Estimating Plant-Available Manganese in Selected Kentucky Soils1

Duangpatra, Piya; Sims, J. L.; Ellis, J.

doi:10.1097/00010694-197901000-00005

Cited by 10 publications

(11 citation statements)

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“…Its suitability for manganese was confirmed by the high correlations with plant uptake found by Hoyt and Nyborglz for Canadian soils in the pH range 4.0-5.6, and by Duangpatra et a1. 13 for Kentucky soils in the pH range 4.8-7.0.…”

Section: Discussionmentioning

confidence: 99%

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The effects of soil compaction, form of nitrogen fertiliser, and fertiliser placement on the availability of manganese to barley

1983

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A study was made of the effects of seedbed compaction and use of fertiliser (application rate, placement, and the choice of ammonium or nitrate forms of nitrogen) on the availability of manganese to barley in light soils in East Scotland. Generally, the uptake of manganese by the plants was increased by increasing the amount of fertiliser applied and by compaction of theseedbed, althoughno significant increase inextractable soil manganese was detected. The increase in uptake from wheel-tracks (where the compression had resulted in an element of fertiliser placement), compared with nonwheeled areas, was much greater than the effect due to overall plot compaction by tractor wheels in the absence of a fertiliser placement effect. Combine-drilling of fertiliser with the seed resulted in large increases in plant uptake of manganese in non-wheeled areas, compared with uptake where the fertiliser had been broadcast, but had no significant effect in the wheel-tracks where growth and uptake were generally better. In some, but not all, experiments, significant reductions in pH occurred in the soil beneath the wheel-tracks which were very closely correlated with increases in extractable manganese. Use of ammonium sulphate as nitrogen source also reduced the pH, compared with calcium nitrate, and this, too, increased extractable manganese and greatly improved plant growth. The probable cause of enhanced manganese availability was soil acidification brought about by nitrification of ammonium fertiliser and/or by H+ ion secretion by roots to balance the uptake of ammonium and other cations. The uptake of manganese by the plant was further improved either through concentration of fertiliser in the root zone by placement, or by soil compaction which resulted in shallow sowing of seed and a closer active relationship between roots and broadcast fertiliser. Other possible factors involved were (a) a greater exudation by roots of compounds able to dissolve insoluble manganese, in compacted soil; (b) contact reduction processes; (c) stimulation of root growth, leading to more efficient uptake by the plant, where higher rates of fertiliser were used or where the fertiliser was concentrated in localised zones in the soil..

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Section: Discussionmentioning

confidence: 99%

“…Relationship between pH (HzO)and CaClz-extractable manganese in soils sampled on eight farms in S.E.Scotland, 1978 and1979. …”

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confidence: 99%

The effects of soil compaction, form of nitrogen fertiliser, and fertiliser placement on the availability of manganese to barley

1983

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“…High levels of Mn were largely due to complexation with SO 4 and to high ionic strength as evidenced by the high levels of SO 4 and electrical conductivity measured in extracts. The activity of the toxic, divalent Mn-ion predicted by GEOCHEM was 0.14 and 0.43mM in Al-soil and S-soil, respectively, representative of levels known to occur in acidic soils (Broomfield, 1987;Duangpatra, 1976;Gnahoua and Reisenhauer, 1980).…”

Section: Soil Acidification Pot Experimentsmentioning

confidence: 79%

Inhibitory effects of acidified soil on the soybean/Bradyrhizobium symbiosis

Cline

Kaul

1990

Plant Soil

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Effects of acidic soil factors (AI, H-ion, Mo, and Mn) upon the soybean (Glycine max (L.) Merr. cv. Essex)/Bradyrhizobium japonicum symbiosis were examined in acidified soil. Plants were grown under full sunlight in pots containing N-deficient soil (pH 6.7) or similar soil amended with sufficient A12(SOa) 3 or elemental S to give soil pH values of 4.8 and 4.6, respectively, and water-extractable AI levels of 30 and 14 txM, respectively. Other treatments consisted of the addition of inorganic N or inoculation with commercial or locally-isolated B. japonicum. Acidification did not reduce shoot or root weights of plants receiving inorganic N but reduced (P ~ 0.05) shoot and root dry weights, nodule dry weights and numbers, shoot N concentrations, and chlorophyll levels of inoculated plants. Shoot dry weights and nodulation of inoculated plants were greater (P ~< 0.05) in A12(SO4)3-amended soil than in S-amended soil. Addition of Mo was not beneficial. It was concluded that reduced plant growth was caused by the effects of acidified soil on nodulation and that H-ion toxicity was probably the most limiting factor. Effects of AI, Mn, or Mo appeared less likely.

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“…However, this kind of difference can hardly be differentiated by correlation method. R values between different extractable fractions and plant content of the trace elements were often found to be very similar (Duangpatra et al, 1979;Khamparia et al, 1994;Levesque and Mathur, 1988).…”

Section: * Fax No: + 88010 62555381mentioning

confidence: 92%

“…The correlation methods were also used to evaluate the suitability of a regression equation to predict plant accumulation from the extraction data. Generally, the two kinds of evaluation were performed simultaneously (Duangpatra et al, 1979;He et al, 1991;Khamparia et al, 1994;Randall et al, 1976;Salcedo and Ellis, 1979;Shuman and Anderson, 1974).…”

Section: * Fax No: + 88010 62555381mentioning

confidence: 99%

Bioavailability index for quantitative evaluation of plant availability of extractable soil trace elements

1996

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A new index, Bioavailability Index (BI) and the corresponding experimental method were developed for quantitative evaluation of bioavailability of the extractable soil trace elements. Soils were first treated with various extractants (DTPA, HC1, NH2OH.HC1 + HC1) separately to remove the extractable elements. The soils after extraction were washed with deionised water to eliminate the extractant and its pH was adjusted with Ca0 and finally restored to its original pH level. Wheat (Triticum aestivum L.) and rape (Brassica chinensis) were planted in the untreated and treated soils for 8 weeks. The concentrations of the trace elements in plants were determined after harvest. Nutrient accumulation by plants is significantly reduced due to removal of extractable trace elements from the soil. BI of the extractable fraction was proportional to the ratio of plant accumulation reduction to trace element extractability. In the present study, BI value of the total content of soil trace elements was designated as 1. Though only a minor fraction of the total soil nutrient, generally less than 5%, was removed by DTPA, the nutrient accumulation by plants, especially for wheat, was reduced greatly, leading to relatively large BI values. For wheat, the average BI values of the eight nutrients Cu, Mn, Zn, Ni, Co, Pb, Cr, and V were found to be 22.7, 17.6 and 17.4 for the three testing soils, and for rape, the corresponding values of 8.9, 10.0 and 11.0 were obtained, indicating that the DTPA-extractable elements represent the highly available fraction of the total content. The BI values for HCl-extractable elements were much lower compared with those for DTPA. For wheat, the average BI values for the three soils are 2.0, 1.9 and 2.4, and for rape, the corresponding values are 4.8, 4.1 and 3.7. The high availability of DTPA-extractable trace elements and relatively low availability of HCl-extractable trace elements highlight the significant role that chelation action might play in plant nutrient acquisition.The different responses of wheat and rape to the soils previously subjected to the same extraction procedure could be explained by their genotypical differences in sensitivity to nutrient deficiencies. The quantitative nature of BI makes it valuable in the study of nutrient bioavailability and plant accumulation mechanisms.

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Estimating Plant-Available Manganese in Selected Kentucky Soils1

Cited by 10 publications

References 0 publications

The effects of soil compaction, form of nitrogen fertiliser, and fertiliser placement on the availability of manganese to barley

The effects of soil compaction, form of nitrogen fertiliser, and fertiliser placement on the availability of manganese to barley

Inhibitory effects of acidified soil on the soybean/Bradyrhizobium symbiosis

Bioavailability index for quantitative evaluation of plant availability of extractable soil trace elements

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