INTERACTION OF DIGESTED SEWAGE-SLUDGE AND AMMONIUM-SULFATE OR UREA IN CORN FERTILIZATION

被引:0
|
作者
DEHERAS, SG [1 ]
NIJENSOHN, L [1 ]
MAFFEI, JA [1 ]
机构
[1] FAC CIENCIAS AGR CHACRAS DE CORIA,CONSEJO NACL INVEST CIENT & TECN,CATEDRA EDAFOL,MENDOZA,ARGENTINA
来源
AGROCHIMICA | 1991年 / 35卷 / 5-6期
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D O I
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中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In order to study the influence of a digested sewage sludge (DSS) on the fertilizer value of ammonium sulphate (AS) and urea (U) a glasshouse trial was carried out with maize on an alluvial N deficient irrigated soil. Two parallel series were established: (RI), exact replacement of the lost water and (LI), 3 lixiviations during the trial. The addition of (DSS) to (AS) or (U) showed increased dry matter yields over the simple treatments, specially in the (LI) serie. The maximum <<utilization efficiency>> for N and P corresponded to (AS + DSS). Increased Zn and Cu dry matter contents was attributed to (DSS) additions.
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页码:422 / 433
页数:12
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