Abstract not available

English: The lack of reliable procedures for the economic evaluation of centre pivot investment alternatives results in unsatisfactory research results in respect of the economics of irrigation on the one hand, and often ...

Afrikaans: As aanloop tot die tema is die tydruimtelike evolusie van die Suid- Afrikaanse ekonomiese sisteem in breê trekke geskets. Daar Qwaqwa deel is van die breër Suid-Afrikaanse ekonomiese struktuur is die identifisering ...

Afrikaans: In die geval van hoë produserende melkbeeste word groot hoeveelhede kragvoer, by twee geleenthede per dag aan melkkoeie verskaf. Hierdie praktyk mag moontlik met 'n lae rumen-pH na kragvoervoeding, verskuiwings ...

English: Roodeplaat Dam is a warm monomictic and eutrophic waterbody, which is situated in a summer rainfall area. A definite thermocline and hypolimnion are found in summer, together with a high primary production, ...

Afrikaans: Gewasprodusente in die Middel-Vrystaat het gevind dat die inskakeling van 'n somergewas in bestaande wintergewasproduksiestelsels, met gepaardgaande langer braakperiodes, aanleiding gee tot verhoogde ...

English: Since little is known of the occurence, distribution and possible vector roles of mosquitoes in the western Orange Free State, a trapping survey was undertaken to determine the species richness, relative abundance ...

English: During this project the field-water balances in four subhabitats of the Burkea savanna in Phase II of the Savanna Ecosystem Project at Nylsvley were studied.The project included a study of the water redistribu ...

A) In Chapter 1 the need for a yeast identification system in the wine industry is highlighted. The definition, as well as taxonomic development of the ascomycetous yeasts are discussed as well as the problems ...

Afrikaans: Die lae konsentrasie van flavan-3,4-diole in natuurlike bronne en die gepaardgaande veeleisende isolasie daarvan, oefen 'n remmende uitwerking op oligomeersintese, wat op sodanige verbindings gebaseer is, uit. ...