Contribution of fertilizer nitrogen to the total nitrogen extracted by sugarcane under Brazilian field conditions

Vieira-Megda, Michele Xavier; Mariano, Eduardo; Leite, José Marcos; Franco, Henrique Coutinho Junqueira; Vitti, André César; Megda, Márcio Mahmoud; Khan, Saeed Ahmed; Mulvaney, R. L.; Trivelin, Paulo César Ocheuze

doi:10.1007/s10705-015-9676-7

Cited by 64 publications

(63 citation statements)

References 35 publications

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“…Immediate release of soluble N fertilizers explains optimal N fertilizer recovery by crops immediately following fertilizer application [48]; during crop growth, however, N derived from SOM proportionally increases as the root system expands, which does not occur with N from fertilizers [46]. This finding indicated that SOM, and not fertilizers, is the main source of N for sugarcane over the course of the entire crop cycle, as previously reported [46][47][48][49]. As such, soil N supply from mineralization must be considered in N management systems where increasing NUE is a primary goal.…”

Section: Nitrogen Forms and Nitrogen Use Efficiency By Sugarcanesupporting

confidence: 58%

“…A common finding in such studies is that NDFP levels are higher during initial growth stages and decrease through the final growing stages. Franco et al [46] and Vieira-Megda et al [47], for instance, observed that NDFP in sugarcane reached 60-70 % in the initial stages of the crop cycle but had dropped to 10-20 % at the time of harvesting, which demonstrates the importance of N fertilizer application for crop growth in the initial stages and the importance of soil N reserves for the remaining period. Immediate release of soluble N fertilizers explains optimal N fertilizer recovery by crops immediately following fertilizer application [48]; during crop growth, however, N derived from SOM proportionally increases as the root system expands, which does not occur with N from fertilizers [46].…”

Section: Nitrogen Forms and Nitrogen Use Efficiency By Sugarcanementioning

confidence: 97%

“…NDFP at the time of crop harvest normally varies between 10 and 28 % [35,37,40,41,[45][46][47], which means that 28 % of the N found in the plant (with the exception of the roots in most cases) derived from fertilizers and 72 % from other sources, such as SOM mineralization, biological N fixation (BNF), dry and wet deposition, and so on. A common finding in such studies is that NDFP levels are higher during initial growth stages and decrease through the final growing stages.…”

Section: Nitrogen Forms and Nitrogen Use Efficiency By Sugarcanementioning

confidence: 99%

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Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

Otto

Castro

Mariano³

et al. 2016

Bioenerg. Res.

116

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Land area devoted to sugarcane (Saccharum spp.) production in Brazil has increased from 2 million to 10 million ha over the past four decades. Studies have shown that, from an environmental perspective, the transformation of nitrogen (N) fertilizers into N 2 O gases can offset the advantages gained by replacing fossil fuels with biofuels. Our objectives here were to review recent developments in N management for sugarcane-biofuel production and assess estimates of N use efficiency (NUE) and N losses based on future scenarios, as well as for life-cycle assessments of bioenergy production. Approximately 60 % of N-based fertilizer applied to sugarcane fields in Brazil is recovered by plants and soils, whereas N losses to leaching and N 2 O emissions can average 5.6 and 1.84 % of the total applied N, respectively. Maintenance of trash, rotation with N-fixing legume species, and optimization of byproducts usage have potential for reducing the N requirements of sugarcane cultivation in Brazil. Moreover, the development of sugarcane genotypes with higher NUEs, along with management systems that consider soil capacity of mineralization, is required for improving the NUE of sugarcane. Strategies to maintain N as NH 4 + in sugarcane-cropped soils also have the potential to reduce N losses and enhance NUE. The development of secondgeneration biofuels is important for increasing biofuel production while simultaneously maintaining N rates and improving NUE, and sugarcane systems in Brazil show potential for sustainable biofuel production with low N rates and limited N 2 O losses. Reducing N rates in sugarcane fields is thus necessary for improving sugarcane-based biofuel production and reducing its environmental impacts.

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Section: Nitrogen Forms and Nitrogen Use Efficiency By Sugarcanesupporting

confidence: 58%

Section: Nitrogen Forms and Nitrogen Use Efficiency By Sugarcanementioning

confidence: 97%

Section: Nitrogen Forms and Nitrogen Use Efficiency By Sugarcanementioning

confidence: 99%

See 1 more Smart Citation

Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

Otto

Castro

Mariano³

et al. 2016

Bioenerg. Res.

116

View full text Add to dashboard Cite

show abstract

“…Thus, many studies generalize the recovery of N-urea for cultivation of sugarcane due to a non-discrimination of crop cycles. The recovery value of 20.50% looks significant when compared to other plant-cane studies such as Franco et al (2011) and Vieira-Megda et al (2015), who found a recovery of up to 10 and 13.6%, respectively, for sugarcane crops during the first cycle. Such a high recovery is supposedly due to good local weather conditions, especially related to water availability and irrigation.…”

Section: Dry Matter Of Shoots and Nitrogen Recoverymentioning

confidence: 46%

“…The most used fertilizer is urea. However, from all nitrogen applied to sugarcane as fertilizer, only 20-40% are actually recovered by the crop, which negatively affects production costs and the environment (Mariano et al, 2012;Vieira Megda et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Stalk yield and nitrogen (15N) recovery of irrigated sugarcane during the plant-cane cycle using urea

Bastos¹,

Teixeira²,

Silva³

et al. 2017

Aust J Crop Sci

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Sugarcane is the most promising among crops that produce renewable biofuels. An adequate availability of water and nutrients, especially nitrogen (N), is of utmost importance. The objective of this study was to evaluate stalk yield and the recovery of N-urea by sugarcane (plant-cane) subjected to different levels of water replacements and nitrogen fertilization doses using the 15 N isotopic dilution technique. The experiment was conducted in the southwest region of the state of Goiás, Brazil, using plastic pots. The experimental design was complete randomized blocks analyzed in 3 × 3 split plots with three replications. The treatments consisted of three levels of water replacements (75, 50 and 25%) and three N doses (60, 120 and 180 kg ha-1) in the form of enriched 15 N urea. N doses did not affect stalk yield, probably because 91.14% of all N accumulated in culms came from the soil and other sources. The rainfall (1,194.2 mm) was sufficient to meet the water requirements of the crop. The recovery of N-urea was not influenced by the N doses and represented on average of 20.5% of the total amount applied. The soil and other sources were the main providers of N to sugarcane plants regardless of the mineral-N dose applied.

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Performance of enhanced efficiency nitrogen fertilizers in green‐harvesting sugarcane

Barth

Otto

Mira

et al. 2020

Agrosystems Geosci & Env

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Enhanced efficiency fertilizers (EEF) are of interest for sugarcane (Saccharum spp.) production due to the potential to reduce N losses, and improve crop yield and environmental conditions. This study was conducted to determine the effect of urea with N‐(n‐butyl) thiophosphoric triamide (NBPT) or dicyandiamide (DCD) on NH3 volatilization and sugarcane yield. The NH3 volatilization, the foliar concentration of N and S, and yield of stalk and pol were monitored in two field trials testing six N sources (urea; urea + NBPT; urea + DCD; ammonium sulfate [AS]; ammonium nitrate [AN]; ammonium sulfate nitrate), and three N rates (50, 100, and 150 kg ha−1). The N losses from urea totaled 22 and 18% in Sites 1 and 2, respectively. Treating urea with NBPT reduced NH3 volatilization by 60%. Sugarcane yield increased 8.8; 11.6; and 16.0 Mg ha−1 (Site 1), and 4.5, 9.3, and 14.2 Mg ha−1 (Site 2) with the application of 50, 100, and 150 kg ha−1 N as compared to control, respectively. All N sources increased yields, demonstrating similar efficiency for sugarcane production. Green harvesting sugarcane cultivated in sandy soils with low organic matter concentration is highly responsive to N, showing similar efficiency between EEF and conventional N fertilizers.

show abstract

Contribution of fertilizer nitrogen to the total nitrogen extracted by sugarcane under Brazilian field conditions

Cited by 64 publications

References 35 publications

Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

Stalk yield and nitrogen (15N) recovery of irrigated sugarcane during the plant-cane cycle using urea

Performance of enhanced efficiency nitrogen fertilizers in green‐harvesting sugarcane

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