Comparison of Growth, Yield and Yield Components among Rice Cultivars for Organic Farming in No-tillage Paddy
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Organic farming system in rice paddy is rapidly expanding in Korea. This study was to find out optimum japonica rice cultivars for organic farming. A field research was conducted to evaluate the characteristics of japonica rice cultivars under no-tillage paddy at Doo-ryangmyeon, Sacheon, Gyeongsangnam-do, Korea. The experimental soil was Juggog series (silty clay loam: 56.0% silt, 31.2% clay and 12.8% sand). In experiment, ten lines of Japanese rice cultivars were tested under no-tillage amended with rye (NTR) and no-tillage without cover crop treatment (NTNT). In addition, two Korean japonica rice cultivars as check cultivars were used in this study. The grain yield in NTR was significantly higher in 6.13 Mg ha-1 for Kinuhikari, 5.30 Mg ha-1 for Komekogane, 5.25 Mg ha-1 for Kosihikari, 5.22 Mg ha-1 for Mazizbare and 5.12 Mg ha-1 for Akitakomachi compared to two Korean rice cultivars (4.57 Mg ha-1 for Hwayoungbyeo and 4.00 Mg ha-1 for Ilmibyeo) in that order. While, grain yield in NTNT was significantly higher in 4.90 Mg ha-1 for Akitakomachi 3.81 Mg ha-1 for Hinohikari, 3.74 Mg ha-1 for Umezkusi, 3.67 Mg ha-1 for Kosihikari and 3.54 Mg ha-1 for Dondokuri compared to 3.02 Mg ha-1 for Ilmibyeo and 2.36 Mg ha-1 for Hwayoungbyeo, respectively. The number of panicle per m2 and grain number per panicle were indispensible for increasing the yield of rice. These results were able to find out optimum japonica rice cultivar Akitakomachi for organic farming in no-tillage paddy.
Abstract
Organic farming system in rice paddy is rapidly expanding in Korea. This study was to find out optimum japonica rice cultivars for organic farming. A field research was conducted to evaluate the characteristics of japonica rice cultivars under no-tillage paddy at Doo-ryangmyeon, Sacheon, Gyeongsangnam-do, Korea. The experimental soil was Juggog series (silty clay loam: 56.0% silt, 31.2% clay and 12.8% sand). In experiment, ten lines of Japanese rice cultivars were tested under no-tillage amended with rye (NTR) and no-tillage without cover crop treatment (NTNT). In addition, two Korean japonica rice cultivars as check cultivars were used in this study. The grain yield in NTR was significantly higher in 6.13 Mg ha-1 for Kinuhikari, 5.30 Mg ha-1 for Komekogane, 5.25 Mg ha-1 for Kosihikari, 5.22 Mg ha-1 for Mazizbare and 5.12 Mg ha-1 for Akitakomachi compared to two Korean rice cultivars (4.57 Mg ha-1 for Hwayoungbyeo and 4.00 Mg ha-1 for Ilmibyeo) in that order. While, grain yield in NTNT was significantly higher in 4.90 Mg ha-1 for Akitakomachi 3.81 Mg ha-1 for Hinohikari, 3.74 Mg ha-1 for Umezkusi, 3.67 Mg ha-1 for Kosihikari and 3.54 Mg ha-1 for Dondokuri compared to 3.02 Mg ha-1 for Ilmibyeo and 2.36 Mg ha-1 for Hwayoungbyeo, respectively. The number of panicle per m2 and grain number per panicle were indispensible for increasing the yield of rice. These results were able to find out optimum japonica rice cultivar Akitakomachi for organic farming in no-tillage paddy.
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