DOI: 10.1016/j.jag.2014.03.018
Scopus记录号: 2-s2.0-84904472649
论文题名: Assessment of rice leaf chlorophyll content using visible bands at different growth stages at both the leaf and canopy scale
作者: Saberioon M ; M ; , Amin M ; S ; M ; , Anuar A ; R ; , Gholizadeh A ; , Wayayok A ; , Khairunniza-Bejo S
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 32, 期: 1 起始页码: 35
结束页码: 45
语种: 英语
英文关键词: Conventional digital camera
; Image analysis
; Low altitude remote sensing
; Nitrogen
; Principal component analysis
; Rice
Scopus关键词: assessment method
; chlorophyll a
; farming system
; image analysis
; image resolution
; leaf
; nitrogen
; photography
; principal component analysis
; rice
; spatial resolution
; spatiotemporal analysis
; vegetation
英文摘要: Nitrogen is an important variable for paddy farming management. The objectives of this study were todevelop and test a new method to determine the status of nitrogen and chlorophyll content in rice leaf by analysing and considering all visible bands derived from images captured using a conventional digitalcamera. The images from the 6-pannel leaf colour chart were acquired using Basler Scout scA640-70fc under light-emitting diode lighting, in which principal component analysis was used to retain the lower order principal component to develop a new index. Digital photographs of the upper most collared leaf of rice (Oriza sativa L.), grown over a range of soils with different nitrogen treatments, were processed into 11 indices and IPCAthrough six growth stages. Also a conventional digital camera mounted to an unmanned aerial vehicle was used to acquire images over the rice canopy for the purpose of verification. The result indicated that the conventional digital camera at the both leaf (r=-0.81) and the canopy (r=0.78) scale could be used as a sensor to determine the status of chlorophyll content in rice plants through different growth stages. This indicates that conventional low-cost digital cameras can be used for determining chlorophyll content and consequently for monitoring nitrogen content of the growing rice plant, thus offering a potentially inexpensive, fast, accurate and suitable tool for rice growers. Additionally, resultsconfirmed that a low cost LARS system would be well suited for high spatial and temporal resolution images and data analysis for proper assessment of key nutrients in rice farming in a fast, inexpensive and non-destructive way. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79796
Appears in Collections: 气候变化事实与影响
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作者单位: Smart Farming Technology Research Centre, Faculty of Engineering, Universiti Putra Malaysia, Seri Serdang 43400, Selangor, Malaysia; Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Seri Serdang 43400, Selangor, Malaysia; Department of Soil Science and Soil Protection, Czech University of Life Sciences Prague, 165 21 Prague, Czech Republic; Department of Biological and Agricultural Engineering, Faculty of Engineering, Universiti Putra Malaysia, Seri Serdang 43400, Selangor, Malaysia
Recommended Citation:
Saberioon M,M,, Amin M,et al. Assessment of rice leaf chlorophyll content using visible bands at different growth stages at both the leaf and canopy scale[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,32(1)