Its been widely reported that nematicides, and in particular Vydate, will be in short supply next year and this leaves many growers facing difficult decisions, says Dr Philip Burgess (Head of KnowledgeTransfer, AHDB Potatoes).
AHDB has consulted with UK experts on the control of free living nematodes (FLN) to ensure that the most up to date knowledge and experimental results are available to growers and agronomists faced with making these decisions.
We know the biology and control of FLN is complex and to be honest theres a lot we don’t know. But its important that growers and agronomists have the latest information available to them. Im delighted to have worked with UK experts to produce this document outlining what we currently know about FLN.
Eric Anderson (Scottish Agronomy) says that growers should get a move on and get oils sampled now.
Soil sampling for FLN needs to be carried at the right time and in the right way. We know from experience and the latest research that nematode numbers can change over small distances, up and down the soil profile and with the weather.
Therefore make sure you follow the correct protocol to get the best result possible. Its especially important to avoid frosty weather when sampling. So get a move on and get it done. And in my view its not only important to know the nematode species present but also to test for presence of the TRV virus, so Ill also be encouraging my clients to spend the extra to get the best information available.
John Sarup (Spud Agronomy) says that growers should manage their expectations as to the control level they might achieve.
Vydate has been the product of choice for FLNcontrol for a long time and the effect of this seasons shortage will mean difficult decisions for many. Its simply not possible to swap Vydate for something else as there are implications for the way its applied and importantly the harvest intervals. And to be frank theres implications to level of control you can expect, let alone the extra costs. Ill be getting my growers to look hard at each field and variety and asking what we can do to reduce the risk in each and every case.
“Growers must plan ahead as changing to a different product may requires alterations to the machinery being used,” says David Turner (Turner Agriculture Ltd). Different products may need different rotors to apply accurately and of course it may take more time to accurately calibrate the machines. Get ready for planting2016 now!
Risk assessment is key but in order to do this you need to understand the complex interactions,” points out Martyn Cox (Blackthorn Arable). “Different Nematode species, soil types and varieties and knowing detailed field history, is a key part of my risk assessment. But growers and agronomists need to remember that not all spraying is TRV transmitted by free living nematodes. Remember you need to know what your’e dealing with!
Nematicide Stewardship is critical for industry to maintain our control of nematode pests such as FLN in the future,” comments James Lee (Group Technical Manager, GVAP). “We have very few weapons left in our armoury; and one less in 2016 with the temporary loss of Vydate. Unless we can be seen to be using our nematicides judiciously and responsibly we risk losing them all. Training work shopsare available through supply chains or ARTIS [https://www.artistraining.com/node/228?title=Nematicide_Stewardship], should be attended by anyone involved in the application of Nematicides, and would prove useful for anyone giving advice on their use.