Effect of No‐Till Practice on Runoff and Nonpoint Source Pollution from an Intensively Farmed Field in Korea

Choi, Yonghun; Won, Chul-Hee; Shin, Min-Hwan; Park, Woon-Ji; Lee, Suin; Shin, Youngsoo; Shin, Jung Won

doi:10.1002/ird.2072

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…Although conservation tillage practices aimed at decreasing sediment‐bound P losses from agriculture have been widely adopted (Dodd and Sharpley, 2016), the effects of different tillage approaches on P losses are inconsistent. A number of studies have evaluated the effects of tillage on P losses, with most research demonstrating that conservation tillage reduces P losses in surface runoff relative to conventional tillage due to lower soil erosion rates (McDowell and McGregor, 1984; Andraski et al, 1985; Seta et al, 1993; Gaynor and Findlay, 1995; Puustinen et al, 2005; He et al, 2006; Franklin et al, 2007; Ulén et al, 2010; Coelho et al, 2012; Choi et al, 2016; Cherobim et al, 2017). Other studies have found that conservation tillage decreases runoff volume compared with conventional tillage, which can be an important factor in reducing P losses, as runoff volumes can heavily influence cumulative P loads, even when P concentrations are low (Blevins et al, 1990; Seta et al, 1993; Maetens et al, 2012; Smith and Warnemuende‐Pappas, 2015).…”

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confidence: 99%

Tillage and Fertilizer Management Effects on Phosphorus Runoff from Minimal Slope Fields

et al. 2018

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Phosphorus fertilization can increase P losses in surface runoff, but limited information is available for fields with <2% slopes in the US Midwest. Our objectives were to determine the effects of tillage-fertilizer placement (no-till-broadcast, strip till-broadcast; or strip till-deep placement, -15-cm subsurface band) and fertilizer rate applied in the fall (0, 52, or 90 kg PO ha yr) on runoff P concentrations and loads in fields with <2% slopes near Pesotum, IL, during fall and spring simulation runoff events, and to measure corn ( L.) and soybean [ (L.) Merr.] grain yield. Across four simulated runoff events, deep placement reduced dissolved reactive P (DRP) loads by 69 to 72% compared with the broadcast treatments. A tillage-fertilizer placement × P rate interaction showed that DRP and total P (TP) concentrations remained low when P was deep placed, regardless of P rate, whereas concentrations increased with increasing P rate for the broadcast treatments, but no differences existed for bioavailable P (BAP) (α = 0.05). At one site, rainfall simulation in the spring versus fall increased runoff volumes but sharply decreased BAP concentrations. During fall runoff simulations, deep placement reduced TP loads, and greater TP loads occurred with the 90- than the 52-kg PO ha yr rate. Similarly, when P was broadcast in the fall, DRP and TP concentrations were greater than deep-placed P, but no treatment differences occurred in the spring. Deep banding P and K did not reduce crop yield but reduced runoff losses of P from flat fields compared with broadcast P applications, particularly at high rates of P application.

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confidence: 99%

Tillage and Fertilizer Management Effects on Phosphorus Runoff from Minimal Slope Fields

et al. 2018

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“…강우에 따른 밭 토양 유실과 비점오염물질 유출은 연 중 발생할 수 있으나, 밭작물의 2~3모작을 고려할 때, 특히 토 양이 일정기간 나지상태로 노출되는 작기(전작물과 후작물 재 배의 사이)의 토양유실과 오염물질 유출 위험성이 증대될 수 있다. 이 간작기는 인공습지⋅침사지 등 일부를 제외한 대다 수의 구조적⋅비구조적 최적관리기법 (Choi et al, 2016;Jang et al, 2017;Lee et al, 2015;Shin et al, 2013;Shin et al, 2012)의 적용이 곤란한 시기이다. 따라서 대부분의 농경 지는 다음 작물재배 시기까지 방치된 상태로 경과하게 된다.…”

Section: Research Article-soil Environmentunclassified

The Performances of Sediment Trap for Reducing Water Pollutants and Soil Loss from Rainfall Runoff in Cropland

Park¹,

Park²,

Kim³

2019

Korean Journal of Environmental Agriculture

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BACKGROUND: An intensive farming system may be of the most important source for agricultural non-point source (NPS) pollution, which is a major concern for agricultural water management in South Korea. Various management practices have therefore been applied to reduce NPS loads from upland fields. This study presents performances of sediment trap for reducing NPS and soil loss from rainfall runoff in cropland. METHODS AND RESULTS: In 2018 and 2019, three sediment traps (L1.5 m × W1.0 m × D0.5 m = 0.75 m 3 ) and their controls were established in the end of sloped (ca. 3%) upland field planted with maize crops. Over the seasons, runoff water was monitored, collected, and analyzed at every runoff. Soils deposited in sediment traps were collected and weighed at the season end. Sediment traps reduced runoff amount (p<0.05) and NPS concentrations, though the decreased NPS concentrations were not always statistically significant. In addition, sediment traps had a significant prevention effect on soil loss from rainfall runoff in a sloped cropland. CONCLUSION: The results suggest that the sediment trap could be a powerful and the best management practice to reduce NPS pollution and soil loss in a sloped upland field.

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“…Soil erosion and nutrient loss studies using runoff plots have been more effectively utilized in China, the United States and Europe [20][21][22]. Runoff plots were used to explore the effects of no-till practices on reducing agricultural nonpoint source pollution [23] and the effects of variable versus uniform fertilizer application on nutrient loss [24]. The variables in runoff plots are easier to control than in small watersheds.…”

Section: Introductionmentioning

confidence: 99%

Study on characteristics of soil and nutrient losses in Sunjiagou small watershed in cold black soil area

Dai

Wang

et al. 2023

PLoS ONE

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Investigating the impact of different factors on soil and nutrient loss and suggesting viable control measures is currently a significant concern. This study aims to examine the variations in soil erosion, as well as nitrogen and phosphorus loss, in the core area of the typical hilly diffuse Blackland erosion control. To achieve this, runoff plots with slopes of 3° and 5° were set up in the Sunjiagou sub-basin, located in the upper reaches of the Feiketu River. These plots were subjected to various soil and water conservation measures, along with different levels of vegetation cover. This study aims to analyze the soil and nutrient loss patterns and characteristics in each runoff plot during the natural rainfall events occurring between 2020 and 2022. The results show that soil and nutrient losses are highly significantly and positively correlated with rainfall intensity. The RUSLE model demonstrates a better fit for both cross ridge tillage and bare ground. The loss of nitrogen was much more significant than that of phosphorus, and nitrate nitrogen is the main form of nitrogen loss. Nitrogen loss is mainly dominated by nitrate nitrogen (NN), which is easily soluble in water and constantly migrates with runoff due to the negatively charged NN (NN accounted for 45.2% ~ 81.8% of total nitrogen (TN)). In contrast, the positively charged ammonia nitrogen (AN) is more stable in combination with the soil; large losses only occur under severe sediment erosion. Phosphorus is easily attached to sediment, and the high sediment production leads to a more serious loss of total phosphorus (PP) in the particulate state (PP accounts for 72.7% ~ 96.2% of total phosphorus (TP)). Changing longitudinal ridge tillage to cross ridge tillage and planting vegetation with better water retention and sediment fixation as plant hedges can effectively prevent the loss of soil, runoff, nitrogen, and phosphorus.

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Effect of No‐Till Practice on Runoff and Nonpoint Source Pollution from an Intensively Farmed Field in Korea

Cited by 7 publications

References 16 publications

Tillage and Fertilizer Management Effects on Phosphorus Runoff from Minimal Slope Fields

Tillage and Fertilizer Management Effects on Phosphorus Runoff from Minimal Slope Fields

The Performances of Sediment Trap for Reducing Water Pollutants and Soil Loss from Rainfall Runoff in Cropland

Study on characteristics of soil and nutrient losses in Sunjiagou small watershed in cold black soil area

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