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Effect of Soil Type and Nutrient Status on the Yield and Composition of Tagetes Oil (Tagetes minutaL.)

Autor: E.H. Graven, G. Benians, L. Webber, M. Venter, J. B. Gardner

Publikováno v: Journal of Essential Oil Research. 3:303-307

A glasshouse fertilizer trial (omission principle) was conducted to investigate the effect of the nutrient status of three problem Ciskei soils on the yield and quality of the essential oil of Tagetes minuta L. Acute inherent deficiencies of N and P

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6207d6e90a1f46e3f0e43a10ded5e994
https://doi.org/10.1080/10412905.1991.9697948

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The solubility of cations in soils

Autor: G. Benians

Publikováno v: Journal of Soil Science. 36:231-238

SUMMARY Water-soluble and exchangeable basic cations, and electrical conductivity, were measured in temperate and tropical soils. The ‘availability’ of cations in temperate soils is a function of both the amounts of exchangeable ions and the elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::141faef0469aa04a7e4914dd2272a748
https://doi.org/10.1111/j.1365-2389.1985.tb00327.x

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CONCENTRATIONS AND ACTIVITIES OF IONS IN SOLUTIONS DISPLACED FROM BASALTIC SOILS

Autor: G. Benians, G. R. Fitzhugh, P. Scullion

Publikováno v: Journal of Soil Science. 28:454-461

Summary Soil solutions displaced from Antrim basaltic soils were analysed for major inorganic constituents. The solutions were nearly saturated with aluminium and phosphate but not sulphate. Iron concentrations were greatly in excess of ferric hydrox

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00bed8375a26991bf4eba9c8d5d2ab34
https://doi.org/10.1111/j.1365-2389.1977.tb02253.x

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