South African Avocado Growers’ Association 1999 Yearbook (Volume 22): Table of Contents

South African Avocado Growers’ Association

1999 Yearbook

Volume 22

Table of Contents

Vii Chairman's report

1 The Hass small-fruit syndrome: Solving a 50 million rand per season problem
R F Cripps, E W Richings, N J Taylor and A K Cowan

7 Die invloed van blomontwikkeling op die koloniserings - en migrasiepatrone van suigbesies (Hemipterans) by avokado
I J Bruwer

12 Factors affecting biocontrol efficacy of Bacillus subtilis against Colletotrichum gloeosporioides
W Havenga, E S De Jager and L Korsten

22 Some factors affecting pollination and yield of Hass avocados
M F Johannsmeier and T M Morudu

26 Geïntegreerde beheer van suigbesies (Hemipterans) by avokado
I J Bruwer

31 The false codling moth, Cryptophlebia leucotreta (Meyrick) (Lepidoptera: Tortricidae) on avocado - a literature review
T Grové, W P Steyn and M S De Beer

34 Performance of new avocado rootstocks at Westfalia Estate
D J Roe and T M Morudu

35 Survey of fungicide resistance of Colletotrichum gloeosporioides from different avocado production areas
G M Sanders and L Korsten

39 Reaction of avocado wood on injections into the trunk
P J Robbertse and J A Duvenhage

48 Hot water treatment of avocado fruit to induce cold tolerance
S Kremer-Köhne

51 Pruning mature and encroached avocado trees to restimulate and maintain production and fruit quality
B Snijder and P J C Stassen

55 Application of a highly sensitive avocado sunblotch viroid indexing method
M Luttig and B Q Manicom

62 Training and manipulation of young avocado trees
B Snijder and P J C Stassen

69 Chemical manipulation as part of a management programme for improved fruit yield and quality in avocado orchards
M J Penter and P J C Stassen

76 Handling procedures for avocados: 1999 season
G J Eksteen

84 Flower pruning of Hass avocado when going into an "on" year in an attempt to decrease alternate bearing and increase fruit size
D J Roe and T M Morudu

88 Thermal fogging of fungicides for the control of Pseudocercospora purpurea on avocado
J A Duvenhage and J S Köhne

91 Host status of Hass avocado fruit for the false codling moth, Cryptophlebia leucotreta (Meyrick) (Lepidoptera: Tortricidae)
T Grové, W P Steyn and M S De Beer

93 Die invloed van organiese bemesting op die opbrengs en vruggrootte van Hass avokadobome
H J Erasmus, W G Gaum and A Hildebrand

96 Developing and optimizing techniques to facilitate the development of avocado rootstocks resistant to Phytophthora cinnamomi
Z Bijzet

102 The effect of heat shock treatments followed by a quarantine cold treatment on avocado fruit quality
T Grové, M S De Beer and W P Steyn

106 Aspects of water economy of Hass avocado trees (Persea americana, cv. Hass). I. Plant water status and gas exchange
Y Sharon

110 Mulching and potassium relationships in Hass avocados to increase yield and fruit size
W van Niekerk, B N Wolstenholme and M A Johnston

115 Biological and chemical control of root rot
J A Duvenhage

120 Evaluation of new Hass-like avocado cultivars at Merensky Technological Services
S Kremer-Köhne