Arizona Veg IPM Update: fall pest pressure, lettuce downy mildew, ‘yellow’ herbicides

With cooler temperatures in the Arizona low desert, expect a steady decline in insect abundance until temperatures begin to warm up again. The recent storm which passed through Arizona deposited a significant amount of rainfall in the region which can increase the development of downy mildew on lettuce.

The Arizona Vegetable Integrated Pest Management Update from the University of Arizona (UA) Cooperative Extension in Yuma, Ariz. released Nov. 27, 2013.

Fall pest pressure on desert vegetable crops

By John Palumbo, UA research scientist and Extension specialist

As typical this time of the year, the weather has finally broken and it feels like ‘winter’ has arrived in the low desert. With cooler temperatures, expect a

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