Apparent recovery of surface applied nitrogen fertilizer by a coastcross pasture

被引:0
|
作者
Primavesi, AC [1 ]
Primavesi, O [1 ]
Corrêa, LA [1 ]
Cantarella, H [1 ]
Silva, AG [1 ]
机构
[1] Petrobras SA, Financial Support Agreement Embrapa, BR-13560970 Sao Carlos, SP, Brazil
关键词
ammonium nitrate; Cynodon dactylon cv. Coastcross; pasture; recovery; urea;
D O I
暂无
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Nitrogen recoveries from five levels of urea and ammonium nitrate surface-applied on coastcross pasture, grown on a dark red latosol (Hapludox), in Sao Carlos, SP, Brazil, under tropical altitude climate, were estimated. Significant differences occurred within periods (P<0.05), depending on climatic conditions. Under adequate plant growth conditions, mean N recovery from urea was about 67%, sometimes reaching 80%, of that from ammonium nitrate. Recovery of ammonium nitrate varied from 45 to 68% of applied N.
引用
收藏
页码:207 / 208
页数:2
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