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Velum Prime, the liquid nematicide containing fluopyram, can now be applied as a broadcast spray using a conventional farm sprayer or a liquid applicator fitted to cultivation equipment. The application and required incorporation can take place up to 72-hours before planting.  

It means growers have an alternative means of application in addition to in-furrow spray at the time planting and can choose which ever method best fits their machinery and labour profile without fear of compromising efficacy.

The addition of a second application method further extends the versatility of a product that has done much to promote nematode control to situations where it was either not economically viable to use a granular product or where the short season nature of the crop precluded the use of a granule.

This is a win-win for growers. Across 22 replicated trials spanning nine years, the yield protection and PCN population management was broadly the same meaning growers can choose the method which best fits their existing cultivation and planting systems without compromising performance.

Velum prime: similar performance regardless of application method

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Practical considerations 

With little to separate the performance of either application method, the data were scrutinised to see if there were scenario specific conditions that would favour one method over the other.  Neither soil moisture status or soil type were found to be significant to performance, but method and depth of incorporation are important.

Growers should aim for an even distribution through the soil profile to a minimum depth of 10 to 20 cm, but up to 30 cm is supported. For this reason, Bayer does not advocate attempting to incorporate Velum Prime via de-stoning, which typically moves soil from a depth of 30 to 40 cm, or by the planter, which will fail to provide sufficient incorporation to the required depth.

If Velum Prime is to be applied by broadcast spray, the soil surface should also be as level as is practicably possible prior to application so as to ensure even distribution across the surface as this will then support even and consistent incorporation at depth.

Operator workload at planting will likely be a consideration for growers when choosing between application methods.

In-furrow application has the advantage of requiring a lower water rate – 100 L/ha compared with a minimum 200 L/ha for broadcast spray – meaning it can be applied at the same time as Amistar (azoxystrobin) for improved yield protection in the presence of tuber diseases. In contrast, the principal advantage of application by broadcast spray is that it can be done ahead of planting.

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In high-pressure situations, Velum Prime gives extra yield in sequence with granular nematicides
Source: 15 UK trials, 2016-19

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