Scale insects can cause a number of debilitating problems in nut-bearing trees. Whether stressing trees through water deprivation or killing their branches and fruit spurs, San Jose scale is a particularly destructive pest — one that tree nut growers must keep a close eye on during the dormant season.
San Jose scale harms trees by feeding on the host plant and secreting a white substance onto the fruiting wood that eventually turns black. It is during the dormant season, before they resume their growth in late winter — known as the “black cap stage” — that juvenile San Jose scale insects are most susceptible to an effective insecticide spray treatment.
A dormant or delayed dormant application of Seize™ Insect Growth Regulator provides long-lasting control of scale, including San Jose scale, lecanium scale, black scale, walnut scale, brown soft scale and more.
Seize is the softest scale material available — meaning no export issues — and the least disruptive. By preventing the immature San Jose scale insects from becoming adults, Seize breaks the scale life cycle.
For best results, apply Seize with spray oil at the recommended rate. Because thorough coverage is crucial for control, ensure that the air blast sprayer has a good spray pattern and enough water (about 100-200 gallons per acre).
With a delayed dormant application, Seize will also provide suppression of peach twig borer (PTB), making Seize an ideal partner with DiPel® Biological Insecticide in a soft chemistry PTB program.
In walnuts, if both San Jose scale and walnut scale are present, the ideal timing for a Seize application is just as walnut trees are leafing out — which is generally close to the spray timing for codling moth as well.
To learn more about Seize and the rest of the Valent portfolio of tree nut products, visit www.valent.com.