This video taken around mid-July 2020 by drone and demonstrates the clear differences between each clone’s ability to withstand a high level of potato cyst nematode. The replicates (4 in the M5s and 2 in the M3) are easy to match up because of the astonishing homogeneity of an exclusively G. pallida population of PCN. There are also other plots for UK Breeders and control plots including unplanted blanks for Pf/Pi calculations.
This site has turned out to be truly amazing when seen from a plot tour, however the drone captures this moment perfectly with a bird’s eye view which is truly enlightening. The GPS breeding programme identified Globodera pallida as our key target and the ‘Redbourne-series’ over the last six years has proved instrumental in our selection process and no more so than in 2020.
Compare and contrast the stunted or completely dead plots and the ‘green-island’ plots at Redbourne. Then contrast this to the Scottish Broombank trial plots containing exactly the same clones which are universally green, robust and with large canopies, the only difference is the presence of a high level of PCN at Redbourne and essentially no PCN in the Scottish Broombank trials (See news item “GPS July 2020 Fly Over – Scotland Site“).
The E Park and Sons New Product Development Trials (NPDT) have now entered the final phase with the in-field assessments having taken place for emergence, vigour and maturity and Pf/Pi calculations.
These assessments have been improved by also using these drone images and videos to make ‘green leaf index’ (GLI) measurements relative to every replicate plot at exactly at the same time and light conditions and retains a record of that day for future use.
The GLI is helpful to estimate yield potential with the crop under PCN attack whilst all other factors are being controlled.