Evaluation of a portable chlorophyll meter to estimate chlorophyll and nitrogen contents in sugar maple (Acer saccharum Marsh.) leaves

Berg, Abby K. van den; Perkins, Timothy D.

doi:10.1016/j.foreco.2004.06.005

Cited by 138 publications

(58 citation statements)

References 26 publications

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“…The significant positive correlation observed between leaf N concentrations and chlorophyll index in northern red oak (Fig. 4) concurs with results of other studies with hardwoods [6,56]. In the present study, CI could explain 72% of the variation in red oak leaf N concentrations.…”

Section: Leaf Physiology and Nutritional Responsessupporting

confidence: 92%

“…We labeled current uptake with ( 15 NH 4 ) 2 SO 4 , which enabled direct quantification of NF compared with NP and their distribution in leaf growth of red oak seedlings. We tested the hypothesis that (1) fertilization increases photosynthetic rates and nutrient uptake in fertilized compared with unfertilized seedlings, and these responses partly explain the greater growth of the former plants, (2) a greater proportion of NF will meet the N demand in leaf growth of fertilized seedlings while unfertilized plants will rely entirely on NP for seasonal leaf growth and, (3) a strong relationship exists between SPAD meter readings with N determined by conventional wet-chemistry indices inferring good predictability of leaf N status with SPAD as noted elsewhere [6,56]. We focused on N because it is the nutrient element most commonly limiting plant growth and because its role in controlling plant growth and metabolism is well understood [7,15].…”

Section: Introductionmentioning

confidence: 84%

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Growth, physiology, and nutrient retranslocation in nitrogen-15 fertilized Quercus rubra seedlings

et al. 2008

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-We evaluated gas exchange, chlorophyll index (CI) using SPAD-502 chlorophyll meter, and leaf nutritional responses in one-year-old northern red oak (Quercus rubra L.) container seedlings transplanted into control (unfertilized) or fertilized (0.86 g N plant −1 ) sand culture and grown in a greenhouse for 90 days. We labeled current nitrogen (N) uptake with ( 15 NH 4 ) 2 SO 4 and directly quantified proportional contributions of N derived from fertilizer (NF) compared with retranslocation or N derived from plant (NP) in leaf growth of red oak seedlings. NF met a greater N demand in leaf growth of fertilized plants while unfertilized seedlings relied entirely on NP for their leaf growth. Fertilization increased leaf dry mass by 67% and new stem dry mass by 253% 90 days after transplanting compared to control seedlings. Specific leaf area (SLA) was not significantly altered but CI increased 90 days after transplanting. Higher leaf N concentration and content in fertilized compared with control seedlings was linked to greater chlorophyll concentrations in the former plants. The higher coefficient of determination (r 2 = 0.72) noted between leaf N concentrations and CI suggests that the SPAD meter could be a useful tool for assessing leaf N status in northern red oak seedlings. Fertilized seedlings exhibited higher net assimilation, stomatal conductance, and transpiration rates compared with controls. Increased seedling growth in response to fertilization was related to maintenance of higher gas exchange and greater nutrient uptake, which could improve outplanting success. fertilization / gas exchange / northern red oak / nitrogen / photosynthesis / retranslocation / SPAD meter Résumé -Croissance, échanges gazeux et réponses nutritionnelles de jeunes semis de Quercus rubra soumis à une fertilisation par ( 15 NH 4 ) 2 SO 4 . Nous avons estimé les échanges gazeux foliaires, un index de teneurs en chlorophylles (IC) avec un chlorophylle-mètre SPAD-502 et les teneurs en nutriments dans les feuilles de jeunes plants de chêne rouge d'Amérique (Quercus rubra L.) âgés d'un an. Les plants ont été transplantés dans du substrat sableux non fertilisé (témoins) ou fertilisé avec 0.86 g N par plante, et cultivés pendant 90 jours sous serre. L'azote apporté par la fertilisation était marqué avec ( 15 NH 4 ) 2 SO 4 et nous avons directement quantifié les contributions à la croissance foliaire de N apporté par la fertilisation (NF) par rapport à celle de N remobilisé depuis les pools de réserve de la plante (NP). NF constituait la fraction la plus importante d'azote foliaire de plants fertilisés, alors que l'azote foliaire des plants non fertilisés était exclusivement constitué de NP. La fertilisation s'est traduite par une augmentation, par rapport aux plantes témoins, de 67 % de la biomasse foliaire et de 253 % de la biomasse de tiges nouvellement formées 90 jours après la transplantation. La surface spécifique des feuilles n'était pas affectée par la fertilisation alors que CI avait significativement augmenté. Des teneur...

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Section: Leaf Physiology and Nutritional Responsessupporting

confidence: 92%

Section: Introductionmentioning

confidence: 84%

Growth, physiology, and nutrient retranslocation in nitrogen-15 fertilized Quercus rubra seedlings

et al. 2008

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“…However, the highest N addition (N 180) significantly decreased of Chl (a+b) at I 40 ( Figure 3). The effects of N addition on chlorophyll were in agreement with the previous findings in suger beet (Shaw et al, 2002;Van den Berg and Perkins, 2004). …”

Section: Leaf Chlorophyll Contentsupporting

confidence: 92%

“…Low concentrations of chlorophyll limit photosynthetic potential directly and lead to a decrease in biomass production in the plants (Molinari et al, 2007;Van den Berg and Perkins, 2004). In this study, the concentrations of leaf Chl (a+b) was significantly influenced by N supply and water treatments in isabgol (p<0.01) (Figure 3).…”

Section: Leaf Chlorophyll Contentmentioning

confidence: 62%

Effects of water and nitrogen supply on growth, water-use efficiency and mucilage yield of isabgol (Plantago ovata Forsk)

Rahimi

Sayadi

Dashti

et al. 2013

J. Soil Sci. Plant Nutr.

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A two-way factorial experiment based on a randomized complete design (RCD) with four replications was used to compare four levels of N supply including control (N 0 ), 60(N 60 ), 120(N 120 ) and 180(N 180 ) mg N per Kg soil and four different water supply including 100(I 100 ), 80(I 80 ), 60(I 60 ) and 40(I 40 ) % FC on growth, water-use efficiency and mucilage yield of isabgol. Under I 40 , higher N addition led to a significant decrease in root and shoot DM. N addition increased root and shoot biomass especially in I 80 treatment followed by I 60 . The highest (1.71 g plant -1 ) and the lowest (0.42 g plant -1 ) seed yield of isabgol observed in I 100 at N 120 and I 40 at N 120, respectively. The concentration of soluble sugar increased with N supply at I 100 and I 40 . Water stress led to an increase in proline levels, particularly in the N supply treatments. The addition of N tended to reduce the positive effect of water stress on proline content. Seed water use efficiency (WUEg) of isabgol decreased with the increase in drought stress. N supply significantly increased WUEg from N 0 to N 120 with no significant differences between N 60 and N 120 and then significantly decreased by supplying N 180 . Mucillage water use efficiency (WUEm) is also increased linear in all watering regime at all N supply.

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“…Strong relationship between CCI and nitrogen was also reported in sugar maple (Acer saccharum Morsh.) (Van den Berg and Perkins 2004), and rice (Oryza sativa L.) (Peng et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Non-destructive estimation of chlorophyll and nitrogen content in leaf ofRosa damascena(Mill)

Singh¹,

Prasad²

2012

Soil Science and Plant Nutrition

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Chlorophyll (Chl) and nitrogen (N) status of leaves provide valuable information about the physiological condition of plants. The conventional methods for measuring Chl and N contents in leaves are destructive, costly, time-consuming, and do not allow repetitive measurement of the same sample. The Damask Rose (Rosa damascena Mill) is an important aromatic crop in the western Himalaya region in India. Generally, flower yield and oil yield of the Damask rose are correlated with nitrogen, phosphorus, and potassium (NPK) levels in the leaf at the bud development stage. The dynamics of N within the rose plant have not been reported clearly. Thus, there is a pressing need for non-destructive techniques to estimate Chl and N content in the leaf of the Damask rose. Our objective was to establish an appropriate mathematical relationship between the Chl content index (CCI) value and the total Chl/N contents for non-destructive estimation of total Chl and N in the leaf of the Damask rose. The regression models were developed with destructively measured parameters (total Chl and N) as the dependent variable and a parameter derived from CCM-200 as the independent variable (CCI). We found that polynomial regression models are suitable for non-destructive estimation of total Chl, and the model predicted values were very close to traditionally measured values with a root mean square prediction error (RMSEp) less than 0.20 mg g À1 of Chl. In the case of N estimation, a power regression model was appropriate with lowest Akaike's information criteria (AIC) and root mean square validated error (RMSEv) value. Significant correlations (P 0.001) were observed between traditionally measured values and our model predicted values in both cases.

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Evaluation of a portable chlorophyll meter to estimate chlorophyll and nitrogen contents in sugar maple (Acer saccharum Marsh.) leaves

Cited by 138 publications

References 26 publications

Growth, physiology, and nutrient retranslocation in nitrogen-15 fertilized Quercus rubra seedlings

Growth, physiology, and nutrient retranslocation in nitrogen-15 fertilized Quercus rubra seedlings

Effects of water and nitrogen supply on growth, water-use efficiency and mucilage yield of isabgol (Plantago ovata Forsk)

Non-destructive estimation of chlorophyll and nitrogen content in leaf ofRosa damascena(Mill)

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