New Zealand Avocado Growers Association

 

 

 

 

 

Annual Research Report

 

 

 

2001

 

 

Volume 1

 

 

Editor:    Dr. H.A. Pak

Avocado Industry Council Ltd

PO Box 16004

Bethlehem, Tauranga

New Zealand

 

Published by:

Avocado Growers Association

PO Box 16004

Bethlehem, Tauranga

NEW ZEALAND

 

Tel:  (07) 571 6147

Fax: (07) 571 6145

 

 

Copyright                                                                               ISBN:
                                                             Contents                                                

 

                                                                                                                                             page                       

1. Foreward

            J. Cutting…………………………………………………………………………………      1

 

2. Comparative toxicity of pesticides to the sixspotted mite Eotetranychus sexmaculatus (Riley) (Acri:Tetranychidae) on avocados

P. S. Stevens, L.E, Jamieson and J.Cave……………………………………………     2

 

3.  Orchard survey: effect of pre-harvest factors on post-harvest rots

K.R. Everett and H.A. Pak……………………………………………………………..      9

 

4. The role of surface ridging and protuberances on avocado fruit in the development of ripe rots.

H.A. Pak, D. Bettesworth and H.M. Dawes………………………………………….     18

 

5. Symptoms of controlled atmosphere damage in avocados.

C. Yearsley and N. Lallu ………………………………………………………………     22

 

6. Ripe fruit quality of early season fruit and factors influencing maturity.

            H.A. Pak and H.M. Dawes……………………………………………………………       27

 

7. Development of fruit quality disorders in New Zealand avocados at out-turn in the USA for the 2000-2001 and 2001-2002 seasons

            J. Dixon………………………………………………………………………………….      34

 

 8. Post-harvest ozone treatment for the control of ripe rots in avocado. 

H.A. Pak and J. Dixon…………………………………………………………………      46

 

9. Stem-end rots: infection of ripening fruit

            K.R. Everett……………………………………………………………………………        50

 

10. Morphological changes in lenticel structure resulting from imbibition and susceptiblity to handling damage

K. Everett, I. Hallett and C. Yeasley, N. Lallu, J. Rees-George

and H.A. Pak …………………………………………………………………………        59

 

11. Pattern of disease development in late season fruit.

            H.A. Pak……………………………………………………………………………….        62

 

12. Field testing insecticides for control of greenhouse thrips in avocados.

            P.S. Stevens, D. Allan, P. Allison and L. Jamieson………………………………        66

 

13. Monitoring rates of early season dry matter accumulation

            H.A. Pak………………………………………………………………………………         70