Improvements in the deniges colorimetric method for phosphorus and arsenic

Truog, E.; Meyer, Alfred H.

doi:10.1021/ac50067a011

Cited by 251 publications

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“…Subsamples were ashed in a mixture of nitric and perchloric acids. Phosphorus was estimated by the molybdenum blue method (Truog and Meyer 1929).…”

Section: Methodsmentioning

confidence: 99%

Nutrient Uptake and Distribution in Subterranean Clover During Recovery from Nutritional Stresses I. Experiments with Phosphorus

Bouma¹

1967

Aust. Jnl. Of Bio. Sci.

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SummaryYoung subterranean clover plants (Trifolium 8ubterraneum L. cv. Mt. Barker), raised at three phosphorus levels in culture solutions, were transferred to complete solutions and to solutions without phosphorus and grown for a further 7 days.After transfer to complete solutions, the roots retained approximately the same proportion of absorbed phosphorus at all pretreatment levels. In previously deficient plants most of the phosphorus translocated to the shoots was distributed to leaves existing at transfer, while in non· deficient plants most was distributed to leaves formed after transfer.In a similar experiment with "P, phosphorus translocated to existing shoots during the first few days of recovery was less readily available the greater the previous phosphorus stress. By contrast, phosphorus accumulated in the roots was more available for subsequent translocation to new shoots the greater the previous stress.After transfer of plants in the first experiment to solutions without phosphorus, no net losses of root phosphorus were found for any of the pretreatments. Phosphorus in new leaves and petioles formed after the transfer had all been derived from existing shoots. Export from these shoots was relatively greater the higher the phosphorus status of the plant at transfer.

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“…Subsamples were ashed in a mixture of nitric and perchloric acids. Phosphorus was estimated by the molybdenum blue method (Truog and Meyer 1929).…”

Section: Methodsmentioning

confidence: 99%

Nutrient Uptake and Distribution in Subterranean Clover During Recovery from Nutritional Stresses I. Experiments with Phosphorus

Bouma¹

1967

Aust. Jnl. Of Bio. Sci.

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“…This method does not distinguish between living and dead mycelium. Phosphorus contents of root and shoot material were determined by wet-ashing followed by analysis for phosphorus using the Molybdenum Blue method (Truog and Meyer, 1929).…”

Section: Harvestsmentioning

confidence: 99%

The Development of Endomycorrhizal Root Systems: I. Spread of Infection and Growth‐promoting Effects With Four Species of Vesicular‐arbuscular Endophyte

et al. 1977

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SUMMARYFour vesicular-arbuscular endophytes were inoculated into onions cultured in soil in a growth chamber. Dry weight, root length, infected root length, phosphorus content and quantity of external mycelium were measured at intervals. Three endophytes produced similar hyphal inflows, growth increments and external mycelium. One endophyte produced no growth increase in the host, and had little external mycelium and slow increase in percentage infection.

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“…Phosphorus was determined by the colorimetric method of TRUOG and MEYER (13), and potassium by the colorimetric method as described by MORRIS and GERDEL (11).…”

Section: Methodsmentioning

confidence: 99%

Transpiration and the Absorption of Mineral Salts

Wright¹

1939

Plant Physiol.

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IntroductionThe effect of varying rates of transpiration upon the absorption of mineral salts is an old question that has been studied by numerous investigators. No attempt will be made here to review these bulky data. Earlier opinions, as summarized by CURTIS (2), were usually in favor of increased absorption of mineral salts. More recent studies by various investigators are characterized by a decided lack of unanimity of opinion. The work of HASSELBRING (7), KIESSELBACH (9), MUENSCHER (12), MENDI-OLA (10) and others indicates that different rates of transpiration are without effect upon the absorption of mineral salts. Investigations conducted by HAss and REED (6), HITCHCOCK and ZIMMERMAN (8), and FRFELAND (3, 4) support the contention that transpiration is a factor which affects the

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Improvements in the deniges colorimetric method for phosphorus and arsenic

Abstract: A detailed study has been made of the Denigbs colorimetric method for phosphorus. The concentrations of reagents at which phosphomolybdate gives a maximum

Cited by 251 publications

References 0 publications

Nutrient Uptake and Distribution in Subterranean Clover During Recovery from Nutritional Stresses I. Experiments with Phosphorus

Nutrient Uptake and Distribution in Subterranean Clover During Recovery from Nutritional Stresses I. Experiments with Phosphorus

The Development of Endomycorrhizal Root Systems: I. Spread of Infection and Growth‐promoting Effects With Four Species of Vesicular‐arbuscular Endophyte

Transpiration and the Absorption of Mineral Salts

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