Análise Econômica Da Eficiência Da Produção De Cana-De-Açúcar De Fornecedores Do Estado Do Paraná

Melo, Cármem Ozana de; Esperancini, Maura Seiko Tsutsui

doi:10.17224/energagric.2012v27n3p48-60

Cited by 10 publications

(11 citation statements)

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“…Antônio Heriberto de Castro Teixeira 1 *, Janice F. Leivas 2 , Carlos C. Ronquim 2 and Gustavo Bayma-Silva 2 *Address all correspondence to: heriberto.teixeira@embrapa.br 1 Embrapa Coastal Tablelands, Aracaju-SE, Brazil 2 Embrapa Satellite Monitoring, Campinas-SP, Brazil…”

Section: Author Detailsmentioning

confidence: 99%

“…The first one is an annual crop, while the second one is a perennial crop, but both are replacing the natural vegetation (NV), composed by a mixture of Savannah and Atlantic Coastal Forest species. However, sugarcane is also replacing the coffee areas [1], as consequences of both sugar and alcohol explorations, but also by stimulating renewable energy use [2].…”

Section: Introductionmentioning

confidence: 99%

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The Use of MODIS Images to Quantify the Energy Balance in Different Agroecosystems in Brazil

Teixeira¹,

Leivas²,

Ronquim³

et al. 2018

Multi-Purposeful Application of Geospatial Data

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Sugarcane (SC) is expanding over coffee (CO), while both crops have replaced the natural vegetation (NV) in the northeastern side of São Paulo (SP) state, Southeast Brazil. Under these dynamic land-use changes, geosciences are valuable tools for evaluating the largescale energy and mass exchanges between the vegetation and the lower atmosphere. For quantification of the energy balance components in these mixed agroecosystems, MODIS images were used throughout the Simple Algorithm for Evapotranspiration Retrieving (SAFER) algorithm, during the year 2015 in the main sugarcane-and coffee-growing regions of the state. Regarding, respectively, sugarcane, coffee, and natural vegetation, the fractions of the net radiation (Rn) used as latent heat flux (λE) were 0.68, 0.87, and 0.77, while the corresponding ones for the sensible heat (H) fluxes were 0.27, 0.07, and 0.16. Negative H values were noticed from April to July, because of heat advection raising λE values above Rn, but they were more often in coffee than in sugarcane. It was concluded that sugarcane crop presented lower evapotranspiration rates, when compared with coffee, which could be an advantage under the actual water scarcity scenario. However, sugarcane replacing natural vegetation means environmental warming, while the land use changes promoted by coffee crop represented cooling conditions.

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Section: Author Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Use of MODIS Images to Quantify the Energy Balance in Different Agroecosystems in Brazil

Teixeira¹,

Leivas²,

Ronquim³

et al. 2018

Multi-Purposeful Application of Geospatial Data

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“…In this period, the ethanol production triggered relevant socioeconomic impacts such as increasing rural income, employment generation, reducing dependence on foreign oil, and the increase of Brazilian balance of trade (Negrão and Urban, 2005). After the decade of 1990, with the opening of the Brazilian economy, the sugarcane sector faced important changes, passing to act in a free market environment that required greater competitiveness and effectiveness of all involved agents in order to remain in the activity (Melo and Esperancini, 2012).…”

Section: Introductionmentioning

confidence: 99%

Technological parameters and economic analysis of sugarcane cultivated under irrigation depths for ethanol production in Santa Maria-RS, Brazil

Helena¹,

Marcia²,

Adroaldo³

et al. 2016

Afr. J. Agric. Res.

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This study aimed to perform economic analysis and evaluate the effect of technological parameters on plant and ratoon sugarcane under irrigation depths for ethanol production. Treatments were irrigation of 30, 60, 90, and 120% of ET c and a control treatment (no irrigation). The experimental design was a randomized block with six repetitions. We used a drip irrigation system with management based on crop evapotranspiration, according to the methodology proposed by FAO. In rainfed and under irrigation plant cane, the variable cost represented 54.40 and 66.81% and the fixed cost represented 45.60 and 33.19%, respectively. The difference in the cost of production in rainfed and irrigated was 27.23 and 57.20%, for the plant cane and ratoon, respectively. Moreover, we presented the economic viability, which for sugarcane grown in rainfed is 60% of ET c , with differences in the cost of production and net profit of 53.94 and 52.20%, and financial return in the year of implementation and 4 years and 4 months, respectively. The irrigation increased technological parameters for ethanol production. For plant cane, the only variable that showed no statistically significant difference was the fiber, and for ratoon cane the technological parameters did not have statistically significant difference.

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“…In Brazil, sugarcane (Saccharum officinarum) crop has increased, for both sugar and alcohol production, but also with the perspective of generating renewable energy [1]. In the São Paulo state, besides climate alterations, land use changes have been taking place, because of the expansion of these activities in several regions with climatic aptitude.…”

Section: Introductionmentioning

confidence: 99%

Sugarcane Water Productivity Assessments in the São Paulo state, Brazil

Teixeira¹,

Leivas²,

Ronquim³

et al. 2016

International Journal of Remote Sensing Applications

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São Paulo state, Brazil, has been highlighted by the sugarcane crop expansion. The actual scenario of climate and land use changes, bring attention for the large-scale water productivity (WP) analyses. MODIS images were used together with gridded weather data for these analyses. A generalized sugarcane growing cycle inside a crop land mask, from September 2011 to October 2012, was considered in the main growing regions of the state. Actual evapotranspiration (ET) is quantified by the SAFER (Simple Algorithm for Evapotranspiration Retrieving) algorithm, the biomass production (BIO) by the RUE (Radiation Use Efficiency) Monteith's model and WP is considered as the ratio of BIO to ET. During the four generalized sugarcane crop phases, the mean ET values ranged from 0.6 to 4.0 mm day -1 ; BIO rates were between 20 and 200 kg ha -1 day -1 , resulting in WP ranging from 2.8 to 6.0 kg m -3 . Soil moisture indicators are applied, indicating benefits from supplementary irrigation during the grand growth phase, wherever there is water availability for this practice. The quantification of the large-scale water variables may subsidize the rational water resources management under the sugarcane expansion and water scarcity scenarios.

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Análise Econômica Da Eficiência Da Produção De Cana-De-Açúcar De Fornecedores Do Estado Do Paraná

Cited by 10 publications

References 0 publications

The Use of MODIS Images to Quantify the Energy Balance in Different Agroecosystems in Brazil

The Use of MODIS Images to Quantify the Energy Balance in Different Agroecosystems in Brazil

Technological parameters and economic analysis of sugarcane cultivated under irrigation depths for ethanol production in Santa Maria-RS, Brazil

Sugarcane Water Productivity Assessments in the São Paulo state, Brazil

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