| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 84.83 KB | Adobe PDF | |||
| 166.15 KB | Adobe PDF |
Orientador(es)
Resumo(s)
In the NW region of Portugal a very intensive dairy farming system has
been developed based on two silage crops per year (maize plus a winter
crop), which has important risks of nitrate leaching losses during the
winter season. These soils receive N inputs as high as 600-730 kg N ha
-1
yr
-1
resulting from two applications of dairy-cattle slurry just before
sowing each crop, and 220-300 kg N ha
-1
yr
-1
from mineral fertilizers
(Trindade et al., 1997). The objectives of our study were to evaluate the
effect of cattle-slurry rate and time of application on nitrate-N
concentration of drainage water during the winter crop (Lolium
multiflorum Lam.) growth period.
Descrição
Palavras-chave
Cattle cattle-slurry
Contexto Educativo
Citação
Trindade H., Pereira J., Coutinho J., Moreira N., 2006. Effect of time and rate of cattle-slurry application on nitrate concentration of drainage water in a double-cropping forage system. In: Søren O. Petersen (Ed.). Technology for recycling of manure and organic residues in a whole-farm perspective. Vol. II, DIAS report no. 123, DK, ISBN 87-88976-99-8, pp. 273-276.