Relationship between panicle blast severity and mineral nutrient content of plant tissue in upland rice

Panicle blast (Pyricularia grisea) in upland rice causes significant yield losses depending upon the environmental conditions and nutritional status of the plant at the grain-filling stage. Four field experiments were conducted to evaluate the influence of mineral nutrients on panicle blast of four...

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Bibliographic Details
Published in:Journal of plant nutrition 1998-01, Vol.21 (8), p.1577-1587
Main Authors: Filippi, M.C. (National Rice and Bean Research Center, Goiania, GO, Brazil.), Prabhu, A.S
Format: Article
Language:English
Subjects:
AZOTE
Biological and medical sciences
CALCIO
CALCIUM
CINC
CONTENIDO DE NITROGENO
CULTIVARS
ENFERMEDADES FUNGOSAS
ESTADO NUTRICIONAL
ETAT NUTRITIONNEL
EXPERIMENTACION EN CAMPO
EXPERIMENTATION AU CHAMP
FIELD EXPERIMENTATION
FOSFORO
Fundamental and applied biological sciences. Psychology
FUNGAL DISEASES
Fungal plant pathogens
GENOTIPOS
GENOTYPE
GENOTYPES
GOIAS
HINCHAMIENTO DE LA SEMILLA
INFLORESCENCE
INFLORESCENCES
INFLORESCENCIAS
MAGNAPORTHE
MAGNAPORTHE GRISEA
MAGNESIO
MAGNESIUM
MALADIE FONGIQUE
NITROGEN
NITROGEN CONTENT
NITROGENO
NUTRITIONAL STATUS
NUTRITIVE VALUE
OLIGOELEMENT
OLIGOELEMENTOS
ORYZA SATIVA
PATHOGENICITY
Pathology, epidemiology, host-fungus relationships. Damages, economic importance
PATOGENICIDAD
PHOSPHORE
PHOSPHORUS
Phytopathology. Animal pests. Plant and forest protection
POTASIO
POTASSIUM
POUVOIR PATHOGENE
REMPLISSAGE DU GRAIN
SEED FILLING
TENEUR EN AZOTE
TRACE ELEMENTS
VALEUR NUTRITIVE
VALOR NUTRITIVO
VARIEDADES
VARIETE
VARIETIES
VIRULENCE
ZINC
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Description
Summary:Panicle blast (Pyricularia grisea) in upland rice causes significant yield losses depending upon the environmental conditions and nutritional status of the plant at the grain-filling stage. Four field experiments were conducted to evaluate the influence of mineral nutrients on panicle blast of four upland rice genotypes on an oxisol. Panicle blast severities of four genotypes were related to nutrient concentrations in panicle tissues. Nitrogen (N), phosphorus (P), and magnesium (Mg) contents in tissue were significantly (P0.01) and positively correlated, whereas potassium (K) and calcium (Ca) were negatively correlated with panicle blast severity. While the relationship between tissue N concentration and disease severity was quadratic, it was linear for K concentration. The correlation between tissue contents of N and P were positive and highly significant (r
ISSN:0190-4167
1532-4087
DOI:10.1080/01904169809365505