Revystar® XE in Spring barley blog
7 Jun 2021
Andrew Booth of Savock Farm is an innovator, not afraid to try new products, techniques and enterprises on over 1200 hectares (ha) of owned, rented and contract farmed land near Ellon in Aberdeenshire. His involvement with BASF’s Real Results was borne of a desire to innovate, testing the latest chemistry under his unique farm conditions using scientific protocols which meant meaningful results would be achieved.
Now in his third season of Real Results trials, here he tells of how Revystar® XE performed on his spring malting barley last season.
Andrew said, “Last year in our BASF Real Results spring barley trial the tramlines treated with a half label rate of Revystar® XE out yielded the farm standard by 0.45 t/ha.
The trial was in a field of Laureate, drilled in March after a crop of winter wheat. All tramlines received the same T1 of Proline and Arizona on the 19th of May but at T2 on the 16th of June, we applied Revystar® XE at 0.75 l/ha to half the tramlines and Proline and Arizona to the remainder.
|Treatments||BASF Standard Rate (l/ha)||Farm Standard (l/ha)|
|T1 (19 May)||Farm Standard|
Proline 275 (0.25) + Arizona (1.0)
|T2 (16 Jun)||Revystar® XE (0.75)||Proline 275 (0.35) + Arizona (1.5)|
Walking through the tramline trial we hardly noticed a difference between the treatments as unusually dry weather meant disease pressure was very low and when the trial was assessed for disease by ADAS on the 7th of July at GS70 the results backed this up.
It was found there were low levels of Ramularia and Rhychosporium on all leaf layers but no significant differences between treatments were seen, either in terms of the disease severity or the percentage of green leaf area.
But when we put it across the weighbridge, that was when we noticed the yield lift from the Revystar® XE treated tramlines and it was a significant effect. The Revystar® XE treated tramlines yielded 0.45 t/ha more than the farm average. Visually you couldn’t see much, but it certainly came through in the results.
At the beginning of our involvement with the BASF Real Results I hadn’t really appreciated the level of detail the trials go into; how accurate they are because of the robust statistics developed and used on the trial by ADAS. It really does make it a genuine field trial as opposed to a farmer’s field trial.
On the 7th of May, before the fungicide programme started, the NVDI (normalized difference vegetation index), a spectral reflectance index from satellite data, which shows a combination of canopy size and greenness, showed there were no visible differences between tramlines. This gave us confidence that the results we got were real differences between the treatments.”