Consequences of soil acidity and the effect of lime on the nodulation of Trifolium subterraneum L. Growing in an acid soil

Richardson, Alan; A, Henderson; James, G.S.; Simpson, Richard J.

doi:10.1016/0038-0717(88)90055-7

Cited by 32 publications

(11 citation statements)

References 21 publications

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“…However, the validity of these laboratory screenings for extrapolation to the field remains speculative. Nevertheless, in many cases, these low pH-tolerant strains indeed performed better under acid soil conditions (Keyser et a]., 1979;Zaroug and Munns, 1979;Graham et al, 1982;Lowendorf and Alexander, 1983a;Davey, 1983, 1984;Cooper et al, 1985;Howieson and Ewing, 1986;Richardson et al, 1988c;Evans et al, 1993). The use of an acidtolerant R. meliloti strain adapted to acid conditions has even extended the area of Australia sown with pasture by some 350,000 ha since 1985 (Howieson et al, 1988).…”

Section: A Soil Aciditymentioning

confidence: 97%

Factors Influencing Nodule Occupancy by Inoculant Rhizobia

Vlassak

Vanderleyden

1997

Critical Reviews in Plant Sciences

115

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Section: A Soil Aciditymentioning

confidence: 97%

Factors Influencing Nodule Occupancy by Inoculant Rhizobia

Vlassak

Vanderleyden

1997

Critical Reviews in Plant Sciences

115

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“…In the neutralized soil, lime-pelleting had, as might be expected, no effect. Roots nodulated abundantly everywhere (Table 2, Plate 1 C, 1D), similar to the nodulation of subterranean clover in limed acid soils (Coventry et al, 1985a;Richardson et al, 1988).…”

Section: Pot Experimentsmentioning

confidence: 53%

“…The roots outside the crown region were sparsely nodulated, as is shown by the very low number of distal nodules (Table 2, Plate 1B). Studies with subterranean clover at low pH, showed that nodules were formed in the less acidic regions of the soil profile (Richardson et al, 1988). Plants compensated for the lower number by increasing the mass of individual nodules (Coventry et al, 1985a;Richard- , 1988).…”

Section: Pot Experimentsmentioning

confidence: 99%

Effect of lime-pelleting on the nodulation of lucerne (Medicago sativa L.) in an acid soil: A comparative study carried out in the field, in pots and in rhizotrons

Pijnenborg

Lie

1990

Plant Soil

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The nodulation of lucerne was studied in soil (pH-HzO 5.2) with seeds either inoculated with Rhizobium meliloti (R), or inoculated and pelleted with lime (RP). For comparison, experiments were done in the field and in two types of micro-cosmos: pots and rhizotrons. In the field experiments, lime-pelleting improved the establishment of seedlings and augmented the nitrogen yield of the first harvest. These positive responses in plant growth were the consequence of a better nodulation on the upper 10 mm of the seedling tap root. The number of seedlings carrying crown nodules increased from 18% (R) to 56% (RP) at 26 days after sowing.In both, pots and rhizotrons, lime-pelleting also increased crown nodulation: in pots from 32% (R) to 60% (RP), and in rhizotrons from 5% (R) to 90% (RP). Rhizotrons, made of plastic petri dishes, allowed for continuously following of early root developments and nodule formation. Crown nodulation could already be measured after 14 days. Based on these experiments, it was concluded (i) that crown nodulation is an adequate parameter to quantify the benefit of lime-pelleting, and (ii) that rhizotrons, because of the more pronounced effects and shorter incubation time, are more suitable to study the nodulation responses in the soil caused by the addition of rhizobia and lime.

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“…These authors based their argument on the fact that only a small amount of calcium (0.6 meq per 100 g) was present in the soil. In contrast, recent work of Richardson et al (1988) indicated that the improved nodulation was primarily due to the rise in soil-pH. It is obvious from these reports, that the native calcium content in the soil might be decisive for the outcome of such nodulation experiments.…”

Section: Importance Of Neutralizationmentioning

confidence: 89%

“…The obvious remedy in practical agriculture is liming acid soils. There are several reports about the beneficial effect of liming on the nodulation of Trifolium-and Medicago species (Cordero and Blair, 1978;Coventry et al, 1985;Munns, 1965;Munns and Fox, 1977;Richardson et al, 1988;Spencer, 1950). With plants growing in nutrient solutions, an increasingly higher calcium requirement at lower pH was found for optimal nodulation of both plant species (Loneragan and Dowling, 1958;Munns, 1970).…”

Section: Introductionmentioning

confidence: 99%

Nodulation of lucerne (Medicago sativa L.) in an acid soil: pH dynamics in the rhizosphere of seedlings growing in rhizotrons

1990

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A lime-pellet around seeds of lucerne significantly increased crown nodulation in an acid soil. To investigate whether neutralization or calcium were of importance when lime was supplied, experiments with plants were done either in pots or in rhizotrons. Crown nodulation was used to quantify the effect of these two parameters.For the neutralization of the soil, KOH (in pots) or K2CO 3 (in rhizotrons) was added. The crown nodulation of pot-grown plants increased from 31% to 53%. In rhizotrons, the number of crownnodulated seedlings increased from 9% to 53%. If calcium was supplied additionally (as CaCI 2 or CaSO4), 63% crown nodulation was found in pots, and 68% in rhizotrons. These numbers are close to the crown nodulation with lime (CaCO3) alone: 70% in pots and 71% in rhizotrons. In the soil studied, the beneficial effect of lime is largely due to neutralization (80%), and only a minor part (20%) is due to the input of calcium.Using rhizotrons, the dynamics of the pH in the rhizosphere of lime-treated and untreated seedlings was followed during a period of 12 days. It was found that, even in the absence of lime, the pH along the taproot increased from 5.1 to 5.7. However, this did not result in the formation of root nodules. Nodulation was obtained only by adding neutralizing chemicals, which increased the pH during the initial 3 days, the acid sensitive period of the process.

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Consequences of soil acidity and the effect of lime on the nodulation of Trifolium subterraneum L. Growing in an acid soil

Cited by 32 publications

References 21 publications

Factors Influencing Nodule Occupancy by Inoculant Rhizobia

Factors Influencing Nodule Occupancy by Inoculant Rhizobia

Effect of lime-pelleting on the nodulation of lucerne (Medicago sativa L.) in an acid soil: A comparative study carried out in the field, in pots and in rhizotrons

Nodulation of lucerne (Medicago sativa L.) in an acid soil: pH dynamics in the rhizosphere of seedlings growing in rhizotrons

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