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Evaluation of the suitability of arable fields for field trials by means of remote sensing |
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| Authors: | G. W. A. M. van der Heijden J. G. P. W. Clevers D. L. C. Brinkhorst-van der Swan |
| Affiliation: | (1) Department of Landsurveying and Remote Sensing, Agricultural University, P.O. Box 339, 6700 AH Wageningen, The Netherlands;(2) Department of Plant Breeding (IVP), Agricultural University, P.O. Box 386, 6700 AJ Wageningen, The Netherlands;(3) Present address: Government Institute for Research on Varieties of Cultivated Plants (RIVRO), P.O. Box 32, 6700 AA Wageningen, The Netherlands |
| Abstract: | Summary The use of aerial photography for mapping the heterogeneity of trial fields was evaluated by comparing the pattern of infrared reflectance of a barley field with its spatial pattern for grain yield.The regression of yield on the infrared reflectance factor of barley appeared to be linear (correlation coefficient of 0.90). The high correlation encountered in this study justified the use of reflectance factors for estimating yield and it rendered aerial photography a good technique for mapping heterogeneity.Two kinds of maps were created in order to locate the heterogeneous parts of the field studied. One map was used for visualizing global heterogeneity and the other for visualizing local heterogeneity. These maps showed that trials performed on this particular field might be improved by using only parts of the field and by altering the shape of the blocks. The latter assertion was confirmed by field trials simulations. |
| Keywords: | Hordeum vulgare L. barley remote sensing aerial photography field heterogeneity |
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