2005
DOI: 10.1590/s0103-90162005000100005
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Growth indices ans productivity in sugarcane

Abstract: A knowledge about the temporal development of agronomic variables in sugarcane is a very important aspect for the development of crop yield prediction models using remote sensing, and further studies are still needed. This paper describes the temporal evolution of sugarcane biophysical parameters, such as total biomass, leaf area index, number of plants per meter, and productivity. During two seasons, a commercial field in Araras/SP, planted with variety SP80-1842, on the 4 th and 5 th cuts, was monitored on e… Show more

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Cited by 31 publications
(21 citation statements)
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“…However, a very important part of the biomass produced in the system remains within it as dead material (dead leaves and stems), green leaves and turfs which are consequently burnt before and after harvesting; in the P cycling those fluxes are recorded either as P coming from completely burnt ashes (dry deposition) or uncompleted (partially) burnt materials that remain in the soil floor to be later decomposed, therefore entering in the internal P cycling (Sequera et al, 1991). The curves that best fitted green biomass and stem productivity increases in sugar cane, in relation to numbers of days of growing, were sigmoidal-shaped, similar information reported Simoes et al (2005) for total biomass and productivity in sugar cane commercial plantations in Araras, Brazil.…”
Section: Discussionsupporting
confidence: 77%
“…However, a very important part of the biomass produced in the system remains within it as dead material (dead leaves and stems), green leaves and turfs which are consequently burnt before and after harvesting; in the P cycling those fluxes are recorded either as P coming from completely burnt ashes (dry deposition) or uncompleted (partially) burnt materials that remain in the soil floor to be later decomposed, therefore entering in the internal P cycling (Sequera et al, 1991). The curves that best fitted green biomass and stem productivity increases in sugar cane, in relation to numbers of days of growing, were sigmoidal-shaped, similar information reported Simoes et al (2005) for total biomass and productivity in sugar cane commercial plantations in Araras, Brazil.…”
Section: Discussionsupporting
confidence: 77%
“…The yield estimation methods for sugarcane adopted by the Brazilian government are considered subjective because they are based on information gathered from direct inquiries to the production sector, such as field research using questionnaires, surveys on information about demands on agriculture raw materials, use of yield historical data and field observations on plant behavior (IBGE, 2002;CONAB, 2007). The possibility of determining sugarcane development by spectral data such as the Normalized Difference Vegetation Index -NDVI (Simões et al, 2005a) and the correlation between vegetation indices and sugarcane yield (Simões et al, 2005b;Simões et al, 2009) demonstrate the potential of using spectral data for yield estimates at local scale. It is necessary to study this potential in a regional scale, in order to gather timely information about the plant development and about the expected yield before the harvesting.…”
Section: Introductionmentioning
confidence: 99%
“…Este mesmo padrão foi observado por Tei et al (1996), ajustando este modelo ao acúmulo de massa seca da alface. Por outro lado, Simões et al (2005) afirmam que este modelo apresentou boas estimativas do acúmulo de matéria seca da planta, sobretudo no início e no fim do ciclo da cana-de-açúcar.…”
Section: Methodsunclassified
“…Na cultura da cana-de-açúcar, exemplos da utilização de modelos de crescimento incluem estudos sobre o efeito de doses de fertilizantes na produtividade (Gava et al, 2001;Santos et al, 2009); desempenho produtivo de cultivares em condições ambientais particulares (Oliveira et al, 2004;Silva et al, 2012), eficiência do uso da água de cultivares (Oliveira et al, 2010) e evolução temporal de variáveis agronômicas (Simões et al, 2005).…”
Section: Introductionunclassified