Phosphorus uptake by pigeon pea and its role in cropping systems of the Indian subcontinent

Pigeon pea was shown to be more efficient at utilizing iron-bound phosphorus (Fe-P) than several other crop species. This ability is attributed to root exudates, in particular piscidic add and its p-O-methyl derivative, which release phosphorus from Fe-P by chelating Fe3+. Pigeon pea is normally int...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1990-04, Vol.248 (4954), p.477-480
Main Authors: Ae, N. (Chugoku National Agricultural Experiment Station, Hiroshima-Ken, Japan), Arihara, J, Okada, K, Yoshihara, T, Johansen, C
Format: Article
Language:English
Subjects:
Acid soils
Agricultural soils
Agriculture
Agronomy. Soil science and plant productions
Alfisols
Biological and medical sciences
CAJANUS CAJAN
Cropping systems
Crops
CULTIVO INTERCALADO
CULTURE INTERCALAIRE
Environmental aspects
Fertilizers
Flowers & plants
FOSFORO
Fundamental and applied biological sciences. Psychology
Illite
INDE
INDIA
Peas
PHOSPHORE
Phosphorus
Phosphorus (Chemical element)
Physiological aspects
Pigeon pea
Pigeons
RACINE
RAICES
SORGHUM
Vertisols
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Summary:Pigeon pea was shown to be more efficient at utilizing iron-bound phosphorus (Fe-P) than several other crop species. This ability is attributed to root exudates, in particular piscidic add and its p-O-methyl derivative, which release phosphorus from Fe-P by chelating Fe3+. Pigeon pea is normally intercropped with cereals under low-input conditions in the Indian subcontinent. Although pigeon pea can utilize the relatively insoluble Fe-P, intercropped cereals must rely on the more soluble calcium-bound phosphorus. This finding suggests that cultivation of pigeon pea increases total phosphorus availability in cropping systems with low available phosphorus
ISSN:0036-8075
1095-9203
DOI:10.1126/science.248.4954.477