New Zealand Avocado Growers Association

 

 

 

 

 

Annual Research Report

 

 

 

2003

 

 

Volume 3

 

 

                                                             Contents                                                

 

                                                                                                                                             page                       

1. Novel chemicals to control six-spotted mite, Eotetranychus sexmaculatus.

            D. Steven…………………………………………………………………………………      1

 

2. Distribution of six-spotted mite, greenhouse thrips and brown headed leafroller in avocado orchards.

            P.A. Brookbanks and D. Steven……….………………………………………………      9

 

3. Impact of rainfall prior to harvest on ripe fruit quality of ‘Hass’ avocados in New Zealand.

H.A. Pak, J. Dixon, and J.G.M Cutting………………………………………………      22

 

4. Observations on avocado tree root systems in the Western Bay of Plenty.

J. Dixon and D.J. Sher………………………..……………………………………….      32

 

5. Research Note: Impact of spring and summer flush type on flowering intensity in ‘Hass’ avocado.

J.G.M Cutting……………………………………………………………………………     42

 

6. New Zealand avocado fruit quality: The impact of storage temperature and maturity

            J. Dixon, H.A. Pak, D.B. Smith, T.A. Elmsly and J.G.M. Cutting.………………         48

 

7. Influence of early season maturity on fruit quality in New Zealand ‘Hass’ avocados.

            H.A. Pak, J. Dixon, D.B. Smith, T.A. Elmsly and J.G.M. Cutting………………….      54

 

8. Fruit age management: The key to successful long distance export of New Zealand avocados. 

J. Dixon, H.A. Pak, A.J. Mandemaker, D.B. Smith, T.A. Elmsly and

J.G.M Cutting…………..………………………………………………………………       60

 

9. Effect of post-harvest water blasting on fruit pesticide residues.

            A.J. Mandemaker..……………………………………………………………………        66

 

10. Novel post-harvest treatments for the amelioration of rots in ‘Hass’ avocado.

N. Lallu, C.W. Yeasley, M. Punter, D. Billing, K. Francis

and P. Pikadala….……………………………………………………………………        71

 

11. The effect of ethylene treatment on fruit quality and ripening for late season Hass avocados stored up to 6 weeks.

            J.Dixon, T.A. Elmsly and D.B. Smith……………………………………………….        80

 

12. Can dynamic controlled atmosphere storage be used for ‘Hass’ avocados?

C.W. Yearsley, N. Lallu, D. Burmeister, J. Burdon and D. Billing….……………        86

 

 

 

13. Predicting avocado fruit rots by quantifying inoculum potential in the orchard before harvest.

  

K.R. Everett, J. Rees-George, S.L. Parkes and P.R. Johnston..………………        93

 

14. Quality of avocado (Persea americana Mill) fruit after high humidity storage and/or exogenous ethylene removal.

J. Dixon, D.B. Smith, T.A. Elmsly and H.A. Pak…………………………………         99

 

15. Effects of prepacking holding temperatures on shelf life of ‘Hass’ avocados. 

N. Lallu, C. Yearsley, M. Punter, D. Billing, K. Francis

and P. Pikadala……………....………………………………………………………      108