Using High-Resolution Satellite Imaging to Evaluate Nitrogen Status of Winter Wheat
- 17 October 2007
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Plant Nutrition
- Vol. 30 (10), 1669-1680
- https://doi.org/10.1080/01904160701615533
Abstract
Nitrogen (N) applications often increase crop yields significantly, but N needs vary spatially across fields and landscapes. The color of the wheat plant is sensitive to N status and may provide a means to accurately predict N fertilizer rates matching spatial variability. Previous researches have reported that remote sensing may contribute to N management decisions by collecting spatially dense information. The objective of this study was to determine the feasibility of using high-resolution satellite imaging for evaluating N status of winter wheat in the North China Plain. High-resolution images from a QuickBird satellite were taken on April 1, 2002 at booting stage of wheat with multi-spectral wavelengths (blue, green, red, and near-infrared). Correlation analyses indicated that all the broadband indices derived from the satellite images correlated well with sap nitrate concentration, SPAD readings, total N concentration, and aboveground biomass. The individual band reflectance values R, G, B correlated well with sap nitrate concentration, SPAD readings, total N concentration, and aboveground biomass. These results demonstrated the potential of using new generation high-resolution satellite imaging for large area wheat N status diagnosis.Keywords
This publication has 13 references indexed in Scilit:
- Synchronizing N Supply from Soil and Fertilizer and N Demand of Winter Wheat by an Improved Nmin MethodNutrient Cycling in Agroecosystems, 2006
- Optimal Rates of Nitrogen Fertilization for a Winter Wheat-Corn Cropping System in Northern ChinaCommunications in Soil Science and Plant Analysis, 2004
- Use of Digital Camera to Assess Nitrogen Status of Winter Wheat in the Northern China PlainJournal of Plant Nutrition, 2004
- Mapping near‐surface soil moisture with RADARSAT‐1 synthetic aperture radar dataWater Resources Research, 2004
- Quantitative Approaches for Using Color Infrared Photography for Assessing In‐Season Nitrogen Status in Winter WheatAgronomy Journal, 2003
- Calibrating Corn Color from Aerial Photographs to Predict Sidedress Nitrogen NeedAgronomy Journal, 2002
- Use of reflectance measurements for the early detection of N, P, Mg, and Fe deficiencies in Zea mays L.Journal of Plant Nutrition and Soil Science, 2001
- Remote sensing of chlorophyll concentration in higher plant leavesAdvances in Space Research, 1998
- Red and photographic infrared linear combinations for monitoring vegetationRemote Sensing of Environment, 1979
- Derivation of Leaf‐Area Index from Quality of Light on the Forest FloorEcology, 1969