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- Title
IMPACTO AMBIENTAL DEL PURÍN DE CERDO EMPLEADO COMO FERTILIZANTE.
- Authors
Delgado Arroyo, María del Mar; de Imperial Hornedo, Rosario Miralles; Martín Sánchez, José Valero
- Abstract
Pig slurries improve physical, chemical and microbiological properties of soils particularly in agricultural soils affected by an intensive use, consequently with scarce organic matter content. The addition of these products to the soils favors these characteristics and improves crop production (due to their nutrients content) nevertheless; they should be incorporated with caution because of risk of pathogens in crops. This work is aimed to determine the dose of optimum application of pig slurry to the soil as an organic fertilizer minimizing its polluting effects. The study was conducted at the National Institute for Agricultural Research in Madrid. Olive nursery trees (cv. Cornicabra Olea europea L.) were grown in 12 kg pot. The treatments applied were as follow: Urea (46%) 100 kg N/ha, Pig slurry was applied at rates of 100 kg N/ha, 200 kg N/ha and 300 kg N/ha and Control without both urea fertilizer and pig slurry. The phonologies variables studied were: nursery tree height, trunk diameter and shoot length, and the main agronomic parameters such us: pH, E.C., N, P, oxidable carbon, were analyzed too. The study was conducted during 2002 to 2004 and it was measured monthly the nursery tree height, the trunk diameter and the shoot length and annually the agronomic parameters. The results show that the period of greater tree height from olive nursery tree was in spring in all treatments and the tree height was higher for urea. Also it can see an increment with the doses 100 kg N/ha and 200 kg N/ha of pig slurry for the trunk diameter and the shoot length parameters respectively. Finally the results obtained in this test, confirm the possibility to use pig slurry as fertilizer and conservation of olive soil with a light increment of agronomic parameter studied.
- Publication
Ingeniería de Recursos Naturales y del Ambiente, 2009, Issue 8, p62
- ISSN
1692-9918
- Publication type
Article