Please use this identifier to cite or link to this item:

Title: Phosphorus dynamics in permanent pastures: the differential fertilizing and the animal effects
Authors: Serrano, João M.
Peça, José M.
Marques da Silva, José R.
Moral, Francisco
Terrón, J.
Keywords: Balance
Precision agriculture
Issue Date: 2010
Citation: Serrano, J. M.; Peça, J. O.; Marques da Silva, J.; Moral, F.; Terrón, J. (2010). Phosphorus dynamics in permanent pastures: the differential fertilizing and the animal effects. Proceedings of “15th WORLD FERTILIZER CONGRESS OF THE INTERNATIONAL SCIENTIFIC CENTRE FORFERTILIZERS (CIEC), 29 August - 2 September, Bucharest, Romania, 10 p.
Abstract: The general objective of this study was to evaluate the soil phosphate balance over 3 years in a permanent bio-diverse pasture, grazing sheep, and submitted to annual and differential phosphate fertilization. The soil and pasture samples were geo-referenced with RTK GPS and taken in a 6 ha field. This procedure was carried out, each year, from March to May, according to the vegetative growth of the pasture. In October of each year the parcel was fertilized in a differentiated manner, as a function of soil phosphate concentration at the end of the pasture growth cycle (May-June). The phosphorus balance maps in each year were obtained in ARCGIS 9.3 considering: i) the soil phosphate concentration maps; ii) the phosphorus average annual extraction considering the pasture yield; and iii) the differential application maps. The results confirm the difficulties in implementing Precision Agriculture in permanent pastures due to significant temporal variability of soil phosphate concentration and pasture dry matter yield. The results also show the complexity of soil phosphorus dynamics in pastures involving two biological systems: plant and animal, under Mediterranean conditions. The presence of grazing animals adds a notable short-range spatial variation in nutrients that generally arises from heterogeneous excreta depositions.
Type: lecture
Appears in Collections:MED - Artigos em Livros de Actas/Proceedings
ERU - Artigos em Livros de Actas/Proceedings

Files in This Item:

File Description SizeFormat
2010_Roménia_PDynamic.pdf2.16 MBAdobe PDFView/OpenRestrict Access. You can Request a copy!
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois