000			02869nam a22003977a 4500
999			_c151192 _d151192
003			CR-SiIICA
005			20230707151244.0
007			ta
008			230707b ||||| |||| 00| 0 spa d
040			_aCR-SiIICA _beng
041			_aeng
100			_aSouza, Rosinei
245			_aEffects of sugarcane harvesting with burning on the chemical and microbiological properties of the soil
260			_bELSEVIER _c2012
270			_aSan José, C.R.
300			_a6 pages
520			_aSoil microbial biomass represents an important and strategic reservoir of plant nutrients that can be quickly altered due to different soil and crop managements. In this context, the aim of this study was to evaluate the influence of sugarcane harvesting systems, with or without burning, on the chemical and biological properties of the soil. The experiment was conducted on a dystrophic red latosol (Oxisol) soil in 2008, in a commercial area of a sugarcane factory in the municipality of Paraguaçu Paulista, São Paulo state, Brazil. The treatments included areas previously burned, areas with mechanical harvesting and no burning and native forest. Soil samples were collected immediately after the sugarcane harvest from the treatments at a depth of 0–20 cm. The parameters evaluated were: microbial biomass C and N (MB-C and MB-N), total organic C (TOC), recalcitrant C (R-C), labile-C (L-C), total nitrogen (TN), pH, exchangeable cations (Ca2 + + Mg2 + and K+), exchangeable (Al3+) and potential (H+ + Al3+) acidity, and P available in the soil. Soil chemical fertility under the sugarcane without burning was better than under sugarcane with burn. The TOC values for native forest and for the harvesting without burn were higher than those under the sugarcane with burn (148% and 54%, respectively). This superiority was also confirmed for TN, L-C and R-C. An even more significant difference was found under natural forest and sugarcane without burn for MB-C, which was 222% higher under native forest and 102% higher under sugarcane without burn than the value under sugarcane with burn, confirming that MB-C could be a reliable indicator of soil quality for monitoring soils under different sugarcane harvesting systems.
650			_aSUGARCANE _9165671
650		0	_9137969 _aBIOMASS
650			_aSOIL _9165084
650		0	_9165098 _aSOIL ORGANIC MATTER
650			_aBIOMASS _9137969
650			_aHARVESTING _9150021
650			_aCROPS _9142770
650		0	_9142765 _aCROP MANAGEMENT
690			_aSACCHARUM SPP _9163569
700			_aSantos, Tiago
700			_aMachado, Walquiria
700			_aHungria, Mariangela
700			_aTavares, Joao
700			_4Guimaraes, Maria _91
787			_9352071 _aGCF CARICOM AgReady Reference
856			_qDOI _uhttps://doi.org/10.1016/j.agee.2012.03.012 _yeng
942			_2z _cRED