The trees aren’t the only things in your orchard that should be bare after the harvest is complete. Keeping berms free from troublesome annual broadleaf weeds and grasses is an important part of maintaining a healthy orchard.
In the days immediately after harvest—sometime after Oct. 15, depending on local soil moisture—tough weeds such as fleabane and marestail will begin to germinate. If left to their own devices, these weeds can quickly take over an orchard and are difficult to eradicate once established.
Due to growing concern over resistance issues with postemergence herbicides, tree nut growers may want to consider a more proactive approach to winter weed control and apply a proven preemergence residual herbicide.
An application of Chateau® Herbicide—right after harvest, and again prior to the second flush of weed emergence in late winter—provides maximum residual control of weeds, including fleabane and marestail, for California growers.
A well-timed Chateau application lasts for several months at a time. And, with proven staying power under various weather conditions, Chateau won't leach or lift off, or lose power before activation by ¼"rainfall or irrigation.
In other words, Chateau stays where you put it, and it can sit longer than competing herbicides while waiting for either rainfall or irrigation to activate its power.
For best results, apply Chateau in partnership with a burndown herbicide such as glyphosate, paraquat or Treevix Herbicide.
Plus, make sure berms are clear of debris, calibrate sprayers properly, and ensure uniform spray coverage across the entire berm.
To learn more about Chateau and the rest of Valent’s portfolio of tree nut products, visit www.valent.com.