Effect of manġanese level in nutrient solution on ġrowth and maġnesium content ofPinus radiata seedlinġs

Safford, L. O.

doi:10.1007/bf02186990

Cited by 9 publications

(4 citation statements)

References 3 publications

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“…Table 2 (B4) shows that under Mn-treatment, Ca is reduced at least by 50% in the different tissues, and Mg even more. Safford (1975) showed this strong affect of Mn to Mg with pine seedlings.…”

Section: Soil-borne Metal Effects and Their Regenerationmentioning

confidence: 82%

Element content in tissues of spruce seedlings from hydroponic cultures simulating acidification and deacidification

Stienen

Bauch

1988

Plant Soil

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In order to determine the primary causes of coniferous fine root damage and disfunction in acidic soils, hydroponic cultures of young spruce in pH neutral, acidic, and metal ion-amended media were established. After five months, physiological stress in the roots was removed by raising the pH in the acid and metal ion-amended cultures to physiological neutrality. The cellular element analytical techniques of x-ray microprobe (EDXA) and laser-micromass-spectroscopy (LAMMA) were applied to samples of various tissues of the cultured spruce. Nutrient uptake by the fine roots was blocked by the following ions in order of decreasing severity: A13+ > H + > Fe 3+ > Mn 2+ . Magnesium uptake by the fine root apoplast was greatly inhibited by these blockers as was calcium. A13+ and Fe 3+ act predominantly in the root cortex, while Mn 2+ is mobile throughout the whole plant. Besides the roots, nutrient deficiencies are also severe in the shoot bark and needles. Phloem processes might therefore be affected. The ion exchange functions of the fine roots are almost reversed by raising the pH of the solutions; the nutrient cations may then again be taken up by the apoplast and the crown status improved. The consequences of these findings are discussed with regard to soil processes and fertilization (liming) treatments under field conditions.

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Section: Soil-borne Metal Effects and Their Regenerationmentioning

confidence: 82%

Element content in tissues of spruce seedlings from hydroponic cultures simulating acidification and deacidification

Stienen

Bauch

1988

Plant Soil

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“…Similar interactions between Mn and Mg have been reported by other workers. Safford (1975) observed a negative influence of Mn on Mg content in Pinus radiata D. Don seedlings, and suggested that Mn inhibited the movement of Mg from roots to leaves. Heenan and Campbell (1981) concluded that Mn supply reduced Mg uptake in soybean (Glycine Max L.…”

Section: Resultsmentioning

confidence: 98%

Manganese Deficiency and Toxicity in Wheat: Influence on Growth and Forage Quality of Herbage¹

Fales¹,

Ohki²

1982

Agronomy Journal

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There is little information concerning critical Mn deficiency and toxicity levels in forage plants, or how plant Mn concentration affects other plant constituents associated with forage quality. This study was undertaken to investigate possible interactions between plant Mn concentration and the growth and forage quality of wheat (Triticum aestivum L. cv. Stacy). Wheat plants were grown in nutrient solution containing 0.005, 0.02, 0.05, 0.25, 1, 5, 25, 100, 200, and 500 µg/g Mn. Plants were grown for 30 days after transplanting into nutrient solution and were harvested at the three‐leaf stage, lyophilized, and weighed. Manganese concentration, in vitro dry matter disappearance (IVDMD), neutral detergent fiber (NDF), in vitro cell wall disappearance (IVCWD), total nonstructural carbohydrates (TNC), and Ca and Mg concentrations were determined on wheat shoot. Critical Mn deficiency and toxicity levels affecting normal growth of wheat shoot were determined to be 35 and 475 µg/g dry wt, respectively. These values are useful in determining deficiency and toxicity in wheat production. Percentage NDF, IVDMD, TNC, and IVCWD were reduced in tissue from plants that were critically Mn‐deficient. In vitro dry matter disappearance and TNC were increased in tissue from critically Mn‐toxic plants. In vitro dry matter disappearance ranged from 71 to 89%, with the lowest values observed for Mn‐deficient and the highest for Mn‐toxic plants. The high IVDMD of the Mn‐toxic plants appeared to be related to an accumulation of TNC, while the relatively lower IVDMD of the Mn‐deficient plants was related to reduced cell wall digestibility. Both Ca and Mg concentrations decreased as Mn concentration in the plants increased above 475 µg/g. Results of this study indicate that Mn deficiency and toxicity in wheat have a significant effect on amount of growth and the concentration of plant constituents associated with forage quality. These constituents remain relatively constant over the adequate range of Mn nutrition and plant Mn concentration should be kept within the 35 and 475 µg/g range.

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“…In higher plants the magnesium uptake decreased by the increase of the manganese supply (Safford 1975;Turner and Barkus 1983) due to competition for the same binding site (Heenan and Campbell 1981). Similarly Nazrul-Islam (1986) had observed that magnesium accumulation was reduced in both shoots and roots by the increase in manganese concentration in the nutrient solution.…”

mentioning

confidence: 93%

Influence of changes in manganese and magnesium supply on some aspects of wheat physiology

Chatterjee

Nautiyal

Agarwala

1994

Soil Science and Plant Nutrition

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Effect of manġanese level in nutrient solution on ġrowth and maġnesium content ofPinus radiata seedlinġs

Cited by 9 publications

References 3 publications

Element content in tissues of spruce seedlings from hydroponic cultures simulating acidification and deacidification

Element content in tissues of spruce seedlings from hydroponic cultures simulating acidification and deacidification

Manganese Deficiency and Toxicity in Wheat: Influence on Growth and Forage Quality of Herbage¹

Influence of changes in manganese and magnesium supply on some aspects of wheat physiology

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Effect of manġanese level in nutrient solution on ġrowth and maġnesium content ofPinus radiata seedlinġs

Cited by 9 publications

References 3 publications

Element content in tissues of spruce seedlings from hydroponic cultures simulating acidification and deacidification

Element content in tissues of spruce seedlings from hydroponic cultures simulating acidification and deacidification

Manganese Deficiency and Toxicity in Wheat: Influence on Growth and Forage Quality of Herbage1

Influence of changes in manganese and magnesium supply on some aspects of wheat physiology

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Product

Resources

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Manganese Deficiency and Toxicity in Wheat: Influence on Growth and Forage Quality of Herbage¹