South African Avocado Growers’ Association

1992 Yearbook

Volume 15

Table of Contents

 

i         Foreword
J M Kotzé

1.       Advantages and disadvantages of the single channel marketing of citrus exports from Southern Africa
D C Lötter

4.       The economy of avocado production in South Africa
J C Toerien

7.       The economic impact of processing on the avocado industry
F J G de Waal

9.       Effect of Bacillus subtilis and fungicide sprays for control of pre-harvest diseases of avocado
Lise Korsten, J H Lonsdale, E A de Villiers and J M Kotzé

12.     The influence of nitrogen and calcium on Phytophthora cinnamomi and the effect of calcium on resistance of avocado to root rot
J A Duvenhage, J M Kotzé and Erna M C Maas

15.     Efficacy of methyl bromide in nurseries
L C McLean and J M Kotzé

18.     Effect of different dosages of methyl bromide on nursery pathogens
L C McLean and J M Kotzé

24.     Effect of phoshite in avocado roots on the zoospores of Phytophthora cinnamomi
M de V van der Merwe, J M Kotzé and A Hall

27.     Biological control of Phytophthora root rot in vitro and in vivo
M de V van der Merwe

29.     Characterisation of dsRNA in avocados
G Cook, L H Nel and J M Kotzé

32.     Die voorkoms en beheer van Swartvlek op Westfalia Landgoed
T Botha

35.     Evaluation of systemic fungicides as pre-harvest treatments of avocados
J H Lonsdale

39.     Analysis of transit temperature and fruit condition of South African export avocados
J J Bezuidenhout

41.     1991 Temperature survey of export avocados
G J Eksteen and B Henning

45.     Biologie en beheer van die kokosneutstinkbesie op avokado's
T van der Meulen and W J du Toit

47.     The role of ants on avocado pests
W J du Toit and E A de Villiers

49.     Economic losses due to insect pests of avocado fruits in the Nelspruit/Hazyview region of South Africa during 1991
E Erichsen

55.     Onus thripobonts (Anthocoridae), a potential biocontrol agent of Heliothrips haemorrhoidalis and Seknothrips rubrodnctus (Thripidae) on avocado fruit in the Eastern Transvaal
G B Dennill

57.     An ecological study of the damage done to avocado fruit by Hemiptera in the Hazyview region, South Africa
G B Dennill and F M A Dupont

62.     Basis for a practical technique for monitoring thrips in avocado orchards
G B Dennill and M J Erasmus

64.     Increasing relative maturity alters the base mineral composition and phenolic concentration in avocado (Persea americana Mill) fruit
J G M Cutting, B N Wolstenholme and J Hardy

68.     Increased yield through girdling of young Hass trees prior to thinning
J S Köhne

69.     Yield and fruit quality of Fuerte and Hass on clonal rootstocks
Sylvie Kremer- Köhne and J S Köhne

70.     Application of the isozyme technique for identification of avocado cultivars
Michéle Truscott and Elizabeth A Lewis

72.     Growth rates of Pinkerton avocado fruit
A D Sippel, W Conradie and N J F Claassens

75.     Breeding and evaluation strategy on avocado
C P du Plooy, Zelda Marais and A Sippel

78.     Overview of lipids in the avocado fruit, with particular reference to the Natal Midlands
C Kaiser, M T Smith and B N Wolstenholme

83.     Production potential of Fuerte on seedling rootstocks
D G Smith and J S Köhne

86.     Pot trial with acid soil ameliorants on avocados under glasshouse conditions
R O Barnard and Wilma H Mentz

89.     Booropname by avokado
P J Robbertse, L A Coetzer and B P H Janse van Vuuren

94.     Evaluering van permanente grondbedekkers te Everdon Landgoed, Natal
C C Mans and D A Hattingh

97.     Research projects sponsored by the California Avocado Society
H Leonard Francis