Methane emission from a simulated rice field ecosystem as influenced by hydroquinone and dicyandiamide

Xu, Xingkai; Wang, Yuesi; Zheng, Xunhua; Wang, Mingxing; Wang, Zijian; Zhou, Liqin; Cleemput, Oswald Van

doi:10.1016/s0048-9697(00)00712-9

Cited by 25 publications

(15 citation statements)

References 25 publications

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“…During the first 30 days of the growing season the N 2 O emission decreased steadily, but markedly increased 50 days after fertilization. It is suggested that due to the decomposition of the wheat straw and the remineralization of newly immobilized N, the NH 4 + concentration in the floodwater of all treatments reached a maximum after 30 days (data not shown, see Xu et al 2000a). Nitrification and subsequent denitrification of this N in the surface soil layers or in the floodwater would induce the pronounced N 2 O emission.…”

Section: Rice Cropping Systemmentioning

confidence: 97%

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Mitigation of N2O and CH4 Emission from Rice and Wheat Cropping Systems Using Dicyandiamide and Hydroquinone

Boeckx

Cleemput

2005

Nutr Cycl Agroecosyst

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Agriculture contributes considerably to the emission of greenhouse gases, such as N 2 O and CH 4 . Here we summarize results from previous pot experiments assessing the effectiveness of urease and nitrification inhibitors reducing both N 2 O and CH 4 emissions from wheat and rice cropping systems fertilized with urea (U). For the wheat cropping system, using a cambisol, we observed that the application of U with hydroquinone (HQ, a urease inhibitor), U with dicyandiamide (DCD, a nitrification inhibitor) and U with HQ plus DCD decreased the N 2 O emissions by 11.4, 22.3 and 25.1%, respectively. For the rice copping system, using a luvisol, we found that the application of U with HQ, U with DCD and U with HQ plus DCD decreased N 2 O emissions by 10.6, 47.0 and 62.3%, respectively, and CH 4 emissions by 30.1, 53.1 and 58.3%, respectively. In terms of total global warming potential (GWP) a reduction of 61.2% could be realized via the combined addition of HQ and DCD. The addition of wheat straw reduced the activity of HQ and DCD in the rice cropping experiments. In terms of total GWP only a reduction of 30.7% could be achieved. In general, both in upland and flooded conditions, the application of HQ and DCD alone was less effective than HQ in combination with DCD, but not significantly for U plus DCD treatment. Our observations may be further constrained, however, by practical, economic or social problems and should therefore be tested at the scale of a region (e.g. a watershed) and related to an integrated abatement of agricultural N losses.

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Section: Rice Cropping Systemmentioning

confidence: 97%

“…Xu et al 2000aXu et al , 2002a. The cumulative N 2 O emissions from the different treatments of the rice cropping system are presented in Table 2.…”

Section: Rice Cropping Systemmentioning

confidence: 99%

Mitigation of N2O and CH4 Emission from Rice and Wheat Cropping Systems Using Dicyandiamide and Hydroquinone

Boeckx

Cleemput

2005

Nutr Cycl Agroecosyst

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“…Urease inhibitors affected CH 4 emission by the positive effect on the redox potential of the rhizosphere and biomass production of rice. DCD, especially in combination with HQ, significantly enhanced CH 4 oxidation in the rice root rhizosphere, particularly between its tillering and booting stages and reduced CH 4 emission profoundly (Xu et al 2000a). The presence of a more highly oxidized rhizosphere would result in a reduction of CH 4 emission from rice field to the atmosphere (Denier Van der Gon and Neue 1996).…”

Section: Yearsmentioning

confidence: 98%

“…However, there are conflicting reports regarding the influence of urease and nitrification inhibitors on CH 4 emission (Cai et al 1994;Xu et al 2000a;Malla et al 2005) and the mechanism of urease inhibitors and nitrification inhibitors on CH 4 emission needs to be considered from three different levels.…”

Section: Yearsmentioning

confidence: 99%

“…Urease inhibitor hydroquinone and nitrification inhibitor dicyandiamide are a pair that has currently been attracting more and more attention from researchers in this field. It indicated that DCD alone or in combination with HQ, could substantially reduce CH 4 and N 2 O emissions during rice growth season (Xu et al 2000a(Xu et al , 2002 and effectively regulate the behavior of applied urea-N in a soil-plant system (Xu et al 2000b(Xu et al , 2001. The combined use of DCD and urea was useful as it simultaneously mitigated N 2 O emission by 53% and CH 4 emission by 22% and improved crop quality when compared with the use of urea alone (Ghosh et al 2003).…”

Section: Introductionmentioning

confidence: 99%

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Methane and nitrous oxide emissions from rice paddy soil as influenced by timing of application of hydroquinone and dicyandiamide

Zhang

et al. 2009

Nutr Cycl Agroecosyst

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A pot trial and a field experiment were conducted to study the effect of timing of application of nitrification inhibitor dicyandiamide (DCD) on N 2 O and CH 4 emissions from rice paddy soil. Four treatments including Treatment CK 1 , DCD-1 (application of DCD with basal fertilizer), DCD-2 (DCD with tillering fertilizer) and DCD-3 (DCD with panicle initiation fertilizer), were designed and implemented in pot experiment. Total N 2 O and CH 4 emissions from DCD-treated soils were decreased profoundly when compared with that from urea alone (P \ 0.05). Application of DCD together with basal fertilizer, tillering fertilizer and panicle initiation fertilizer reduced N 2 O emission by 8, 30 and 2%, respectively, while those for CH 4 were 21, 8 and 1%. The field experiment with four treatments was carried out subsequently, and a kind of urease inhibitor hydroquinone (HQ) was also incorporated with DCD simultaneously. The combined use of HQ and DCD with basal fertilizer, tillering fertilizer and panicle initiation fertilizer decreased N 2 O emissions by 24, 56 and 17%, respectively, while those for CH 4 were 35, 19 and 12%. N 2 O emission was effectively reduced by the inhibitor(s) applied with tillering fertilizer before midseason aeration, while CH 4 emission was effectively decreased by the combined use of inhibitor(s) with basal fertilizer before rice transplanting. Furthermore, an increase in rice yield and a reduction of total global warming potential (GWP) of CH 4 and N 2 O could be achieved by using inhibitor(s) in rice paddy field.

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Nitrate and Nitrogen Oxides: Sources, Health Effects and Their Remediation

Hakeem

Ṣābir

Öztürk

et al. 2016

Reviews of Environmental Contamination and Toxicology

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Increased use of nitrogenous (N) fertilizers in agriculture has significantly altered the global N-cycle because they release nitrogenous gases of environmental concerns. The emission of nitrous oxide (NO) contributes to the global greenhouse gas accumulation and the stratospheric ozone depletion. In addition, it causes nitrate leaching problem deteriorating ground water quality. The nitrate toxicity has been reported in a number of studies showing the health hazards like methemoglobinemia in infants and is a potent cause of cancer. Despite these evident negative environmental as well as health impacts, consumption of N fertilizer cannot be reduced in view of the food security for the teeming growing world population. Various agronomic and genetic modifications have been practiced to tackle this problem. Some agronomic techniques adopted include split application of N, use of slow-release fertilizers, nitrification inhibitors and encouraging the use of organic manure over chemical fertilizers. As a matter of fact, the use of chemical means to remediate nitrate from the environment is very difficult and costly. Particularly, removal of nitrate from water is difficult task because it is chemically non-reactive in dilute aqueous solutions. Hence, the use of biological means for nitrate remediation offers a promising strategy to minimize the ill effects of nitrates and nitrites. One of the important goals to reduce N-fertilizer application can be effectively achieved by choosing N-efficient genotypes. This will ensure the optimum uptake of applied N in a balanced manner and exploring the molecular mechanisms for their uptake as well as metabolism in assimilatory pathways. The objectives of this paper are to evaluate the interrelations which exist in the terrestrial ecosystems between the plant type and characteristics of nutrient uptake and analyze the global consumption and demand for fertilizer nitrogen in relation to cereal production, evaluate the various methods used to determine nitrogen use efficincy (NUE), determine NUE for the major cereals grown across large agroclimatic regions, determine the key factors that control NUE, and finally analyze various strategies available to improve the use efficiency of fertilizer nitrogen.

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Methane emission from a simulated rice field ecosystem as influenced by hydroquinone and dicyandiamide

Cited by 25 publications

References 25 publications

Mitigation of N2O and CH4 Emission from Rice and Wheat Cropping Systems Using Dicyandiamide and Hydroquinone

Mitigation of N2O and CH4 Emission from Rice and Wheat Cropping Systems Using Dicyandiamide and Hydroquinone

Methane and nitrous oxide emissions from rice paddy soil as influenced by timing of application of hydroquinone and dicyandiamide

Nitrate and Nitrogen Oxides: Sources, Health Effects and Their Remediation

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