11 08 17 E Bulletin - Page 1



E-Bulletin
8th November 2017
For further information please contact
Dick Neale – 01945 586422
dick.neale@hlhltd.co.uk - www.hlhltd.co.uk
Cereals
Weeds: Blackgrass emergence has been protracted this year due to high dormancy levels in seed and warmer than
average weather and soils throughout October. Post-emergence contact graminicides are being considered as well as
additional flufenacet top-up applications.
Pests: Seed treatments for barley yellow dwarf virus (BYDV) may be about to run out on early drilled cereal crops, these
last on average 6-8 weeks in warm rapid growth conditions. Lower late autumn and early winter temperatures as well as
reduced day length will reduce the opportunity for aphid infestation. If aphids are being found in the crop, further
insecticide treatments should be considered to prevent aphid infestation and transmission of BYDV.
Oilseed Rape
Weeds: Most early herbicide applications have now taken place with propyzamide either applied or planned to be
applied in the coming weeks. The efficacy of propyzamide is dictated by soil moisture and weed size. There is a
requirement for adequate moisture present in the soil for uptake by roots but not so much that drains are running.
Weeds must also be small enough to have their root in the upper few inches of soil. If weeds are rooting at depth,
propyzamide will be less effective. Cooler soil temperatures will determine the longevity of herbicidal activity but not its
efficacy.
Pests: Peach potato aphid are being caught in numerous suction traps across the country with increased catches in the
North (Edinburgh, Newcastle and York). Populations are often highly resistant to pyrethroids but there are some nonpyrethroid options which can be considered. Pymetrozine and thiacloprid can both be applied for aphid control but can
only be used once in the autumn. Optimum timing for treatment is not readily determined but if populations are
increasing rapidly and the majority of aphid migration into crops has ceased then treatment should take place.
Diseases: Phoma is now present in most crops. Fungicides have either been applied or are due to be applied shortly to
reduce phoma pressure and risk of stem canker. Light leaf spot has been slower to appear, with the risk considered to be
moderate in most parts of the country however there is large variation between regions. Earlier sown crops and those
with lower disease resistance are most at risk from early disease pressure and should be managed accordingly.
News
RPA: The new Rural Payments Agency (RPA) chief executive Paul Caldwell warned at this week’s Northern Farming
Conference that it will take time to improve the way support payments are delivered to farmers, amid mounting
cashflow concerns among farmers this winter.
The way RPA checks the rule, GAEC 5, relating to minimising soil erosion is changing from 1 January 2018. This means
that farmers must make sure they have put in place suitable practical measures to limit soil and bankside erosion and
can show this during any inspection. The RPA also advises, that if land is in an NVZ for the first time in 2017, farmers
should read about the transitional arrangements by visiting www.gov.uk/guidance/nutrient-management-nitratevulnerable-zones
Glyphosate: The European Commission called for a formal vote on a 5 year proposal for the renewal of approval of
glyphosate at the Standing Committee on Plants Animals Food and Feed (SCoPAFF) on 9th November. There was no
qualified majority either in favour or against the proposal. Fourteen member states supported the 5 year proposal: Czech
The information contained within this document is for reference purposes only and in no way represents any form of
advice or recommendation. The responsibility for all crop management decisions remains with the client at all times.





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