5 Chairman's Report
S Magagula

HORTICULTURE

6 Water use of avocado orchards – Year 4
NJ Taylor, E Mazhawu, AD Clulow and MJ Savage

18 Effect of Paclobutrazol and Potassium nitrate sprays at flowering on new shoot development, leaf nutrient element concentrations, fruit drop, solitary fruit weight and tree yield in Maluma Hass avocado
SA Oosthuyse

30 Investigation into the potential use of avocado total soluble solids content for crop estimate and orchard management purposes
FJ Kruger, GO Volschenk and E Volschenk

32 Research towards reducing the incidence of lenticel damage of South African ‘Hass’ export avocado fruit
D Lemmer, HW Viljoen and JF Fourie

PATHOLOGY

66 Avocado Sunblotch Viroid (ASBVd) symptom identification and detection in avocado orchards
AEC Jooste and ZR Zwane

72 Evaluating ammonium- and potassium phosphonate foliar sprays over two seasons based on root phosphite concentrations for the preventative management of Phytophthora root rot
A McLeod, L Moyo, JG van der Westhuyzen, P Novela, JG Modisane and P Mohale

POSTHARVEST

80 Preliminary observations on the maturation rates, taste scores as well as the shrivelling and stem-end rot incidences of Hass fruit cultivated at lower and higher altitudes in the Mooketsi area
FJ Kruger, GO Volschenk and E Volschenk