Effect of Some Soil Physical Properties on Growth and Manganese, Iron, Aluminum and Molybdenum Content of Oats

Cheng, B. T.; Bourget, Steve; Ouellette, G. J.

doi:10.4141/cjss71-015

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…MacMillan and Hamilton (1971) found that increasing soil temperature decreased the yield but increased the leaf Mn concentration of carrots (Daucus carota L.) grown in the greenhouse. Cheng et al (1971) found the same effects with oats (Avena sativa L.) when comparing root zone temperatures of 21 and 38 C, but these temperatures are likely well above the optimum for growth. Apparently, the growth rate was decreased much more than the Mn uptake rate due to the higher temperature.…”

mentioning

confidence: 71%

Effect of Temperature on Soybean Growth and Manganese Accumulation¹

Ghazali¹,

Cox

1981

Agronomy Journal

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Manganese deficiency in soybeans (Glycine max (L.) Merr.) appears to be more severe in spring than in summer. This may result from a decrease in the Mn supply relative to growth or an increase in the functional requirement of Mn under cooler conditions. To examine the supply‐functional concentration relationship, experiments were conducted in growth chambers at various temperatures. Manganese deficient soybeans were exposed to various concentrations of Mn in nutrient solution and sampled periodically during vegetative growth. Both Mn accumulation and the growth parameters such as dry weight of plant parts, leaf area, and plant height increased exponentially with time. Since the growth parameters responded similarly, the results were expressed as the dry weight of the tops. The relative growth rate (RGR) and relative accumulation rate of Mn (RAR) were calculated. The RGR increased with both increasing temperature and Mn supply whereas the RAR increased primarily with increasing Mn supply. The RGR maximized between 10 and 20 ppb Mn in solution, indicating an adequate plant Mn concentration. At adequate Mn, the RGR increased from 0.08 to 0.12 g g−1 day−1 with increasing temperature and plant Mn increased with the Mn concentration in the nutrient solution. At inadequate Mn, the RGR increased with the Mn concentration in the nutrient solution and plant Mn equilibrated at a minimal concentration the functional requirement that decreased linearly from 7 to 4 µg/g with increasing temperature. Relative growth rate was then expressed as a function of plant Mn concentration and temperature. At higher temperatures, the functional requirement, of Mn was low but on increasing the top Mn concentration, the RGR plateaued at a high rate. On the other hand, at lower temperatures the functional requirement was greater and the RGR with adequate Mn was lower. At the functional requirement, the RGR was governed by the rate of Mn accumulation.

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mentioning

confidence: 71%

Effect of Temperature on Soybean Growth and Manganese Accumulation¹

Ghazali¹,

Cox

1981

Agronomy Journal

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“…1973, SIMS andPATRICK 1978). From point of view of the plants the divalent manganese is important, because plants take up manganese mainly as manganous manganese (CHENG and OUELLETTE 1971). According to these points, when the aim is to extract plant-available manganese in the soil the extraction could be carried out with cation exchange resins.…”

Section: Determination Of Exchangeable Manganesementioning

confidence: 99%

Determination of plant-available manganese in Finnish soils

Mäntylahti

1981

AFSci

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The aim of the study was to determine the plant-available manganese in the soil and to study which factors regulate the plant-available manganese. The material consisted of 193 mineral soils and 17 organogenic soils. Oats (Avena saliva L.), Italian ryegrass (Lolium multiflorum Lam.) and turnip rape (Brassica campestris oleifera L.) were used as the test plants in the pot experiments. A cation exchange resin method was developed for extracting soil manganese. The method enabled both exchangeable and reducible manganese to be determined. Exchangeable manganese comprised the manganese which was freely present in the soil solution in cationic form, and the manganese in cationic form which could be exchanged from the soil. Reducible manganese was the manganese reducible to the oxidation state, Mn2+, by the action of hydroquinone, hydroxylammonium chloride or ascorbic acid. The content of exchangeable manganese in the soil explained 33,7 % of the variation in the manganese content of the first yield of ryegrass. The greater the number of yields harvested, the smaller was the significance of the content of exchangeable manganese in the soil as an independent variable. On the other hand, when the content of reducible manganese in the soil was used as the independent variable, then the greater the number of yields harvested, the better it explained the variation in the manganese content of the yield. The content of manganese reduced by hydroxylammonium chloride explained 68,6 % of the variation in the manganese content of the fourth yield. The contents of exchangeable manganese and manganese reducible by ascorbic acid explained 73,4 % of the variation in the manganese content of the roots. The pH, the organic carbon content and the content of hydroquinone-reducible manganese in the soil explained 67,0 % of the variation in the content of exchangeable manganese in the plough layer of the mineral soils. The content of "total" manganese in the plough layer of the mineral soils explained 27,6 % of the variation in the content of ascorbic acid-reducible manganese. The plant stands increased the content of exchangeable manganese in the soil and decreased the redox potential of the soil in comparison to the incubated soils. The content of exchangeable manganese started to increase when the redox potential of the soil fell below 0,59 V. Adding glucose promoted the reduction of manganese in the soil, reduction appearing to be both biological and non-biological in origin. Soil moisture increased the content of exchangeable manganese when the moisture was higher than the field capacity. Liming decreased the content of exchangeable manganese in the soil more than would have been expected on the basis of the change in pH values. The manganese content and manganese uptake of the crop were also reduced. Adding large amounts of manganese (Mn 51,5 kg/ha*20 cm) did not prevent liming (calcite 14 t/ha*20cm) from reducing the manganese content of the yield.

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“…or AlPO4 suspensions or the addition of a solution of alum, usually potassium alum, to the antigen to form a precipitate in situ. The World Health Organization Technical Report No. 61 (712) indicates that "the expression 'alum-precipitated toxoid' describes a laboratory procedure and in no way defines the nature of the material obtained either quantitatively or qualitatively.…”

Section: Aluminum Adjuvants For Vaccines Andmentioning

confidence: 99%

Aluminum in the Environment and Human Health

Sorenson¹,

Campbell²,

Tepper³

et al. 1974

Environ Health Perspect

213

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The review of over 800 references on aluminum (Al) published since the mid-fifties covers the occurrence of Al in soil, air, water, plants and food products, as well as air and water pollution problems. In addition, the existing quality criteria, the biology and toxicology of Al, and the therapeutic and medical uses are presented. It is concluded that absorption and retention or accumulation of Al in humans occurs at lower levels of intake than had been assumed formerly. However, levels of 5 to 50 times the normal daily intake do not appear to interfere with other metabolic processes. The adverse effects of Al reported in the more recent years resulted from the inhalation or ingestion of Al in concentrations many times greater than the amounts present under normal circumstances. As in the past, there is still no need for concern by the public or producers of Al or its products concerning hazards to human health derived from well established and extensively used products.

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Effect of Some Soil Physical Properties on Growth and Manganese, Iron, Aluminum and Molybdenum Content of Oats

Abstract: not available

Cited by 4 publications

References 5 publications

Effect of Temperature on Soybean Growth and Manganese Accumulation¹

Effect of Temperature on Soybean Growth and Manganese Accumulation¹

Determination of plant-available manganese in Finnish soils

Aluminum in the Environment and Human Health

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Effect of Some Soil Physical Properties on Growth and Manganese, Iron, Aluminum and Molybdenum Content of Oats

Abstract: not available

Cited by 4 publications

References 5 publications

Effect of Temperature on Soybean Growth and Manganese Accumulation1

Effect of Temperature on Soybean Growth and Manganese Accumulation1

Determination of plant-available manganese in Finnish soils

Aluminum in the Environment and Human Health

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Effect of Temperature on Soybean Growth and Manganese Accumulation¹

Effect of Temperature on Soybean Growth and Manganese Accumulation¹