Alteraciones químicas y fitodisponibilidad de níquel en suelo tratado con lodo albañal

Química Nova

Felipe Carlos Alvarez V.¹  Antonio Enedi Boaretto¹  Cassio Hamilton Abreu Junior¹  Takashi Muraoka¹  Anderson Ricardo Trevizam¹  Henriqueta Maria Gimenes Fernandes¹ 

[1] ,Universidade de São Paulo Centro de Energia Nuclear na Agricultura Laboratório de Nutrição Mineral de Plantas

关键词: soil;    nickel phytoavailability;    sewage sludge;   

DOI  :  10.1590/S0100-40422008000500009

来源: SciELO

【 摘 要 】

The alteration of soil chemicals and its influence on availability (DTPA extractant method) and phytoavailability (63Ni L-value, isotopic method) of Ni was studied in sewage sludge-amended soil at different pHs. The soil pHs were 4.3, 5.3 and 5.9 and the rates of sewage sludge (SS) 0, 15, 30, 45 and 60 Mg ha-1. The chemical and physicochemical soil characteristics were altered by the SS rate and increased the Ni availability and phytoavailability. The isotopic method (63Ni L-value) was more efficient in predicting the Ni phytoavailability that the Ni-DTPA extractant in soil pHs 5.3 and 5.9.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License