Analysis of trace dicyandiamide in stream water using solid phase extraction and liquid chromatography UV spectrometry

Hui-dong, Qiu; Sun, Dongdi; Gunatilake, Sameera R.; She, Jinyan; Mlsna, Todd

doi:10.1016/j.jes.2015.02.010

Cited by 23 publications

(11 citation statements)

References 16 publications

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“…In agricultural systems, these inhibitors can effectively reduce N loss and enhance NUE of crops; environmentally, they are able to control nitrate leaching to water bodies and N 2 O emissions to the atmosphere (Zaman et al, 2009;Abalos et al, 2014;Huang et al, 2014;Sun et al, 2015). The use of these synthetic inhibitors, however, has been restricted because of their high cost, lack of availability, inconvenience of application and the potential for environmental contamination; in particular, water-soluble inhibitors can lead to significant surface and below-ground water contamination (Qiu et al, 2015). The application of DCD, for instance, is limited because very high DCD concentrations are needed to achieve the desired results.…”

Section: Introductionmentioning

confidence: 99%

Biological nitrification inhibition by rice root exudates and its relationship with nitrogen‐use efficiency

Sun

et al. 2016

New Phytologist

181

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Microbial nitrification in soils is a major contributor to nitrogen (N) loss in agricultural systems. Some plants can secrete organic substances that act as biological nitrification inhibitors (BNIs), and a small number of BNIs have been identified and characterized. However, virtually no research has focused on the important food crop, rice (Oryza sativa). Here, 19 rice varieties were explored for BNI potential on the key nitrifying bacterium Nitrosomonas europaea. Exudates from both indica and japonica genotypes were found to possess strong BNI potential. Older seedlings had higher BNI abilities than younger ones; Zhongjiu25 (ZJ25) and Wuyunjing7 (WYJ7) were the most effective genotypes among indica and japonica varieties, respectively. A new nitrification inhibitor, 1,9-decanediol, was identified, shown to block the ammonia monooxygenase (AMO) pathway of ammonia oxidation and to possess an 80% effective dose (ED ) of 90 ng μl . Plant N-use efficiency (NUE) was determined using a N-labeling method. Correlation analyses indicated that both BNI abilities and 1,9-decanediol amounts of root exudates were positively correlated with plant ammonium-use efficiency and ammonium preference. These findings provide important new insights into the plant-bacterial interactions involved in the soil N cycle, and improve our understanding of the BNI capacity of rice in the context of NUE.

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Section: Introductionmentioning

confidence: 99%

Biological nitrification inhibition by rice root exudates and its relationship with nitrogen‐use efficiency

Sun

et al. 2016

New Phytologist

181

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“…Urease inhibitors have been investigated for about 60 years and hundreds of compounds have been identified, having excellent potential to improve N use efficiency, including N-butyl-thiophosphoric triamide (NBPT), hydroquinone (HQ), and phenylphosphorodiamidate (PPD) [6]. The use of synthesized urease inhibitors has been restricted due to high costs, availability issues, and harmful effects on beneficial soil microorganisms, resulting in only a few compounds being suitable for general use in agricultural production [7]. For example, storage time can affect NBPT efficiency, as well as high temperatures, soil acidity, and the presence of water [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Potential of Chamomile recutita Plant Material to Inhibit Urease Activity and Reduce NH3 Volatilization in Two Agricultural Soils

Wang

Luo

et al. 2021

Atmosphere

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The large amount of ammonia released during agricultural application of urea fertilizer can result in a partial loss of applied nitrogen, having a detrimental effect on air quality. Although Chamomile recutita has nitrogen transformation inhibitory properties, providing potential agricultural and environmental benefits, the full extent of the effects of the major constituents of this plant on urease activity and NH3 volatilization in soils is currently unknown. Soil incubation experiments were established using 2-Cyclopenten-1-one and Eugenol, two major constituents of C. recutita, to evaluate their effects on inorganic soil nitrogen pools, urease activity, and NH3 volatilization in grey desert soil and red soil. An application rate of 0.25 g N kg−1 soil fertilizer was applied as urea with and without additives. An unfertilized treatment was also included as a control. In order to compare results, N(butyl) thiophosphoric triamide (NBPT), a common synthetic urease inhibitor, was also used. NBPT, 2-Cyclopenten-1-one and Eugenol were applied at a rate of 0.00125 g kg−1 soil (equivalent to 0.5% N). The results indicated that the rate of urea hydrolysis was higher in grey desert soil compared to red soil. Soil in the urea-only treatments recorded urea hydrolysis to be almost complete within seven days of application. The rate of hydrolysis was inhibited by the two natural compounds, and higher concentrations of urea were maintained for more than two weeks. Soil amended with the two materials exhibited strong soil urease inhibition in both soil treatments (75.1% in the alkaline grey desert soil and 72.8% in the acidic red soil). The strongest inhibitory effect occurred one to three days after incubation in the Eugenol treatment. Moreover, the inhibitory effects of Cyclopenten-1-one and Eugenol were superior to that of NBPT in the two soils. Cyclopenten-1-one and Eugenol also significantly reduced soil NH3 emissions by 14.2 to 45.3%, especially in the acidic red soil. Molecular docking studies confirmed inhibition mechanisms, highlighting that natural compounds interacted with the amino acid residues of the urease active center. This action resulted in the urease active pocket being blocked, thereby inhibiting enzyme activity. Overall, our findings suggest that 2-Cyclopenten-1-one and Eugenol are both capable of hindering urease activity and reducing the risk of N loss in the two tested soils. Results highlight their applicability as urease inhibitors and their effect in delaying the release of ammonia nitrogen, thereby increasing fertilizer N use efficiency. However, in order to fully assess N use efficiency and the N balance due to the presence of Chamomile extract in soil-crop systems, further field scale investigations are required.

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“…Furthermore, their use is also limited because a large amount is required to achieve the satisfactory results ( Sun et al., 2016). On the other hand, the water‐soluble synthetic inhibitors are reported to cause water contamination ( Qiu et al., 2015; Cahalan et al., 2015). Woodward et al.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of selected medicinal plant materials and dicyandiamide on nitrification of urea‐derived ammonium under laboratory conditions

Tahir

Begum

Maqbool

et al. 2020

J. Plant Nutr. Soil Sci.

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Background: Poor utilization of urea fertilizer and N losses from agriculture lands demands alternate fertilization practices to reduce N losses and improve utilization, i.e., application of nitrification inhibitors. Aims: This study was aimed to evaluate and compare the influence of dicyandiamide (DCD) and selected medicinal plant materials and on N transformations, nitrification inhibition and recovery of applied N. Methods: Treatments included: urea nitrogen (UN), UN + DCD, UN + Gingiber officinale, UN + Viola odorata, UN + Sewertia chirata, UN + Azadirachta indica, UN + Sphaenathus indicus, UN + Allium sativus, UN + Artemisia absenthium, UN + Fumaria indicus, UN + Caesalpinea bondusella, UN + Barberis lyceum, and an un‐amended control. Urea was applied at 200 mg N kg−1 soil, while DCD and medicinal plant materials were applied at of 1% and 20% of applied urea, respectively. Results: Medicinal plant materials inhibited nitrification of urea‐derived NH4 + - N. On an average of medicinal plant materials treatments, 51% of NH4 + - N was still present in soil compared to 17% NH4 + - N in UN treatment without medicinal plant materials after 28 days. Similarly, NO3 - - N was 76.54 mg kg−1 in UN treatment compared to 34.40 mg kg−1 in UN + medicinal plant materials treatments, indicating 55% reduction in nitrification. Apparent nitrogen recovery (ANR) in UN treatment was 65% compared to 74% in UN + DCD treatment. ANR in treatments, where UN was amended with medicinal plant materials, varied between 58 to 70%. Conclusions: The use of DCD and medicinal plant materials with UN significantly reduced NH4 + - N oxidation and nitrification ( NO3 - - N). In general, medicinal plant materials were more effective in regulating N transformations and, thus, offer a suitable alternate fertilization practice to reduce N losses and improve fertilizer utilization.

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Analysis of trace dicyandiamide in stream water using solid phase extraction and liquid chromatography UV spectrometry

Cited by 23 publications

References 16 publications

Biological nitrification inhibition by rice root exudates and its relationship with nitrogen‐use efficiency

Biological nitrification inhibition by rice root exudates and its relationship with nitrogen‐use efficiency

Potential of Chamomile recutita Plant Material to Inhibit Urease Activity and Reduce NH3 Volatilization in Two Agricultural Soils

Evaluation of selected medicinal plant materials and dicyandiamide on nitrification of urea‐derived ammonium under laboratory conditions

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