Variability of Micro-elevation, Yield, and Protein Content within a Transplanted Paddy Field

Variability of Micro-elevation, Yield, and Protein Content within a Transplanted Paddy Field Due to the nature of waterlogged fields used for rice production, we hypothesized that micro-elevation (micro-relief, micro-topography, or differences in elevation) is an important factor for site-specific management within rice fields. A 0.5-ha transplanted and weed-free paddy field was selected as the observation site, where there was micro-elevation in a range of 100 mm within the field. Combine-monitored grain yield and the surveyed micro-elevation were compared at 96 locations in the field, and 60 hand-taken grain samples were analysed for protein content. Grain yield and protein content showed significant negative correlations with micro-elevation (r=-0.50*** and -0.67***, respectively), indicating that at lower elevations, grain yield increased gradually with protein content. Spatial variation in yield and protein content was attributed to availability of water and nutrient uptake at locations with different micro-elevation. Therefore, micro-elevation is expected to be one of the important factors for managing spatial variation in a small paddy field. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precision Agriculture Springer Journals

Variability of Micro-elevation, Yield, and Protein Content within a Transplanted Paddy Field

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2005 by Springer Science+Business Media, Inc.
Subject
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
ISSN
1385-2256
eISSN
1573-1618
D.O.I.
10.1007/s11119-004-0685-9
Publisher site
See Article on Publisher Site

Abstract

Due to the nature of waterlogged fields used for rice production, we hypothesized that micro-elevation (micro-relief, micro-topography, or differences in elevation) is an important factor for site-specific management within rice fields. A 0.5-ha transplanted and weed-free paddy field was selected as the observation site, where there was micro-elevation in a range of 100 mm within the field. Combine-monitored grain yield and the surveyed micro-elevation were compared at 96 locations in the field, and 60 hand-taken grain samples were analysed for protein content. Grain yield and protein content showed significant negative correlations with micro-elevation (r=-0.50*** and -0.67***, respectively), indicating that at lower elevations, grain yield increased gradually with protein content. Spatial variation in yield and protein content was attributed to availability of water and nutrient uptake at locations with different micro-elevation. Therefore, micro-elevation is expected to be one of the important factors for managing spatial variation in a small paddy field.

Journal

Precision AgricultureSpringer Journals

Published: Dec 28, 2004

References

  • Yield gap analysis in relation to soil properties in direct-seeded flooded rice
    Casanova, D.; Goudriaan, J.; Bouma, J.; Epema, G. F.
  • Effect of drainage on yield and dry matter partitioning in irrigated rice
    Dingkuhn, M.; Le Gal, P.-Y.
  • Spatial variability of acid sulphate soils in the Plain of Reeds, Mekong Delta, Vietnam
    Husson, O.; Verburg, P. H.; Phung, M. T.; Van Mensvoort, M. E. F.
  • Water management for rice cultivation on acid sulphate soils in the Plain of Reeds, Vietnam
    Husson, O.; Hanhart, K.; Phung, M. T.; Bouma, J.

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