• Title/Summary/Keyword: nitrogen split method

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Effect of Nitrogen Split-application on the Rice Growth and Yield Production under Machine-transplanting in Rice (Oryza sativa L.) (수도 기계이앙 재배에서 질소시비가 건물생산 및 수량에 미치는 영향)

  • 김정곤;이선용;김종호;임무상;조정익
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.32 no.1
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    • pp.48-54
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    • 1987
  • To search for the optimal nitrogen application method for the machine transplanting to Dongjinbyeo, compared to conventional method, in the various methods of nitrogen split application at different growth stages of rice plant. This experiment was performed at Honam Crop Experiment Station, in 1985 year. The results were as followed; the nitrogen contents of leaf blade was the highest at maximum tillering stage under the conventional method and reduction division stage under the nitrogen top-dressing at panicle initiation and 5 times split application of nitrogen for the whole rice growth stages. CGR, RGR and NAR after heading was highest under 5 times split application of nitrogen for the whole rice growth stages. Relationships between CGR and NAR, NAR and RGR, CGR and RGR showed the positive correlation significantly at each rice growth stage, respectively, and showed more high correlation according to further rice growth stages. The degree of contribution of CGR to rice grain yield was the highest at 20 days after heading. Rice grail: yield was higher under top-dressing of nitrogen at panicle initiation and basal application (30%) + 4 times equal dispensing top-dressing after basal application of nitrogen than conventional method.

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Reasonable Split Application Method of Nitrogen Fertilizer for Early Dry Seeding Culture of Rice in Honam Plain Area (호남평야지에서 벼 건답직파 조기파종재배에 알맞은 질소 분시방법)

  • Kim, Sang-Su;Choi, Weon-Young;Back, Nam-Hyun;Choi, Min-Gyu;Park, Hong-Kyu
    • Korean Journal of Soil Science and Fertilizer
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    • v.40 no.6
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    • pp.460-464
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    • 2007
  • This study was carried out to elucidate the proper split application method of nitrogen fertilizer for early dry seeding culture of rice in Honam plain area from 1997 to 1998 in Korea. Dongjinbyeo was selected as rice variety for this experiment. The rate of $160kg\;ha^{-1}$ of nitrogen was split as 40-30-30% of total nitrogen at three different application time combination ; T1) basal-5th leaf-panicle formation(PF) stage, T2) 3rd leaf-5th leaf-PF, and T3) 3rd leaf-7th leaf-PF. The content of $NH_4-N$ in soil at 5th leaf stage was higher in top dressing plots(T2, T3) compared with basal application(T1), at 7th leaf stage it was most in top dressed at 3rd leaf and 5th leaf stage, but there was no difference at heading stage. Amount of nitrogen uptake and nitrogen use efficiency was higher in the order of T3, T2 and T1(basal application). Spikelet number per unit area was more in the order of T3, T2 and T1, but rate of ripened grain and 1,000 grain weight were not significantly different among three nitrogen split application methods. Milled rice yields were higher in top dressed plots compared with basal nitrogen application plots. From the results of this experiment, reasonable nitrogen split application method for early dry seeding culture of rice could be 40-30-30% of total nitrogen at 3rd leaf, 7th leaf and panicle formation stage.

Nitrogen Management for Infant Rice Seedlings with Extended Nursery Duration by Delayed Transplanting (벼 육묘일수가 지연된 어린모 이앙재배시 질소분시 방법이 생육 및 수량에 미치는 영향)

  • Han, Hee-Suk;Yang, Woon-Ho;Park, Jeong-Hwa;Yoon, Young-Hwan;Kim, Je-Kyu;Yang, Won-Ha;Park, Jong-Wook
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.53 no.3
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    • pp.239-243
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    • 2008
  • This experiment was carried out to elucidate the appropriate split application method of nitrogen fertilizer in infant rice seedlings which show poor seedling growth resulted from extended seedling nursery duration more than 12 days. The 16 day-old infant rice seedling (DOIRS) showed poor seedling growth than 8 day-old seedling. Early growth of transplanted 16 DOIRS was poor, compared with that of transplanted 8 DOIRS. However, the poor plant growth estimated by plant height, tiller number, and the number of newly developed roots was compensated by 70-0-30% (basaltillering-panicle initiation) of nitrogen split application. In 70-0-30% plots among split nitrogen application methods, tiller number, biomass, and leaf area at heading stage of rice showed the highest values. Sixteen DOIRS plots showed lower grain filling and 1000-grain weight, resulted in lower yield of rice than 8 DOIRS plots in the same nitrogen split application. However the lower yield in 16 DOIRS plots was recovered by 70-0-30% of nitrogen split application method to a similar level in 8 DOIRS plots in which nitrogen was split applied by 40-30-30%.

Effect of Nitrogen Split Application on Growth and Yield in Direct Seeding Rice on Flooded Paddy (담수직파재배시(湛水直播栽培時) 질소분시방법(窒素分施方法)에 따른 벼 생육(生育)과 수량성(收量性))

  • Yoo, Chul-Hyun;Shin, Bog-Woo;Lee, Sang-Bog;Rhee, Gyeong-Soo
    • Korean Journal of Soil Science and Fertilizer
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    • v.28 no.4
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    • pp.312-318
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    • 1995
  • To investigate the effect of N split application on the increasing ratio of yield and the yield of rice, urea and slow-releasing complex for sideband placement of fertilizer were applied in Jeonbuk series of Honam plain area. Increasing ratio of yield by N split application was higher in puddled drill seeding (PDS) than flooded direct seeding surface (FDSS) under split application of 40-0-30-30% and 70-0-0-30% at basal, 3 leaf, 5 leaf and panicle initiation stage, respectively. It was also higher in LCU application of 70 % of total urea amount than urea application but was not different between two methods of seeding in urea application. Nitrogen ratio transfered to rough grain of rice was higher in FDSS than PDS, errespective of methed of split application, except for the split application of 0, 40, 30 and 30% N fertilizer at basal, 3 leaf, 5 leaf and panicle initiation stage, respectively. Nitrogen amount outflowed by artificial drainage for paddy field drying in a day after application of fertilizer was 1,134g/10a in PDS. $NH_4-N$ incerased higher in PDS than FDSS under split application of urea, while was versa under LCU application.

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Effects of Nitrogen Levels and Split Application Ratio on Growth and Yield in Liriope platyphylla WANG et TANG (맥문동(麥門冬)의 질소수준(室素水準)과 분시비솔(分施比率)이 생육(生育)과 수량(收量)에 미치는 영향(影響))

  • Seong, Jae-Duck;Park, Ki-Do;Kwack, Yong-Ho;Kim, Sung-Man;Kang, Jin-Ho
    • Korean Journal of Medicinal Crop Science
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    • v.8 no.1
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    • pp.69-73
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    • 2000
  • To investigate proper method of nitrogen application, six levels of nitrogen fertilizer and five different split applications were tested in Liriope platyphylla. Leaf length and content of total nitrogen in plant increased with the increase of nitrogen application level from zero to 360kg per ha. Number and weight of tuber increased with the increase of nitrogen level and tuber production reached to highest level of 4.44M/T per ha with the level of 220kg nitrogen. And then, tuber production decreased with the addition of extra nitrogen fertilizer to level of 360kg per ha. In the research of proper nitrogen split application, tuber yield (3.52M/T per ha) was increased by 18% at the combination of 40% basal application and three times of top dressing, than that of 100% basal application.

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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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The Effects of Nitrogen Application Methods on the Nitrogen Efficiency and Weed Population under the Lowland Rice (수도에 대한 시비방법이 질소효율 및 잡초군락에 미치는 영향)

  • Lee, M.H.;Datta, S.K. De
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.21 no.2
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    • pp.269-276
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    • 1976
  • This experiment was conducted to find out how to increase efficiency of fertilizer nitrogen and how to change the weed population with different methods of nitrogen application. Mudball deep placement, at 10-12cm soil depth, produced significantly the highest grain yield within the application methods with same amount of nitrogen (60kg N/ha). It produced also same grain yield with conventional application methods, timely split application method, with 90kg N/ha. Basal application of nitrogen increased weed population and it showed higher dry weight of weed than top dressing methods at early growth stage of rice.

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A Three-year Study on the Leaf and Soil Nitrogen Contents Influenced by Irrigation Frequency, Clipping Return or Removal and Nitrogen Rate in a Creeping Bentgrass Fairway (크리핑 벤트그라스 훼어웨이에서 관수회수.예지물과 질소시비수준이 엽조직 및 토양 질소함유량에 미치는 효과)

  • 김경남;로버트쉬어만
    • Asian Journal of Turfgrass Science
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    • v.11 no.2
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    • pp.105-115
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    • 1997
  • Responses of 'Penncross' creeping bentgrass turf to various fairway cultural practices are not well-established or supported by research results. This study was initiated to evaluate the effects of irrigation frequency, clipping return or removal, and nitrogen rate on leaf and soil nitrogen con-tent in the 'Penncross' creeping bentgrass (Agrostis palustris Huds.) turf. A 'Penncross' creeping bentgrass turf was established in 1988 on a Sharpsburg silty-clay loam (Typic Argiudoll). The experiment was conducted from 1989 to 1991 under nontraffic conditions. A split-split-plot experimental design was used. Daily or biweekly irrigation, clipping return or removal, and 5, 15, or 25 g N $m-^2$ $yr-^1$ were the main-, sub-, and sub-sub-plot treatments, respectively. Treatments were replicated 3 times in a randomized complete block design. The turf was mowed 4 times weekly at a l3 mm height of cut. Leaf tissue nitrogen content was analyzed twice in 1989 and three times in both 1990 and 1991. Leaf samples were collected from turfgrass plants in the treatment plots, dried immediately at 70˚C for 48 hours, and evaluated for total-N content, using the Kjeldahl method. Concurrently, six soil cores (18mm diam. by 200 mm depth) were collected, air dried, and analyzed for total-N content. Nitrogen analysis on the soil and leaf samples were made in the Soil and Plant Analyical Laboratory, at the University of Nebraska, Lincoln, USA. Data were analyzed as a split-split-plot with analysis of variance (ANOVA), using the General Linear Model procedures of the Statistical Analysis System. The nitrogen content of the leaf tissue is variable in creeping bentgrass fairway turf with clip-ping recycles, nitrogen application rate and time after establishment. Leaf tissue nitrogen content increased with clipping return and nitrogen rate. Plots treated with clipping return had 8% and 5% more nitrogen content in the leaf tissue in 1989 and 1990, respectively, as compared to plots treated with clipping removal. Plots applied with high-N level (25g N $m-^2$ $yr-^1$)had 10%, 17%, and 13% more nitrogen content in leaf tissue in 1989, 1990, and 1991, respectively, when compared with plots applied with low-N level (5g N $m-^2$ $yr-^1$). Overall observations during the study indicated that leaf tissue nitrogen content increased at any nitrogen rate with time after establishment. At the low-N level treatment (5g N $m-^2$ $yr-^1$ ), plots sampled in 1991 had 15% more leaf nitrogen content, as compared to plots sampled in 1989. Similar responses were also found from the high-N level treatment (25g N $m-^2$ $yr-^1$ ).Plots analyzed in 1991 were 18% higher than that of plots analyzed in 1989. No significant treatment effects were observed for soil nitrogen content over the first 3 years after establishment. Strategic management application is necessary for the golf course turf, depending on whether clippings return or not. Different approaches should be addressed to turf fertilization program from a standpoint of clipping recycles. It is recommended that regular analysis of the soil and leaf tissue of golf course turf must be made and fertilization program should be developed through the interpretation of its analytic data result. In golf courses where clippings are recycled, the fertilization program need to be adjusted, being 20% to 30% less nitrogen input over the clipping-removed areas. Key words: Agrostis palustris Huds., 'Penncross' creeping bentgrass fairway, Irrigation frequency, Clipping return, Nitrogen rate, Leaf nitrogen content, Soil nitrogen content.

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Effect of Nitrogen Split Application Methods under Different Soil Textures on Growth and Yield of Rice in Direct Seeding on Dry Paddy (벼 건답직파재배에서 토성별 질소분시방법이 생육에 수량에 미치는 영향)

  • Kim, Chung-Kon;Yun, Yong-Dae;Yang, Won-Ha;Oh, Yun-Jin
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.40 no.6
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    • pp.731-737
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    • 1995
  • This experiment was carried out at National Crop Experiment Station in 1994 to obtain basic information of growth characters and yield of rice under various nitrogen split application methods on different soil textures in direct seeding on dry paddy. Hwaseongbyeo sown on April 27 by flat drill seeding, and irrigation was done at 3 leaf stage after seedling establishment. Number of seedling stand was 159~177 seedlings per $m^2$ regardless of soil texture and nitrogen application method. Number of panicle per unit area in loam was higher than in sandy loam, and it also was higher in top dressing plots, which were 3 times application at rate of 40-30-30% (3rd leaf stage -7th leaf stage -panicle initiation stage) and 4 times application 10-30-30-30%(basal-3rd leaf stage -7th leaf stage -panicle initiation stage), than in conventional method. Leaf colour, leaf area index and dry matter production at heading stage were highest at top dressing plots among the nitrogen application methods in both sandy loam and loam. Lodging index in top dressing plots increased by low breaking weight with long culm. There were field lodging of degree 3 in top dressing plots. Rice yield in sandy loam, loam increased by 7~9%, 6~9% in top dressing of nitrogen, respectively.

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Effect of Split Application of Nitrogen Fertilizer on Growth and Yield in Platycodon grandiflorum A. DC. (질소 분시 비율에 따른 도라지의 생육 및 수량)

  • Seong, Jae-Duck;Kim, Geum-Soog;Kim, Hyun-Tae;Park, Chung-Berm;Kim, Seong-Man
    • Korean Journal of Medicinal Crop Science
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    • v.12 no.6
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    • pp.437-441
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    • 2004
  • These studies were conducted to investigate the proper method of nitrogen application for increasing the growth stability and quality in ballon flower (Platycodon grandiflorum A. DC.). In growth characteristics by split ratio of nitrogen application, stem diameter, number of branching roots and number of leaves were higher at the split ratio of 50:50 (nitrogen were splitted a half with basal application and the other half in autumn) than at 70:30. Root length, root diameter and number of branching root were higher at 50:50 than those of 70:30. The root yield was increased by 30% (230 kg/10a) at 50:50 compared with that of the 70:30. The crude saponin contents of root from 50:50 was 4.68%.