SA04SEQ-02: Pest management

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Research Site / Demonstration Number: SA04SEQ-02

Grower Collaborator: Pinata Farms – Wamuran

Location 2: Pates Road, Wamuran

Initiation Date: December 2018


OUTLINE: To compare and evaluate current and new fumigation products and their application in pineapple production targeting improvements in plant and ratoon crop yield in 73/50, pest efficacy and cost efficiencies.


OBJECTIVES:

  • To improve the methodology of applying fumigation to pineapple fields.
  • To compare current and new fumigation products for yield improvements, pest efficacy and cost.
  • To undertake a cost analysis of the different fumigation products.
  • To increase yield in plant crop but mainly ratoon crops in 73/50 hybrid.
  • To identify efficacy of fumigation to the full range of soil bourne pineapple pests.

SITE HISTORY AND OVERVIEW:

The research trial has been undertaken in co-operation with Pinata Farms – South East Queensland.  The location of the trial site is Pates Road, Wamuran.  The trial site has followed a previous crop of 73/50 hybrid which was taken to a single crop due to poor health and performance.  The crop harvested below industry standards in Spring 2018 with major issues of phytophthora root rot, nematode, black beetle / white grub and natural flowering.


METHODOLOGY:

Application of treatments were undertaken under supervision of R and R Fumigation Services in March 2019.  Treatments were applied at full and half rates to allow an economic analysis (including yield) vs efficacy comparison.  An economic analysis was undertaken due to the high cost of fumigation and associated risk of efficacy.  The cost of fumigation can range from $1,800 – $3,500 / hectare depending type of fumigant.

 

Trial location prior to application / soil opened up with plough to assist drying out.

The soil was prepared to standard industry conditions with good soil tilth, no crop residue and a soil pH of 4.3.  The site received over 20mm rainfall leading into application creating good soil moisture.  Weather leading up to application was moderate temperatures ranging from 20 – 30 degrees Celsius.

Application was undertaken outside normal industry application standards due to the lack of correctly set up fumigation rigs and resultant poor ground coverage. As a result, application was undertaken with a modified fumigation rig with 7 tines spaced at 30cm and each tine consisting a duel outlet.  Application depth was 40cms.  The soil was then sealed with a tyre roller with following up rainfall that night.

 

Modified Fumigation Rig

Modified Fumigator with twin outlets per tine


TREATMENTS:

A complete spectrum of fumigants were applied including more main stream products used in the industry i.e. Metham Sodium, Rural Telone and Tri Form C35 (Telone C35).  Other fumigants applied were Tri Form 60 (Telone C60) and Pic Plus. The assumptions for efficacy are as follows:

Treatments and site map are as follows:


ASSESSMENT / EVALUATION METHOD AND DELIVERY SCHEDULE:

  • Nematode assessment: Pre-plant, 3, 6, 9, 12, 24 30, 36 and 48 months
  • Pest and disease assessment: Pre-plant, 3, 6, 9, 12, 24 30, 36 and 48 months
  • Crop growth assessment: Pre-plant, 3, 6, 9, 12, 24 30, 36 and 48 months
  • Yield assessment: Plant and ratoon harvest: 24 and 48 months
  • Cost analysis: 48 months

PROGRESS REPORT:

Current Progress: Site has been selected, land prepared, pre-plant applied, hilled and planted.  All treatments have been applied.

Issues Encountered: There was extreme difficulty finding a correctly set up fumigation rig. The grower did major changes on his own rig to meet the fumigation application requirements.

Other Notes: Grower spent approximately $4,000 on modifications to fumigation rig to complete the trial.  Further extension work is required to update industry standards for fumigation rigs.