Modification of the NH<sub>4 </sub>HCO<sub>3</sub>‐DTPA soil test to omit carbon black

Soltanpour, P. N.; Workman, S. M.

doi:10.1080/00103627909366996

Cited by 204 publications

(100 citation statements)

References 5 publications

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“…The modified method gave higher values for Fe, Cu, and Zn, but lower values for Mn than did the standard DTPA test. Soltanpour and Workman (1979) reported similar results on soils from Colorado.…”

Section: Comparison Of Standard Test With Ab-dtpa Testsupporting

confidence: 73%

“…Because of the large drying temperature effects observed with the standard DTPA soil test, variously dried Shano and Sonsen soils were also extracted using the modified ammonium bicarbonate DTPA test (Soltanpour and Workman, 1979). The two tests give similar results; Fe increased linearly with drying temperature although at a slightly different slope for the Shano soil.…”

Section: Comparison Of Standard Test With Ab-dtpa Testmentioning

confidence: 99%

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The DTPA‐Extractable Iron, Manganese, Copper, and Zinc from Neutral and Calcareous Soils Dried Under Different Conditions

Leggett¹,

Argyle²

1983

Soil Science Soc of Amer J

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DTPA (diethylenetriaminepentaacetic acid)‐extractable Fe, Mn, Cu, and Zn were determined on several neutral and calcareous soils dried at various temperatures. Extractable Fe increased linearly over the drying temperature range 22 to 100°C, whereas Mn increased in an irregular manner. Values for Cu and Zn changed only slightly over this temperature range. Extractability of all four elements increased when field‐moist samples were air dried; Fe by a factor of 2 to 3, and Mn, Cu, and Zn by a factor of about 1.3 to 1.5. The increases in extractable Fe and Mn appear to result from separate temperature and dehydration effects and are only partially reversible with rehydration and moist incubation. The results of this study indicate that sample handling be standardized for calibration and routine tests before DTPA‐extractable Fe and Mn can be used as reliable diagnostic tests for these elements. Close control of drying conditions for Zn and Cu analysis may be desirable but is not as critical as for Fe and Mn.

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Section: Comparison Of Standard Test With Ab-dtpa Testsupporting

confidence: 73%

Section: Comparison Of Standard Test With Ab-dtpa Testmentioning

confidence: 99%

The DTPA‐Extractable Iron, Manganese, Copper, and Zinc from Neutral and Calcareous Soils Dried Under Different Conditions

Leggett¹,

Argyle²

1983

Soil Science Soc of Amer J

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“…Elles nécessitent des normes d'interprétation de l'analyse de sol calées sur la réponse du végétal (Laurent et Castillon, 1989) (VSBo, 1986 ;Houba et al, 1990 ;Din, 1993). La Singh, 1993 ;Jopony et Young, 1994 (Shuman, 1988 ;Gatti et al, 1991 ;Didier et (Andersson, 1975 (Andersson, 1975 (Schneider, 1989 (Soltanpour et Workman, 1979 ;Boon et Soltanpour, 1991).…”

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Intérêt de différents réactifs d'extraction chimique pour l'évaluation de la biodisponibilité des métaux en traces du sol

Lebourg¹,

Sterckeman²,

Ciesielski³

et al. 1996

Agronomie

100

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“…All the selected sites were cultivated by wheat previously. Fertility level estimated (Richards, 1954;Soltanpour and Workman, 1979) from the air dried, ground to pass through 2 mm sieve bulk soil samples collected with 0-15 cm depths were as in Table 1. The eight different treatments were imposed in four replications according to randomized complete block design.…”

Section: Methodsmentioning

confidence: 99%

Efficacy of Various Rhizobium Strains to Different Varieties of Groundnut (Arachis hypogea L.)

Aslam¹,

Ahmad²,

Mahmood³

et al. 1999

Pakistan J. of Biological Sciences

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Groundnut variety BARD-699 produced significantly the most promising yield than that of variety BARI-89 at Attock, Fatehjang and NARC, Islamabad. Rhizobium strains, NC-92 was found to be less efficient as compared to TAL-1000; TAL-1371. Nodule dry mass and number of pods per plant were much higher than that of control treatment. Although a significant difference in growth and yield of both the varieties due to Rhizobium inoculation was observed but on average basis TAL-1000 and TAL-1371 gave significantly better response for both the varieties in improving growth and yield at all sites. Nevertheless, future prospects for groundnut production are good in Pakistan if the farmers are realized to practice inoculation technology in their fields.

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Modification of the NH₄HCO₃‐DTPA soil test to omit carbon black

Cited by 204 publications

References 5 publications

The DTPA‐Extractable Iron, Manganese, Copper, and Zinc from Neutral and Calcareous Soils Dried Under Different Conditions

The DTPA‐Extractable Iron, Manganese, Copper, and Zinc from Neutral and Calcareous Soils Dried Under Different Conditions

Intérêt de différents réactifs d'extraction chimique pour l'évaluation de la biodisponibilité des métaux en traces du sol

Efficacy of Various Rhizobium Strains to Different Varieties of Groundnut (Arachis hypogea L.)

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Modification of the NH4 HCO3‐DTPA soil test to omit carbon black

Cited by 204 publications

References 5 publications

The DTPA‐Extractable Iron, Manganese, Copper, and Zinc from Neutral and Calcareous Soils Dried Under Different Conditions

The DTPA‐Extractable Iron, Manganese, Copper, and Zinc from Neutral and Calcareous Soils Dried Under Different Conditions

Intérêt de différents réactifs d'extraction chimique pour l'évaluation de la biodisponibilité des métaux en traces du sol

Efficacy of Various Rhizobium Strains to Different Varieties of Groundnut (Arachis hypogea L.)

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Product

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Modification of the NH₄HCO₃‐DTPA soil test to omit carbon black