• Our Research
    • Research Strategy
    • Research Sites
    • Current Research Projects
    • Research Results
    • Research Collaborations
    • Research Resources
    • Seed Industry Research Centre
    Current Research
    Current Research
    Research Results
    Research Results
  • Resources
    • Biosecurity
    • Crop Action
    • Nutrient Management
    • Maize
    • Templates and Calculators
    • Podcast
    • Cereals
    • Weeds
    • Pests
    • Seeds
    • Diseases
    • News
    • Environment
    • Schools
    Podcast
    Podcast
    Environment and Compliance
    Environment and Compliance
  • Levies & Returns
    • Arable Crops Levy
    • Maize Levy
    • Cereal Silage Levy
    • Farmer Annual Return Form
    • Wholesaler Annual Return Form
    Levies
    Levies
    Annual Returns
    Annual Returns
  • Events
  • News
  • About Us
    • Governance and growers
    • Business Strategy
    • Our People
    • Careers
    • Growers Leading Change
    • Women in Arable
    • Arable Ys
    • Arable Kids
    • Arable Research Groups (ARGs)
    Our People
    Our People
    Growers Leading Change
    Growers Leading Change
  • Ask FAR AI
  • Weather
  • Log In
Ask FAR AI
Weather
Log In
  • Homepage
  • Resources
  • Vs 4 White Blister Of Radish Seed Crops

VS4 White blister of radish seed crops

Feature placeholder

Key points

  • This Arable Update reports on three trials set up in 2016/17 to better understand the development and spread of white blister of radish seed crops.
  • Ridomil Gold® MZ WG remains active against white blister and forms the base for an effective control programme, with useful additions from Pristine®, Amistar® and Seguris Flexi®.
  • It was possible to detect the presence of white blister oospores in most seed lines.
  • In a pot trial, disease development and severity did not appear to be influenced by oospore loading on the seed surface and all lines became infected.
  • White blister may infect the internal seed structures and act like an endophyte. Therefore the disease is seedborne, infecting the seedling plants when conditions are suitable.
  • It is important not to rely on one fungicide group (e.g. Ridimol) as this could increase the risk of resistance developing.
  • Increased white blister disease control was strongly related to increased seed yield.

Click here to read full pdf

Related Resources

22 May 2025

FAR Focus 16: Cocksfoot Seed Production

This FAR Focus outlines the key practices required to grow cocksfoot seed crops, covering topics such as crop establishment, nutrient requirements, crop management and harvesting. Topics outside the scope of this booklet include emissions profiles and off-farm considerations such as seed cleaning etc.

Read more
22 May 2025

Autumn round up booklet 2025

Read the booklet for the 2025 autumn round up series here. 

Read more
22 May 2025

H78 Managing white clover desiccation in challenging seasons

This update outlines the results of five years of trials exploring pre-desiccant options for managing bulky white clover crops, aiming to reduce rapid leaf regrowth following diquat desiccation under wet or high-fertility conditions. Achieving effective desiccation required balancing this process with post-harvest regrowth, as clover seed crops are often used for lamb grazing on New Zealand cropping farms.

Read more
22 May 2025

North Island cereals and seed management field day booklet

Missed the 2024 North Island cereals and seed management field days, catch up on the booklet here. 

Read more
22 May 2025

Late spring cereals and seed management field day booklet

Check out the booklet for the 2024 late spring cereals and seed field days.

Read more
22 May 2025

Cereal 220: Important diseases of wheat in New Zealand

This update provides information on Septoria tritici blotch, stripe and leaf rusts, powdery mildew, Seedling blight, foot and crown rot, ear blight, common eyespot and sharp eyespot.

Read more
22 May 2025

Oilseed O1: Oil seed rape management

Pure Oil NZ and FAR are collaborating to monitor oilseed rape (OSR) paddocks to identify strategies to improve yields. Their work has identified that many growers could reduce the amount of nitrogen applied to OSR crops without impacting on yield or profit.

Read more
22 May 2025

Spring field events booklet

Read the booklet from our September 2024 spring field events here. 

Read more
22 May 2025

Spring ryegrass management

This handout covers herbicide resistance management, PGRs, nitrogen and disease management.

Read more
22 May 2025

Making good irrigation decisions / value of soil moisture monitoring

Moisture probes are a valuable tool for managing the timing and application rate of irrigation, particularly for determining when to start and finish the irrigation season or following rainfall and for when drought intensities increase at unexpected rates. Read more below.

Read more

Ask FAR AI

Discover the power of AI with Ask FAR. Our new intelligent tool provides instant, accurate answers to your questions by searching the vast resources on the FAR website and linking you to the original document for further information. It’s fast, easy and reliable.

Start Chatting
  • Research
  • Levies and Returns
  • Resources
  • Events
  • News
  • Contact Us
  • Schools
  • About Us
  • Privacy Policy
  • Terms of use

©2022 Foundation for Arable Research