Effect of leaf phosphorus and potassium concentration on chlorophyll meter reading in rice [Oryza sativa]

Chlorophyll meter (SPAD) is a convenient tool to estimate leaf nitrogen (N) concentration of rice plants. There is no information on the effects of leaf phosphorus (P) and potassium (K) concentration on SPAD readings and on the relationship between SPAD values and leaf N concentration in the literat...

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Veröffentlicht in:	Plant production science 1999, Vol.2 (4), p.227-231
Hauptverfasser:	Peng, S. (International Rice Research Inst., Los Banos, Laguna (Philippines)), Sanico, A.L, Garcia, F.V, Laza, R.C, Visperas, R.M, Descalsota, J.P, Cassman, K.G
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions AZOTE Biological and medical sciences CHEMICAL COMPOSITION Chlorophyll Chlorophyll meter CHLOROPHYLLE CHLOROPHYLLS CLOROFILAS COMPOSICION QUIMICA COMPOSITION CHIMIQUE Dry season Fertilizers FEUILLE FOSFORO Fundamental and applied biological sciences. Psychology General agronomy. Plant production Generalities. Analysis and diagnosis methods HOJAS INSTRUMENT DE MESURE INSTRUMENTOS DE MEDICION Leaf K concentration Leaf N concentration Leaf P concentration LEAVES MEASURING INSTRUMENTS NITROGEN NITROGENO NORMALISATION NORMALIZACION ORYZA SATIVA PHOSPHORE PHOSPHORUS Plants POTASIO POTASSIUM Rice (Oryza sativa L.) Soil-plant relationships. Soil fertility. Fertilization. Amendments STANDARDIZING
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