Journal of Food, Agriculture and Environment

Vol 11, Issue 2,2013
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Assessment of colour indices derived from conventional digital camera for determining nitrogen status in rice plants 


Mohammad Mehdi Saberioon *, Mohd. Soom Mohd. Amin, Wayayok Aimrun, Asa Gholizadeh, Anuar Abd. Rahim Anuar

Recieved Date: 2013-01-20, Accepted Date: 2013-04-28


Concerns over the use of nitrogen have increased due to the increase in fertilizer costs and environmental pollution from excess nitrogen applications in farms and paddy fields. This study assessed colour indices derived from images captured by two different kinds of conventional digital cameras (namely, Panasonic Lumix DMC-TZ10 and Basler Scout scA640-70fc) to determine the status of nitrogen in rice leaves. Thus, a randomized complete block design was conducted at Universiti Putra Malaysia’s Experimental field in 2012. Digital images of the upper most collared leaf of rice (Oriza sativa L.), grown over a range of soil N treatments, were processed into twenty seven most common colour indices through six growth stages. The results indicated that both cameras could be used as sensors to determine the status of nitrogen in rice plants. In addition, there were strong relationships between most indices, especially colour indices which are associated with green and SPAD measurement values. However, the strongest relationship was found between green and Kawashima index, with R2= 0.561 (p > 0.001) and R2 = 0.546 (p > 0.001), respectively. This indicates that conventional low-cost digital cameras can be used for determining Nitrogen content in rice leaf, and also offers a potentially inexpensive, fast, accurate and suitable tool for small farms. 


Colour indices, conventional digital camera, rice, nitrogen, remote sensing image

Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 2
Category: Agriculture
Pages: 655-662

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :