Total Nitrogen Losses from Fertilized Turfs on Simulated Highway Slopes in Florida

Kakuturu, Sai Prasad; Chopra, Manoj; Hardin, Mike; Wanielista, Martin P.

doi:10.1061/(asce)ee.1943-7870.0000690

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…In recent decades, a great deal of research concerning the influence of rainfall and terrain on NPS nitrogen pollution has been carried out worldwide [24][25][26]. A comparative study of the effects of rainfall events on the removal of NPS nitrogen determined the efficiency ratio indexes, load summation and load regression in the Kyeong-a stream basin, South Korea [27].…”

Section: Introductionmentioning

confidence: 99%

Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Ding

Xue

et al. 2017

Water

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Abstract:The upper reach of the Yangtze River is an ecologically sensitive region where water loss, soil erosion, and nonpoint source (NPS) pollution are serious issues. In this drainage area, regosol is the most widely distributed soil type. Cultivation on regosol is extensive and total nitrogen (TN) has become a common NPS pollutant. Artificial rainfall experiments were conducted to reveal the influence mechanisms of rainfall and terrain on TN losses from regosol. The results showed that there were positive correlations between precipitations and TN loads but negative ones between precipitations and TN concentrations. Furthermore, negative correlations were more obvious on fields with slopes of 5 • and 25 • than on other slopes. With increasing rainfall intensity, TN loads rose simultaneously. However, TN concentration in runoff-yielding time presented a decline over time. As far as terrain was concerned, TN loads grew generally but not limitlessly when slopes increased. Similarly, TN concentrations also rose with rising slopes; upward trends were more obvious for steeper slopes. Furthermore, the initial runoff-yielding time became longer for steeper slopes and the differences under various rainfall intensity conditions diminished gradually.

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Section: Introductionmentioning

confidence: 99%

Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Ding

Xue

et al. 2017

Water

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“…It is used in the formation of nucleic acids (including DNA and RNA), ATP, and phospholipids. The more soluble a nutrient is, the easier it gets drawn into the plant [12]. Typically, nitrogen and phosphorous have a ratio of 8:1 in soil, but as more phosphorous is added to an area, environmental harm is just as extensive as when the nitrogen cycle is disrupted because phosphorous is the primary driver of eutrophication [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of herbicide and fertilizer on wheat and weed at seeds sprouting

Khan

2024

PAB

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The research was conducted at the experimental field, Southwest University of Science and Technology in three experimental phases; (1) Field trials were carried out in a Randomized Complete Blocked Design. The chemical compounds, nitrogen, phosphorus and potassium concentrations (N: P: K; 24:8:8) were applied to the xikamai-18 cultivar. Stellaria medium grew more than ordinary chickweed with NPK treatment. (2) Glasshouse trials were carried out single fertilizer of N (blank, 0.062, 0.070, 0.78 and 0.086g plant -1 ); P (blank, 0.079, 0.089, 0.099 and 0.108g plant -1 ) and K (blank, 0.018, 0.020, 0.023 and 0.025g plant -1 ), and the results were shown the effect of N on shoot and root growth in wheat T3. Moreover, the same treatment was decreased in weed. The growth of shoot and root in wheat T2 was affected using P treatment and also same treatment was decreased in weed. K treatment was affected on the growth of shoot and root in wheat T3, and same treatment decreased weed. (3) The Clodinafop-propargyl 0.05; 0.1; 0.2 and 0.3%/100ml, and Starane applied at 0.025, 0.05, 0.1 and 0.2g/100ml concentration were applied for seed germination with same experiments. Herbicide Clodinafop-propargyl was affected more in T2, and herbicide Starane in T3 on weeds. The physiological (Length, number and diameter of shoot and root), and biochemical (POD) parameters were measured. POD enzyme showed more activity in N: P: K fertilizers in T-4. It showed that (Starane and fertilizer concentration (N, P, K) 3.91g/m 2 , 4.455g/m 2 and 1.155g/m 2 ) resulted in optimum wheat physiological growth.

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“…It is reported that China consumed 30% of the chemical nitrogen fertilizer around the world, while the nitrogen use efficiency (NUE) in China (25%) was much lower than those in European (52%) and North American countries ( Ke et al., 2016 ). Consequently, plenty of adverse effects appeared when the nitrogen fertilizer was overused, including reduced NUE, increased greenhouse gas emission, accelerated soil acidification, and aggregated water pollution ( Kim et al., 2005 ; Ju et al., 2009 ; Kakuturu et al., 2013 ; Liu et al., 2013 ; Huang et al., 2017 ). Therefore, many studies were conducted in paddy fields to improve the NUE and reduce the adverse environmental effects aroused by nitrogen fertilizer application without reducing the paddy grain yield at the same time ( Shcherbak et al., 2014 ; Xu et al., 2014a ; Zhang et al., 2016 ; He et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Controlled-release urea application and optimized nitrogen applied strategy reduced nitrogen leaching and maintained grain yield of paddy fields in Northwest China

Liu

Wang²,

Yang³

et al. 2023

Front. Plant Sci.

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Nitrogen loss from paddy fields contributes to most of the nitrogen pollution load in the Ningxia Yellow River irrigation area, threatening the water quality of the Yellow River. Consequently, optimizing the nitrogen management practices in this area is essential, which can maintain paddy grain productivity and reduce nitrogen loss simultaneously. Five treatments with different nitrogen application rates and nitrogen fertilizer types were set in this study, including conventional urea application with zero nitrogen application rate (CK, 0 kg hm-2), nitrogen expert-based fertilization application strategy (NE, 210 kg hm-2), optimized nitrogen fertilizer application strategy recommended by local government (OPT, 240 kg hm-2), and farmer’s experience-based nitrogen fertilizer application strategy (FP, 300 kg hm-2), and controlled-release urea application (CRU, 180 kg hm-2). The data from one growth season field experiment in 2021 revealed the dynamics of nitrogen concentration, paddy yield and its nitrogen uptake characteristic, and nitrogen balance in the paddy field under different nitrogen application practices. Most nitrogen leaching was observed during the seedling and tillering stages in the form of nitrate nitrogen (NO3–N). Compared with the FP, the CRU and OPT significantly reduced the nitrogen concentrations of total nitrogen (TN), ammonium nitrogen (NH4+-N), and NO3–N in the surface and soil water and reduced the nitrogen leaching at 100 cm soil depth. Meanwhile, the paddy grain yield in CRU (7737 kg hm-2) and OPT (7379 kg hm-2) was not significantly decreased compared with FP (7918 kg hm-2), even though the nitrogen uptake by grain and straw was higher in FP (135 kg hm-2) than in other treatments (52.10~126.40 kg hm-2). However, the grain yield in NE (6972 kg hm-2) was decreased compared with the FP. The differences in grain yield among these treatments were mainly attributed to the ear number and grain number changes. Also, the highest nitrogen use efficiency (40.14%), apparent nitrogen efficiency (19.53 kg kg-1), and nitrogen partial productivity (43.98 kg kg-1) were identified in CRU than in other treatments. Considering increased grain yield and reducing nitrogen loss in the paddy field simultaneously, the treatments of CRU (i.e., 180 kg hm-2 nitrogen application rate with controlled-release urea) and OPT (i.e., 240 kg hm-2 nitrogen application rate with conventional urea) were recommended for nitrogen fertilizer application in the study area.

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Total Nitrogen Losses from Fertilized Turfs on Simulated Highway Slopes in Florida

Cited by 4 publications

References 24 publications

Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Influence Mechanisms of Rainfall and Terrain Characteristics on Total Nitrogen Losses from Regosol

Effect of herbicide and fertilizer on wheat and weed at seeds sprouting

Controlled-release urea application and optimized nitrogen applied strategy reduced nitrogen leaching and maintained grain yield of paddy fields in Northwest China

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