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Die invloed van variërende vrywatervlakke in grond van die noordwestelike O.V.S. op verbouing van gewasse (veral mielies)
(1991)
Results of research about the origin of water tables in yellow brown apedal sands which occur extensively in the northwestern O.F.S. and its influence on the production of maize are discussed. Morphologic characteristics, ...
Die potensiaal en dinamika van Acacia karroo indringing, verdigting en afsterwing op die BC-landtipe
(North-West University (South Africa), 1991)
The occurrence of ligneous types has increased radically in the grassland
biome of South Africa in the course of the past decades. Thousands of hectares
of initially high potential grass veld have become useless for ...
Die ondersoek na spesifieke bakteriegroepe in die feses van geselekteerde proefpersone
(North-West University (South Africa), 1991)
Micro-organisms play an important role in the gastrointestinal tract of humans. These
organisms are mainly aerobic and anaerobic bacteria. This study was limited to the isolation
and cultivation of specific groups of ...
Die ultrastrukturele histopatologie van die infeksie van mielies deur Ustilago maydis (D.C.) Corda
(North-West University (South Africa), 1991)
THE ULTRASTRUCTURAL HI STOPATHOLOGY OF THE INFECTION OF MAIZE BY
USTILAGO MAYDIS (D.C.) CORDA.
Although the life cycle of the smut disease caused by Ustilago
maydis has been known for a long time, little is known of ...
'n Evaluering van analisetegnieke vir die bepaling van kalkbehoefte van goudmynslikdam-materiaal vir die vestiging van plantegroei
(North-West University (South Africa), 1991)
AN EVALUATION OF ANALYSIS TECHNIQUES FOR THE DETERMINATION
OF LIME REQUIREMENTS OF GOLD MINE SLIMES DAM MATERIAL FOR THE
ESTABLISHMENT OF VEGETATION
Owing to the potential pollution problems inherent to gold mine slimes ...