2012
DOI: 10.1590/s0100-204x2012000200001
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Spatio-temporal variability of sugarcane yield efficiency in the state of São Paulo, Brazil

Abstract: -The objective of this work was to assess the spatial and temporal variability of sugarcane yield efficiency and yield gap in the state of São Paulo, Brazil, throughout 16 growing seasons, considering climate and soil as main effects, and socioeconomic factors as complementary. An empirical model was used to assess potential and attainable yields, using climate data series from 37 weather stations. Soil effects were analyzed using the concept of production environments associated with a soil aptitude map for s… Show more

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Cited by 37 publications
(30 citation statements)
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“…In the study period (1999-2010) the yield trend is approximated by a linear function, explaining already up to 95% of the sugarcane yield variation. Several authors [16,36] explain this trend by the growing interest of sugarcane in Brazil as a source of biofuels, the increased price of energy and the fact that much newly planted sugarcane (expansion class) has higher yields in the first harvest.…”
Section: Statistical Yield Estimation and Accuracy Assessmentmentioning
confidence: 99%
“…In the study period (1999-2010) the yield trend is approximated by a linear function, explaining already up to 95% of the sugarcane yield variation. Several authors [16,36] explain this trend by the growing interest of sugarcane in Brazil as a source of biofuels, the increased price of energy and the fact that much newly planted sugarcane (expansion class) has higher yields in the first harvest.…”
Section: Statistical Yield Estimation and Accuracy Assessmentmentioning
confidence: 99%
“…The soil variability analysis using geostatistics enables the adjustment of the semivariogram for georeferenced data with spatial dependence. However, with the affinity between the spatial dependencies of any two attributes, modeled by crossed semivariogram, the kriging map for the main attribute can be obtained with difficulty, and it is of greater interest due to the secondary attribute, which is usually easy to obtain (Molin et al, 2007;Montanari et al, 2010;Siqueira et al, 2010;Dalchiavon et al, 2011a;Marin & Carvalho, 2012). Then, from the second attribute, more site-specific soil management for the primary attribute could be obtained.…”
Section: Introductionmentioning
confidence: 99%
“…KASSAM, 1979) é um modelo mais simples que os já mencionados, porém figura como uma opção viável já que tem apresentado resultados satisfatórios para estudos agrometeorológicos envolvendo a cultura da cana-de-açúcar (GOUVÊA et al, 2009;OLIVEIRA et al, 2012;CARVALHO, 2012;.…”
Section: (Food and Agriculture Organization Of The United Nations) (Munclassified
“…Para a cultura da cana-de-açúcar há diversos modelos de simulação, com destaque para os modelos mecanísticos sul-africano DSSAT/CANEGRO (INMAN-BAMBER, 1991;BEZUIDENHOUT, 2002) e australiano APSIM-Sugarcane que, embora desenvolvidos de maneira independente, apresentam origens similares (O'LEARY et al, 2000). KASSAM, 1979) é um modelo mais simples em estrutura (processos simulados e parâmetros) do que os demais supramencionados, contudo tem apresentado resultados satisfatórios para estudos agrometeorológicos para a cana-de-açúcar no Brasil (GOUVÊA et al, 2009;OLIVEIRA et al, 2012;CARVALHO, 2012;.…”
Section: Introductionunclassified
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