The growth of Lupinus species on alkaline soils

Caixian Tang, Alan Robson, Nancy Longnecker, B.J. Buirchell

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Lupinus angustifolius L. grows poorly on alkaline soils, particularly those that are fine-textured. This poor growth has been attributed to high concentrations of bicarbonate, high clay content and/or iron deficiency. In field studies, we examined the growth of 13 lupin genotypes reliant on N-2 fixation, or receiving NH4NO3, at four sites with various combinations of soil pH and texture.Plants grown on an alkaline clay and an alkaline sand showed iron chlorosis at early stages, and had a slower shoot growth than those grown on an acid loam or an acid sand. Species varied greatly in the severity of iron chlorosis and also in growth and seed yield, with L. angustifolius, L. luteus and L. albus more affected than L. pilosus, L. atlanticus and L. cosentinii. Rankings of growth and seed yield of the lupin genotypes on the alkaline clay correlated well with the rankings on the alkaline sand soil. Plants which had severe iron chlorosis in alkaline clay also had severe chlorosis in alkaline sands. However, correlation between the severity of iron chlorosis and early shoot growth was poor. The results suggest that high pH and/or high bicarbonate are more likely than soil texture to be the primary factors restricting the growth of commercial lupins.
Original languageEnglish
Pages (from-to)255-268
JournalCrop and Pasture Science
Volume46
DOIs
Publication statusPublished - 1994

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Lupinus
alkaline soils
chlorosis
iron
clay
sand
Lupinus angustifolius
soil texture
bicarbonates
seed yield
shoots
genotype
acids
growth factors
soil pH
soil

Cite this

Tang, Caixian ; Robson, Alan ; Longnecker, Nancy ; Buirchell, B.J. / The growth of Lupinus species on alkaline soils. In: Crop and Pasture Science. 1994 ; Vol. 46. pp. 255-268.
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The growth of Lupinus species on alkaline soils. / Tang, Caixian; Robson, Alan; Longnecker, Nancy; Buirchell, B.J.

In: Crop and Pasture Science, Vol. 46, 1994, p. 255-268.

Research output: Contribution to journalArticle

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T1 - The growth of Lupinus species on alkaline soils

AU - Tang, Caixian

AU - Robson, Alan

AU - Longnecker, Nancy

AU - Buirchell, B.J.

PY - 1994

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AB - Lupinus angustifolius L. grows poorly on alkaline soils, particularly those that are fine-textured. This poor growth has been attributed to high concentrations of bicarbonate, high clay content and/or iron deficiency. In field studies, we examined the growth of 13 lupin genotypes reliant on N-2 fixation, or receiving NH4NO3, at four sites with various combinations of soil pH and texture.Plants grown on an alkaline clay and an alkaline sand showed iron chlorosis at early stages, and had a slower shoot growth than those grown on an acid loam or an acid sand. Species varied greatly in the severity of iron chlorosis and also in growth and seed yield, with L. angustifolius, L. luteus and L. albus more affected than L. pilosus, L. atlanticus and L. cosentinii. Rankings of growth and seed yield of the lupin genotypes on the alkaline clay correlated well with the rankings on the alkaline sand soil. Plants which had severe iron chlorosis in alkaline clay also had severe chlorosis in alkaline sands. However, correlation between the severity of iron chlorosis and early shoot growth was poor. The results suggest that high pH and/or high bicarbonate are more likely than soil texture to be the primary factors restricting the growth of commercial lupins.

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