Uptake of Available Selenium by Certain Range Plants

Hamilton, John; Beath, O. A.

doi:10.2307/3895338

Cited by 27 publications

(15 citation statements)

References 5 publications

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“…Se concentrations toxic to livestock were found in samples from all application rates in at least one of the five cuttings harvested over two seasons ( Table 2). Evidently Se from BaSeO 4 on alkaline soil is as available for plant absorption as it is from Na 2SeO4 applied to acid and alkaline soils (8,9). Thus, use of BaSe04 would require the same precautions necessary when using soluble selenates to avoid plant concentrations of Se toxic to livestock.…”

Section: Resultsmentioning

confidence: 99%

“…have repeatedly produced plant concentrations of Se toxic to livestock (3,8,9,12,15). Where total Se concentrations in the soil in the Central United States range from 2 to 13 ppm, Se toxicity problems have occurred repeatedly (13).…”

mentioning

confidence: 99%

“…Se treatment of alkaline soils may be especially difficult, because Se compounds may oxidize to form soluble selenates in an alkaline environment (6, /2). Se concentrations toxic to animals were found in 20 plant species grown in the greenhouse on alkaline soils receiving 5 to 20 ppm Se as Na2Se0s, Na2Se04 or organic Se in the form of ground plant material (9). Alfalfa (Medicago sativa L.) grown in the greenhouse absorbed Se in concentrations toxic to livestock from four of seven soils treated with Se at a 2.5-ppm rate as selenized concentrated superphosphate (6).…”

mentioning

confidence: 99%

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Selenium Concentrations in Alfalfa from Several Sources Applied to a Low Selenium, Alkaline Soil

Carter¹,

Brown²,

Robbins³

1969

Soil Science Soc of Amer J

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Two laboratory-prepared ferric hydroxy bi-selenites and CuSeOs applied to Portneuf silt ham in the field provided slowly available Se to alfalfa, resulting in Se concentration adequate but nontoxic for livestock. These materials have potential as Se fertilizers at low application rates. The ferric hydroxy bi-selenites offer little or no advantage over CuSe0s. Se from BaSe04 alone, BaSeO4-BaSO4 mixtures, and CuSe04 was absorbed by alfalfa in concentrations toxic to livestock A small fraction of applied elemental Se was available immediately after application, providing adequate Se to alfalfa for livestock. The remaining elemental Se was rather inert, and supplies only slightly more Se to alfalfa than did the untreated soil the year following application.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Selenium Concentrations in Alfalfa from Several Sources Applied to a Low Selenium, Alkaline Soil

Carter¹,

Brown²,

Robbins³

1969

Soil Science Soc of Amer J

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“…The ratio of Se in roots to Se in tops shows that Se is more readily translocated from the roots when taken up from added selenate than from added selenite. Hamilton and Beath (1964) Selenite, selenate, and organic Se at several rates were included in another study (Hamilton & Beath, 1963) of Se uptake involving rangeland forbs and grasses. Selenium from the selenate form was generally absorbed more efficiently than that from the selenite form.…”

Section: Plant Response To Selenium Speciesmentioning

confidence: 99%

Selenium in Seleniferous Environments

Mayland

James

Panter

et al. 2015

Selenium in Agriculture and the Environment

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Selenium is biologically important because (i) it is essential in animal and possibly plant metabolism, (ii) in many areas diets do not contain sufficient Se to meet, animals' needs, and (iii) in other areas it is toxic to animals when it occurrs in high concentrations in soil, water, plants, fly ash, or in aerosols. Animals require 0.05 to 0.1 mg Se/kg in their diets to prevent Se deficiency but suffer Se toxicosis when dietary levels exceed 5 to 15 mg Se/kg. The earth's crustal materials generally contain <0.1 mg Se/kg. Higher concentrations are found in Cretaceous shales. The Seaccumulator plants growing on the seleniferous soils may contain hundreds or even thousands of mg Se/kg. However, the nonaccumulator grasses and forbs seldom accumulate >50 mg Se/kg and more often contain <5 mg Se/kg. Soils and plants may discharge volatile forms of Se into the atmosphere. However, plants may also absorb measurable amounts of gaseous Se from the atmosphere. Anthropogenic activities impact the amount of Se entering our nation's lakes, rivers, and the atmosphere. Combustion of coal and incineration of municipal waste exhaust Se into the environment. In addition, crop-fallow and irrigation practices that allow leaching waters to pass through seleniferous strata prior to intersecting with surface flow, augment the Se levels encountered by plant and animal life.In 1857, U.S. Army Surgeon T.W. Madison described toxicity symptoms in horses (Equus caballus) grazing near Fort Randall, SD (Rosenfeld & Beath, 1964). Since then, ranchers in that area have continued to experience livestock losses. They associated the toxicosis with the saline seeps and outcrops, com-

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“…Given the importance of the cattle industry to the U.S. Southwest and the potential extent of reclaimed areas (50-200 km 2 ) in South Texas, it is helpful to examine the plant-soil interaction of range species adapted to that region. Hamilton and Beath (1963) and Ehlig et al (1968) Mean of 5-10 replications.…”

Section: Growth and Se Uptake Of Range Plants 2745mentioning

confidence: 99%

Growth and selenium uptake of range plants propagated in uranium mine soils

Hossner

Woodard

Bush

1992

Journal of Plant Nutrition

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High soil selenium (Se) levels have been found in association with uranium deposits in Texas. A concern that high Se concentrations may be found in forages grown on reclaimed mine lands prompted this investigation. A native soil sampled near the mining area, and overburden materials sampled from two Se enriched uranium mine spoil sites were compared in a plant growth study in the greenhouse. Shoot yields and shoot Se concentration in each of ten grasses common to the region were determined from plants harvested three weeks after germination and from shoot regrowth harvested four weeks after the first harvest.Shoot weights were reduced for 5 of the 10 species growing in soils with medium and high Se status. Total shoot weights of Cynodon dactylon and Panicum coloratum from two harvests were consistently highest in all soil materials and are highly recommended for use as a stabilizing cover crop for lands disturbed from uranium mining. Generally, no correlation was observed between shoot weight and plant Se concentration or uptake in the 10 species. However, plant tissue Se concentrations in all species for at least one of the two harvest dates were above 1 Corresponding author. Present address:

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Uptake of Available Selenium by Certain Range Plants

Cited by 27 publications

References 5 publications

Selenium Concentrations in Alfalfa from Several Sources Applied to a Low Selenium, Alkaline Soil

Selenium Concentrations in Alfalfa from Several Sources Applied to a Low Selenium, Alkaline Soil

Selenium in Seleniferous Environments

Growth and selenium uptake of range plants propagated in uranium mine soils

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