Research Report – 2016

Chairman’s Report / Voorsittersverslag
Kosie Eloff

ENTOMOLOGY

The influence of plant volatiles on some indigenous heteropterans in avocados
FA Botha, BM Botha and PS Schoeman

Stink bug control in avocados: The past, the present and the future
SP Schoeman

Indigenous host plants for economic important fruit fly species in South Africa
T Grové, K de Jager, MS de Beer and K Hannweg

Progress on entomopathogenic nematodes (EPNs) for the control of false codling moth Thaumatotibia leucotreta (Lepidoptera: Tortricidae)  in avocado orchards in South Africa
WP Steyn, MS Daneel, MM Slabbert and AP Malan

PATHOLOGY

Phosphite treatments as part of early preventative control of Phytophthora root rot, pre- and post-planting
M Grobler, J Meyer and J Liebenberg

Bark and soil penetrants used in alternative application methods of phosphonate for the control of Phytophthora root on avocado
M Grobler, J Meyer, JJ Serfontein and J Liebenberg

Using plant volatiles in biodegradable sachets and exposure of volatiles under pallet covers to control postharvest decay in avocados
M Bill, PC Obianom, L Korsten, Z Mavuso, Z van Rooyen and D Sivakumar

The efficacy of combined application of edible coating and moringa extract in enhancing fruit quality in avocado (Persea americana Mill)
SZ Tesfay

Evaluating foliar phosphonate sprays as an alternative to trunk injections for controlling avocado root rot preventatively – Preliminary report
A McLeod, P Novela, P Pieterse, I Beukes, S Masikane and JPB Wessels

HORTICULTURE

Relationship between fruit pulp mineral composition and the ripening profiles of South African ‘Hass’ avocado fruit
FJ Kruger, O Volschenk and D Lemmer

Finding the best polliniser for ‘Hass’ avocado and the effect of honeybees as pollinators
MM Bezuidenhout, ES du Toit and PJ Robbertse

Avocado orchard soil surface crusting and PAM
GP Nortjé and SF Schoeman

Growing avocados under shadenetting – Year 3
RJ Blakey, Z van Rooyen, JS Köhne, KC

POSTHARVEST

Effect of 1-MCP, production region, harvest time, orchard slope and fruit canopy position on ‘Hass’ avocado colour development during ripening
N Mathaba, S Mathe, SZ Tesfay, TP Mafeo and R Blakey

Firmness retention properties of ripened ‘Maluma’ avocado fruit
FJ Kruger, D Lemmer and O Volschenk

Review of 30 years postharvest research
J Bezuidenhout

Development of storage protocols for ultra-late season ‘Lamb Hass’ and ‘Reed’ avocado fruit
FJ Kruger, D Lemmer and O Volschenk

Influence of photo-selective shade netting to improve fruit quality at harvest and during postharvest storage
PP Tinyane, M Makwakawa, Z van Rooyen, D Sivakumar

Intra-seasonal variation in the ripening rates of South African avocados stored at different temperatures
FJ Kruger and D Lemmer