Data/hora: 15/06/2024 02:00:08

Provedor de dados: | 21
País: | Germany
Título: | Waste composts as nitrogen fertilizers for forage leys
Autores: | Tontti, Tiina; Nykänen, Arja; Kuisma, Miia.
Data: | 2009
Ano: | 2009
Palavras-chave: | Nutrient turnover.
Resumo: | Two field experiments, conventional grass ley and organic grass-clover ley, were established with barley as a nurse crop in spring 2000 and given either low or high fertilization with mineral fertilizer (Mineral) or composts. The compost types were municipal biowaste (Biowaste), biowaste + sewage sludge (BioSludge) and cattle manure (Manure). Plant yields and nitrogen (N) uptakes were measured for three years and efficiency of N utilization was estimated. In single application of compost, the total N was mainly in organic form and less than 10% was in inorganic form. Along with increasing amount of inorganic N applied in compost, the yield, N uptake and N recovery increased during the application year. The highest compost N recovery in the application year was 12%, found with Biowaste. In the following years the highest N recovery was found where the lowest total N had been applied. Clover performance was improved in the organic grass-clover ley established with BioSludge fertilization, producing total ley yield comparable with Manure compost. High total N application in composts caused high N surplus and low N use efficiency over three years. Generally, moderate compost fertilization is suitable for ley crops when supplemented with mineral N fertilizer or clover N fixation.
Tipo: | Journal paper
Idioma: | Inglês

Identificador:

http://orgprints.org/16627/1/tontti.pdf

Tontti, Tiina; Nykänen, Arja and Kuisma, Miia (2009) Waste composts as nitrogen fertilizers for forage leys. Agricultural and Food Science, 18 (1), pp. 57-75.

urn:ISSN:1795-1895

Editor: | MTT Agrifood Research Finland
Relação: | http://orgprints.org/16627/
Formato: | application/pdf