South African Avocado Growers’ Association
2012 Yearbook
Volume 35
Table of Contents
POSTHARVEST
8
Effects of harvest
maturity, storage temperature, controlled atmosphere and SmartFresh on the
post-harvest vascular staining disorder of ‘Maluma’ avocado fruit
SD Mhlophe and FJ Kruger
12
Respiration and
softening rates of ‘Maluma’ and ‘Ryan’ avocados and the effect that cold chain
breaks have on the ripening and quality of these cultivars
FJ Kruger and D Lemmer
22
Effects of low
temperature storage and cold chain breaks on anti-oxidants and C7 sugars in
‘Fuerte’ avocados from South Africa
A Lütge, I Bertling and JP Bower
28
The physiological
effects of ultra-low temperature shipping and cold chain break on ‘Hass’
avocados
RD Kok, JP Bower and I Bertling
34
Interaction of storage,
ethylene and ethylene inhibitors on post-harvest quality of ‘Maluma’
AA Ernst
42
Investigation into the
current rind lesion problems experienced with the ‘Pinkerton’ cultivar
FJ Kruger
47
Does orchard soil
moisture content at the time of harvest infl uence the post-storage ripening
pattern of ‘Hass’ avocado fruit?
FJ Kruger and LS Magwaza
ENTOMOLOGY
60
Modelling possible
avocado bug outbreaks using a practical GIS reporting system
AJ Alberts
PATHOLOGY
63
Evaluation of ultra-low
volume fungicide applications for the control of diseases on avocado fruit –
Results from the 2010/11 season
JM van Niekerk and ZS Mavuso
69
Systemic resistance
inducers applied pre-harvest for anthracnose control in ‘Fuerte’ avocados
RJ Bosse, JP Bower and I Bertling
72
Development of a more
effective post-harvest treatment for the control of post-harvest diseases of
avocado fruit – Results from 2011
ZS Mavuso and JM van Niekerk
HORTICULTURE
76 Detection of pre-harvest cold damage in avocado fruit using an
online near-infrared spectrometer
RJ Blakey
79 Calibrating avocado irrigation through xylem water potential
measurements – Preliminary report
NJR Roets, SP Schoeman, RB Cronje and NR Murovhi
84 Soil health, fruit yield, quality and nutritional value of
avocado as influenced by different mulch types – Year 2 of 3
B Nzanza and P Pieterse