Organisation: Citrus Research International (CRI)
Extension briefs for April and May 2021 : Apr / May 2021
By Hannes Bester, MC Pretorius, Wayne Mommsen and Catherine Savage (Citrus Research International) Integrated pest management (T.G. Grout, S.D. Moore and A. Manrakhan) Phytosanitary pests All the recommendations made in the Extension Briefs for February and March also apply to this period. Fruit fly control in citrus areas is critical due to phytosanitary concern associated […]
The blue-green citrus nibbler : Apr / May 2021
A visitor amongst us By Evans Mauda and Sean Moore (Citrus Research International) Background Chrysomelids, commonly known as leaf beetles, belong to one of the largest families of the order Coleoptera, the Chrysomelidae family. Insects in this family show great diversity, and variation in colour, shape and size. Adults and larvae of these species are […]
CRI Postharvest Webinar 2021 : Apr / May 2021
With Covid-19 still disrupting our lives, CRI was forced to host the very popular CRI Postharvest Workshops online this year. The six two-day workshops held across the country normally attract over 1 000 delegates and is a wonderful tech transfer, networking and social opportunity for packhouses, sponsors and presenters alike. By Catherine Savage Each sponsor […]
Brown Rot : Feb / Mar 2021
BROWN ROT Getting to know your citrus postharvest diseases Brown rot is the term we tend to give to any number of brownish rots, simply based on the colour, and we never look further to correctly identify the disease. Unfortunately, from QC reports or pictures, it is not always easy to tell what the cause […]
Trapping for Asian Citrus Psyllid in Southern Africa : Feb / Mar 2021
Current status and the way forward Aruna Manrakhan*, Xolani Sibiya, Glynnis Cook, Rochelle de Bruyn, Wayne Kirkman, Elma Carstens, Mathys Pretorius, Paul Fourie and Solomon Gebeyehu The presence of the Asian Citrus Psyllid (ACP) (Fig. 1), Diaphorina citri Kuwayama (Hemiptera: Liviidae), in parts of Africa (Fig. 2) (Ajene et al., 2020a; Oke et al., 2020; […]
Extension Briefs for February and March 2021 : Feb / Mar 2021
By Hannes Bester, Mathys Pretorius (aka MC), Wayne Mommsen and Catherine Savage Mealybug (S.D. Moore) Growers should be scouting for mealybug regularly, by inspecting underneath calyces and thereby determining the percentage of fruit infested. Where mealybug is under good biocontrol, infestation should peak during December in the northern production areas and during January in the […]
Ants – Friend or foe? : Feb / Mar 2021
The presence of ants in citrus orchards can be altered from being a detrimental occurrence into a meaningful benefit to growers, if managed properly. Citrus Research International, Port Elizabeth; Centre for Biological Control, Rhodes University, Makhanda. By Sean Moore The pugnacious ant, Anoplolepis custodiens (Smith), and the brown house ant, Pheidole megacephala (Fabricius), are the […]