Nitrogen sources and application rates affect emissions of N2O and NH3 in sugarcane

Degaspari, Iracema Alves Manoel; Soares, Johnny R.; Montezano, Zaqueu Fernando; Grosso, Stephen J. Del; Vitti, André César; Rossetto, Raffaella; Cantarella, Heitor

doi:10.1007/s10705-019-10045-w

Cited by 47 publications

(13 citation statements)

References 52 publications

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“…The amount of NH 3 volatilization depends on the amount of the urea applied to the soil. The NH 3 volatilization loss increased with the increasing rate urea applications, which is in agreement with previous works [20,35,36]. The LU in soil that was previously hydrolysed could proceed through nitrification due to favourable moisture content.…”

Section: Discussionsupporting

confidence: 91%

“…Researchers have recommended several mechanisms to enhance the NUE of applied urea to confirm the need-based smooth supply of N while lowering the risk of N losses. Soil and fertilizer management have been reported to reduce significant losses of N from NH 3 volatilization and N 2 O emission [18][19][20]. However, there is currently no single technology available that can increase NUE by restricting the NH 3 volatilization and N 2 O emission from applied urea.…”

Section: Introductionmentioning

confidence: 99%

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Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application

et al. 2021

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Gaseous loss of N leads to lower nitrogen use efficiency (NUE) of applied urea and N content of the soil. This laboratory study was conducted to compare the nitrogen losses from two tropical soil series (Bungor sandy clay loam and Selangor clay) incubated with either liquid urea (LU) or granular urea (GU) at 0, 300, 400, or 500 mg/kg of soil for thirty days. The NH3 volatilization, N2O emission, and N content in the soils were measured throughout the incubation period. For the same application rate, the total NH3 volatilization loss was higher in GU-treated soils than the LU-treated soils. NH3 volatilization loss continued up to the 15th day in the Selangor soil, while in the Bungor soil series it continued up to the 26th day. Higher amounts of N2O emissions were recorded in GU-treated soils than the LU-treated soils, and N2O emission increased with increasing rate of GU and LU applications in both soils. The N2O emission was higher only in the first few days and then tapered off at the seventh and eighth day in Bungor and Selangor soil series, respectively. The total N2O emission was higher in the Selangor soil series than that of Bungor soil series. The total N content that remained in the LU-treated soils after 30 days of incubation was higher than the GU-treated soils. The total N loss from applied urea was higher in the sandy clay loam Bungor soils than that of clayey Selangor soil series. The results suggest that the LU may be a better N fertilizer source than GU due to lower N loss from NH3 volatilization and N2O emission.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application

et al. 2021

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“…Interest, we expected that application of N would promote the increase of mineralization and content of N in soil. However, in our study we did not notice this result with a small difference of 0.2 g kg -1 between residue and residue + N. Possibly this result can be associated with the low rate of residues tested, which was 50% lower than in the field (green harvest), and application of N as a source of urea; which is characterized by high losses of N through ammonia volatilization, mainly when surface-applied to soils [50][51][52][53] . 54 showed that N lost by application of N as urea can achieve 35% of N applied when associated with sugarcane residue.…”

Section: Discussioncontrasting

confidence: 81%

How Does N Mineral Fertilizer Influence the Crop Residue N Credit?

Almeida¹,

Silva²,

Wendling³

2020

Nitrogen

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In no-tillage systems, there is an accumulation of crop residues (CR), which plays an essential role in the availability of soil-N. A study was set up to provide information regarding the N credit and the influence of N mineral fertilizer. There was the addition of a similar rate of residue (10 Mg ha−1; sugarcane, soybean, and brachiaria) and N mineral fertilizer (urea; 120 kg N ha−1) in loam soil. After the stabilization of biological activity (73 days), soil and remaining residues were collected, and C and N monitored. The results showed that the N credit was positive with the application of soybean, sugarcane, and brachiaria. There was a positive balance of the soybean N credit in soil with a reduction from 2.49 to 0.90 g kg−1 of N in remaining residue, and a direct increase of 90% of soil-N. There is no need of N fertilizer to potentialize the soybean N credit, but it is required to potentialize N credit of brachiaria and sugarcane. The urea demonstrated to be an excellent enhancer of brachiaria N credit, but it was not adequate for sugarcane residues. Based on our result, the accumulation and incorporation of CR can be considered as N credit with a positive contribution in soil-N.

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“…This is because, after soil application, urea is hydrolyzed by urease to form ammonium carbonate [CO(NH2)2 + 2H2O → (NH4)2CO3], which decomposes rapidly to ammonium, hydroxyl, and bicarbonate [(NH4)2CO3 + H2O → 2NH4 + + OH -+ HCO3 -], increasing pH around fertilizer granules (Rochette et al, 2009). In short, if urea is not incorporated into the soil, as in this study, part of the NH4 + can convert to NH3 and be lost to the atmosphere (Nascimento et al, 2013;Rochette et al, 2013;Degaspari et al, 2020;Soares et al, 2020).…”

Section: Resultsmentioning

confidence: 76%

“…Ammonia volatilization from urea on the soil surface can be low, totaling 1%, or extremely high, above 50% of the applied N (Cantarella et al, 2008;Sanz-Cobena et al, 2012;Tasca et al, 2011;Rochette et al, 2013). When high N doses are applied, losses can be greater (Ma et al, 2010) when soil moisture for infiltration is low and temperatures are high, as well as a greater amount of vegetation cover on the soil surface (Tasca et al, 2011;Nascimento et al, 2013;Liu et al 2019;Degaspari et al, 2020;Soares et al, 2020), as observed in the present study.…”

Section: Resultsmentioning

confidence: 99%

GRAIN SORGHUM GROWN AS SECOND CROP AND INOCULATED WITH Azospirillum brasilense ASSOCIATED WITH NITROGEN FERTILIZATION

Soares

Andreotti

Vicentini

et al. 2021

Rev. Agric. Neotrop.

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Nitrogen fertilization in crop sorghum during the off-season may have a lower cost-benefit ratio than expected, due to the residual effect of the predecessor crop. However, the use of growth-promoting bacteria can be an economical alternative to increase crop yield in the Cerrado. The objective was to evaluate the response of grain sorghum to nitrogen fertilization and its inoculation by A. brasilense. A complete randomized block design in a 5 x 2 factorial arrangement was used, with five replications of the following treatments: recommended amount of N (120 kg ha-1 of N-urea), divided into 0 %-100 %, 25 % -75 %, 50 %-50 % and 100 %-0 %, in sowing and coverage, respectively, and the control (without N); with and without inoculation via sorghum seed. The morphological and productivity components of the crop were evaluated. The application of 100 % of N in the sowing provided larger plants and the 50 %-50 % installment provided smaller plants. The plants did not respond to inoculation by A. brasilense. The yield components of sorghum grown in succession to soybean, rainfed, do not change due to A. brasilense inoculation and supply or installment of nitrogen fertilization.

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Nitrogen sources and application rates affect emissions of N2O and NH3 in sugarcane

Cited by 47 publications

References 52 publications

Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application

Gaseous Nitrogen Losses from Tropical Soils with Liquid or Granular Urea Fertilizer Application

How Does N Mineral Fertilizer Influence the Crop Residue N Credit?

GRAIN SORGHUM GROWN AS SECOND CROP AND INOCULATED WITH Azospirillum brasilense ASSOCIATED WITH NITROGEN FERTILIZATION

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