Química Nova | |
Phosphorus in chronosequence of burnt sugar cane in cerrado: humic acid analysis by 31P NMR | |
Perin, Adriano1  Universidade da Coruña, La Coruña, ES1  Instituto Federal de Educação, Ciência e Tecnologia Goiano, Rio Verde, Brasil1  García, Andrés C.1  Pereira, Marcos G.1  Rossi, Celeste Q.1  Universidade Federal Rural do Rio de Janeiro, Seropédica, Brasil1  Gazolla, Paulo R.1  González, Antonio P.1  | |
关键词: humic substances; vinasse; organic phosphorus.; | |
DOI : 10.1590/S0100-40422013000800009 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
The aim of this study was to identify, with the use of 31P NMR spectroscopy, organic P species in humic acids (HA) in samples from Oxisol cultivated in chronosequence with sugar cane, pasture and Cerrado. The main forms of P-type found were orthophosphate, monoester-P (phosphate sugars) and P-diester (orthophosphate). The 31P NMR technique proved capable of identifying changes in the areas studied as a function of sugar cane burning time. In areas with 1 and 5 years of burnt cane, a decrease in recalcitrant organic P in humic acids indicated the need for use of P-humic substances for plant nutrition.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912050596091ZK.pdf | 640KB | download |