South African Avocado Growers’ Association

Research Report for 1979

Volume 3

Table of Contents

 

 

3.       Voorwoord
Dr J H Grobler

          News/Nuus

4.       Prof. Dr. George A Zentmyer visits SAAGA

4.       Dr. Lindsey Milne goes to Westfalia

5.       Peter Hughes is leaving the Avocado Industry

5.       Groot uitvoerders staan saam

6.       Dr E Lahav van Israel besoek Suid-Afrika

7.       Report on Phytophthora root rot of avocado in South Africa
G A Zentmyer

11.     Die avokadobedryf in Suid-Afrika — 'n Evaluasie en toekomsblik
F J Lourens

14.     Phases of seasonal growth of the Avocado tree
J M Kotzé

17.     Prospects for integrated and biological control of avocado root rot — some overseas impressions
B N Wolstenholme

21.     Control of Phytophthora root rot on young replanted avocado trees
J M Darvas, J C Toerien & J M Kotzé

23.     Chemical control of Phytophthora root rot on fully grown avocado trees
J M Darvas, J C Toerien & J M Kotzé

25.     Water relations of Phytophthora infected Fuerte avocado trees and their influence on management
J P Bower

29.     Lupine bait technique for the semi-quantitative analysis of Phytophthora cinnamomi and other root pathogens in avocado soils
J M Darvas

31.     Ecology of avocado root pathogens
J M Darvas

33.     Verslag oor avokadobemestingsnavorsing
W Langenegger & T J Koen

35.     Avocado soil moisture studies
A W G Rowell

38.     Cercospora spot of avocados
J M Darvas & J M Kotzé

41.     Stem-end rot and other post-harvest diseases
J M Darvas & J M Kotzé

45.     Control of Anthracnose of avocados: Techniques to evaluate fungicides (Progress Report)
J M Kotzé & E Kuschke

47.     Sooty blotch of avocados
J M Kotzé & E M Theron

49.     Seasonal incidence of ring-neck on avocados and possible causes
J C Toerien

52.     The identification of causes of typical surface lesions on avocado fruit
W J Du Toit, E A De Villiers & A Tuffin

54.     An investigation into the causes of Carapace spot (Progress Report)
A W G Rowell, D Gautler, P Van Dijk & B J Durand

56.     Vrugtemperatuurstudie tydens pluk en verpakking
M J Slabbert & J C Toerien

59.     Thinning of an avocado orchard (Progress Report)
J C Toerien & A M Basson

61.     Successful grafting of avocados after the commencement of flower bud differentiation (Progress Report)
J C Toerien

63.     Effect of ringbarking and IBA on rooting of etiolated Duke seedlings (Progress Report)
J C Toerien

64.     Treatment of avocado graftwood with anti transpirant prior to grafting (Progress Report)
J C Toerien & M J Slabbert

65.     Avocado sunblotch research report
J V Da Graca

67.     Ultrastrukturele veranderings by Pulpvlek van avokadovrugte (Vorderingsverslag)
A H P Engelbrecht

70.     'n Metode vir die bepaling van rypheid by avokado's
D H Swarts

74.     Seasonal changes in the composition of avocado oil recovered by centrifugation
L M Du Plessis