South African Avocado Growers’ Association

1995 Yearbook

Volume 18

Table of Contents

 

v         Foreword
C J Partridge

vii       Voorsittersverslag/Chairman's Report 1994/1995
A A Ernst

1.       Breeding Strategy and the Selection of Seed Parents in the ITSC Avocado Breeding Programme
Z Bijzet and B Cilliers

4.       Vorderingsverslag: Seleksie van Phytophthora-bestande Avokado-onderstamme — 1992 tot 1994
H J Breedt, P J J Koekemoer and Z Bijzet

7.       Progress with the Phase-II Avocado Evaluation Programme and its Value to the Industry
A D Sippel, B Snijder and Z Bijzet

10.     Progress with Rootstock Research at Merensky Technological Services
D J Roe, W Conradie and J S Köhne

12.     Influence of Surface Applied Lime and Gypsum on Subsoil Acidity, Extractable Ca and Nutrient Accumulation in Avocado (Persea americana Mill.)
T S Fouché and N du Sautoy

17.     Effect of Pollen Parent on Pollen Tube Growth in Hass Avocado
P J Robbertse and L A Coetzer, M F Smith and W Conradie

20.     Progress Report on Plant Pathology Research at Merensky Technological Services
J A Duvenhage and J S Köhne

23.     An Overview of the Avocado Industry in South Africa
J L van Zyl and S G Ferreira

32.     Evaluation of Trichoderma for Biological Control of Avocado Root Rot in Bark Medium Artificially Infested with Phytophthora cinnamomi
A McLeod, N Labuschagne and J M Kotzé

38.     Citrus Waste Compost for Control of Root-infecting Phytophthora Species
I Van Heerden, F C Wehner and J M Kotzé

41.     Efficacy of Dimethomorph against Phytophthora Root Rot of Avocado
J A Duvenhage and J S Köhne

43.     Die Bladspringer/Stinkbesie Vraagstuk by Avokado's:'n Antwoord?
I J Bruwer and N Claasens

47.     Principles Involved in Tree Management of Higher Density Avocado Orchards
P J C Stassen, S J Davie and B Snijder

51.     Girdling Avocado Trees for Improved Production
S J Davie, P J C Stassen, M van der Walt and B Snijder

54.     Increasing Yield of Young Hass Avocado Trees using the Cincturing Technique
C R Hackney, M Boshoff and M J Slabbert

56.     Strategies for Renewal of Unproductive Older Avocado Orchards with Severe Encroachment Problems
B Snijder and P J C Stassen

59.     Approaches to Solving the Hass Small Fruit Problem: Progress Report
S Kremer-Köhne and J S Köhne

61.     Progress Report on Pruning Hass Avocado Trees to Hedgerows
J S Köhne and D J Roe

62.     Effect of Mulching on Hass Avocado Fruit Growth and Yield in the Kwazulu/Natal Midlands
C Moore-Gordon, B N Wolstenholme and J Levin

66.     Picking Hass Avocados without Pedicel
J S Köhne and S Kremer-Köhne

67.     A Preliminary Study on Variation in the Maturity Parameters of Avocados from the Kiepersol/Hazyview Area
F J Kruger, P J C Stassen and B Snijder

74.     Maturity Standards for Fuerte Fruit in the Kwazulu/Natal Midlands
C Kaiser, J Levin and B N Wolstenholme

77.     Manipulation of Fruit Set Period of the Pinkerton Avocado and its Effect on Fruit and Tree Characteristics
A D Sippel, M A Holmes and N J F Claassens

80.     Post-harvest Heat Treatments with a view to Reducing Chilling Injury in Fuerte Avocado Fruit
D J Donkin and B N Wolstenholme

85.     Modified Atmosphere Shock Treatment and an Orchard Mulching Trial for Improving Fuerte Fruit Quality
M E Allwood and B N Wolstenholme

89.     "Stepped Down" Storage Temperature Regimes for Fuerte Fruit Grown in the Kwazulu/Natal Midlands: Do they Reduce the Incidence of Physiological Disorders?
D J Donkin, C C Mans, M J Slabbert, J Levin and B N Wolstenholme

94.     Simulated Shipping of the Avocado Cultivars Gwen and Pinkerton at Different Temperature Regimes
D J Roe

96.     Effect of Detergent Sanitizers on Post-harvest Diseases of Avocado
M Boshoff, M J Slabbert and L Korsten

99.     Distal-end Browning ('Bolverkleuring') of Fuerte Fruit in the Kwazulu/Natal Midlands
C Kaiser, M Boshoff, C C Mans, D J Donkin and M J Slabbert

102.    Maturity and Storage Temperature Regimes for KwaZulu/Natal Avocados
C C Mans, D J Donkin and M Boshoff

106.    Factors Affecting the Quality of Fuerte Avocados — 1994 Season
J J Bezuidenhout, G J Eksteen, J Hardy, B Henning and M J Slabbert

111.    Handling Guidelines for Avocado — 1995 Season
G J Eksteen

114.    Status of Research on Biological Control of Avocado Pre-and Post-harvest Diseases: An Overview
L Korsten

118.    Evaluering van Biologiese Beheer in Europa en die VSA — 1994
J J Bezuidenhout

121.    The Importance of Monitoring Antagonists Survival for Efficient Biocontrol
E Towsen, S van Wyngaardt, J A Verschoor and L Korsten

124.    Mode of Action of Bacillus subtilis for the Control of Avocado Post-harvest Pathogens
L Korsten and E E De Jager