Reminder for Grape and Potato Growers - Leaf and Petiole Testing
A reminder to all users of our seasonal Combined Leaf & Petiole test profiles for grape and potato tissue samples, to request small ziplock bags to contain the petiole fraction at sample collection. These are not yet available on our online order platform, so please get in touch if you need some of these. It is advised that before sampling, label both the large plant bag and the small ziplock bag, then just place the petiole fraction inside the ziplock bag and put this into the larger plant bag along with the leaf blade sample - and scan that sample-bag barcode through your sample submission app. Alternatively, if you are not an approved app user, then submit the samples via your usual analysis request form, noting there is a grape tissue specific form available on our website.
The Combined Leaf & Petiole profiles (CGP,CPotP) allow for analysis of the mobile nutrients (NO3-N, P,K,Mg) in the conductive tissue of the petiole as well as the full range of the nutrient sink in the leaf blade. View the Grape or Potato Crop Guides in the client resources section of our website for further information.
Use of plastic sample bags is preferred so that sample integrity is maintained. Hill Laboratories does full recycling of plastic sample bags through an agreement with Future Post, who turn suitable plastics into fence posts and other useful long-life products.