Mg induced Ca deficiency under alkaline conditions

Kopittke, Peter M.; Menzies, Neal W.

doi:10.1007/s11104-004-0555-2

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…Therefore, in solving Mg problems in soil, it is also conceivable to research Ca and Mg interactions (by Ca/Mg ratio) and their dynamics in soil (Loide 2002). Little is known about excessive Mg-induced Ca and K deficiency in soil (Kopittke and Menzies 2005).…”

Section: Introductionmentioning

confidence: 99%

Application of Dolostone Powder as Industrial Residual on Magnesium‐Deficient Arable Soils in Estonia

Loide¹,

Kõlli²,

Reintam³

2010

Communications in Soil Science and Plant Analysis

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About 60% (678,000 ha) of Estonian arable soils have a deficiency of plantavailable magnesium (Mg). The soils formed from dolostone (or dolomite rock) till are considerably richer in Mg than those formed from limestone-rich and noncalcareous tills. Formerly, ground dolostone rock with a high content of mineral dolomite was used only as a soil liming material. Later, dolostone powder (DSP), received in the course of industrial manufacturing of dolostone rubble, was also applied for the mitigation of Mg deficiency in soil. The easily accessible resources of DSP as an industrial waste may also qualify as an Mg fertilizer. It soon became apparent, however, that with the application of DSP to the soil, an excessive quantity of Mg could be accumulated. This Mg surplus in soil destroys the equilibrium in plants' assimilation of nutrition elements and inhibits the normal development of agricultural crops. In our research, the influence of different DSP doses on the yield of red clover (Trifolium pratense L.), lucerne (Medicago sativa L.), barley (Hordeum vulgare L.), wheat (Triticum aestivum L.), and oil rape (Brassica napus L. var. Oleifera subvar. Annua) was studied on arable soils formed from different parent materials. We elucidated from the 2-year experiment the high efficiency of DSP application in increasing the yields of Mg-philic crops such as clover, lucerne, and oil rape. The negative influence of excessive Mg application on crop yields, especially in the first year of DSP application, is more clearly visible on soils that are calcium deficient for plant production. For the amendment of deficiency in Mg acid arable soils, 1-1.5 t ha 21 of DSP should be used every 2 to 3 years. The broad application of industrial-origin DSP is useful from at least three points of view: (1) industrially produced Mg fertilizers may be replaced by a readily available local industrial (mining) by-product, (2) managing costs and territories for the disposal of industrial wastes will be reduced, and (3) it will be possible to attain complex and environmentally friendly utilization of local mineral resources.

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Section: Introductionmentioning

confidence: 99%

Application of Dolostone Powder as Industrial Residual on Magnesium‐Deficient Arable Soils in Estonia

Loide¹,

Kõlli²,

Reintam³

2010

Communications in Soil Science and Plant Analysis

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“…Decreases in Ca 2+ uptake by sunflower may have been due to reactions in the substrate. Competitive ions such as Na + , K + , and Mg 2+ may reduce Ca 2+ activity in the external solution, limit plant-available Ca 2+ , and decrease Ca 2+ uptake and accumulation (Cramer et al 1985;Grattan and Grieve, 1999;Suarez and Grieve, 1988;Kopittke and Menzies, 2005).…”

Section: Ion Partitioning and Ion Interactionsmentioning

confidence: 99%

Response of Ornamental Sunflower Cultivars ‘Sunbeam’ and ‘Moonbright’ to Irrigation With Saline Wastewaters

Grieve

Poss

2010

Journal of Plant Nutrition

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2 To explore the possibility that saline wastewaters may be used to grow commercially acceptable floriculture crops, a study was initiated to determine the effects of salinity on two pollen-free cultivars of ornamental sunflower (Helianthus annuus L.). 'Moonbright' and 'Sunbeam' were grown in greenhouse sand cultures irrigated with waters prepared to simulate wastewaters commonly present in two inland valley regions of California: 1) San Joaquin Valley (SJV) where saline-sodic drainage waters are dominated by sodium (Na + ) and sulfate (SO 2− 4 ) and 2) Coachella Valley (CV) where major ions in tailwaters are Na, predominating in that order. Ten-day-old seedlings were subjected to five salinity treatments of each water composition, each replicated three times. Electrical conductivities (EC) of the irrigation waters were 2.5, 5, 10, 15, and 20 dS·m −1 . Flowering stems were harvested when about 75% of the ray flowers were nearly horizontal. Stem length and fresh weight, flower and stem diameter were measured. Mineral ion concentrations in upper and lower stems, upper and lower leaves were determined. Sodium was excluded from the young tissues in the upper portions of the shoot and retained in the basal stem tissue. Inasmuch as sunflower is also a strong potassium (K)-accumulator, K + /Na + selectivity coefficients were unusually high in the younger shoot organs. Despite a fivefold increase in substrate Ca 2+ in both solutions, shoot-Ca decreased as salinity increased and this cation was retained in the older leaves. A few of the lower leaves of plants irrigated with ICV waters at EC = 10 dS·m −1 and higher, exhibited necrotic margins which were undoubtedly caused by high concentrations of Cl − in the tissues. Flowering stems produced in all treatments met florist quality standards in terms of diameters for stems (0.5 to 1.5 cm) and blooms (8 to 15 cm). Across treatments, stem lengths ranged from 60 to 175 cm. Both ornamental sunflower cultivars proved to be good candidates for production of marketable flowering stems using moderately saline wastewaters.

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“…Moreover, the accumulation of MgCO 3 can decrease Ca availability as a consequence of the formation of CaCO 3 precipitation (Li & Yu, ). Plant growth is markedly inhibited in Mg‐contaminated soils (Li & Yu, ; Kopittke & Menzies, ). The suppression of root activity and growth is obvious when the concentration of soluble Mg exceeds 80 mg L −1 or the concentration of MgCO 3 exceeds 10 g kg −1 in soils (Guan et al ., ; Li & Yu, ).…”

Section: Introductionmentioning

confidence: 99%

Remediation of a Magnesium‐Contaminated Soil by Chemical Amendments and Leaching

et al. 2015

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The deposition of magnesium (Mg)-rich dust from magnesite mining activities has resulted in serious land degradation. However, the main factors limiting plant growth in Mg-contaminated soils are unclear. Moreover, little information is available on the remediation of Mg-contaminated soils. In this study, remediation of soils contaminated with Mg-rich dust was investigated in a pot experiment using maize as the indicator plant. There were five treatments: (i) control; (ii) leaching; (iii) application of CaCl 2 ; (iv) leaching + CaCl 2 application; and (v) application of Ca(H 2 PO 4 ) 2 · H 2 O. Soil properties and growth of maize (Zea mays L.) seedlings were measured. Leaching alone significantly decreased soluble Mg concentration. Leaching + CaCl 2 application greatly increased exchangeable Ca concentration and decreased soil pH by 0·3 units. Application of CaCl 2 alone increased soluble Mg concentration sharply, which directly inhibited the germination of maize seeds. Application of Ca(H 2 PO 4 ) 2 · H 2 O significantly increased the concentrations of exchangeable Ca and available phosphorus and decreased soil pH by 1·7 units. The biomass of maize seedlings increased in the order of control = leaching < leaching + CaCl 2 < < Ca(H 2 PO 4 ) 2 · H 2 O. These results suggested that the plant growth in Mg-contaminated soils was limited primarily by Ca deficiency and secondarily by high soil pH when exchangeable Ca was sufficient. High soil pH suppressed plant growth probably mainly by inhibiting phosphate uptake from the soil. Applying acid Ca salt with low solubility is an attractive option for the remediation of Mg-contaminated soils.

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Mg induced Ca deficiency under alkaline conditions

Cited by 9 publications

References 34 publications

Application of Dolostone Powder as Industrial Residual on Magnesium‐Deficient Arable Soils in Estonia

Application of Dolostone Powder as Industrial Residual on Magnesium‐Deficient Arable Soils in Estonia

Response of Ornamental Sunflower Cultivars ‘Sunbeam’ and ‘Moonbright’ to Irrigation With Saline Wastewaters

Remediation of a Magnesium‐Contaminated Soil by Chemical Amendments and Leaching

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