Foliar SPAD-502 meter values, nitrogen levels, and extractable chlorophyll for red maple selections

• Published in: HortScience Vol. 31; no. 3; pp. 468 - 470
• Main Authors: Sibley, J.L. (Auburn University, AL.), Eakes, D.J, Gilliam, C.H, Keever, G.J, Dozier, W.A. Jr, Himelrick, D.G
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Alexandria, VA American Society for Horticultural Science 01.06.1996
• Subjects: ACCURACY; ACER FREEMANII; ACER RUBRUM; ACER SACCHARINUM; Agronomy. Soil science and plant productions; ANALISIS DE TEJIDOS; ANALYSE DE TISSUS; ANALYTICAL METHODS; Biological and medical sciences; CHEMICAL COMPOSITION; CHLOROPHYLLE; CHLOROPHYLLS; CLOROFILAS; COLOR; COLOUR; COMBUSTION; COMPOSICION QUIMICA; COMPOSITION CHIMIQUE; CONTENIDO DE NITROGENO; COULEUR; CULTIVAR IDENTIFICATION; CULTIVARS; ENSAYO DE SEMILLAS; ESSAI DE SEMENCES; EXTRACTION; FEUILLE; FOLIAGE; FOLIAR DIAGNOSIS; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Generalities. Analysis and diagnosis methods; HIBRIDOS; HOJAS; HYBRIDE; HYBRIDS; LEAVES; MEASUREMENT; MEDICION; MESURE; NITROGEN CONTENT; ORNAMENTAL VALUE; PLANTULAS; PLANTULE; SEED TESTING; SEEDLINGS; Soil-plant relationships. Soil fertility. Fertilization. Amendments; TECHNIQUE ANALYTIQUE; TECNICAS ANALITICAS; TENEUR EN AZOTE; TISSUE ANALYSIS; VALEUR ORNEMENTALE; VALOR ORNAMENTAL; VARIEDADES; VARIETE; VARIETIES; Alabama; United States; North America; America; Macronutrient(mineral); Chlorophyll; Foliar analysis; Measurement sensor; Plant leaf; Nitrogen; Aceraceae; Acer rubrum; Photosynthetic pigment; Dicotyledones; Content; Angiospermae; Hardwood forest tree; Spermatophyta; Field study
• ISSN: 0018-5345; 2327-9834
• DOI: 10.21273/HORTSCI.31.3.468

Twelve red maple selections in an existing field trial were evaluated for leaf chlorophyll content with a SPAD-502 chlorophyll meter, total foliar N concentration with a LECO CHN analyzer, and total foliar chlorophyll content (CHL) by N,N-dimethylformamide extraction. Selections included Acer rubrum L. 'Autumn Flame', 'Fairview Flame', 'Franksred' (Red Sunset), 'Karpick', 'Northwood', 'October Glory', 'Redskin', 'Schlesingeri', and 'Tilford', and A. xfreemanii E. Murray 'Autumn Blaze' ('Jeffersred'), 'Morgan' ('Indian Summer'), and 'Scarsen' (Scarlet Sentinel). 'Franksred' and 'Northwood' had the highest monthly SPAD-502 values in 1993 and 1994. Lowest SPAD-502 values were on 'Redskin' and 'Autumn Blaze' each year. Foliar N concentration ranged from 2.62% for 'Autumn Flame' to 2.01% for Redskin. CHL levels on a fresh-weight basis ranged from 5.38 mg.g-1 for 'Fairview Flame' to 3.94 mg.g-1 for 'October Glory'. SPAD-502 and extractable CHL values were correlated (r = 0.45; P less than or equal to 0.001); however, the correlation (r = 0.15; P less than or equal to 0.38) between SPAD-502 values and total foliar N concentration was nonsignificant