NITROGEN MINERALIZATION AFTER SEWAGE SLUDGE APPLICATIONS TO FOUR CORN CROPS

被引:3
作者
Boeira, Rita Carla [1 ]
Bettanin Maximiliano, Viviane Cristina [1 ]
机构
[1] Embrapa Meio Ambiente, BR-13820000 Jaguariuna, SP, Brazil
来源
REVISTA BRASILEIRA DE CIENCIA DO SOLO | 2009年 / 33卷 / 01期
关键词
biosolid; nitrate; ammonium; residual effect; pH; N mineralization potential; SOIL; LATOSOL; YIELD;
D O I
10.1590/S0100-06832009000100022
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
The available N in sewage sludge-amended soils is one of the restrictive factors for residue application in great amounts. This criterion must be considered in regulations for agricultural use of sewage sludge to avoid environmental pollution of soil and water bodies. The availability of mineral N from native soil organic-N is not considered in the calculation of the maximum rate of sewage sludge application, when these residues are applied for the first time, and this procedure is usual in the mineral fertilizer recommendations. Continuous sewage-sludge applications to soils may however cause cumulative residual effects on mineral N generation, which would imply in specific regulations for re-applications in the same area. The purpose of this study was to verify the potential availability of mineral N in a Latossol under corn previously treated with sewage sludge. The soil samples (0-0.20 m) for this study were collected in a field experiment in Jaguariuna (Sao Paulo State, Brazil), between 1999 and 2002, where the treatments consisted of four consecutive applications, with a total application of 0; 14,716; 29,432; 58,864 and 117,728 kg ha(-1) of urban sludge from the Franca sewage treatment plant Franca and 0; 22,700; 45,400; 90,800 and 181,600 kg ha(-1) of industrial and urban sludge from the Barueri sewage treatment plant. After sampling, the treatments were incubated for 15 weeks in a laboratory. At the beginning of incubation, a residual effect of previous applications was observed on organic N and nitrate accumulation. At the end of the incubation period, the net inorganic N accumulation increased in the soil and pH had decreased, both proportional to the rates of organic N applied previously as sludge in the field. The N mineralization potential estimated by the single exponential model was 28 mg kg(-1) for soil without sludge, and ranged from 28 to 100 mg kg(-1) for soil treated with Franca sludge, and from 40 to 113 mg kg(-1) for soil treated with Barueri sludge. It was concluded that N residual effects must be considered prior to sewage sludge re-application to a same soil. The N mineralization potential of soil and sewage sludge as well as nitrate accumulation in the soil profile have to be determined to calculate adequate sludge rates.
引用
收藏
页码:207 / 218
页数:12
相关论文
共 35 条
[1]   Sewage sludge doses and heart-of-palm yield in peach palm [J].
Alves Bovi, Marilene Leao ;
Godoy, Gentil, Jr. ;
da Costa, Eduardo Antonio Drolhe ;
Berton, Ronaldo Severiano ;
Spiering, Sandra Heiden ;
Armas Vega, Fernando Vinicius ;
de Aguiar Rodrigues Cembranelli, Matheus ;
Baca Maldonado, Carlos Alberto .
REVISTA BRASILEIRA DE CIENCIA DO SOLO, 2007, 31 (01) :153-166
[2]   Impact of sewage sludge application on soil biological characteristics [J].
Banerjee, MR ;
Burton, DL ;
Depoe, S .
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 1997, 66 (03) :241-249
[3]   Nitrogen mineralization in a tropical soil amended with sewage sludges [J].
Boeira, RC ;
Ligo, MAV ;
Dynia, JF .
PESQUISA AGROPECUARIA BRASILEIRA, 2002, 37 (11) :1639-1647
[4]   Organic carbon and nitrogen stocks, pH and bulk density of a latosol after three sewage sludge applications [J].
Boeira, Rita Carla ;
de Souza, Manoel Dornelas .
REVISTA BRASILEIRA DE CIENCIA DO SOLO, 2007, 31 (03) :581-590
[5]  
CAMARGO OA, 1986, IAC B TECNICO, V106
[6]  
*COMP TECN SAN AMB, 1999, MAN TECN, P4230
[7]   Modelling the risk of nitrate leaching from two soils amended with five different biosolids [J].
Corrêa, RS ;
White, RE ;
Weatherley, AJ .
REVISTA BRASILEIRA DE CIENCIA DO SOLO, 2005, 29 (04) :619-626
[8]   Effect of sewage sludge on the fertility of a Paleudult soil cultivated with sugarcane [J].
da Silva, FC ;
Boaretto, AE ;
Berton, RS ;
Zotelli, HB ;
Pexe, CA ;
Bernardes, EM .
PESQUISA AGROPECUARIA BRASILEIRA, 2001, 36 (05) :831-840
[9]  
Barbosa GMD, 2007, REV BRAS CIENC SOLO, V31, P601, DOI 10.1590/S0100-06832007000300020
[10]   Nitrate leaching in a Typic Haplustox planted with mayze after successive applications of sewage sludge [J].
Dynia, Jose Flavio ;
de Souza, Manoel Dornelas ;
Boeira, Rita Carla .
PESQUISA AGROPECUARIA BRASILEIRA, 2006, 41 (05) :855-862