South African Avocado Growers’ Association

1990 Yearbook

Volume 13

Table of Contents

 

1.       Openingsrede — 1990 — simposium: Nuwe eise aan die navorser
J M Kotzé

2.       The Golden Avocado Award

3.       Report on a visit to Mexico
J S Köhne

4.       Verslag oor die 1989-avokadoseisoen en voorgestelde aksies vir 1990
G J Eksteen

6.       Recommendations for the control of root rot
Erna M C Maas and J M Kotzé

8.       Fertilisation guidelines for high yields and good fruit quality in avocado
J S Köhne, T J Koen, C J Partridge, D Westcott, D B Woods, R A Abercrombie, J Botha and D Farrell

11.     Observations on overseas markets during the 1989 avocado season
H Leclereq

14.     Guidelines for cultivars with improved production in mind
C J Partridge

16.     Future prospects with new avocado cultivars and elite rootstocks
A W Whiley, J S Köhne, M L Arpaia and G S Bender

RESEARCH/NAVORSING

21.     Prospects for vegetative-reproductive growth manipulation in avocado trees
B N Wolstenholme and A W Whiley

25.     Carbohydrate management in avocado trees for increased production
A W Whiley and B N Wolstenholme

28.     CO₂ assimilation of developing fruiting shoots of cv Hass avocado (Persea americana Mill) — A preliminary report
A W Whiley

31.     Results of a high density avocado planting
J S Kóhne and Sylvie Kremer-Köhne

33.     Spring vegetative flush removal: The effect on yield, size, fruit mineral composition and quality
J G M Cutting and J P Bower

35.     Field trial using paclobutrazol foliar sprays on Hass avocado trees
P R R Symons and B N Wolstenholme

37.     Booropname deur avokadoblare
P J Robbertse and L A Coetzer

38.     'n Vergelyking van die 1988-en 1989-vervoertemperature van avokado's
J J Bezuidenhout

43.     Temperature management of avocados — an integrated approach
L L Vorster, J C Toerien and J J Bezuidenhout

47.     Nutrient deficiency symptoms in potted avocado plants — A progress report
R O Barnard

49.     Effects of exchange rate variability on the production cost and profitability of avocados
J van Zyl

55.      The occurrence of soils suppressive to Phytophthora cinnamomi — A preliminary report
J A Duvenhage and Erna M C Maas

56.     Identifisering van avokadovrugletsels wat deur insekte veroorsaak word
W J du Toit and E A de Villiers

61.     The influence of N- and Ca-sources on pathogenicity of Phytophthora cinnamomi and of Ca-sources on resistance of avocado roots to infection by the fungus — A preliminary report
J A Duvenhage

63.     Evaluation of field trees for resistance to Phytophthora cinnamomi by means of the detached root technique
M de V van der Merwe, Erna M C Maas and J M Kotzé

65.     The effect of bacteria on root rot severity caused by Phytophthora cinnamomi
Erna M C Maas and J M Kotzé

67.     An improved method to evaluate avocado rootstocks for resistance to Phytophthora cinnamomi
M van der Merwe