Zobrazeno 1 - 10
of 76
pro vyhledávání: '"P. H. T. Beckett"'
Publikováno v:
Plant and Soil. 49:395-408
Theupper critical level of a potentially toxic element is its minimum concentration in actively growing tissues of a plant at which yield is reduced.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::402d540322faded09b609fc059d4111d
https://doi.org/10.1007/bf02149747
https://doi.org/10.1007/bf02149747
Autor:
Duncan J. Campbell, P. H. T. Beckett
Publikováno v:
Journal of Soil Science. 39:283-298
SUMMARY Toxic trace metals may percolate to the ground water from sewage sludge disposed onto land. Analyses are presented of the soil solution from a slightly acid loamy soil treated 7 years earlier with single applications of digested sewage sludge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cc30c94dbbc5b48e1101488f232697f
https://doi.org/10.1111/j.1365-2389.1988.tb01215.x
https://doi.org/10.1111/j.1365-2389.1988.tb01215.x
Autor:
A. O. Ogunkunle, P. H. T. Beckett
Publikováno v:
Plant and Soil. 107:85-93
This study compares the efficiency of pot trials in the glasshouse or outdoors, and trials on undisturbed soil cores (100 cm deep; 15 cm wide), at simulating field trials. Yields of spring barley (Hordeum vulgare, cv Julia) were measured at sites on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10d5bdd12bae905885ff885d4dcdfea8
https://doi.org/10.1007/bf02371548
https://doi.org/10.1007/bf02371548
Autor:
P. H. T. Beckett, S. W. Bie
Publikováno v:
Journal of Soil Science. 27:101-110
Summary The best procedure for mapping the soils of an area, and the effort this will require, depend upon the intricacy of its soil pattern. This paper presents one way of describing such intricacy-by a graph of variance against area sampled-and an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a18892cf63f0bf4674d70dffdee74226
https://doi.org/10.1111/j.1365-2389.1976.tb01980.x
https://doi.org/10.1111/j.1365-2389.1976.tb01980.x
Autor:
P. H. T. Beckett, R. D. Macnicol
Publikováno v:
Plant and Soil. 85:107-129
Tissue concentrations of young plants, or of young leaves, of crop plants or species used as test plants offer some promise as simple and approximate indicators of toxic levels of elemental pollution of the soil environment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::607690ed3eb11988c9ae6a0f9096fd25
https://doi.org/10.1007/bf02197805
https://doi.org/10.1007/bf02197805
Autor:
P. H. T. Beckett, A. O. Ogunkunle
Publikováno v:
CATENA. 15:529-538
The choice of agricultural land use or management can be based entirely on a soil map or on results of soil analysis or on a combination of the two. This paper presents the kind of comparison that should form the basis for choosing among these altern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e6e7e0d78c96f13cfe65cb98445a37c
https://doi.org/10.1016/0341-8162(88)90004-5
https://doi.org/10.1016/0341-8162(88)90004-5
Publikováno v:
Journal of Soil Science. 37:455-467
SUMMARY Most soil properties vary down a soil profile. In nearly every case a graph of the value of the property against depth (the ‘true’ curve) is smooth. However, a soil sample is usually taken from the whole of a horizon so that its analysis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f746ed397d9c9205e4197ea75e2ec00
https://doi.org/10.1111/j.1365-2389.1986.tb00377.x
https://doi.org/10.1111/j.1365-2389.1986.tb00377.x
Autor:
A. O. Ogunkunle, P. H. T. Beckett
Publikováno v:
The Journal of Agricultural Science. 108:555-560
SummaryThe reliability of the soil series as a basis for crop yield prediction was examined by comparing the influence of soil and management (inter-farmer differences) on the variance of barley grain yield. Yields of barley were measured from farmer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74dd3afb21da1b3c685f7ac51755f63b
https://doi.org/10.1017/s0021859600079946
https://doi.org/10.1017/s0021859600079946
Publikováno v:
Plant and Soil. 70:3-14
Dried digested sewage sludge (cake) was mixed, in varied proportions, with three contrasting soils and cropped intermittently to ryegrass or young barley over a period of 710 days. Results are presented for periods 1–4, 13–16 and 22–23 months a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a85e421acb32c7579edd3880e1c8865b
https://doi.org/10.1007/bf02374745
https://doi.org/10.1007/bf02374745
Autor:
R. D. Davis, P. H. T. Beckett
Publikováno v:
New Phytologist. 81:155-173
SUMMARY As part of a study on the use of young barley plants to monitor accumulations of toxic elements arising from sludge or waste disposal, we have examined the interactions between Cu, Ni and Zn in young barley. We find that Cu has little effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b917efbc6f0e1b4ad1eb0c8b0e0e54b4
https://doi.org/10.1111/j.1469-8137.1978.tb01615.x
https://doi.org/10.1111/j.1469-8137.1978.tb01615.x