Analysing the effect of paddy rice variety on fluorescence characteristics for nitrogen application monitoring. Issue 6 (27th June 2018)

• Record Type: Journal Article
• Authors: Shen, Chaoyong; Feng, Zhongke; Zhou, Daoqin
• Is Part Of: Royal Society open science. Volume 5:Issue 6(2018)
• Publication Date: 2018-06-27
• Subjects: laser-induced fluorescence -- nitrogen levels -- Oryza sativa varieties -- multi-variate analysis; Science -- Periodicals; 500
• DOI: 10.1098/rsos.180485
• Languages: English
• ISSNs: 2054-5703

Abstract

Abstract : Paddy rice is one of the most important cereal crops worldwide, so it is very important to accurately monitor its growth status and photosynthetic efficiency. The nitrogen (N) level is a key factor closely related to crop growth. In this study, laser-induced fluorescence (LIF) technology combined with multi-variate analysis was applied to investigate the effect of paddy rice variety on N fertilizer level monitoring. Principal components analysis was conducted to extract the variables of the main fluorescence characteristics to identify N levels. Experimental results demonstrated that no nitrogen fertilizer can be completely identified for each paddy rice variety. In addition, other N levels can also be well classified based on the fluorescence characteristics. The relationship between the fluorescence ratio (F735/F685 : F735, and F685 denote the fluorescence intensity at 735 nm, and 685 nm, respectively) and leaf N content of different paddy rice varieties is also discussed. Experimental results revealed that LIF technology is an effective method of monitoring the N fertilizer and leaf biochemical components of paddy rice.