South African Avocado Growers’ Association
2005 Yearbook
Volume 28
Table of Contents
POSTHARVEST
14 Developing appropriate ripening protocols for the avocado ‘ripe
and ready’ programmes
D Lemmer, R T Malumane, Y Nxundu and F J Kruger
18 New advances in the development of quality assurance norms for
the South African avocado export industry
D Lemmer, T R Malumane, Y Nxundu, J Tandane and F J Kruger
24 Sugars as energy sources – is there a link to avocado fruit
quality?
I Bertling and J P Bower
33 Contribution of the seed to fruit development: A tool to
understand avocado tree management and fruit maturity parameters
M B Kalala, A T Modi and A K Cowan
PROCESSING
40 A process to prevent browning of frozen avocado halves and
chunks
J P Bower and M T Dennison
ROOTSTOCKS AND CULTIVARS
43 Avocado root rots in Andalucia: A review
R M Pérez Jiménez, T Zea Bonilla and C J López Herrera
47 Production variability among Hass avocado trees grafted onto
Mexican rootstocks
M Castro, C Fassio, N Darrouy and A Ben Ya’acov
50 Evaluation of the Hass-like avocado cultivars Harvest, Gem and
Grace at Westfalia Technological Services
A T Bruwer and M L Mokgalabone
ENTOMOLOGY
53 Heteropterans causing epidermal protuberances on avocado fruit and
investigation of possible chemical control methods
A Alberts
56 “Sagte” insekdoders vir die beheer van suigbesies gedurende
middel tot laat somer –voorlopige verslag
I J Bruwer
PATHOLOGY
60 Effects of soluble silicon against Phytophthora cinnamomi root
rot of avocado (Persea americana Mill.) nursery plants
T F Bekker, N Labuschagne and C Kaiser
65 Alternative control of Cercospora spot on Fuerte – progress
report
A Willis
70 In-vitro inhibition of mycelial growth of several
phytopathogenic fungi, including Phytophthora cinnamomi by soluble
silicon
C Kaiser, R van der Merwe, T F Bekker and N Labuschagne