Aluminum toxicity and high bulk density: Role in limiting shoot and root growth of selected aluminum indicator plants and eastern gamagrass in an acid soil

Foy, C. D.; Sadeghi, Ali; Ritchie, Jerry C.; Krizek, Donald T.; Davis, John R.; Kemper, W. D.

doi:10.1080/01904169909365736

Cited by 19 publications

(10 citation statements)

References 30 publications

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“…Thus, the extractable concentrations of Al in the soil could not be adequately predicted. It is generally reported that decreasing soil pH increases the available, and therefore extractable, concentration of Al (Foy et al, 1999;Tyler & Olsson, 2001). An increase in the extractable concentration of Al would therefore be expected as a result of S 0 treatment and, to a lesser extent, in the Fe (II) SO 4 Figure 5 The relationship between extractable Cd concentration (mg kg −1 ) in soil and the Cd concentration (mg kg −1 ) in the shoots of Agrostis capillaries (r 2 = 0.01, n = 30).…”

Section: Discussionmentioning

confidence: 97%

“…However, a decrease in soil pH releases many metallic cations into more biologically available forms (Rieuwerts, Thornton, Farago, & Ashmore 1998;Sauve, Norvel, & McBride, 2000;Tyler & Olsson, 2001). For example, a 0.5 unit decrease in pH was shown to halve the adsorption of Cd by a sandy soil (Boekhold, Temminghoff, & van der Zee, 1993) and Al availability has been shown to increase markedly below pH 5.5 (Foy et al, 1999).…”

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confidence: 97%

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Heathland Restoration on Former Agricultural Land: Effects of Artificial Acidification on the Availability and Uptake of Toxic Metal Cations

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Water Air Soil Pollut

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Section: Discussionmentioning

confidence: 97%

mentioning

confidence: 97%

Heathland Restoration on Former Agricultural Land: Effects of Artificial Acidification on the Availability and Uptake of Toxic Metal Cations

Green

Stockdale

Tibbett

et al. 2006

Water Air Soil Pollut

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“…In soils with pH below 5.5, P uptake is reduced due to poor root growth associated with Al toxicity (Foy et al, 1999). Ron and Loewy (2000) found that furrow applied P resulted in superior wheat grain yield as compared to broadcast P application method.…”

Section: Fertilizer Application Methods (Broadcasting Vs Furrow)mentioning

confidence: 99%

Hard Red Winter Wheat Cultivar Responses to a pH and Aluminum Concentration Gradient

et al. 2007

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Aluminum (Al) toxicity is a major yield‐limiting factor in winter wheat production in many parts of the world. The use of Al‐tolerant cultivars reduces the impact of this problem and is common to the southern Great Plains where wheat is managed as a dual‐purpose crop. However, no quantitative data exist on the Al tolerance ranking of winter wheat cultivars often grown in a dual‐purpose management system. This study was established to classify on a field scale the Al tolerance of common winter wheat cultivars (Ok101, Ok102, 2137, 2174, Jagger, Jagalene, Custer, and AP502CL). Fall forage yield of each cultivar was harvested by hand clipping. Soil samples were collected at the same time and analyzed for pH and Al saturation (Alsat). Grain was hand‐harvested in June of each year from the same rows harvested for forage. Cultivar differences (P < 0.1) were found in forage and grain yields for the Alsat > 30% range. Al tolerance based on grain yield ranked as follows: 2137 > Jagalene = Ok101 > Jagger = 2174 ≥ Ok102 > Custer = AP502CL. Al tolerance based on forage yield ranking was similar to that of grain: 2137 > Ok101 = Jagalene = Jagger > 2174 = Ok102 > Custer = AP502CL. Grain yield seemed to be less affected by Alsat than forage yields. The use of Al‐tolerant winter wheat cultivars may minimize producers' risk of crop loss; therefore, this ranking of Al tolerance should help winter wheat producers make informed decisions if they have acid soils with high Al content and no other remedies available.

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“…There is only little information available on the interaction between mechanical impedance and Al toxicity on root growth. Foy et al (1999) related the failure of Alresistant crop genotypes to restricted root development in Al-toxic acid subsoil to its high bulk density. Horst et al (1990) addressed this aspect and suggested, based on the comparison between hydroponically and sandculture grown plants, that mechanical impedance alleviates Al toxicity by enhancing the release of high molecular weight root exudates (mucilage) protecting the root apex from Al injury (Horst et al 1982).…”

Section: Root-growth Response Of Plants To Aluminium Toxicity and Dromentioning

confidence: 99%

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

2013

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Background Aluminium (Al) toxicity and drought stress are two major constraints for crop production in the world, particularly in the tropics. The variation in rainfall distribution and longer dry spells in much of the tropics during the main growing period of crops are becoming increasingly important yield-limiting factors with the global climate change. As a result, crop genotypes that are tolerant of both drought and Al toxicity need to be developed. Scope The present review mainly focuses on the interaction of Al and drought on root development, crop growth and yield on acid soils. It summarizes evidence from our own studies and other published/related work, and provides novel insights into the breeding for the adaptation to these combined abiotic stresses. The primary symptom of Al phytotoxicity is the inhibition of root growth. The impeded root system will restrict the roots for exploring the acid subsoil to absorb water and nutrients which is particularly important under condition of low soil moisture in the surface soil under drought. Whereas drought primarily affects shoot growth, effects of phytotoxic Al on shoot growth are mostly secondary effects that are induced by Al affecting root growth and function, while under drought stress root growth may even be promoted. Much progress has recently been made in the understanding of the physiology and molecular biology of the interaction between Al toxicity and drought stress in common bean (Phaseolus vulgaris L.) in hydroponics and in an Al-toxic soil. Conclusions Crops growing on acid soils yield less than their potential because of the poorly developed root system that limits nutrient and water uptake. Breeding for drought resistance must be combined with Al resistance, to assure that drought resistance is expressed adequately in crops grown on soils with acid Al-toxic subsoils.

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Aluminum toxicity and high bulk density: Role in limiting shoot and root growth of selected aluminum indicator plants and eastern gamagrass in an acid soil

Cited by 19 publications

References 30 publications

Heathland Restoration on Former Agricultural Land: Effects of Artificial Acidification on the Availability and Uptake of Toxic Metal Cations

Heathland Restoration on Former Agricultural Land: Effects of Artificial Acidification on the Availability and Uptake of Toxic Metal Cations

Hard Red Winter Wheat Cultivar Responses to a pH and Aluminum Concentration Gradient

Interaction of aluminium and drought stress on root growth and crop yield on acid soils

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