27 March 2015 | Online since 2003



Pulse Crop Update - 2nd May 2014


Insect pests

Pea aphid


Pea aphids are present at low levels in pea and bean crops following a mild winter and spring. Several aphid-transmitted viruses are associated with infested crops, affecting both yield and quality, especially if aphids are present before flowering. Virus symptoms may not be apparent until the onset of flowering - and control of early aphids is essential to prevent virus transmission. Products containing pirimicarb (field beans, combining and vining peas, green beans) or thiacloprid (combining and vining peas) will give good control of aphids.

Pea and bean weevil

Pea and bean weevil activity continues to be high and continuous due to the warm, dry weather. High levels of damage are being recorded in all pea and bean crops, and emerging spring crops are at high risk. Sprays should be applied as soon as leaf-notching is seen. There are a number of pyrethroid products available for use in peas and beans for weevil control, and a second application will be necessary 10 to 14 days after the first, where damage is severe.

Field thrips

Field thrips Damage also remains high and products used for weevil control will control thrips. Symptoms include yellow translucent spots on the leaf surface and puckered, leathery leaves. In most cases, crops should grow away from damage if weather remains warm.

Bean bruchid

Bruchids are present in crops, although winter and spring beans are not yet at the correct growth stage for spray applications. Winter beans are at the first flower growth stage and may be setting pods in the next week or two. Crops should be sprayed when temperature has reached 20°C for two consecutive days and when crops have set first pods (when 50% pods on the bottom trusses are 2cm long).

Diseases ...

Ascochyta fabae (leaf and pod spot) in field beans


Ascochyta fabae (leaf and pod spot) has been observed in some crops of winter beans. The first sign of infection appears as small, discrete lesions on the leaves of newly emerged beans. The lesions are greyish-brown, circular to oval in shape and often develop a lighter grey centre. Lesions may follow the leaf veins. There may be small, dark pin-point sized pycnidia in the centre of the lesion.

The disease can be spread by rain-splashed spores over the surface of the plant and to surrounding plants. Harvested seed may be blemished and infected with the disease, causing it to be unsuitable for use for human consumption or as seed. Products containing azoxystrobin can be useful in reducing both foliar infection and seed infection in the harvested produce.

Downy Mildew in beans

Winter beans are developing medium levels of downy mildew as conditions have remained favourable, with cool humid weather prevailing. If conditions become warm and dry following early infection, disease development stops and the plants are able to produce new healthy growth.

In cases where 25% or more plants are infected in winter or spring beans, sprays including the active ingredient metalaxyl-M will give good control of downy mildew.

The current forecast is for low to moderate risk of infection.

Post-emergence herbicide applications in beans and peas

Bentazone is the only active ingredient available in beans. Bentazone and MCPB are options in peas. Known herbicide-sensitive varieties are noted on the label - newer varieties that do not appear on the label cope well. Sensitivity scores are based on full-rate applications. At the more commonly used half rate of bentazone, with the option of a second application in beans, few crop sensitivity issues are reported. It is important to check that there is adequate leaf wax on peas as both bentazone and MCPB are mainly contact materials.

Download



Comments


No comments posted yet. Be the first to post a comment

To post comment without approval login or register

Display name

Please enter your name

Email (optional)
Comment

Please enter your comment

Post Comment

Your comment submitted successfully.Please wait for admin approval.

Some error on your process.Please try one more time.



Jobs


17 March 2015
LGV Fitter / Mechanic / Agriculture
Additional ***10% weekly bonus*** discretionary bonus plus benefits PLUS OVERTIME A LGV garage fitter is required to join a h...

23 March 2015
Nursery Manager
Nursery Manager: A capable horticulturalist and operations manager is required to play a leading role in co-ordinating and ma...

25 March 2015
Engineering Technician - Kendal
Dale Farm is a leading dairy company supplying a wide range of consumer and food ingredients products into the UK, Irish and ...

16 March 2015
Postdoctoral Scientist
This will enable high-yielding, stress and disease resistant varieties, with a particular end-use quality, suitable for an ef...

19 March 2015
Brand Manager, Surrey
Develop and drive New Product Development initiatives based on the Dairy For Life category vision. This is working for the UK...




Top stories you may have missed
23 March 2015 | Cattle

UK butchers face difficulties to recruit...

Butchers in the UK are losing a generation through lack of training opportu...


20 March 2015 | Arable

Dust - the secret fertiliser?

NASA research has revealed how dust blown from the Sahara desert helps supp...


19 March 2015 | Arable

The Budget 2015: A Farmer's Budget?

“In the run up to the Budget 2015 most commentators were predicting that th...


17 March 2015 | News

UK's first floating solar power system l...

The UK’s first fully operational floating solar panel system has been unvei...


13 March 2015 | Animal Health

Labour and Conservatives clash over badg...

Axing the badger cull in England and Wales will save more than £120 million...


12 March 2015 | News

Solar could be cheapest energy source by...

By 2025, solar power could become one of the cheapest forms of energy in ma...


11 March 2015 | Finance

English buyers turn their attention to S...

Demand for Scottish farm land remains strong and continues to be better val...


9 March 2015 | Cattle

2020 vision for the Welsh red meat indus...

The Welsh red meat industry should aim to increase sales by at least 34 per...


6 March 2015 | News

MP raises egg industry concerns on trans...

Fears about the impact that a proposed transatlantic trade agreement could ...


Stay safe and legal when flying drones

The use of Unmanned Aerial Vehicles and Unmanned Aircraft Systems - or dron...