South African Avocado Growers’ Association

1998 Yearbook

Volume 21

Table of Contents

 

v         Foreword
D L Milne

vii       Chairman's Report/Voorsittersverslag

1        Breeding for Resistance to and Biocontrol of Phytophthora cinnamomi Root Rot - Progress Report
J A Duvenhage and S Kremer-Köhne

3        Commercial Avocado Rootstock Evaluation at Merensky Technological Services: Further Progress in 1997
D J Roe, T M Morudu and J S Köhne

7        Development of Avocado Rootstocks with Improved resistance/tolerance to Phytophthora Root rot
Z Bijzet

13      Performance of Rootstock Cultivars in the Avocado Phase II Evaluation Programme : 1997
A D Sippel, C W Matsha and Z Bijzet

19      Non-Destructive Avocado Fruit Firmness Measurement
J S Köhne, S Kremer-Köhne and S H Gay

22      Soil Boron Application for Control of Boron Deficiency in the Avocado in the KwaZulu-Natal Midlands
Z J Bard and B N Wolstenholme

26      Mulching of Avocado Orchards : QuaVadis?
B N Wolstenholme, C S Moore-Gordon and A K Cowan

29      Development of Improved Avocado Cultivars
Z Bijzet

32      Cultivar and Selection Performance in the Avocado Phase II Evaluation Programme: 1997
A D Sippel, B Snijder, C W Matsha and Z Bijzet

35      Maintenance and Evaluation of Avocado Cultivars and Selections
S Kremer-Köhne

36      Effect of Photo-inhibition on Fruit Growth and Development in Hass Avocado
I Bertling and A K Cowan

39      Avocado Quality Assurance: Who? Where? When? How?
B L Milne

48      Metabolic Control of Hass Avocado Fruit Growth
A K Cowan, E W Richings, R F Cripps and A L P Cairns

52      Foliar Application of Uniconazole (Sunny) to Avocado Trees to Improve Fruit Size and Yield and to Change Fruit shape
H D Erasmus and W H Brooks

54      The Effect of Growth Inhibitors on Vegetative Growth, Fruit Size and Fruit Set in Hass Avocado Trees: A Preliminary Report
M G Penter, P J C Stassen

58      Manipulation of Avocado Trees to Control Tree Size - A Four Year Progress Report
B Snijder and P J C Stassen

63      Pollination of Hass Avocados
P J Robbertse, M F Johannsmeier and T M Morudu

69      Avocado in Israel -1998
U Gafni

71      Control of Colletotrichum Speckle of Hass Avocado
M H Schoeman and B Q Manicom

73      Bio-Ekologiese Inligting van Suigbesies op Avokado
I J Bruwer

78      Studies on Hemiptera
M A van den Berg

80      Monitoring Fruit Flies in Avocado Orchards
T Grové, M S De Beer, S Dreyer and W P Steyn

83      Evaluation of Avogreen as Post-harvest Treatment for Controlling Anthracnose and Stem-end Rot on Avocado Fruit
L Korsten, E Towsen and V Claasens

88      Post-Harvest Vapour Heat Treatment of Hass and Fuerte Avocado for the 1997 Season
P L Weller, B N Wolstenholme and M J Savage

93      Further Evaluation of Hot Water / Air Heatshock Treatment of South African Avocados
M Kritzinger, S J Kruger and M Bezuidenhout

97      Potential of the 'Hall's Avoscan' as a Tool to Identify Soft Fruit during Packing for Export
S J Kruger and A W Rowell

100     The Effect of Intransit and Storage Conditions on the Quality of Avocados - 1997 Season
G J Eksteen, J Bezuidenhout, C Keevy, R Nelson, N Reay and R. Robinson

109     Handling Procedures for Avocados, 1998 Season
G J Eksteen