Scout for Aggressive Weeds Post-Harvest in Almonds
Harvest is a good time to take note of weed issues within your almond orchards. The next step is to scout your orchard post-harvest to identify aggressive weeds to make a management plan for this fall and next season.
What, When, Why and How to Scout for Aggressive Weeds
- What: Note the weed species, like marestail or fleabane; location in the field; degree of control achieved with current program; and herbicides used in the past. If you need help identifying weeds in different stages of growth, consult the names and photos here.
- When: The best time to scout is after the first rains of the fall, when winter annuals have germinated and are starting to emerge (November – January).
- Why: Weeds compete with almond trees for water and nutrients, which can be detrimental to an orchard
- How: Monitor in a thorough and systematic manner including the field margins, ditch banks and irrigation canals.
After scouting for aggressive weeds, select the appropriate pre and post-emergence herbicide that best controls the weeds present. A tank mix of 1 or more herbicides may be required to control all of the weed species. Broadworks® herbicide provides preemergence and post-emergence control of weeds, including glyphosate-resistant broadleaf weeds. The best control is achieved when applied either before weeds germinate or before they reach 4” tall.
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