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

来源：

PROCEEDINGS OF THE XIX INTERNATIONAL GRASSLAND CONGRESS: GRASSLAND ECOSYSTEMS: AN OUTLOOK INTO THE 21ST CENTURY | 2001年

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

页码：207 / 208

页数：2

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