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Type: Journal article
Title: Growth, P uptake in grain legumes and changes in rhizosphere soil P pools
Author: Mat Hassan, H.
Marschner, P.
McNeill, A.
Citation: Biology and Fertility of Soils, 2012; 48(2):151-159
Publisher: Springer-Verlag
Issue Date: 2012
ISSN: 0178-2762
Statement of
Hasnuri Mat Hassan, Petra Marschner, Ann McNeill, Caixian Tang
Abstract: In soils with low P availability, several legumes have been shown to mobilise less labile P pools and a greater capacity to take up P than cereals. But there is little information about the size of various soil P pools in the rhizosphere of legumes in soil fertilised with P although P fertiliser is often added to legumes to improve N₂ fixation. The aim of this study was to compare the growth, P uptake and the changes in rhizosphere soil P pools in five grain legumes in a soil with added P. Nodulated chickpea (Cicer arietinum L.), faba bean (Vicia faba L.), white lupin (Lupinus albus L.), yellow lupin (Lupinus luteus L.) and narrow-leafed lupin (Lupinus angustifolius L.) were grown in a loamy sand soil low in available P to which 80 mg P kg⁻¹ was added and harvested at flowering and maturity. At maturity, growth and P uptake decreased in the following order: faba bean > chickpea > narrow-leafed lupin > yellow lupin > white lupin. Compared to the unplanted soil, the depletion of labile P pools (resin P and NaHCO₃-P inorganic) was greatest in the rhizosphere of faba bean (54% and 39%). Of the less labile P pools, NaOH₃-P inorganic was depleted in the rhizosphere of faba bean while NaOH-P organic and residual P were most strongly depleted in the rhizosphere of white lupin. The results suggest that even in the presence of labile P, less labile P pools may be depleted in the rhizosphere of some legumes.
Keywords: Grain legumes
P availability
P fractionation
Species variation
Rights: © Springer, Part of Springer Science+Business Media
DOI: 10.1007/s00374-011-0612-y
Grant ID: ARC
Appears in Collections:Agriculture, Food and Wine publications
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