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Note on comparative efficiencies of sulfur 35 fertilizer labeling and soil labeling techniques for determining the uptake of applied sulfur


, : Note on comparative efficiencies of sulfur 35 fertilizer labeling and soil labeling techniques for determining the uptake of applied sulfur. Indian Journal of Agricultural Sciences 45(8): 385-388

A greenhouse experiment was conducted in pots, using 'Bragg' soybean (Glycine max (L.) Merr.) as the test crop and CaSO4 .cntdot. H2O, (NH4)2SO4 and Na2SO4. In the fertilizer-labeled series the fertilizer was tagged with 35S at specific activity of 0.25 mCi/g S. In the soil-labeled series 450 g of soil were tagged with 0.450 mCi 35S with wetting, mixing and drying cycles, and 10 g lots of the labeled soil were mixed with the soil of each pot along with unlabeled S fertilizer. In the plants the percentage of S absorbed from the fertilizer in the fertilizer-labeled series was calculated from the ratio of specific activity of S in the plant and in the labeled fertilizer standard. In the soil-labeled series the specific activity of the plant grown without S was taken as the standard. In the fertilizer-labeled series the S uptake increased with successive levels of applied S from all sources under test, except with 20 ppm S as Na2SO4, which slightly depressed the S uptake over its 10 ppm level. Of the 3 S sources, Na2SO4 contributed the lowest percentage of fertilizer S in the nutrition of soybean plants; this treatment also depressed the dry matter yield. Absorption of fertilizer S increased in pots treated with CaSO4 .cntdot. 2H2O or (NH2)SO4. In the plants of the soil-labeled series the percentage S derived from the fertilizer increased with successive levels of S from (NH4)2SO4 only; the values decreased with Na2SO4. The percentage of fertilizer uptake in the soil-labeled series was higher than in the fertilizer-labeled series; the order of performance of different sources for S supply as determined by the soil-labeling method was not the same as found with the fertilizer-labeling method. The response of dry matter yield of the fertilizer-labeled series due to applied S is supported by radio-assay data, but the data obtained from the soil-labeled series do not corroborate the yield responses. In evaluating the efficiency of applied S for determining the uptake of S from the fertilizer, as isolated from the native soil souce, the soil-tagging method is less satisfactory than the fertilizer-tagging method.

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Knuth A.; Gabbert H.; Moll R.; Dippold W.; Meyer Zum Bueschenfelde K H., 1987: Markers in medullary thyroid cancer established in tissue culture. Proceedings of the American Association for Cancer Research Annual Meeting 28: 83

Yoshimatsu, H.; Uehara, M., 1968: On some fibrin-like properties of the secretion products of the salivary gland of the Chironomus larva. Annotationes Zoologicae Japonenses, 41: 107-112

Wang, L.; Mizuno, F.; Ueda, S., 2002: Evolutionary genomics of transcription factor brain-2 in mammals. American Journal of Human Genetics 71(4 Supplement): 397, October

Abdel-Khalek, A.M.; Omar, M.M., 1988: Death anxiety, state and trait anxiety in Kuwaitian samples. 200 male and 277 female undergraduates at the University of Kuwait completed the Templer's Death Anxiety Scale and Spielberger, et al.'s State-Trait Anxiety Inventory for which retest reliabilities were adequate. Women had higher mean sc...

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