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Sammanfattning

In order to describe the degree of within-field spatial variation of phosphorus, a spatial key indicator for P was developed. It was applied to data at two different geographical scales. In the first case, a general overview is given of the within-field phosphorus variability in central Sweden based on a very large number of soil analyses. In the second case, detailed data from nine project farms were compiled and specific examples are discussed in-depth. The economic potential of variable-rate P fertilisation is assessed. The examples show that the commonly used, traditional fertiliser recommendations lead to substantial over-application of phosphorus in parts of the fields. This, as well as the economic consequences, is visualised by the key indicator.

Nyckelord

economic model; phosphorus; spatial key indicator; within-field variability

Publicerad i

Titel: Precision agriculture '05
Utgivare: Wageningen academic publishers

Konferens

5th European Conference on Precision Agriculture/2nd European Conference Precision Livestock Farming

SLU författare

  • Nyberg, Anna

    • Institutionen för markvetenskap, Sveriges lantbruksuniversitet

  • Linden, Börje

    • Institutionen för markvetenskap, Sveriges lantbruksuniversitet

UKÄ forskningsämne

Jordbruksvetenskap

Publikationens identifierare

  • DOI: https://doi.org/10.3920/978-90-8686-549-9_119
  • ISBN: 90-76998-69-8

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/7304