South African Avocado Growers’ Association
1994 Yearbook
Volume 17
Table of Contents
1
Foreword
J M Kotzé
2 SAAGA
Chairman's Report 1993
J C Toerien
4
Challenges
to the Avocado Producer
J C Toerien
6
The
role of the PPECB in Export Avocados
D Schreuder
8
Intensification
of Avocado Trade in the European Community
H Sartorius Von Bach
Die
Verband tussen Opbergingstemperatuur en -Tyd op
die Gehalte van Avokado's Oorsee
J J Bezuidenhout and G J
Eksteen
18
Progress
Report: Cold Storage Temperature Regimes and Tolerance of Avocado Fruit to Cold
Storage
D J Donkin, T Mans, J G M Cutting
and M J Slabbert
21 Die
Invloed van Verskillende
Temperatuur Regimes op die
Vrugkwaliteit van Pinkerton
J M Schutte
22
Progress
Report: Gas Treatment of ‘Fuerte’ Avocados to Reduce Cold Damage and Increase
Storage Life
M E Allwood and J G M Cutting
28 Rind
Moisture Loss - The Cause of Cold Damage
in Harvested Avocado Fruit?
D J Donkin and J G M Cutting
32
Control
of Avocado Pre-harvest Diseases with Bacillus subtilis and Fungicide
sprays
Lise Korsten, E E De Villiers, J A Duvenhage and J M Kotzé
35
Monitoring
the resistance of Phytophthora cinnamomi to Fosetyl-AI and H3PO3
J A Duvenhage
38
Fungicidal
Action of Phosphite in Avocado Root Tips on Phytophthora cinnamomi
M De V Van Der Merwe and J M Kotzé
46
Isolation
and Pathogenicity of Avocado Post Harvest Pathogens from Westfalia and Other
Avocado Producing Areas
Lise Korsten, Gina M Sanders
and Eileen Grosse-Wieischede
49
Control
of Black Spot of Avocado by Organic and Inorganic Fungicides
J A Duvenhage
53
Principles
of Steam Pasteurization
D P Bungay
56
Avocado
Production Research at Merensky Technological Services and Westfalia Estate -
An Overview
J S Köhne,
D G Smith and D L Milne
58
Review
of Agricultural Research
on Avocados in Natal
M J Slabbert
59
Steam
Pasteurization as an alternative to Methyl Bromide Fumigation for Disinfecting
Container Medium
Ilse De Jager and J M Kotzé
64 Current
Status of the Avocado Breeding Programme
Zelda Bijzet, A D Sippel
and B Snijder
67
The
Current Status of Avocado Phase II Evaluations at the ITSC
A D Sippel, Zelda Bijzet, B Snijder and C P Du Plooy
70
Evaluation
of New Avocado Scion and Rootstock Cultivars
W Conradie, D G Smith, J S Köhne and Sylvie Kremer-Köhne
72 Selection of Phytophthora Tolerant Avocado
Rootstocks
P J J Koekemoer, H J Breedt, B Q Manicon and Zelda Bijzet
75
Pollen/Stigma
Intercompatibility between Different Avocado Cultivars
P J Robbertse, L A
Coetzer and E Tomer
78
Horticultural
Performance of Fuerte Avocado on Duke 7 and G6 Rootstocks
J S Köhne and Sylvie Kremer-Köhne
80
Is
Biennial Bearing of Avocados Inevitable?
S J Davie and Martie Van Der Walt
83
Progress
Report: A Preliminary Report on the Effect of Mulching on 'Hass' Avocado Fruit
Growth
C Moore-Gordon, J G M Cutting
and B N
Wolstenholme
88 Die Effek van Verskillende Besproeüngsregimes op Opbrengs
en Vruggrootte in Hass Avokado- Voorlopige Resultate
J H Van Eyk
91
Avocado
Fruit Maturity (CV Pinkerton)
as Affected by Fruitset
Period
A D Sippel, M
A Holmes and J F
Claassens
95
Uptake
and Transport of Boron in Avocado Seedlings
L A Coetzer, P J Robbertse, R O
Barnard and E Tomer
99
Ovules
of 'Fuerte' Flowers with Reduced Male Function
E M A Steyn
103 Avokado
Oesskatting deur Enkelboom
Monsterneming -
Vorderingsverslag
J J Bezuidenhout
104
Pollination
of 'Ryan' Avocado During 1993 Flowering Season at Politsi - 2nd Report
A P Du Toit and D Swart
106
Stinkbug Damage on Avocado Fruit in the Nelspruit
Region
P H Joubert and Valerie Claassens
109
Moth
Pests of Avocados
C Erichsen and A S Schoeman
113
Identification
and Potential Pest Status of Looper on Avocado
C Erichsen and A S Schoeman
117
Report
on the Natural Occurance of Insect Pollinators in an Avocado Orchard - 2nd
Report
C D Eardley and M W Mansell
119
Effect
of Insect Growth Regulator C G A 211446 on
the Third Instar of the Heart Shaped Scale on Avocados
W P Steyn, W J Du Toit and E A De Villiers
121
An
Overview of the New Zealand Avocado Industry
R Bailey
123
Avocado
Research in New Zealand
C N Hale