South African Avocado Growers’ Association

1988 Yearbook

Volume 11

Table of Contents

 

1        Marketing and research strategies
J M Kotze

2        Openingsrede avokadonavorsingsimposium 1988
A A B Bruwer

3        Noodsaaklikheid van 'n doeltreffende avokadoteelprogram
J H Terblanche

5        Marktendense in die Suid-Afrikaanse avokadobedryf
F J Lourens

8        Factors that influence the domestic demand for avocados in South Africa with special reference to urban black consumer preferences
J van Zyl and G J Conradie

11      Institutional aspects of a marketing strategy for avocados
J van Zyl

16      A survey of urban black consumer preferences with regard to avocados in the Pretoria/Johannesburg area
J van Zyl and G J Conradie

23      Soil depth : The third dimension
R O Barnard and M J Slabbert

25      Nutrient elimination treatments with potted avocado plants (Progress report)
R O Barnard

27      Phytophthora cinnamomi, the cause of crown and trunk canker of Duke 7 avocado rootstocks in South Africa
J H Lonsdale, T Botha, F C Wehner and J M Kotzé

29      Mode of resistance in avocados after treatment with phosphorous acid
T Botha, J H Lonsdale and G C Schutte

32      Distribution of phosphite in avocado trees after trunk injection with phosphorous acid and its possible repsonse to Phytophthora cinnamomi
G C Schutte, T Botha, J J Bezuidenhout and J M Kotzé

35      Preliminary trials to assess the resistance of three clonal avocado rootstocks to crown canker caused by Phytophthora cinnamomi
J H Lonsdale, T Botha and J M Kotzé

38      Effectiveness of various zinc sources injected with Aliette Ca
A W G Rowell

39      Shrink-wrap of avocados in combination with waxing and fungicide
A W G Rowell

41      Cold storage capacity of avocados from different geographic regions
A W G Rowell

48      Evaluation of nursery procedures to eliminate graft-take problems
C B McKenzie, B N Wolstenholme and P Allan

53      Methods of increasing avocado fruit production
J S Köhne

56      Reduction in yield in avocado orchards bordering on Eucalyptus plantations
J S Köhne and U Kremling

57      Paclobutrazol trials in avocado orchards: initial results from Queensland and Natal
B N Wolstenholme, A W Whiley, J B Saranah, P R R Symons, P J Hofman and H J Rostron

60      Does zinc play a role in reducing pulp spot? (Preliminary report)
L L Vorster and J J Bezuidenhout

61      The influence of the time temperature interaction on the shelf-life and internal quality of avocados
L L Vorster, J C Toerien and J J Bezuidenhout

65      Die invloed van boor op stuifmeelkieming, stuifmeelbuisgroei en vrugset by enkele avokado-kultivars
P J Robbertse and L A Coetzer

68      Pre- and postharvest measures for long-term storage of avocados
J P Bower

73      Alternatiewe van fosetiel-AI vir die chemiese beheer van Phytophthora wortelvrot
J J Bezuidenhout and J C Toerien

75      Biological control of postharvest diseases of avocado
L Korsten, J J Bezuidenhout and J M Kotzé.

79      Die hartvormige dopluis, Protopulvinaria pyriformis (Cockerell) op avokado's
W J duToit and E A deVilliers

81      Report on overseas tour
J C Toerien