Soil carbon and nitrogen dynamics as affected by land use change and successive nitrogen fertilization of sugarcane

Sattolo, Thales Meinl Schmiedt; Mariano, Eduardo; Boschiero, Beatriz Nastaro; Otto, Rafael

doi:10.1016/j.agee.2017.06.005

Cited by 19 publications

(9 citation statements)

References 76 publications

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“…The increase in net mineralization by long-term synthetic N fertilization is well documented in the literature 31 , 32 . The enrichment of soil N pools has the potential to modify the microbial process of C and N transformation in soils 51 , which may ultimately affect NRE.…”

Section: Discussionmentioning

confidence: 78%

“…Furthermore, the use of 15 N-labeled fertilizers allows the determination of the fate of fertilizer, and estimation of the uptake of N derived from the soil and the residual effects of N fertilization. Therefore, the use of 15 N-labeled fertilizers is a useful approach for evaluating the effects of long-term N fertilization on the NRE in the current year since previous fertilization has the potential to affect soil N processes such as immobilization, mineralization, and soil C and N storage 15 , 30 – 32 .…”

Section: Introductionmentioning

confidence: 99%

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Long-term N fertilization reduces uptake of N from fertilizer and increases the uptake of N from soil

Joris

Vitti

Almeida

et al. 2020

Sci Rep

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Long-term supply of synthetic nitrogen (N) has the potential to affect the soil N processes. This study aimed to (i) establish N response curves to find the best balance between inputs and outputs of N over four ratoons; (ii) use 15N-labeled fertilizer to estimate the N recovery efficiency of fertilizer applied in the current season as affected by the N management in the previous three years. Nitrogen rates (control, 60, 120, and 180 kg ha−1 N) were applied annually in the same plots after the 1st, 2nd, 3rd, and 4th sugarcane cycles. Sugarcane yield, N uptake, and N balance were evaluated. In the final season, 100 kg ha−1 of 15N was also applied in the microplots to evaluate the effect of previous N fertilization on N derived from fertilizer (NDF) and N derived from soil (NDS). Sugarcane yields increased linearly with the N rates over the four sugarcane-cycles. The best balance between the input of N through fertilizer and N removal by stalks was 90 kg ha−1 N in both the 1st and 2nd ratoons, and 71 kg ha−1 N in both the 3rd and 4th ratoons. Long-term application of N reduced NDF from 41 to 30 kg ha−1 and increased NDS from 160 to 180 kg ha−1 N. A key finding is that long-term N fertilization has the potential to affect soil N processes by increasing the contribution of soil N and reducing the contribution of N from fertilizer.

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Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Long-term N fertilization reduces uptake of N from fertilizer and increases the uptake of N from soil

Joris

Vitti

Almeida

et al. 2020

Sci Rep

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“…Several studies also indicate organomineral fertilizers as viable substitutes for mineral fertilizers in many crops [8,[34][35][36][37][38]. Regarding the soil dynamics of C and N, long-term field report demonstrated reductions in soil stocks of these nutrients in deep soil layers after the applications of large quantities of synthetic mineral fertilizers, which did not occur when the fertilizer source was an organomineral [39]. Organomineral fertilizers also reduce nitrogen (N-NH 3 ) volatilization when compared to exclusively mineral sources [40].…”

Section: Discussionmentioning

confidence: 99%

Chemical and technological characteristics of sugarcane as a function of pelletized organomineral fertilizer with filter cake or sewage sludge sources

Gonçalves

Camargo

Sousa

et al. 2020

Preprint

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Sugarcane is one of the major alternatives for the biofuel sector and its large production has considerable environmental impacts. Organomineral fertilizers formulated with environmental liabilities such as filter cake and sewage sludge positively affect parameters of plant growth and development. The objective of this study was to evaluate the chemical and technological characteristics of sugarcane fertilized with pelletized organomineral fertilizers based on filter cake and sewage sludge. Eight field treatments were studied, being three levels of organomineral (50, 100, 150%) of two organic matter sources (filter cake, sewage sludge), plus a control with 100% of the recommended fertilization via mineral fertilizer and no fertilization control (0%). Sugarcane was evaluated during two consecutive harvest, and the amount of stalks per hectare (ton ha−1), the sugarcane productivity (ton ha−1), the quantity of sugar per hectare (TSH, ton ha−1), and the chemical and technological analysis of the sugarcane juice: pol (%), brix (%), purity (%) and fiber (%) were evaluated. None of the organomineral sources or doses differed from the exclusive mineral fertilization. The analysis of both harvests indicated that the first cut was the most productive since the responses of the first harvest were superior or similar to the second harvest. The recommended organomineral dose to obtaining maximum quantitative and qualitative sugarcane results was between 102 and 109% of the regular recommendation for mineral fertilization, regardless of the organic source in the first sugarcane harvest. In the second sugarcane harvest, sewage sludge source increase by 4.68 and 4.19% the total amount of sugar per hectare and the quantity of sugarcane compared to the sugarcane filter cake source. Sewage sludge and sugarcane filter cake as sources for organominerals are viable alternatives and advantageous in economic and environmental terms for the cultivation of sugarcane.

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“…1). Studies have reported depletion of mineral N and subsequent stabilization in tropical soil cultivated with sugarcane (Mariano et al 2015;Sattolo et al 2017) that explains the low content of NH 4…”

Section: Soil Nhmentioning

confidence: 99%

Early nitrogen supply as an alternative management for a cover crop-maize sequence under a no-till system

Momesso

Crusciol

Soratto

et al. 2021

Nutr Cycl Agroecosyst

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Optimizing agronomic efficiency (AE) of nitrogen (N) fertilizer use by crops and enhancing crop yields are challenges for tropical no-tillage systems since maintaining crop residues on the soil surface alters the nutrient supply to the system. Cover crops receiving N fertilizer can provide superior biomass, N cycling to the soil and plant residue mineralization. The aims of this study were to (i) investigate N application on forage cover crops or cover crop residues as a substitute for N sidedressing (conventional method) for maize and (ii) investigate the supply of mineral N in the soil and the rates of biomass decomposition and N release. The treatments comprised two species, i.e., palisade grass [Urochloa brizantha (Hochst. Ex A. Rich.) R.D. Webster] and ruzigrass [Urochloa ruziziensis (R. Germ. and C.M. Evrard) Crins], and four N applications: (i) control (no N application), (ii) on live cover crops 35 days before maize seeding (35 DBS), (iii) on cover crop residues 1 DBS, and (iv) conventional method (N sidedressing of maize). The maximum rates of biomass decomposition and N release were in palisade grass. The biomass of palisade grass and ruzigrass were 81 and 47% higher in N application at 35 DBS compared with control in ruzigrass (7 Mg ha−1), and N release followed the pattern observed of biomass in palisade and ruzigrass receiving N 35 DBS (249 and 189 kg N ha−1). Mineral N in the soil increased with N application regardless of cover crop species. Maize grain yields and AE were not affected when N was applied on palisade grass 35 DBS or 1 DBS (average 13 Mg ha−1 and 54 kg N kg−1 maize grain yield) compared to conventional method. However, N applied on ruzigrass 35 DBS decreased maize grain yields. Overall, N fertilizer can be applied on palisade grass 35 DBS or its residues 1 DBS as a substitute for conventional sidedressing application for maize.

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Soil carbon and nitrogen dynamics as affected by land use change and successive nitrogen fertilization of sugarcane

Cited by 19 publications

References 76 publications

Long-term N fertilization reduces uptake of N from fertilizer and increases the uptake of N from soil

Long-term N fertilization reduces uptake of N from fertilizer and increases the uptake of N from soil

Chemical and technological characteristics of sugarcane as a function of pelletized organomineral fertilizer with filter cake or sewage sludge sources

Early nitrogen supply as an alternative management for a cover crop-maize sequence under a no-till system

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