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 Kotz
é, L Korsten

52.      Optimization of Biological Control of Phytophthora Root Rot of Avocados
W P Landman, N Labuschagne and J M Kotz
é

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 K
öhne

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 K
öhne 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-K
öhne

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