South African Avocado Growers’ Association
1996 Yearbook
Volume 19
Table of Contents
v Foreword — Walking on the
Wild Side
C J Partridge
vii Voorsittersverslag/Chairman's
Report 1995/1996
A A Ernst
1. Boron Nutrition of Avocados
A W Whiley, T E Smith, B N Wolstenholme and J B Saranah
8. Post-harvest
Responses of Hass Avocados to High Temperature Treatments — An Overview from
New Zealand
A B Woolfe, S Ball, C B Watkins, T J Spooner, J H Bowen, M Lay-Yee and I B
Ferguson
11. Avocado
Cultivar Breeding — Results and Prospects
Z Bijzet, B Cilliers, A D Sippel and B Snijder
14. Avocado
Rootstock Breeding — New Developments and Intricacies
Z Bijzet, H J Breedt, P J J Koekemoer and B Cilliers
16. Early
Results from the Phase-II Avocado Rootstock Selections
A D Sippel, B Snijder and J Werksman
21. Early Results from the
Phase-II Avocado Cultivar Selections
A D Sippel, B Snijder and J Werksman
26. A Progress Report of
Avocado Rootstock Research at Merensky Technological Services
D J Roe and J S Köhne
28. Preliminary
Trials on Soil Application for the Control of Boron Deficiency in Avocados
Z J Bard and B N Wolstenholme
31. Effect
of Foliar Feeding of Hass at Various Stages of Flowering
C C Mans
33. Die
Hemiptera-plaagkompleks op Avokado's in die Kiepersol-gebied
I J Bruwer
36. The
Natural Occurrence of Insect Pollinators in an Avocado Orchard
C B Bardley, M W Mansell
39. Microbes
Associated with the Avocado Flower and Fruit: The Good, the Bad and the Ugly
J Smith and L Korsten
41. Comparison
of Colletotrichum gloeosporioides Isolates from Various Avocado
Producing Areas
G M Sanders, K R Everett and L Korsten
44. Progress in Avocado
Pathology Research at Merensky Technological Services
J A Duvenhage and J S Köhne
49. Effect
of Staggered Copper Sprays on Pre- and Post-harvest Diseases of Avocado in
KwaZulu-Natal Midlands
M Boshoff, J M Kotzé, L Korsten
52. Optimization
of Biological Control of Phytophthora Root Rot of Avocados
W P Landman, N Labuschagne and J M Kotzé
54. Optimizing
Culturing Conditions for Bacillus subtilis
L Korsten and N Cook
59. In
Vitro Clonal Propagation of Avocado Rootstocks
H Wessels
61. Root
Pruning and Hedgerowing of Avocado Trees at Westfalia Estate: What Have We
Learnt?
D J Roe and J S Köhne
63. Hass
Yield and Fruit Size as Influenced by Pollination and Pollen Donor — a Joint
Progress Report
P J Robbertse, L A Coetzer, M F Johannsmeier, D J Swart, J S Köhne and T M Morudu
68. Simplification
and Improved Sensitivity of Avocado Sunblotch Viroid Detection
B Q Manicom and M Luttig
70. The
Influence of Tree and Fruit Manipulation on Avocado Tree Physiology —
Preliminary Results
S J Davie, M Van der Walt and P J C Stassen
73. Manipulation
of Hass Avocado Trees — Pruning
P J C Stassen and B Snijder
77. Manipulation
of Hass Avocado Trees — Fruit Induction and Thinning
P J C Stassen and B Snijder
80. Girdling Trial Yield
Data
H L Francis
81. Correlation
between Cross-pollination and Fruit Yield
H L Francis
82. The
Hass Small-Fruit Problem: Role of Physiological Stress and its Amelioration by
Mulching
C S Moore-Gordon and B N Wolstenholme
87. Some
Pros and Cons of Mulching Avocado Orchards
B N Wolstenholme, C S Moore-Gordon, S D Ansermino
92. Possible Means to
Increase Hass Avocado Fruit Size
S Kremer-Köhne and J S Köhne
93. The
Influence of Rainfall and Irrigation on the Maturity Parameters of South
African Export Avocados
F J Kruger, V E Claassens
96. Pilot
Study on the Respiration Patterns of the Major South African Export Avocado
Cultivars
F J Kruger
100. Towards
Improved Maturity Standards for Fuerte Avocado Fruit in the Cool Subtropical
Kwazulu-Natal Midlands
C Kaiser, S D Keevil, J Levin and B N Wolstenholme
105. Comparison
of Export Avocado Maturation at Burgershall during the '94 and '95 Seasons
F J Kruger and V E Claassens
109. Effect
of Detergent Sanitizers on Post-harvest Diseases of Avocado
M Boshoff and L Korsten
111. Fuerte Fruit Quality as Influenced by Post-harvest
Chlorine and Wax Treatments
S Kremer-Köhne
113. Temperature
Regimes for Avocados Grown In Kwazulu-Natal
C C Mans
116. Post-harvest
Vapour Heat Shock Treatments of Fuerte Avocado Fruit
Z J Bard and C Kaiser