• Latest
  • Trending
Phytophthora rot in asparagus – be aware and prepare

Phytophthora rot in asparagus – be aware and prepare

October 7, 2021
Outsmarting Pests, Preserving Diversity: A Grower’s Adaptive Strategy Saves the Season

Outsmarting Pests, Preserving Diversity: A Grower’s Adaptive Strategy Saves the Season

October 8, 2025
Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

October 8, 2025
The Economics of Enchantment: Designing High-Value Agritourism Pumpkin Events

The Economics of Enchantment: Designing High-Value Agritourism Pumpkin Events

October 7, 2025
Cultivating Partnerships: How Agritourism and ESG Strategy Can Build New Markets for Farmers

Cultivating Partnerships: How Agritourism and ESG Strategy Can Build New Markets for Farmers

October 7, 2025
Strategic Subsidy to Value-Added: A Blueprint for Stabilizing Specialty Crop Income

Strategic Subsidy to Value-Added: A Blueprint for Stabilizing Specialty Crop Income

October 6, 2025
The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

October 6, 2025
The High-Value Pumpkin: Cultivating Profit Through Variety, Agritourism, and Soil Management

The High-Value Pumpkin: Cultivating Profit Through Variety, Agritourism, and Soil Management

October 5, 2025
From Research Plot to Public Event: The Supply Chain of a Specialty Crop

From Research Plot to Public Event: The Supply Chain of a Specialty Crop

October 5, 2025
Cultivating Excellence: What Makes a Pumpkin Patch the “Best in the Nation”?

Cultivating Excellence: What Makes a Pumpkin Patch the “Best in the Nation”?

October 4, 2025
Beyond the Pie: What Google Trends Data Reveals About Evolving Pumpkin Markets

Beyond the Pie: What Google Trends Data Reveals About Evolving Pumpkin Markets

October 4, 2025
Beyond the Yield: Leveraging Agritourism and Experience-Based Revenue in Modern Agriculture

Beyond the Yield: Leveraging Agritourism and Experience-Based Revenue in Modern Agriculture

October 3, 2025
Weathering the Storm: How an Amur Family Farm Masters Onion Production Against the Odds

Weathering the Storm: How an Amur Family Farm Masters Onion Production Against the Odds

October 3, 2025
  • Company
Thursday, October 9, 2025
Vegetables News
  • NEWS
    Outsmarting Pests, Preserving Diversity: A Grower’s Adaptive Strategy Saves the Season

    Outsmarting Pests, Preserving Diversity: A Grower’s Adaptive Strategy Saves the Season

    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    The Economics of Enchantment: Designing High-Value Agritourism Pumpkin Events

    The Economics of Enchantment: Designing High-Value Agritourism Pumpkin Events

    Cultivating Partnerships: How Agritourism and ESG Strategy Can Build New Markets for Farmers

    Cultivating Partnerships: How Agritourism and ESG Strategy Can Build New Markets for Farmers

    Strategic Subsidy to Value-Added: A Blueprint for Stabilizing Specialty Crop Income

    Strategic Subsidy to Value-Added: A Blueprint for Stabilizing Specialty Crop Income

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The High-Value Pumpkin: Cultivating Profit Through Variety, Agritourism, and Soil Management

    The High-Value Pumpkin: Cultivating Profit Through Variety, Agritourism, and Soil Management

    From Research Plot to Public Event: The Supply Chain of a Specialty Crop

    From Research Plot to Public Event: The Supply Chain of a Specialty Crop

    Cultivating Excellence: What Makes a Pumpkin Patch the “Best in the Nation”?

    Cultivating Excellence: What Makes a Pumpkin Patch the “Best in the Nation”?

  • AGROTECHNOLOGY
    • All
    • Climate
    • Crop protection
    • digital (smart)
    • dron
    • Fertilizer
    • Research
    • weed
    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The Water Spinach Specialist: A Blueprint for High-Value Specialty Crops and Cooperative Success

    The Water Spinach Specialist: A Blueprint for High-Value Specialty Crops and Cooperative Success

    Weathering the Storm: How Vietnamese Farmers and Traders Collaborate to Stabilize the Greens Market

    Weathering the Storm: How Vietnamese Farmers and Traders Collaborate to Stabilize the Greens Market

    Stavropol’s Borscht Belt: High-Yield Vegetable Harvest Reaches One-Third Completion

    Stavropol’s Borscht Belt: High-Yield Vegetable Harvest Reaches One-Third Completion

    Yakutia Defies the Odds: Harvest Data Reveals a Surge in Arctic Agriculture

    Yakutia Defies the Odds: Harvest Data Reveals a Surge in Arctic Agriculture

    Beyond the Subsidy: Unlocking True Productivity Gains in Ugandan Agriculture

    Beyond the Subsidy: Unlocking True Productivity Gains in Ugandan Agriculture

    A Double-Edged Sword: Soaring Chinese Cabbage Imports into Zabaykalsky Bring Heightened Biosecurity Risks

    A Double-Edged Sword: Soaring Chinese Cabbage Imports into Zabaykalsky Bring Heightened Biosecurity Risks

    Beyond the Field: How Cooperative-Led Education is Revolutionizing Garlic and Onion Production

    Beyond the Field: How Cooperative-Led Education is Revolutionizing Garlic and Onion Production

  • IRRIGATION
  • SEED PRODUCTION
    • Vegetables
    • Fruit
  • PROCESSING
No Result
View All Result
  • NEWS
    Outsmarting Pests, Preserving Diversity: A Grower’s Adaptive Strategy Saves the Season

    Outsmarting Pests, Preserving Diversity: A Grower’s Adaptive Strategy Saves the Season

    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    The Economics of Enchantment: Designing High-Value Agritourism Pumpkin Events

    The Economics of Enchantment: Designing High-Value Agritourism Pumpkin Events

    Cultivating Partnerships: How Agritourism and ESG Strategy Can Build New Markets for Farmers

    Cultivating Partnerships: How Agritourism and ESG Strategy Can Build New Markets for Farmers

    Strategic Subsidy to Value-Added: A Blueprint for Stabilizing Specialty Crop Income

    Strategic Subsidy to Value-Added: A Blueprint for Stabilizing Specialty Crop Income

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The High-Value Pumpkin: Cultivating Profit Through Variety, Agritourism, and Soil Management

    The High-Value Pumpkin: Cultivating Profit Through Variety, Agritourism, and Soil Management

    From Research Plot to Public Event: The Supply Chain of a Specialty Crop

    From Research Plot to Public Event: The Supply Chain of a Specialty Crop

    Cultivating Excellence: What Makes a Pumpkin Patch the “Best in the Nation”?

    Cultivating Excellence: What Makes a Pumpkin Patch the “Best in the Nation”?

  • AGROTECHNOLOGY
    • All
    • Climate
    • Crop protection
    • digital (smart)
    • dron
    • Fertilizer
    • Research
    • weed
    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    Sowing Certainty, Reaping Risk: The High Stakes of Seed Integrity and Genetic Purity

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The Double Blow: Analyzing the Systemic Risks Behind a Pumpkin Crop Collapse

    The Water Spinach Specialist: A Blueprint for High-Value Specialty Crops and Cooperative Success

    The Water Spinach Specialist: A Blueprint for High-Value Specialty Crops and Cooperative Success

    Weathering the Storm: How Vietnamese Farmers and Traders Collaborate to Stabilize the Greens Market

    Weathering the Storm: How Vietnamese Farmers and Traders Collaborate to Stabilize the Greens Market

    Stavropol’s Borscht Belt: High-Yield Vegetable Harvest Reaches One-Third Completion

    Stavropol’s Borscht Belt: High-Yield Vegetable Harvest Reaches One-Third Completion

    Yakutia Defies the Odds: Harvest Data Reveals a Surge in Arctic Agriculture

    Yakutia Defies the Odds: Harvest Data Reveals a Surge in Arctic Agriculture

    Beyond the Subsidy: Unlocking True Productivity Gains in Ugandan Agriculture

    Beyond the Subsidy: Unlocking True Productivity Gains in Ugandan Agriculture

    A Double-Edged Sword: Soaring Chinese Cabbage Imports into Zabaykalsky Bring Heightened Biosecurity Risks

    A Double-Edged Sword: Soaring Chinese Cabbage Imports into Zabaykalsky Bring Heightened Biosecurity Risks

    Beyond the Field: How Cooperative-Led Education is Revolutionizing Garlic and Onion Production

    Beyond the Field: How Cooperative-Led Education is Revolutionizing Garlic and Onion Production

  • IRRIGATION
  • SEED PRODUCTION
    • Vegetables
    • Fruit
  • PROCESSING
No Result
View All Result
Vegetables News
Home AGROTECHNOLOGY

Phytophthora rot in asparagus – be aware and prepare

by Viktor Kovalev
October 7, 2021
in AGROTECHNOLOGY
0
Phytophthora rot in asparagus – be aware and prepare
With the UK asparagus season fast approaching, Kim Parker explains how visible symptoms of phytophthora rot are the ‘tip of the iceberg’ and summarises strategies for prevention and control.

For some asparagus growers, phytophthora rot is a familiar ‘foe.’ Other growers first encountered this devastating disease in 2020, following a mild wet autumn and saturated soils in February.

What are the symptoms of phytophthora rot in asparagus?

The most obvious symptoms of asparagus phytophthora at harvest are lesions at the spear base. These result in spear twisting or a characteristic ‘crooked’ appearance, followed by collapse or shrivelling. Often, however, the only indication of a problem is fewer spears emerging, thin spears, or increasingly poor plant stands.

The progress of phytophthora becomes more obvious once you dig down to the roots and crown. Infected roots first appear water-soaked, then later brown and rotted. Infected crowns have softened internal tissues.

Damage provides entry points for other pathogens such as Fusarium species. As a result, there can be a long-term damaging effect on spear and fern production and yields in the following seasons.Back to: Integrated pest management (IPM)

How does the phytophthora rot pathogen survive?

The pathogen can survive in crowns for planting and as long-lived ‘oospores’ in the soil. Swimming spores are released from pathogen structures in crown tissue and oospores in soil, leading to infection of roots and emerging spears.

The optimum temperatures for infection are 10–12oC. Severe attacks are associated with wet conditions and poor drainage.

How do I manage phytophthora rot in asparagus crops?

Prevent

Phytophthora is difficult to eliminate once it is present in a field, so prevention is the best strategy:

  • Avoid new plantings where there is a history of root rot on a previous crop

This can indicate that soil conditions may be conducive for development of phytophthora rots.

  • Ensure that soil is well-drained and not prone to waterlogging

If there is poor drainage in a mature crop, take action to remedy the problem.

  • Check with crown suppliers that propagation areas are free from phytophthora rots

Note that there is currently no diagnostic test used commercially to check for phytophthora in crowns.

  • Crown planting should be done under dry, warm conditions

This should minimise the risk of phytophthora infection.

  • Consider zero tillage

Cultivation practices such as annual ridging and sub-soiling can cause root damage and entry points for infection by the pathogen. Results from our research have led to new thinking on the potential benefits of zero tillage.Understanding asparagus root growth patterns: watch the video & read the factsheet


Control

SL 567A (metalaxyl-M) is the only fungicide currently approved for phytophthora rot management on asparagus and has to be applied before spears emerge.

SL 567A is most effective when applied to moist soils and then ‘washed’ into the soil with an advancing front of water from rain. The product should not be applied to saturated soils as it can be easily removed by surface drainage.

As the industry relies on a single active substance, metalaxyl-M, we are concerned about the risk of resistance. There is also the possibility of reduced efficacy because of microbial degradation in the soil. We are, therefore, working with industry to explore other fungicide options.An indepth look at phytophthora rot in asparagus – symptoms & management optionsCrop Walkers’ Guide: Asparagus – identify key pests & diseasesSustainable control methods for asparagus beetleSCEPTREplus trial results for asparagus crops

Kim Parker has worked in UK horticulture since 2000. She has been a Crop Protection Scientist (Diseases) at AHDB for over four years, focusing on field vegetables and protected edibles and previously worked as a plant pathologist for ADAS

Tags: asparagusPhytophthora
Previous Post

Funds for ‘climate smart’ farming added to California budget

Next Post

Agritechnica 2022: The world’s leading trade fair for agricultural machinery with an attractive exhibitor offering and technical program

Next Post
Agritechnica 2022: The world’s leading trade fair for agricultural machinery with an attractive exhibitor offering and technical program

Agritechnica 2022: The world's leading trade fair for agricultural machinery with an attractive exhibitor offering and technical program

Leave a Reply

Your email address will not be published. Required fields are marked *

  • Home
  • Privacy Policy
  • Privacy Policy of vegetables.news app

© 2020-2024 VEGETABLES NEWS

No Result
View All Result
  • NEWS
  • AGROTECHNOLOGY
  • IRRIGATION
  • SEED PRODUCTION
    • Vegetables
    • Fruit
  • PROCESSING

© 2020-2024 VEGETABLES NEWS