Horticulture

10 November 2022

Measuring electrical conductivity is a useful method of monitoring the level of nutrients in irrigation water, growing media and liquid feed stocks. This guidance is aimed at helping with decision making for feed application in bedding crops.

8 June 2022

This factsheet describes the main leafhopper species damaging protected herbs, identifies a potential new leafhopper egg parasitoid and provides guidance on the control of whitefly with the parasitoid Encarsia formosa. The efficacy of currently available IPM-compatible pesticides against both whiteflies and leafhoppers on protected herbs is discussed.

7 October 2022

Varieties of vining pea including PGRO descriptive lists. The tables in this guide describe briefly the yield and characteristics of varieties evaluated over recent years with details of other varieties available on request. 

22 April 2022

This review includes information relating to the impacts of different irrigation application methods on yield and water use in salad (lettuce) production, including pressurised overhead irrigation (e.g. sprinklers, centre pivot), localised micro-irrigation (drip or trickle) and gravity fed surface (furrow) irrigation.

This factsheet provides results of nitrogen response experiments focusing on baby leaf lettuce (Lactuca sativa).

15 July 2022

Neck rot can be a major source of losses in stored bulb onions in the UK. The extent of losses is variable. This factsheet draws together recent results from several AHDB H projects, together with historical information from the UK and the worldwide scientific literature.

7 September 2020

Brassica crops can be infested by up to 49 different species of pest insect. Fortunately, most of these occur infrequently on horticultural Brassicas. They include flies, beetles, caterpillars, aphids and whiteflies. Pests can reduce yield and crop quality through direct feeding damage, transmission of plant viruses and contamination

7 October 2022

This factsheet describes current knowledge and the latest developments in the area of viruses in carrots.

25 May 2022

This factsheet provides a summary of the performance of commercially available autumn and winter cauliflower and spring green varieties.

21 June 2022

This factsheet is about Sclerotinia, a disease caused by the fungus Sclerotinia sclerotiorum, is a recurring problem in the UK. The disease has a host range of more than 400 plant species, including many vegetable and arable crops such as carrots, lettuce, green beans, vining peas, potatoes and oilseed rape.

21 June 2022

Following reports of poor control of chocolate spot in broad beans, with associated yield losses, research was carried out to determine the best treatment options for growers. Work has subsequently been undertaken to determine the best timing of product use for chocolate spot control.

7 October 2022

Turnip yellows virus (TuYV), is spread by aphids, mostly the peach–potato aphid (Myzus persicae). The virus can dramatically reduce yields, especially when plants are infected early in the growing season. It is well established in Europe, and is especially common in areas of intensive brassica production in UK.