How spatial and temporal variability can affect fertilization trial results

A. CastrignanÃ²; G. Buttafuoco; M. Pisante; A.V. Vonella

How spatial and temporal variability can affect fertilization trial results

äºPrecision Agriculture â05

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A. CastrignanÃ²

A. CastrignanÃ² ¹Agronomic Research Institute, Via C. Ulpiani, 5 - 70125 Bari, Italy
annamaria.castrignano@tin.it

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G. Buttafuoco

G. Buttafuoco ²CNR-Institute for Mediterranean Agricultural and Forest Systems, Via Cavour - Rende, CS, Italy
buttafuo@ieif.cs.cnr.it

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M. Pisante

M. Pisante ³University of Teramo, Via Spagna 1 - 64023 Mosciano SantâAngelo (Te), Italy
pisante@unite.it

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A.V. Vonella

A.V. Vonella ¹Agronomic Research Institute, Via C. Ulpiani, 5 - 70125 Bari, Italy

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Page Range:: 759â768

DOI:: https://doi.org/10.3920/978-90-8686-549-9_093

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The objectives of this paper were to study the influence of nitrogen fertilization on crop production using a linear mixed effects model with a first order continuous autoregressive correlation structure.

On a 2-ha field, the most relevant soil properties were determined. Four fertilizer treatments were applied in a completely randomised block design with four replications (blocks) and repeated crop measurements were made in three crop seasons. The most relevant sources of variation in wheat production might not be ascribed to management of soil fertilization but to soil intrinsic variation and between-season variability. More advanced methods of statistical analysis need to be used to separate the residual error from error sources.

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Precision Agriculture â05

ISBN:: 9789086865499

åºçç¤¾:: Wageningen Academic

å°å·åºçæ¥æ:: 24 Oct 2005

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How spatial and temporal variability can affect fertilization trial results

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