From theory to practice: using canopy reflectance to determine sidedress N rate in potatoes

F.K. van Evert; D.A. van der Schans; W.C.A. van Geel; J.T. Malda; V. Vona

From theory to practice: using canopy reflectance to determine sidedress N rate in potatoes

In: Precision agriculture '13

Authors:

F.K. van Evert

F.K. van Evert ¹PPO/PRI, Wageningen UR, P.O. Box 16, 6700 AA Wageningen, the Netherlands; frits.vanevert@wur.nl

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D.A. van der Schans

D.A. van der Schans ¹PPO/PRI, Wageningen UR, P.O. Box 16, 6700 AA Wageningen, the Netherlands; frits.vanevert@wur.nl

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W.C.A. van Geel

W.C.A. van Geel ¹PPO/PRI, Wageningen UR, P.O. Box 16, 6700 AA Wageningen, the Netherlands; frits.vanevert@wur.nl

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J.T. Malda

J.T. Malda ²ALTIC, P.O. Box 135, 8250 AC Dronten, the Netherlands

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V. Vona

V. Vona ²ALTIC, P.O. Box 135, 8250 AC Dronten, the Netherlands

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Type:: Chapter

Pages:: 119–127

DOI:: https://doi.org/10.3920/9789086867783_015

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In potatoes in the Netherlands, more than 40 kg N/ha can be saved on average relative to current practice with a canopy reflectance-based N sidedress system. Farmers report several barriers to adoption of the system. The work described here seeks to remove these barriers through additional experiments. The results show that the sidedress system can be used with various cultivars of ware and starch potatoes, on sandy and clay soils. The results further show that the N-Sensor can be used as is and that the CropCircle can be used after modification of its output. Finally, on-farm comparisons show that the canopy reflectance-based N sidedress system consistently results in yields that are at least as good as those obtained in recommended practice and saves N. It is concluded that the canopy reflectance-based N sidedress system is now ready for practical use in potatoes.

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Precision agriculture '13

E-Book ISBN:: 9789086867783

Publisher:: Wageningen Academic

Print Publication Date:: 01 Nov 2013

Subjects
- Life Sciences
  - General
  - Agriculture & Environment

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From theory to practice: using canopy reflectance to determine sidedress N rate in potatoes

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Precision agriculture '13

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