caa a22 4500 445864834 CHVBK 20180317145454.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s11119-010-9170-9 doi (NATIONALLICENCE)springer-10.1007/s11119-010-9170-9 Spatial and temporal stability of soil phosphate concentration and pasture dry matter yield [Elektronische Daten] [João Serrano, José Peça, José Marques da Silva, Shakib Shahidian] Several methods are described that could be used by a farm manager to define the spatial and temporal stability within a field from a series of yield maps. A quantitative analysis of soil phosphate concentration and pasture dry matter yield data over 4years (2004-2007) were investigated to identify the spatial and temporal stability in a 6ha pasture field. The data were combined into two maps that characterize the spatial and temporal variation recorded over the 4years. The two maps were then combined to create a single map with five management classes, each with different characteristics that can have an impact on the way the field is managed. These categories are: high yielding and stable, high yielding and moderately stable, low yielding and stable, low yielding and moderately stable and unstable. The unstable class represents 83 and 93% of the total area with regard to soil phosphate concentration and pasture dry matter yield, respectively. Results from this study show that the significant temporal stability found cancels out over time, leaving a relatively homogenous map of spatial variation. The implication of the findings is that each pasture field should be managed according to the current year's conditions. These results also justify a further study that evaluates the soil phosphorous dynamics under Mediterranean conditions. Springer Science+Business Media, LLC, 2010 Management classes nationallicence Pasture dry matter yield nationallicence Phosphates nationallicence Spatial variation maps nationallicence Temporal stability maps nationallicence Serrano João ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut Peça José ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut Marques da Silva José ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut Shahidian Shakib ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut Precision Agriculture Springer US; http://www.springer-ny.com 12/2(2011-04-01), 214-232 1385-2256 12:2<214 2011 12 11119 https://doi.org/10.1007/s11119-010-9170-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11119-010-9170-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Serrano João ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut NATIONALLICENCE 700 1- Peça José ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut NATIONALLICENCE 700 1- Marques da Silva José ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut NATIONALLICENCE 700 1- Shahidian Shakib ICAAM, Rural Engineering Department, University of Évora, P.O. Box 94, 7002-554, Évora, Portugal aut NATIONALLICENCE 773 0- Precision Agriculture Springer US; http://www.springer-ny.com 12/2(2011-04-01), 214-232 1385-2256 12:2<214 2011 12 11119 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer