Mycorrhizal Fungi Stimulate Uptake of Soluble and Insoluble Phosphate Fertilizer From a Phosphate‐deficient Soil

Powell, Conway Ll.; Daniel, Jeannette

doi:10.1111/j.1469-8137.1978.tb01568.x

Cited by 81 publications

(39 citation statements)

References 19 publications

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“…Powell & Daniel (1978) found that after four crops, rye· grass and clover plants infected with a double inoculum of G. margarita and G. fasciculatus had retrieved only 17 % of fertiliser phosphate from a soil, while plants inoculated with G. tenuis grew much better but still recovered only 27% of the Harvest number fertiliser phosphate. Data of Abbott & Robson (1977), Mosse (1977), and Powell (l977c) also show that more efficient mycorrhizal fungi merely recover a higher percentage of any phosphate fertiliser applied to soil.…”

Section: Resultsmentioning

confidence: 99%

Growth of white clover in undisturbed soils after inoculation with efficient mycorrhizal fungi

Powell¹,

Daniel²

1978

New Zealand Journal of Agricultural Research

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Clover seedlings were inoculated with the indigenous or one of three introduced mycorrhizal fungi and transplanted into undisturbed cores of eight hill country soils. After several harvests, at least one of the introduced fungi had increased shoot growth in each soil from between 16 to 117%. In most soils, the growth benefit from inoculating with an introduced mycorrhizal fungus tended to decrease after the initial shoot harvest, and was then maintained at a lower level over subsequent harvests. In a Taihape silt loam, however. the growth benefit from Glomus tenuis inoculation increased steadily over six harvests. In four out of five soils. previous application of phosphate fertiliser (50 kg P fha/year) did not reduce mycorrhizal growth responses.

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Section: Resultsmentioning

confidence: 99%

Growth of white clover in undisturbed soils after inoculation with efficient mycorrhizal fungi

Powell¹,

Daniel²

1978

New Zealand Journal of Agricultural Research

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“…Pots were arranged in randomised blocks in an open screenhouse during spring and summer and watered from below with tap water. Recovery of fertiliser P from soil by plants was calculated as before (Powell & Daniel 1978b;Powell 1979Powell , 1980 as: P recovery % = Pr-Po X 100, where:…”

Section: Experiments D (Ryegrass With Pelleted Chatham Rise Rock Phospmentioning

confidence: 99%

“…White clover is also invariably infected by the indigenous mycorrhizal fungi present in al1 New Zealand soils (Powell 1976). Large responses to mycorrhizal inoculation of clover have been reported in sterilised and unsterilised soils (Powel1 19n;Crush 1978;Hall 1978;Powell & Daniel 1978a) with and without P fertiliser (Hall 1978;Powell & Daniel 1978b).…”

Section: Introductionmentioning

confidence: 99%

II. Responses to rock phosphates

Powell

Metcalfe

Buwalda

et al. 1980

New Zealand Journal of Agricultural Research

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Mycorrhizal and non-mycorrhizal clover plants were grown in a sterilised phosphorus-deficient soil, and fertilised with either pelleted Christmas Island 'C' grade phosphate rock or with powdered or pelleted Chatham Rise phosphate rock at eight rates ranging from 0 to 2.8 g fertiliser per pot. In a second experiment, ryegrass plants were fertilised with pelleted Chatham Rise rock phosphate. Mycorrhizal inoculation greatly increased shoot growth and phosphorus uptake compared to that of non-mycorrhizal plants at fertiliser rates up to 1.4 g per pot. The recovery of phosphorus fertiliser from soil was generally low with maximum values of 11.3% and 17.2% in soil fertilised with pelleted Christmas Island and Chatham Rise rock phosphates and a maximum of 48.0% in soil fertilised with powdered Chatham Rise rock phosphate.

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“…Application of phosphate fertilizer to soil, on the contrary, decreases the percentage of infection of roots with AMF (Hayman et al, 1975) and inhibit the ameliorating effect on plant growth (Thomson et al, 1986). The ability of arbuscular mycorrhizas to increase the uptake of P from phosphorus sources of different solubilities has generally been assessed at one or two rates of the particular applied P and comparisons have been based on top yield and P uptake at a particular rate of application (Powell and Daniels, 1978). In most of these studies, the rate of application of the insoluble P sources was inadequate for maximum plant growth (Powell and Daniels, 1978).…”

Section: Introductionmentioning

confidence: 99%

Growth and mineral nutrition responses of mycorrhizal and non-mycorrhizal cowpea, pigeon pea and groundnut to phosphorus sources of different solubilities

Ahiabor¹,

Hirata²

2008

Jnl Sci Tech

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The effects of a superphosphate (SP) and a rock phosphate (RP), with equal total P contents, on the growth and mineral nutrition responses of mycorrhizal and nonmycorrhizal cowpea, pigeon pea and groundnut were investigated in a pot experiment using an air-dry gamma ray-sterilized (1.5Mrad) Andisol subsoil. Adequate amounts of micronutrients were added to the pot soils as supplements. The plants were inoculated with surface-sterilized 100 spores/pot of Glomus etunicatum or none and with Rhizobium strains. At their maturities, dry weights of plant parts and nodule number, root length, arbuscular mycorrhizal fungal (AMF) colonization of roots and AMF spore production were also measured. Shoot nitrogen and phosphorus concentrations were determined by the Micro-Kjeldahl distillation and ammonium-molybdenum blue methods, respectively. Shoot copper and iron concentrations were measured by the atomic absorption spectrophotometry. Mycorrhiza formation was greater with superphosphate than with rock phosphate treatments. Rock phosphate enhanced mycorrhization in cowpea and pigeon pea but it decreased it in groundnut. Superphosphate-treated cowpea and pigeon pea plants were larger than RP-treated plants whether mycorrhizal or not but in groundnut growth increased only when the plant was treated with SP and inoculated with AMF. Mycorrhizal enhancement of shoot growth in superphosphate-fertilized groundnut could be a direct consequence of improved P nutrition resulting from increased hyphal uptake and/ or enlarged absorptive root surface due to increased root fineness. There were similarities in shoot dry matter yields as well as shoot P uptakes of both mycorrhizal and non-mycorrhizal RP-treated plants suggesting that the legumes were so unresponsive to the RP that even mycorrhization could not trigger any response in them. The increased contents of N, Cu and Fe in the shoots of mycorrhizal SP-fertilized plants were observed to be the result of larger shoot sizes except with Fe in groundnut shoot whose enhancement could be related to a good mycorrhiza formation and a concomitant improvement in P nutrition which may further have been influenced by its fine root structure. There was a very close interdependency of fine root structure, AMF colonization, AMFspore production and improved P and Fe nutrition in groundnut as a result of soluble phosphate application.

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Mycorrhizal Fungi Stimulate Uptake of Soluble and Insoluble Phosphate Fertilizer From a Phosphate‐deficient Soil

Cited by 81 publications

References 19 publications

Growth of white clover in undisturbed soils after inoculation with efficient mycorrhizal fungi

Growth of white clover in undisturbed soils after inoculation with efficient mycorrhizal fungi

II. Responses to rock phosphates

Growth and mineral nutrition responses of mycorrhizal and non-mycorrhizal cowpea, pigeon pea and groundnut to phosphorus sources of different solubilities

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