• Title/Summary/Keyword: Puddled-soil

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Effect of Drainage Duration before Seeding and Furrow Depth on Seedling Establishment and Growth in Direct Drill Seeding Culture of Rice on Puddled Soil (벼 무논골뿌림 재배에서 파종전 논 굳힘 일수 및 골깊이가 입모 및 생육에 미치는 영향)

  • Kim, Sang-Su;Back, Nam-Hyun;Seok, Soon-Jong;Lee, Seon-Yong;Kim, Jong-Ho;Cho, Dong-Sam
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.39 no.6
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    • pp.531-536
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    • 1994
  • Drainage duration before seeding and furrow depth desirable for establishment and growth in direct drill seeding of rice on puddled paddy soil were investigated. Furrow depths tested were 2, 4 and 6cm in combination with drainage duration 2, 4, and 6days. Dongjinbyeo was used and seeded on May 11, 1993. Seedling establishment were improved by longer drainage duration and by shallower furrow. Lodging occurred moderately at furrow depth of 2cm with 4 and 6days of surface drainage before seeding. This lodging might be attributable to the shallow burying of shoot below soil surface. Rice yield was highest at furrow depth of 4cm with 4days drainage before seeding. In considering seedling establishment and yield, desirable drainage duration before seeding and furrow depth might be 4days and 4cm, respectively. Cone(115g) penetration depth, dropped at 1m above soil surface, was 6 to 7cm on the date after 4days drainage before seeding.

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Effect of Band Application of Slow Release Fertilizer on Rice Growth and Yield in Puddled-soil Drill Seeding (벼 무논골뿌림재배시 완효성비료의 측조 시비가 생육 및 수량에 미치는 영향)

  • Kim, Sang-Su;Choi, Min-Gyu;Park, Keon-Ho;Lee, Seon-Yong;Cho, Su-Yeon;Cho, Dong-Sam
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.41 no.1
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    • pp.68-76
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    • 1996
  • To elucidate the optimum fertilizer level and application method for band application under puddled-soil drill seeding in Jeonbuk series of fluvio-marine alluvial soil at National Honam Agricultural Experiment Station in 1995, using Dongjinbyeo, slow releasing compound fertilizer of 100% and 80% to conventional application level was applied totally as basal fertilizer simultaneously with seeding under 3cm and 5cm depth from soil surface in a distance of 4cm from the seeded row. Plant height was taller and tiller number was higher in band application than conventional application but ratio of effective tiller was vice versa. Panicle number was more but ratio of effective tiller ratio was lower in 100% than 80% level of band application and they were higher in 3cm than 5cm depth from soil surface. Leaf area index and dry weight was higher in conventional application at early growth stage but was vice versa after maximum tillering stage, and they were higher in 3cm depth at early growth stage but 5cm depth after maximum tillering stage. NH$_4$-N in soil was higher in conventional application at 25 days after seeding but, thereafter was lower than band application and it was higher in 3cm than 5cm depth till 40 days after seeding but was versa, thereafter. Lodging degree was slightly higher in band application, 100% level and 5cm depth than in their counterparts. Panicle number and grain number per $m^2$ was lower in conventional application than 80% or 100% level of band application without significant difference between band application levels or application methods. Yield was higher at 80% level of band application under 3cm depth than conventional application, but no significantly different among other application methods. Therefore, 80% level of band application under 3cm depth of soil surface was more effective for puddled-soil drill seeding on the basis of the reduction of application efforts, better plant growth and higher yield in rice.

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Effects of Sprout Length, $Ca0_2$ Coating and Seeding Depth on Seedling Stand and Early Growth in Puddled-soil Drill Seeding of Rice (벼 무논골뿌림재배시 최아장, 과산화석회 처리 및 파종심도가 입모수와 초기생육에 미치는 영향)

  • Kim, Sang-Su;Park, Hong-Gue;Choi, Weon-Young;Lee, Seon-Yong;Cho, Soo-Yeon;Cho, Dong-Sam
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.41 no.3
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    • pp.295-301
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    • 1996
  • This study was carried out to clarify the effect of sprout length, burried depth of seed and CaO$_2$ seed coating on emergence, seedling stand and early growth of rice in puddled-soil drill seeding at Junbuk in 1995. The cultivar tested was Dongjinbyeo(Japonica type). Although the longer sprouted seeds were caused the better seedling stand, 4mm sprout length of seeds appeared to be appropriate for good seedling stand and seeding uniformity, while 6mm sprouted seed resulted in ununiform seedling establishment. Rapid emergence and increased seedling stand were obtained by CaO$_2$ seed coating, which had effect more on soaked seed than on sprouted seed, but the seedling stand of sprouted seeds significantly reduced at deeper than 1cm seeding depth and also emergence rate of sprouted seeds significantly reduced at deeper than 2cm seeding depth.

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Effect of Nitrogen Management on Rice Growth and Yield under Different Seedling Density in Puddled -soil Drill Seeding (벼 무논골뿌림 재배시 입모수별 질소시비방법이 생육 및 수량에 미치는 영향)

  • Kim, Sang-Su;Back, Nam-Hyun;Lee, Seon-Young;Cho, Dong-Sam
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.40 no.5
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    • pp.629-636
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    • 1995
  • This study was carried out to clarify the proper nitrogen application methods under the different seedling density in puddled-soil drill seeding of rice. Seedling density was adjusted as 30, 60, 90, 120 and 150ea/$m^2$ just after emergence and nitrogen was applied with five methods including conventional respectively. The maximum tillering stage was shorten as the seedling density was increase but decreased the percentage of productive tillers. Lodging was occurred serverely as the seedling was more than 120ea/$m^2$, when nitrogen was applied at panicle initiation stage. Grain yield wasn't significantly different among seedling densities when it was more than 60ea/$m^2$, but the density of 30ea/$m^2$ was decreased. It wasn't significantly different among the nitrogen application methods when it was more than 90ea/m, but was higher at early application of tillering fertilizer (T$_2$) than conventional method when the seedling density was less than 60ea/$m^2$. Supposing that the yield of reseeding is the same as optimum seedling density, minimum seedling density needs for reseeding would be less than 55 ea/$m^2$ as the aspect of income allowed for managing expense.

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Effects of Time and Amounts of Top Dressed Nitrogen at the Panicle Formation Stage on Growth and Yield of Puddled-Soil Drill Seeded Rice (무논 골뿌림에서 질소(窒素) 수비(穗肥) 시기(時期) 및 시용량(施用量)에 따른 벼의 생육(生育)과 수량성(收量性))

  • Yoo, Chul-Hyun;Shin, Bog-Woo;Lee, Sang-Bog;Cho, Guk-Hyun;Rhee, Gyeong-Soo
    • Korean Journal of Soil Science and Fertilizer
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    • v.29 no.1
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    • pp.3-7
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    • 1996
  • Effects of the nitrogen application time and amounts on the nitroger. uptake and recovery of fertilizer nitrogen applied at panicle formation stage was investigated in connection with the growth and yield of rice drill-seeded in puddle-soil. silt loam of Jeonbuk series. Urea was applied as nitrogen source. Nitrogen uptake and recovery of fertilizer nitrogen by rice plant was highest in the treatment applied nitrogen at 20 days before heading. Culm length, internode length (4th and 5th) and lodging index were increased by earlier application time and higher level of nitrogen. but filled grain ratio and 1,000 grain weight showed the opposite trend Panicle number per square meter and grain number per panicle was significantly decreased in nitrogen application at 10 days before heading. Rice yield was the highest in 33kgN/ha(conventional amount at 20days before heading, and yield in 26kgN/ha(80% of conventional amount) at 20 days before heading and in 33kg/ha at 15days before heading were nearly the same as conventional treatment.

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Effect of Different Seed Coating Materials on Seedling Establishment and Growth in Direct Seeded Rice under Puddled Wet Soil Condition (벼 무논직파재배의 종자 코팅소재별 발아 및 유묘생육 특성)

  • Park, K.H;Kim, Y.S.;Chang, J.T.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.15 no.1
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    • pp.63-73
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    • 2013
  • The research was conducted to determine a seed germination and seedling establishment of rice plant under seed coating materials such as iron, silicate, and phyllite and under covered with silicate and iron coated & silicate covered in the puddled wet hill seeding and wet line seeding methods. The seedling establishment was high in silicate and untreated control of 100%>phyllite coating of 91.5%>silicate coating of 88%>iron coating and silicate covered of 86%>silicate covered of 75.5% in the puddled wet hill seeding method, respectively. At 35days after treatment there was high in seedling height at silicate covered of 23.8cm>control of 23.6cm>silicate coating of 21.4cm>phyllite coating of 20.2cm>iron coating and silicate covered of 16.8cm>iron coating of 15.4cm. In puddle wet line seeding method rice seedling establishment was high at control and silicate covered of 100%>iron coating and silicate covered by 97.5%>phyllite coating by 94.8%>iron coating by 86%. Seedling height was high in silicate covered of 22.1cm>control of 21.2cm>silicate coating of 20.0cm>phyllite coating of 19.0cm>iron coating of 17.7cm>iron coating and silicate covered of 17.0cm, respectively.

Growth and Yield of Rice as Affected by Nitrogen Level and Split-Application Method in the Puddled Drill Seeding in Tidal Land Paddy Field (염해답(鹽害畓)에서 벼 무논골뿌림재배시(栽培時) 질소시비량(窒素施肥量) 및 분시방법(分施方法)에 따른 생육(生育)과 수량성(收量性))

  • Shin, Bog-Woo;Yoo, Chul-Hyun;Choi, Song-Yeol;Jeong, Ji-Ho
    • Korean Journal of Soil Science and Fertilizer
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    • v.29 no.3
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    • pp.264-269
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    • 1996
  • Four leavels of nitrogen and five split-application method were investigated in the puddled drill seeding of rice in tidal land paddy field of Munpo series in Gyehwado. Soil ammonium concentration increased of higer nitrogen level, and was higher in latex coated urea(LCU) than urea split-application, and stage of $NH_4-N$ was the higher in maximum tillering stage. Rice yield, nitrogen availability and yield increment rate according to nitrogen levels were the highest when nitrogen was applied 200kg/ha and also it were the highest in the LCU application by 30% decreased than urea application as affected by application method. Adequate application amount of nitrogen was estimated 222kg/ha in direct drill seeding of rice in tidal land paddy field.

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Changes in Physicaochemical Properties of Soil, Yield, and Milling Quality of Rice Grown under the Long-term No-till Rice System (장기 무경운 벼 생산체계에서 토양의 이화학성, 쌀 수량 및 도정형질의 변화)

  • 홍광표;김영광;정완규;손길만;송근우;최용조;최진용
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.48 no.3
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    • pp.196-199
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    • 2003
  • This experiment was conducted to evaluate the differences in physicochemical properties of soil, grain yield and milling recovery ratio and grain appearance of rice grown in long-term no-till and ordinary till systems. The paddy in no-till rice system was unploughed but straw-mulched for 15 years from 1988 to 2002 at the Experimental Paddy of Gyeongnam Agricultural Research and Extension Services, while the paddy in ordinary till system was ploughed and puddled every crop year, A 5cm organic layer was formed in 11-year no-till rice system, in which exchangeable cation and phosphate were accumulated. In no-till paddy organic matter, bulk density and solid phase of surface soil significantly increased, while pH, exchangeable cation, phosphate, liquid and gaseous phase decreased. Tillage made the very top soil soft, but made deep soil below 5cm significantly hard. In the 1st year of no-till, topsoil showed hard, but in the process of the time in no-till system, the top- and sub-soil showed softer, Yield and yield components of rice showed no differences between till- and no-till rice systems. Milling recovery ratio and grain appearance were not significantly different between no-till and till-rice systems.