Allium resources

AHDB Horticulture funded an extensive programme of research on many aspects of commercial allium production. The available reports and resources are listed below.

PESTS OF ALLIUM:

Research project CP 205: WP1 Bean seed fly on leek

Flies

Identification and control of bean seed fly in allium crops

Life cycle and management of the onion fly

Risk factors and crop damage caused by bean seed flies

Studentship Project CP 190: Development of an integrated strategy for Bean Seed Fly control

Research project FV 339: Leek and onion: Control of onion thrips and bean seed fly on leek and onion crops


Thrips

Control of thrips in allium and brassica crops

Basic biology and management of onion thrips on field crops

Research project FV 339: Leek and onion: Control of onion thrips and bean seed fly on leek and onion crops


Mammal pests

Managing rabbit problems associated with horticulture

Rodent control on farms


Moths

Damage caused by cutworms (noctuid moths) on field crops

Identification and symptoms caused by the leek moth


Nematodes

Identification and management of nematodes in field crops

Research project: Molecular methods for detection of stem nematode (Ditylenchus dipsaci) in soil and predicting risk of damage to onions and leeks

Research project: Improving risk assessment for free living nematodes in leeks


Slugs

Integrated slug control


Wireworms

Identification and management of wireworms in field crops




DISEASES OF ALLIUM:

Research project: Delivery of a Diagnostic test pilot scheme for Brassicas and Onions

Research project FV 461 : A literature review of novel strategies to manage viruses in UK crops


Downy mildew

Onion downy mildew risk predictor

Research project: Further development and calibration of detection tests for conidia of onion downy mildew in combination with the Morph forecast model MILIONCAST

Research project: Bulb and Salad Onion - Evaluation of an integrated disease management system to ascribe risk of downy mildew disease on commercial crops in the UK

Research project: Integrated decision support tools for management of downy mildew in onions


Fusarium

Diagnostic tests to assess Fusarium disease risk, select rotation crops and monitor microbial communities

Research project CP 116: Exploiting Next Generation Sequencing Technologies to understand Pathology and resistance in Fusarium

Research project CP 196: Developing disease prediction of onion basal rot using a quantitative molecular test

Research Project CP 204: Diagnostic tests to assess Fusarium disease risk, select rotation crops and monitor microbial communities

Research project FV 219b: Optimising field-scale control of Fusarium basal rot and white rot of onion using Trichoderma colonised composts and pellets, and biofumigant Brassica and onion residues

Research project FV 358: Pot experiment to examine the suppression of Fusarium basal rot using compost colonised with Trichoderma viride

Research project FV/POBOF 452 : Fusarium - Investigation into the control of basal rots in crops


Leek rust

Leek rust


Onion neck rot

Onion neck rot factsheet

Evaluating onion neck rot seed treatments

Research project: Determining the effectiveness of seed treatments on the occurrence of neck rot disease in onions caused by Botrytis spp.

Research project: Onion neck rot - seed infection, pathogens and treatments


White rot

Research project: Investigation into the control of White Rot in bulb and salad onion crops

Research project: Integrated Allium white rot control using composts and Trichoderma viride

Research project FV 219a: Integrated Allium white rot control using composts and Trichoderma viride

Research project FV 219b: Optimising field-scale control of Fusarium basal rot and white rot of onion using Trichoderma colonised composts and pellets, and biofumigant Brassica and onion residues


White tip

Research project: Leeks white tip control (Phytophthora porri)




OTHER TOPICS ON ALLIUM:

Strategic Centres for Field Vegetable Crops

The strategic centres delivered variety evaluation trials for brassicas, carrots, onions and vining peas. These trials provide independent performance evaluation of yield quality, shelf-life and storage potential of the four crops and provided the go to place for grower’s selection of varieties.
Additional grower-led demonstration trials for these four crops were also carried out to tackle priority practical grower questions. Crop association R&D representatives provided the steering on the topics addressed and their design.

Strategic Centre for Field Vegetables - Onions

Research project FV 462: Horticulture Strategic Centres for Field Vegetables


Research project FV 396: Leeks: Desk Study to review and assess existing research into the nutritional and health benefits


Extending the season

Research project: FV 387 Improving quality and extending the season for late UK Leeks

Research project: FV 387a Improving quality and extending the season for late UK Leeks

Research project: FV 387b Improving quality and extending the season in late leek crops in the UK


Food safety

How to keep fresh produce safe to eat

Monitoring microbial food safety of fresh produce

Video: Webinar - Disinfecting irrigation water for use on fresh produce

Video: Webinar - Microbials - Keeping it clean

Video: Webinar - Microbials - Managing risk in the production of fresh produce


Irrigation and nutrient management

Establishing a resilient water supply

Green manures – effects on soil nutrient management and soil physical and biological properties

Green manures – implications of economic and environmental benefits on rotational management

Green manures – species selection

Irrigation in bulb onions

Interpretation of allium leaf nutrient analysis

Introduction to fertigation

Protecting the water supply for your crops

Nitrogen requirements for leeks

RB209 Section 6 Vegetables and bulbs

Soil Nitrogen Supply for Field vegetables

Research project: Impact of irrigation practices on Rinjnsburger bulb onion husbandry, quality and storability

Research project: Nitrogen requirements for leeks

Research project: Quantifying over-winter nitrogen requirements of the leek crop


Labour and skills

Edible Horticulture Skills Survey

Video: Webinar - Operating in a reduced labour market

Video: Webinar - Using LEAN techniques to improve labour efficiency in horticulture

Video: Webinar - Using your time effectively


Resistance

Research project: Use of plant defence elicitors to provide induced resistance protection in Brassica, Allium and Radish crops


Seed

Vegetable seed quality, storage and handling


Soils

GREATsoils resources

How to count earthworms

Measuring soil nutrients, pH and organic matter

Short-term green manures for intensively cultivated horticultural soil

Video: How to conduct a quick assessment of your soils

Video: The worm count test

Video: Webinar - Soil Health for Horticulture

Video: Webinar - Soil health improvement – Cover crops and organic amendments


Storage

Independent assessment of field and storage potential of onion varieties 2017/18

Research project: Relationship between disease incidence in stored bulb onions and first year sets

Research project: FV 348 Independent assessment of field and storage potential of varieties

Research project: FV 348a Independent assessment of field and storage potential of onion varieties

Research project: FV 348b Independent assessment of field and storage potential of varieties

Research project: FV 348c Independent assessment of field and storage potential of varieties

Research project: FV 348d Independent assessment of field and storage potential of varieties


Varieties

Independent assessment of field and storage potential of onion varieties 2017/18

Onion variety trials


Weeds

Control of volunteer potatoes in vegetable crops


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