P_2$ $O_{5}$ $m^{-2}$ and 8 g $K_2$O $m^{-2}$ as a basal fertilizer dressing. It was compared with a low fertilizer treatment (LF) with only 4 g $P_2$ $O_{5}$ $m^{-2}$ as a basal dressing in the first year and no basal phosphorus fertilizer in the second year. Chopped rice straw was incorporated into the soil before the cropping season in both years. Fertilizer of 4 g N $m^{-2}$ was top-dressed at 15 days before heading in CON plots and 30 days before heading in LF plots in both years. Lodging was significantly less in LF than in CON plots, however, no rice straw effect was found in low fertilized condition. Grain yields in LF plots were reduced by 15-16% below those of CON plots. Lower yields in LF plots were associated with a reduced number of spikelets per unit area. However, big spikelet size was acquired in LF by 10 days earlier N top dressing than CON plots. A close relationship was found between spikelet numbers and N content of the plant at heading, and between grain yield or shoot dry weight and N content of the plant at maturity. Regardless of the fertilizer application methods, N use efficiency for the number of spikelets, final total dry matter and grain yield was essentially identical among fertilizer treatments. The reduced growth and yield in the LF plots resulted from low absorption of nitrogen. Conclusively, LIS can drastically reduce chemical fertilizer use and facilitate harvest operations by reducing lodging with some yield reduction..

• KOREAN JOURNAL OF CROP SCIENCE
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• v.42 no.6
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• pp.722-728
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• 1997

This experiment was conducted to establish the cultural practice for reduction of lodging by the effective water management under direct seeding on flooded paddy surface as treated by the drainage times using Dongjinbyeo at National Honam Agricultural Experiment Station during 1994-1995. As the increased midsummer drainage times, the field lodging were reduced by reduction of culm length and large amounts of root with favorable distribution in deep soil, indicating low canopy architecture could promote the light transmission in the plants and favorable root growth. The yield performance was high by increased drainage times which contributed to mainly percentage of ripened grain and 1, 000-grain weight. As a result, two to three times midsummer drainage as effective water management during plant growth was desirable.