Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.19/1057
Título: Nitrogen mineralization in soils receiving different rates of cattle-slurry and cropped with forage maize
Autor: Pereira, J.
Trindade, H.
Coutinho, J.
Moreira, N.
Palavras-chave: Cattle-slurry
maize forage
N mineralization
Data: 2006
Citação: Pereira J., Trindade H., Coutinho J., Moreira N., 2006. Nitrogen mineralization in soils receiving different rates of cattle-slurry and cropped with forage maize. Grassland Science in Europe 11, 724-726.
Resumo: The quantification and the time-course of organic nitrogen release from slurry applied at sowing of maize grown for silage is of major importance to increase the efficient use of slurry-N and to reduce environmental impacts. The objective of this work was to quantify the net N mineralization measured in the 0-30 cm soil layer during the forage maize growth period, when cattle slurry was applied at sowing to supply 340 (T1), 190 (T2) and 0 (T3) kg total N ha -1 . The experiment was carried out during 1999 in the NW region of Portugal. Net mineralization rates were significantly different and reached high values, being a relevant source of N for the plants. During the forage maize crop net mineralization represented 401, 281 and 174 Kg N ha -1 respectively on treatments T1, T2 and T3, values that correspond to average net N mineralization rates of 1.3, 0.9 and 0.6 mg N kg -1 soil day -1 . The forage maize dry matter yields on these treatments reached 22, 19 and 13 t ha -1 , respectively for T1, T2 and T3.
Peer review: yes
URI: http://hdl.handle.net/10400.19/1057
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