Zobrazeno 1 - 10
of 81
pro vyhledávání: '"J.W.B. Stewart"'
Publikováno v:
Soil Fertility and Organic Matter as Critical Components of Production Systems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de87ad2f4d6eef41a9c6f69565d80a80
https://doi.org/10.2136/sssaspecpub19.c1
https://doi.org/10.2136/sssaspecpub19.c1
Autor:
J.W.B. Stewart, C.V. Cole
Publikováno v:
Environmental and Experimental Botany. 23:235-241
The productivity of agricultural soils requires an active cycling of soil P pools through plants and microbial populations. P cycling rates are thus closely linked to transformations of C, N, S and other mineral nutrients. A systems approach to an un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2739efe9b416576589e112c420c422f2
https://doi.org/10.1016/0098-8472(83)90046-1
https://doi.org/10.1016/0098-8472(83)90046-1
Publikováno v:
Analytica Chimica Acta. 97:327-333
The rapid determination of protein in plant material based on spectrophotometric determination of amino acids in protein hydrolysates with trinitrobenzenesulfonic acid has been adapted to flow injection analysis. With the manifold described, a routin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bb1ecf856e07fb146e396560feb5d0e
https://doi.org/10.1016/s0003-2670(01)93439-7
https://doi.org/10.1016/s0003-2670(01)93439-7
Autor:
J.W.B. Stewart, Muchlas M. Tahir
Publikováno v:
Radiation Botany. 15:323-328
The effect of four straw and two 137 cesium levels, with and without fertilization, on 137 cesium uptake by wheat plants was studied using soils from the Blaine Lake and Waiteville soil associations of Saskatchewan (Canada). Uptake of 137 cesium usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1adc137df25e908ee3c8173d22bfd706
https://doi.org/10.1016/0033-7560(75)90003-4
https://doi.org/10.1016/0033-7560(75)90003-4
Autor:
J. Růžička, J.W.B. Stewart
Publikováno v:
Analytica Chimica Acta. 82:137-144
The effect of sample volume, tube length, tube diameter, peak height and sampling rate on the determination of phosphorus in acidic plant digests was investigated, and optimal conditions for the flow injection method are described. Sampling rates of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b43e185a2b780198428ffed3905ffbc
https://doi.org/10.1016/s0003-2670(01)82211-x
https://doi.org/10.1016/s0003-2670(01)82211-x
Autor:
J.W.B. Stewart, J.W. Hamm
Publikováno v:
Communications in Soil Science and Plant Analysis. 4:233-240
A saraimplified procedure for the measurement of total mercury in soils and some preliminary results for Saskatchewan are presented. Soil samoles were digested in aqua regia at low temperatures, followed by determination of Hg with a simplified flame
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c4697ef2530d364439590a77d95a0e0
https://doi.org/10.1080/00103627309366441
https://doi.org/10.1080/00103627309366441
Publikováno v:
Chemosphere. 3:33-34
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c242122da39bf9b1fb77eb5970886c5
https://doi.org/10.1016/0045-6535(74)90042-3
https://doi.org/10.1016/0045-6535(74)90042-3
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