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RISS 인기검색어
- 검색키워드
- 저자 : Vannak Meas (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Meas, Vannak,Shon, Daniel,Lee, Young-Han Korean Society of Soil Science and Fertilizer 2011 한국토양비료학회지 Vol.44 No.1
The System of Rice Intensification (SRI) is a new concept of increasing the yield of rice produced in farming. Therefore, we investigated the impacts of planting density on nutrient uptake as affected by SRI under no-till cropping system. The field was prepared as a randomized complete block design with three treatments: $10{\times}10$ cm, $20{\times}20$ cm and $30{\times}30$ cm planting densities. The root dry mass was significantly increased in the wider planting densities (p<0.05%). The highest grain yield was obtained in $20{\times}20$ cm planting density plot (p<0.05%) due to higher plant density per unit area and spikelets number per panicle. The total uptake amounts by rice plant were significantly higher in $20{\times}$20 cm planting density plot as 94.8 kg $ha^{-1}$ for T-N and 29.9 kg $ha^{-1}$ for P than other planting densities plots, but K and Mg uptake were significantly higher in $10{\times}10$ cm planting density plot (p<0.05%). In this study, our findings suggest that SRI should be considered as a new practice for the rice productivity.
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Effects on Rice Growth of System of Rice Intensification under No-till Paddy in Korea
Meas, Vannak,Shon, Daniel,Lee, Young-Han Korean Society of Soil Science and Fertilizer 2011 한국토양비료학회지 Vol.44 No.1
The objectives of this research were to investigate the system of rice intensification (SRI) on early growth, grain yield, and yield components under Chinese milk vetch residue-mulched no-tillage cropping systems at silt loam soil. The field was prepared as a split-plot design with three replications, main plots consisted of Dongjinbyeo, and Sobibyeo as a cultivar, and subplots consisted of $10{\times}10$ cm, $20{\times}20$ cm, and $30{\times}30$ cm as a planting density. Weed infestation during rice growing season was more severe in wider planting density $30{\times}30$ at 35 days after transplanting (DAT), and $20{\times}20$ cm at 95 DAT in both Sobibyeo and Dongjinbyeo. The maximum plant height was recorded in Sobibyeo compared with Dongjinbyeo, $10{\times}10$ cm and $20{\times}20$ cm planting density compared with $30{\times}30$ cm from 20 DAT until 60 DAT. Among the three planting densities, SPAD values were significantly greater in planting density of $20{\times}20$ cm both in Sobibyeo and Dongjinbyeo followed by $30{\times}30$ cm compared with closer planting density of $10{\times}10$ cm. The lowest grain yield was observed in wider planting density of $30{\times}30$ in both Sobibyeo and Dongjinbyeo due to lower number of panicle per unit area. Our findings suggest that optimum planting density for SRI in no-tillage paddy was $20{\times}20$ cm and it should be useful the systems to small-scale rice farmers in Korea as a sustainable farming system.
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Effects on Rice Growth of System of Rice Intensification under No-till Paddy in Korea
Vannak Meas,Daniel Shon,Young-Han Lee 한국토양비료학회 2011 한국토양비료학회지 Vol.44 No.1
The objectives of this research were to investigate the system of rice intensification (SRI) on early growth, grain yield, and yield components under Chinese milk vetch residue-mulched no-tillage cropping systems at silt loam soil. The field was prepared as a split-plot design with three replications, main plots consisted of Dongjinbyeo, and Sobibyeo as a cultivar, and subplots consisted of 10×10 cm, 20×20 cm, and 30×30 cm as a planting density. Weed infestation during rice growing season was more severe in wider planting density 30×30 at 35 days after transplanting (DAT), and 20×20 cm at 95 DAT in both Sobibyeo and Dongjinbyeo. The maximum plant height was recorded in Sobibyeo compared with Dongjinbyeo, 10×10 cm and 20×20 cm planting density compared with 30×30 cm from 20 DAT until 60 DAT. Among the three planting densities, SPAD values were significantly greater in planting density of 20×20 cm both in Sobibyeo and Dongjinbyeo followed by 30×30 cm compared with closer planting density of 10×10 cm. The lowest grain yield was observed in wider planting density of 30×30 in both Sobibyeo and Dongjinbyeo due to lower number of panicle per unit area. Our findings suggest that optimum planting density for SRI in no-tillage paddy was 20×20 cm and it should be useful the systems to small-scale rice farmers in Korea as a sustainable farming system.
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Vannak Meas,Daniel Shon,Young-Han Lee 한국토양비료학회 2011 한국토양비료학회지 Vol.44 No.1
The System of Rice Intensification (SRI) is a new concept of increasing the yield of rice produced in farming. Therefore, we investigated the impacts of planting density on nutrient uptake as affected by SRI under no-till cropping system. The field was prepared as a randomized complete block design with three treatments: 10×10 cm, 20×20 cm and 30×30 cm planting densities. The root dry mass was significantly increased in the wider planting densities (p<0.05%). The highest grain yield was obtained in 20×20 cm planting density plot (p<0.05%) due to higher plant density per unit area and spikelets number per panicle. The total uptake amounts by rice plant were significantly higher in 20×20 cm planting density plot as 94.8 kg ha<SUP>-1</SUP> for T-N and 29.9 kg ha<SUP>-1</SUP> for P than other planting densities plots, but K and Mg uptake were significantly higher in 10×10 cm planting density plot (p<0.05%). In this study, our findings suggest that SRI should be considered as a new practice for the rice productivity.
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