Potato Review Group

Contents

Choice of chemical

Time of application

Method of application

Biostimulant seed treatments

Further information:

Seed treatment notes

Top of page

 

Choice of chemical

The table below provides a summary of seed treatments currently available.

See the manufacturers’ websites for details of agrochemical use.

IMPORTANT INFORMATION: the expiry date for penflufen is 30/06/2021.

Seed treatments summary

Top of page

 

Time of application

  1. Products for control of storage diseases (imazalil, thiabendazole) are applied as seed tubers are loaded into store or at grading during storage.
  2. Fludioxonil is applied prior to planting but must be applied before eyes start to open.
  3. On-planter, hopper and in-furrow applications are made at planting.
  4. There is concern that damage may result from application of seed treatments and there are some manufacturer’s restrictions to time of application in relation to time of planting – always check the product guide and label before use.
  5. See the manufacturers’ websites for details of application times.

Top of page

 

Method of application

  1. Application of seed treatments is generally poorly researched.
  2. All methods of application are very variable and spray or hopper applications may result in 5% to 80% of the target dose being recovered from the surface of treated tubers. More … (applications section)
  3. Spray application of seed treatment over a roller table can result in poor coverage of seed if the tubers fail to turn fully; specialised equipment is therefore required for efficient application. More …
  4. There is concern that damage may occur during application of seed treatments and the manufacturer’s recommendations should be checked carefully, including with reference to application timing.
  5. The risk damage may be lower for powder or on-planter application of a seed treatment, compared with that applied over a roller table.
  6. In-furrow applications should aim to apply products to soil around the seed tuber, rather than directly onto the seed tuber. More …
  7. If seed is of poor quality or is damaged, including damage to sprouts, there may be detrimental effects of seed treatments, particularly if conditions at planting are poor.

Top of page

Biostimulant seed treatments

  1. Biostimulant or biological seed treatments have been investigated in experiments.
  2. Some of these have a potential to reduce risk of disease infection by improving plant health or resistance responses.
  3. Bacillus spp may influence
    • nutrition
    • biostimulation
    • plant health
    • may be applied to seed and / or soil
  4. Endophytes may influence
    • nutrition
    • biostimulation
    • plant health
  5. Phosphites may influence
    • biostimulation
    • plant health

More …

Top of page

 

Further information

See the manufacturers’ websites for details of agrochemical use.

 

Seed treatment notes

Applications to seed and soil 2020 (Includes fungicidal and other seed treatments)

New developments in agrochemicals 2019 (Includes in-furrow and seed applied treatments)

Transmission of seed borne diseases 2018 (Methods of applying seed treatments)

Seed treatments 2017 (includes “Allstar” / “Xemium”; sedaxane + fludioxonil)

Nutrient experiments in 2016 – analysed in 2017 (Includes experiments with “Allstar” / “Xemium”)

Seed treatments under development 2016 (Experiments with the new product “Xemium” – now called “Allstar”)

Seed treatments 2013 (Applications made to seed and to soil)

Tuber blemishing diseases 2012 (Includes experiments with antagonistic bacteria and fungi and with penflufen)

Seed treatment 2010 (Use of fludioxonil)

Seed treatments 2009 (Fludioxonil and flutolanil experiment results)

Seed tuber applications 2009 (Effects of hormone and nutrient applications to seed)

Recent research on diseases 2008 (Introduction to fludioxonil and flutolanil seed treatments)

Tuber blemishing diseases 2006 (Includes seed and soil treatments)

Seed treatment applications 2001 (Variability in application of seed treatments; agrochemical information has been superseded)

Seed treatment updates 2001 (Agrochemical information which has been superseded)

Seed treatments 1999 (Methods of application of seed treatments)

Seed treatments 1997 (Some information on prevalence of seed borne diseases; agrochemical information has been superseded)

Notes for 1993 (Chapter 14: Seed treatments; in what situations are seed treatments required?)

Seminar 3 Notes 1992 (Chapter 4: Seed treatment; first indication of risk of multiple applications)

To be completed.

Top of page