Towards a better understanding of entomopathogens for insect biocontrol
Insects are prone to infection by various microbes, termed entomopathogens (from the Greek: Entomon = insects and pathos = suffering).
These disease-causing entities contribute to the suppression of insect pests through not only natural infection,...
Weed control for HERBICIDE RESISTANCE
September 2018
HESTIA NIENABER, ARC-Small Grain, Bethlehem
Herbicide resistance is a well-known occurrence in many crops in South Africa. Since the first confirmed case of herbicide resistant wild oats in 1986, various cases of herbicide resistance...
Biosecurity systems under pressure
It is estimated that pests and pathogens destroy between 10% and 40% of food production globally. There are ways to deal with this problem, starting with biosecurity and plant health management systems.
But this is...
Effective weed strategies in sorghum
September 2018
DR MARYKE CRAVEN, MARLENE VAN DER WALT and DR JEANETTA SAAYMAN-DU TOIT, ARC-Grain Crops, Potchefstroom
The slow growth rate of sorghum and the sensitivity of this crop to most herbicides, present the greatest challenges...
Importance of monitoring insects in a management programme
September 2018
DR ASTRID JANKIELSOHN, ARC-Small Grain, Bethlehem
The aim of a management programme is to prevent pest infestations in a crop. Managing insect pests requires flexibility since insects are site, crop and area specific. Monitoring...
Sojaboonentstowwe in Suid-Afrika: ‘n Vervaardigersperspektief
September 2018
WILMA MAC PHERSON, South African Bioproducts Organisation
Die voordeel van sojaboonproduksie in rotasie met mielies – en dan natuurlik ook die wisseling in mieliepryse – het in die afgelope dekade ‘n dramatiese groei in...
Aktiewes – van a,b,c tot 1,2,3
Die Herbicide Resistance Action Committee (HRAC-SA) bestaan uit verteenwoordigers van alle chemiese maatskappye in Suid-Afrika en skakel in onder HRAC-Global. Die oorkoepelende doelwit van HRAC-Global is om opbrengste en kwaliteit van alle gewasse te...
Update on wheat rusts in South Africa
Wheat rusts are fungal diseases that primarily infect the leaves and stems of wheat. There are three types of rust diseases (stem rust, leaf rust and stripe rust) which commonly occur on wheat worldwide.
All...
Herfskommandowurm: Toevlugsoord benadruk
Die herfskommandowurm (Foto 3) is ’n ernstige plaag op mielies in Suid-Afrika wat skade aanrig aan die kelkblare en aan mieliekoppe. Hierdie kommandowurm kan betekenisvolle opbrengsverliese veroorsaak en moet daarom dringend beheer word.
Bt-mielies wat...
TELA to control stem borers in SA
Bt maize is genetically modified to express insecticidal proteins and have been planted in South Africa since 1998. In the 2017/2018 season, 1,62 million hectares of Bt maize were planted locally, which is 71%...
