Nondestructive and rapid estimation of hardwood foliar nitrogen status using the SPAD-502 chlorophyll meter

Chang, Scott X.; Robison, Daniel J.

doi:10.1016/s0378-1127(03)00004-5

Cited by 153 publications

(122 citation statements)

References 20 publications

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“…Variation of the leaf position (Neilsen et al, 1995), the time of sampling (Loh et al, 2002) and the leaf thickness (Jifon et al, 2005) are suspected factors influencing the relationship between the SPAD reading values and the leaf N content. Indeed, this relationship can be improved by calculating the specific leaf weight or considering the leaf N content per the leaf area unit (Chang and Robison, 2003). Figure 7 shows that as the leaf nitrogen concentration increases, the sensitivity of the SPAD to detect leaf N content decreases.…”

Section: And Discussionmentioning

confidence: 99%

“…An easily available instrument, the chlorophyll meter (eg SPAD-502 chlorophyll meter), is used widely to evaluate the plant chlorophyll content and, hence, to estimate the plant N status and deficiencies and, subsequently, to determine the real-time based need for N fertiliser with introducing a proper calibration (Jifon et al, 2005). Experimental relationships between N concentration and SPAD reading values are expressed with linear (Chang and Robison, 2003) or curvilinear (Dwyer et al, 1995) models depending on the crops, the species, the cultivars and the crop growth stage (Esfahani et al, 2008). In addition, any biotic (eg pests, diseases, weeds) and abiotic stresses (eg drought, heat, cold, salinity) may influence the SPAD reading values and, subsequently, the chlorophyll or N estimates (Balasubramanian et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of canola chlorophyll index and leaf nitrogen under wide range of soil moisture

Meskini-Vishkaee¹,

Mohammadi²,

Neyshabouri³

et al. 2015

International Agrophysics

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A b s t r a c t. The paper presents a study on the effect of soil matric suction on the variation of leaf chlorophyll index and nitrogen concentration of canola. Results showed that chlorophyll index increases exponentially with soil matric suction, especially at the late season of canola growing time. At moderate matric suction (200 and 300 kPa soil suction heads), chlorophyll index remains nearly constant, but in drier soil (matric suction >300 kPa), chlorophyll index increases gradually with time. Despite the variation of the total leaf nitrogen with the soil matric suction, it is similar to the variation of the chlorophyll index, but the results showed that the chlorophyll index -nitrogen concentration curve has a demarcated bi-modal shape. We suggest that 2.7% of nitrogen and 69.8 of the chlorophyll index value represent the upper limit of the chlorophyll meter reliability for estimation of canola nitrogen under a wide range of soil moisture levels. These results confirm that the chlorophyll meter can be used as an effective tool for rapid and non-destructive estimation of the relative chlorophyll and nitrogen content in canola leaves at a wide range of soil moisture content, except for nearly wilting coefficient or extremely high drought stress.

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Section: And Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of canola chlorophyll index and leaf nitrogen under wide range of soil moisture

Meskini-Vishkaee¹,

Mohammadi²,

Neyshabouri³

et al. 2015

International Agrophysics

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show abstract

“…Thus, the leaf chlorophyll content is one of the most significant parameters related to the physiological status of plants. Estimations of chlorophyll contents and related chlorophyll parameters have practical implications since they can be used as an index of nutrient status (Berg and Perkins, 2004;Chang and Robinson, 2003;Moran et al, 2000;Wood et al, 1992), physiological stress (Daas et al, 2008;Datt, 1999;Neufeld et al, 2006;Peguero-Pina et al, 2008;Peñuelas and Filella, 1998) and changes in abiotic factors (Abadía et al, 1996;Gratani et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…In recent decades, chlorophyll meters have been increasingly used in the horticultural sciences as an effective management tool for evaluating nutrient and stress status, and more than 200 scientific studies reporting their usefulness have been published. However, in the field of forestry, research exploring the potential of chlorophyll meters has been more limited, despite significant correlations between chlorophyll indices and chlorophyll and/or N contents (Berg and Perkins, 2004;Chang and Robinson, 2003;Pinkard et al, 2006;Richardson et al, 2002;Sibley et al, 1996;Uddling et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Estimation of chlorophyll in Quercus leaves using a portable chlorophyll meter: effects of species and leaf age

Silla¹,

González-Gil²,

González-Molina³

et al. 2010

Ann. For. Sci.

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“…The portable chlorophyll meter has been widely applied in rapid and non-destructive diagnosis of nitrogen nutrition in rice, maize, wheat, cotton and other field corps [9][10][11][12]. It also had a good performance in application for horticultural plants and xylophyta such as sweet potato, rape, peach, and maple, etc [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Study on Plant Nutrition Indicator Using Leaf Spectral Transmittance for Nitrogen Detection

Yang³

2011

Computer and Computing Technologies in Agriculture IV

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Abstract. The low fertilizer utilization at growing season and environment pollution coursed by unreasonable fertilization are becoming global outstanding problems in agricultural production. Scientific and reasonable fertilization based on rapid and nondestructive plant nutrient detection will be a valuable solution for solving above problems. In this study, spectral transmittance in wavelength ranged from 300 to 1100 nm, chlorophyll content and nitrogen content of rice and cucumber leaves treated with culture solution in five different nitrogen levels were measured. According to the correlation analysis between them, 560, 650, and 720 nm as feature wavelengths and 940 nm as reference wavelength were determined for nitrogen detection. Correlation analysis between 21 spectral feature parameters composed by the transmittance at above wavelength, the leaf chlorophyll content and nitrogen content, and combined with their regression examination indicated that spectral feature parameters of (T940 -T560) / (T940 + T560), log (T940/T560) and log (T940/T650) are useful to conduct plant nutrient diagnosis with less than 8% relative error in rice and cucumber leaves. Therefore, the above spectral feature parameters as plant nitrogen indicators can be used to estimate the chlorophyll content and nitrogen content, furthermore support for non-destructive plant nutrient detection and fertilizer recommendation based on testing soil.

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Nondestructive and rapid estimation of hardwood foliar nitrogen status using the SPAD-502 chlorophyll meter

Cited by 153 publications

References 20 publications

Evaluation of canola chlorophyll index and leaf nitrogen under wide range of soil moisture

Evaluation of canola chlorophyll index and leaf nitrogen under wide range of soil moisture

Estimation of chlorophyll in Quercus leaves using a portable chlorophyll meter: effects of species and leaf age

Study on Plant Nutrition Indicator Using Leaf Spectral Transmittance for Nitrogen Detection

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