A study of Sminthurus viridis (L.) (Collembola) in the Western Cape Province
Date
1964
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Stellenbosch : Stellenbosch University
Abstract
ENGLISH ABSTRACT: Investigations on Sminthurus viridis (L.) in the winter rainfall region
of South Africa are described. The food plants, distribution,
history of occurrence-in South Africa and economic importance of the
species are discussed. A detailed description of the species is presented
and it is further demonstrated that colour variation in this species
appears to be dependent on prevailing temperature conditions and is of
little, if any, taxonomic value. The granting of specific status to
the variety nigromaculate is shown to be invalid.
The various stages of development and the habits of the pest are
described. The influence of temperature, relative humidity, soil
moisture conditions, soil texture, soil reaction, food plant relations,
and population density on the biology of the pest were investigated and
the results of these investigations are presented.
A new method for the conduct of population surveys of the pest in
the field is described. The seasonal history of the pest at Caledon
was investigated during 1961 and 1962 with especial attention being paid
to the influence of grazing practices and variation in meteorological
conditions on fluctuation in population density. Observations on the
occurrence of the pest on irrigated pastures during the summer months
are also discussed. It is concluded that : the major factor influencing
the occurrence and activities of the pest in this region is variation
in moisture conditions.
AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar.
AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar.
Description
Thesis (MScConsEcol)--Stellenbosch University, 1964.
Keywords
Lucerne flea -- South Africa -- Western Cape, Alfalfa -- Diseases and pests -- South Africa -- Western Cape, Sminthuridae -- Effect of temperature on, Collembola -- South Africa -- Western Cape, Sminthurus viridis (L.) --South Africa -- Western Cape, UCTD