2006
DOI: 10.1590/s0100-06832006000600003
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Efeito da queima da palhada da cana-de-açúcar e de aplicações de vinhaça e adubo nitrogenado em características tecnológicas da cultura

Abstract: & Segundo Urquiaga (2) RESUMOAs práticas da queima, aplicação de vinhaça e fertilizante nitrogenado são comuns na cultura de cana-de-açúcar. No entanto, estudos de longa duração são pouco encontrados na literatura. Neste trabalho, realizado na Usina Cruangi, Timbaúba, PE, transição entre a Zona da Mata e o Agreste daquele Estado, objetivou-se avaliar o efeito da aplicação de N (80 kg ha -1 na forma de uréia), da vinhaça (80 m 3 ha -1 ) e da queima (com ou sem queima) da palhada antes do corte, entre 1983 e 199… Show more

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Cited by 25 publications
(29 citation statements)
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“…The importance of the contribution of vinasse in providing K for the cultivation of sugarcane is noticeable (Table 1), and the negative impact of the reduction of the remaining DMB in sandy soils by the action of fire is also clear. This reduction in DMB supply, observed in the WV areas, due to the burning, was approximately 6.0 Mg ha -1 (Table 2), but Resende et al (2006) point out that, with the burning, up to 10 Mg ha -1 year -1 DMB may be lost, and thus, significant loss of C, N, K. Straw burning speeds up the mineralization of nutrients in the soil, among which K stands out. However, the rapid entry into the system may also favor its leaching, especially in soils with low CEC.…”
Section: Resultsmentioning
confidence: 92%
“…The importance of the contribution of vinasse in providing K for the cultivation of sugarcane is noticeable (Table 1), and the negative impact of the reduction of the remaining DMB in sandy soils by the action of fire is also clear. This reduction in DMB supply, observed in the WV areas, due to the burning, was approximately 6.0 Mg ha -1 (Table 2), but Resende et al (2006) point out that, with the burning, up to 10 Mg ha -1 year -1 DMB may be lost, and thus, significant loss of C, N, K. Straw burning speeds up the mineralization of nutrients in the soil, among which K stands out. However, the rapid entry into the system may also favor its leaching, especially in soils with low CEC.…”
Section: Resultsmentioning
confidence: 92%
“…Este efeito de K pode ser atribuído, em parte, à disponibilização pela decomposição da palha remanescente, ou pela ação das doses de vinhaça. Resende et al (2006a), a aplicação de vinhaça e a manutenção da palhada no sistema de cana crua não afetam, de forma consistente, as características tecnológicas da cultura de cana-deaçúcar. Carvalho et al (2013), em trabalho realizado em condições semelhantes ao do presente estudo, não verificaram a influência de doses de gesso e vinhaça na melhoria da qualidade tecnológica da cultura.…”
Section: Resultsunclassified
“…Applying vinasse and maintaining sugarcane straw on the soil positively affect sugar production with gains in yield, indicating that both are essential to determining the crop yield and sucrose accumulation (RESENDE et al, 2006). Vinasse effectively meets the majority of plant nutrient demands in areas with low potassium concentrations, with greater effects when added together with sugarcane straw.…”
Section: Resultsmentioning
confidence: 99%
“…The use of vinasse is advantageous because it contains significant amounts of chemical elements [especially K and micronutrients (Zn, Fe, Mn and Cu), and at lower levels, Ca, Mg, and N] essential to plants, and vinasse applications can supply the majority of mineral fertilization nutrient requirements, with several studies reporting increased sugarcane productivity in response to vinasse applications (MEDINA et al, 2002;RESENDE et al, 2006). However, vinasse may cause nutrient and cation-exchange capacity (CEC) imbalances and induce soil saturation when applied without criteria, causing problems such as the leaching of its constituents into groundwater.…”
Section: Introductionmentioning
confidence: 99%