000			03008nab a2200373 i 4500
003			BR-BrBNA
005			20250430142814.0
008			250430b2020 bl.mr|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aP33 _b0150
072			_aP11
100			_aSoares, Camille Flores
100			_aMarchesan, Enio
100			_aProchnow, Matias Henrique
100			_aFleck, Alisson Guilherme
100			_aOliveira, Daivyd Silva de
100			_aRiste, Uashington da Silva Riste
100			_aMinella, Jean Paolo Gomes
100			_aLúcio, Alessandro Dal’Col
245			_aGreenhouse gas emission, water quality and straw decomposition as a function of rice postharvest field management
500			_aPublicação on-line; 30 ref.; 7 tables; Sumaries (En)
520			_a ABSTRACT: The objective of this paper was to evaluate the quality of water drained after the use of the knife-roller (an implement used to incorporate rice residues after harvest), the partial global warming potential (pGWP) and straw decomposition as a result of postharvest field management of irrigated rice. The experiments were conducted during the 2018 and 2019 offseason and the treatments consisted of several water drainage periods (0, 3, 6, 9 and 12 days) after a field pass with a knife-roller. In addition, a nonflooded harvest treatment without straw management was included. Analysis of drainage water three days after a pass with the kniferoller showed a reduction in total soluble solids by 94% compared to zero days. Nitrogen and soluble phosphorus were not influenced by the treatments. However, potassium levels increased as the drainage period increased, which is related to the period between harvest and drainage. As the electrical conductivity is influenced by the concentration of ions, it showed the same response curve as the potassium levels and, for pH, there were small oscillations influenced by the temperature. The total CH4 emission and the pGWP were higher when the water depth remained for a longer period. However, the N2O emissions were higher in the absence of soil submersion. Water should be drained three days after a pass with the knife-roller in order to reduce potassium loss and suspended solids as well as pGWP. The use of the knife-roller accelerated the process of straw decomposition in relation to the unmanaged straw treatment. Key words: global warming, knife-roller, methane, nitrous oxide, Oryza sativa.
650			_aARROZ IRRIGADO
650			_aANÁLISE DO SOLO
650			_aMANEJO DO SOLO
650			_aÁGUA
650			_aDRENAGEM
650			_aQUALIDADE
650			_aCONDIÇÃO AMBIENTAL
773	0		_01365 _9344637 _dCampinas-SP Instituto Agronômico - Coordenadoria da Pesquisa Agropecuária 1941 _o2024-4959 _tBragantia (Brazil) _x0006-8705 _gv. 49 p. 305-318 ; (2020) _wBR2025000660
856			_uhttps://www.scielo.br/j/brag/a/jqDvYQfRM7mTwVghXpPj5xc/?format=pdf&lang=en
942			_cANA
999			_c331287 _d331287