• Korean Journal of Soil Science and Fertilizer
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• v.26 no.2
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• pp.72-77
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• 1993

This study was conducted to evaluate coated urea complex fertilizer (CUC) application for rice growth and its grain quality on clay loam (Deogpyeong series) and sandy loam (Gangseo series) in southern region of Korea, 1992. The coated urea complex fertilizer used in the experiment was CUC I and II. The CUC I is a complex fertilizer consisting of 18-12-13 for $N-P_2O_5-K_2O$ including 50% of coated urea as nitrogen source, and CUC II is the same complex fertilize as mentioned above but it contains 25% of coated urea. Seventy percent of conventional fertilizer for nitrogen level was applied as basal dose of side-band placement (SBP) and whole plowlayer placement (WPP). Greenish degree of rice leaf color at the late growth stage was high in CUC plots regardless of application method and soil series. Amount of nitrogen uptaken by the rice plant at harvesting stage was mush more in the CUC treatment compared to convential fertilizer, and also much more in CUC I than that of CUC II. In the WPP on clay loam, harvest index of CUC treatment was showed very low level, which was reduced more in CUC II plot. In the CUC treatments, perfect rice grain ratio decreased remarkably, and the notched-belly rice kernel ratios among imperfect rice grain increased drastically. In rice grain, Hon-value(Mg to K.N ratio) decreased, protein and amylose contents increased in CUC application plots in WPP. In addition, gel consitency and alkali spreading value related to eating quality in CUC plots were getting longer and lower, respectively. The yield in CUC plot was similar to conventional fertilizing, but significant decreased in SBP. As a result, the rice grain quality became poor with the coated urea complex fertilizer application, but it could be improved by incorporation with fast-release fertilizer.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.58 no.4
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• pp.468-473
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• 2013

This study was conducted to make clustering analysis based on major physicochemical characteristics related to palatability of 394 Korean rice land-races. The items investigated were protein content, Mg content, K content, Mg/K ratio, Toyo-taste value, ADV (alkali digestion value) and amylose content. The range of the physicochemical characteristics such as amylose, protein, magnesium, potassium was from 12.4 to 28.9%, from 5.2 to 9.9%, from 12.7 to 37.7 mg and from 60.0 to 125.9 mg, respectively. In this experiment, the grain quality, properties significantly associated with the estimates of Toyo taste meter, were protein and amylose contents and hot viscosity. Also, at the expected taste as a cooking rice, using Toyo taste meter, a total 16 accessions were selected as good taste as "Ilpumbyeo". Also, IT173444, IT008530 and IT006554 were selected as remarkable sources for the cooking rice, in terms of gelatinated temperature and Toyo taste meter value.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.41 no.3
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• pp.286-294
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• 1996

This experiment was conducted to determine the rice quality between slowlelease fertilizer(SRF) and conventional fertilizer (CF) with the amount of 100% and 80% under direct seeding on dry paddy field, respectively. In rice quality, the percentage of matured grain and immatured grain was higher in CF with machine transplanting than in SRF with direct seeding, and the less amount of fertilizer applied, the lower percentage of immatured grain was obtained. The percentage of carbohydrate showed the difference between CF and SRF, and higher at the level of 100% applicated than that of 80% application. The contents of fat and ash were higher in CF with less fertilizer, and there was no trend to different cultural methods but it was related to the amount of fertilizer in amylose content. The nitrogen and sodium content of milled rice was high in SRF under machine transplanting as well as direct seeding. Calcium and magnesium content showed high in direct seeding but there was not significantly difference between CF and SRF.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.3
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• pp.382-390
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• 1995

To compare the rice yield and grain quality characteristics between mature(MPF) and reclaimed paddy field(RPF), grain yield and its components, some physicochemical properties of rice grain and palatability of cooked rice were investigated for Dongjinbyeo grown at three different locations of mature and reclaimed paddy field, respectively, in south western part of Korea. Variation of culm length in mature paddy area was larger than that in reclaimed saline area. Panicle number per m$^2$ in RPF was more then that in MPF but grain number per m$^2$, filled grain ratio and 1, 000-grain weight in RPF were lower than those in MPT. Average yield of milled rice in RPF was 12% lower than that in MPF (5.l1t /ha). Daejeon showed the highest yielding among MPF and Yeongam reveald the highest grain production among RPF. RPF rices had slightly higher carbohydrate content and alkali digestibility but lower protein, fat and amylose content compared with MPF rices. RPF rices also exhibited higher mineral contents, Mg/K ratio, peak and hot viscosity compared with MPF rices. RPF rice showed slightly poor apparent grain quality but a little better eating quality of cooked rice compared with MPF rice.

• Korean Journal of Environmental Agriculture
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• v.17 no.1
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• pp.54-58
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• 1998

This experiment was conducted to find out the effects of fermented compost using cattle manure and Autoclaved Lightweight Concrete(ALC) waste and duck raising in rice growing paddy fields on growth and quality of rice. By application of fermented compost of cattle manure incoporated ALC waste with amount of 2,000kg/10a, rice yield was reduced 2.9%, and 4.1% in 1,000kg/10a of compost with raising ducks plots as compared with application of standard level of chemical fertilizer. The ratio of head rice was slightly high in plots of compost application and white-belly kemeled rice was reduced by application of $1,500{\sim}2000kg/10a$ compost. The ratio of Mg/K was the highest in application of 1,000kg compost with raising duck. Efficiency of weed control by raising duck with free hexbiades was sufficient and their effects showed no difference between raising duck plots and herbidde plot.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.6 no.1
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• pp.80-87
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• 1985

쌀, 보리를 중심으로 한 전분질 식량만이 농업생산의 전부인 것처럼 여겨오던 주곡시대에서 경제성장과 더불어 고칼로리성과 조미성 식품생산이 강조되는 다변화 식량시대로 옮겨지게 되면서 크게는 정부의 농업정책이나 적게는 농가의 영농설계가 크게 바뀌어져 가고 있는게 사실이다. 식량에서 큰 비중을 차지하던 보리증산이 농가자율에 맡겨지게 도고 다수확 이점을 가지고 있던 통일벼보다는 미질을 우선으로 하는 일반계 벼 재배가 늘어가는 것과 함께 식용유, 채소, 축산물이 대량소비되는 시대로 전환되어 가고 있다.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.3 no.10
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• pp.60-66
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• 1982

벼농사의 궁극적인 목적이 좋은 쌀을 많이 생산하는 일이므로 양적으로 많은 쌀을 생산하는 일도 중요하지만 동시에 질적으로 우수한 쌀을 만드는데도 깊은 관심을 갖어야 할 것이다. 그동안 쌀의 생산기술이 많이 발달 향상되었지만 미질을 향상시키는 면에서는 미흡한 점이 적지 않다. 벼농사를 마무리짓는 수확과 탈곡$\cdot$조제 그리고 건조$\cdot$저장을 잘 해서 질이 좋은 쌀이 항시 공급될 수 있도록 되어야 하겠다.

• Proceedings of the Korean Society of Crop Science Conference
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• 2006.04a
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• pp.386-387
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• 2006

• Proceedings of the Korean Society of Crop Science Conference
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• 1995.05a
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• pp.72-73
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• 1995

• Proceedings of the Korean Society of Crop Science Conference
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• 1994.06a
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• pp.152-153
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• 1994