Aug 16, 2024

Michigan crop report notes cooler temps, with increased pest pressure

Michigan’s vegetable crops are facing increased disease pressures as cooler temperatures continue to affect the state, according to the recent Michigan State University (MSU)’s crop update. MSU shared the following information in the Aug. 14 update.

Asparagus

Asparagus fields have seen the spread of Tree of Heaven, which requires targeted herbicide treatments. Additionally, recent conditions have been favorable for purple spot development, necessitating careful disease management.

Brassicas

In Brassicas, including broccoli, kale, and cabbage, white mold and black rot are significant concerns. Weed management has also been challenging due to limited post-emergent herbicide options. Carrots and celery in west-central Michigan are showing signs of increased disease severity, indicating the need for timely fungicide applications.

Onions

Onions are battling downy mildew, which threatens to severely impact yields if the disease continues to spread. Cucurbit crops are facing widespread powdery mildew, with downy mildew confirmed in 17 counties. Striped cucumber beetles remain a major issue, particularly for organic growers, who must adopt more holistic approaches to manage these pests.

Sweet corn

Sweet corn harvests are progressing, though earworm pressure may increase, requiring strategic insecticide use. Michigan State University Extension is conducting a nutrient management survey and offers produce safety reviews for farms during the harvest season.

Upcoming events will cover various agricultural topics, providing valuable information for growers.

The entire report is available online at MSU’s website.