Pig slurry and nutrient accumulation and dry matter and grain yield in various crops

Revista Brasileira de Ciência do Solo

Cledimar Rogério Lourenzi²  Carlos Alberto Ceretta¹  Gustavo Brunetto¹  Eduardo Girotto¹  Tadeu Luis Tiecher¹  Renan Costa Beber Vieira¹  Adriana Cancian¹  Paulo Ademar Avelar Ferreira¹ 

[1] ,Federal University of Santa Maria Department of Soil Science Graduate Studies Program in Soil ScienceSanta Maria RS ,Brazil

关键词: manure;    yield;    crop rotation;    dejeto;    produtividade;    rotação de culturas;   

DOI  :  10.1590/S0100-06832014000300027

来源: SciELO

【 摘 要 】

Pig slurry (PS) represents an important nutrient source for plants and using it as fertilizer makes greater nutrient cycling in the environment possible. The aim of this study was to assess how PS application over a period of years can affect grain yield, dry matter production and nutrient accumulation in commercial grain and cover crops. The experiment was carried out in an experimental area of the Universidade Federal de Santa Maria, in Santa Maria, RS, Brazil, from May 2000 to January 2008. In this period, 19 grain and cover crops were grown with PS application before sowing, at rates of 0, 20, 40 and 80 m³ ha-1. The highest PS rate led to an increase in nutrient availability over the years, notably of P, but also of nutrients that are potentially toxic to plants, especially Cu and Zn. The apparent recovery of nutrients by commercial grain and cover crops decreased with the increasing number of PS applications to the soil. Accumulated dry matter production of the crops and maize grain yield were highest at an annual application rate of 80 m³ ha-1 PS. However, common bean yield increased up to 20 m³ ha-1 PS, showing that the crop to be grown should be considered to define the application rate.

【 授权许可】

CC BY   
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