Nutrient runoff from a Korean rice paddy watershed during multiple storm events in the growing season

Kim, Jin S.; Oh, Seung Young; Oh, Kwang Y.

doi:10.1016/j.jhydrol.2005.11.062

Cited by 110 publications

(47 citation statements)

References 15 publications

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“…Increase in P accumulation enhances a potential loss of P through soil erosion and/or leaching in paddy rice field (e.g. Zhang et al, 2003;Shan et al, 2005;Kim et al, 2006;Ooya et al, 2007) as well as in the other agricultural land (Sharpley et al, 2001;Hart et al, 2004). Almost all of the P resource in Japan is imported, and the source may be depleted in the near future.…”

mentioning

confidence: 99%

Phosphorus Balance and Soil Phosphorus Status in Paddy Rice Fields with Various Fertilizer Practices

Nagumo

Tajima

Chikushi

et al. 2013

Plant Production Science

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Excess phosphorus (P) has accumulated in Japanese paddy soils, due to fertilizer P inputs over crop requirement for several decades, and improvement of the excess of P is necessary in view of environmental conservation. This study aimed to evaluate the input/output balance of P related to soil P status in paddy rice systems, and to obtain a practical indication. , indicating no response to the P input. This was attributed to a large amount of plant-available Bray-and Truog-P in our soils. In our fields, paddy rice could be cultivated with no P-containing fertilizer or amendment. As a result, increase in the P input led to an increase in partial P balance (PPB). Cumulative increase in PPB resulted in the increase in soil total P, whereas cumulative decrease of PPB tended to decrease it. Excess accumulation of the soil P results in a loss of P into the environment. We concluded that P fertilization should be restricted to 20 kg ha -1 yr -1 (corresponding to 46 kg ha -1 yr -1 as P 2 O 5 ), based on evenly balanced P input with the rice P uptake. It is also important to include all of the P-containing fertilizers and amendments when determining the amount of application.

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mentioning

confidence: 99%

Phosphorus Balance and Soil Phosphorus Status in Paddy Rice Fields with Various Fertilizer Practices

Nagumo

Tajima

Chikushi

et al. 2013

Plant Production Science

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“…-1 ----------kg ha -1 ----- (Kang et al, 2010;Song et al, 2012;Yoon et al, 2003 (Kim et al, 2006;Lee et al, 2014;Somura et al, 2009). 이와 같이 농업에서 발생되는 오염원은 주변 하천이 나 호소에 비점오염원으로 작용할 수 있다 Kim et al, 2005a;Kim et al, 2005b;Song et al, 2013 Table 3.…”

Section: T-n T-p T-n T-p -----Kg Haunclassified

Response of Nutrient Dynamics with Topography during the Rice Cultivation in Paddy Field

Kim¹,

Choi²,

Kim³

et al. 2016

Korean Journal of Soil Science and Fertilizer

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This study aimed to evaluate the nutrient load balance from rice paddy fields with different topographies, alluvial plain and local valley. Continuous monitoring from May to September, 2013 was conducted for water quantification and qualification from alluvial plain in Yeoju region (32 ha) and local valley in Jincheon region (24 ha). The discharge rates of T-N from the alluvial plain were 57.2, 5.84, 22.7, and 5.20 kg ha -1 for irrigation, precipitation, drainage, and percolation, respectively. In case of local valley, T-N loads were 34.6, 4.73, 21.1, and 4.15 kg ha -1 for irrigation, precipitation, drainage, and percolation, respectively. In contrary, the T-P loads from the alluvial plain were 2.23, 2.22, 2.54, and 0.41 kg ha -1 for irrigation, precipitation, drainage, and percolation, respectively. In case of local valley, T-P loads were 1.44, 1.57, 1.82, and 0.34 kg ha -1 for irrigation, precipitation, drainage, and percolation, respectively. The nutrient contents in drainage water were influenced by the amount of waters, rainfall, and surface drainage water. The Pearson correlation analysis showed that rainfall was significantly correlated with nutrient loads from July to August due to the amount of runoff in local valley paddy field, and irrigation was related with nutrient loads of drainage from July to August. This study showed that paddy rice farming in alluvial plain and local valley might be beneficial to water quality protection.

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“…Thus, an understanding of the runoff characteristics of pollutants from a given watersheds is necessary for appropriate control measure to assist policy strategies and water resource managements (Gentry et al, 2007). In most agricultural watersheds, phosphorus transport mainly occurred in surface runoff and soil erosion (Kim et al, 2006), while nitrogen transport pathways are considered to be different from those of phosphorus. In this study, NPS contribution was investigated based on flow rates and water qualities of streams into the lake during rainfall event.…”

Section: Control Of Non-point Source(nps) Is a Recent Issuementioning

confidence: 99%

Contribution of Non-Point Pollution to Water Quality and Runoff Characteristics from Agricultural Area of the Upstream Watersheds of Lake Chinyang

Lee¹,

Jang²

2013

Journal of Environmental Science International

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In this study, non-point source(NPS) contribution was investigated based on flow rates and water qualities of streams into the lake during rainfall events. Event mean concentration(EMC) and the pollution loads were calculated to establish a database for NPS control measurement in the survey area, and so on. The runoff characteristics of NPS were investigated and estimated on the basis of the ratio of an agricultural to forest area in the stream of sub-catch basin during rainfall events. Non-point source pollution loads were also calculated to establish a database for NPS control measure in the upstream lake Chinyang. At a rainfall event, BOD concentrations rise sharply at the early peak time of runoff, however, peaks of TSS concentration were observed at the similar time of peak flow. This was a phenomenon shown at the watersheds caused by forest and geological types. The discharged EMC range was 2.9-4.8 mg/L in terms of BOD. The discharged EMC range was 6.2-8.2 mg/L in terms of SS. The discharged EMCs of T-N and T-P were 1.4-2.5 mg/L and 0.059-0.233 mg/L, respectively. Total BOD loading rate through the 3 tributaries to the lake Chinyang was 1,136 kg/d during dry weather. The upper watershed area of the Nam-river dam in this study was divided into 14 catchment basins based on the Korean guideline for total maximum daily load(TMDL) of water quality pollutants. The higher the agricultural land-use ratio, the more NPS loading rate discharged, but the more occupied a forest area, the lower more NPS loading rate discharged. In an agricultural land-use area more than 20%, the increase of NPS loadings might be dramatically diffused by increasing the integrated complex-use like vinyl-house facilities and fertilizer use etc. according to the effective land-use utilization. The NPS loading rates were BOD 0.3 kg/ha․day, SS 0.21 kg/ha․day, TN 0.02 kg/ha․day, TP 0.005 kg/ha․day under less than 10% agricultural land-use. In agricultural land-use of 20%-50%, these values were investigated in the range of 0.32 kg/ha․day-0.73 kg/ha․day for BOD, 0.92 kg/ha․day-3.32 kg/ha․day for SS, 0.70 kg/ha․day-0.90 kg/ha․day TN, 0.03 kg/ha․day-0.044 kg/ha․day for TP.

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Nutrient runoff from a Korean rice paddy watershed during multiple storm events in the growing season

Cited by 110 publications

References 15 publications

Phosphorus Balance and Soil Phosphorus Status in Paddy Rice Fields with Various Fertilizer Practices

Phosphorus Balance and Soil Phosphorus Status in Paddy Rice Fields with Various Fertilizer Practices

Response of Nutrient Dynamics with Topography during the Rice Cultivation in Paddy Field

Contribution of Non-Point Pollution to Water Quality and Runoff Characteristics from Agricultural Area of the Upstream Watersheds of Lake Chinyang

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