By Scout Nelson
The recent cooler weather has provided some relief to farmers, but earlier heat has already increased the total growing degree days. This means pests may appear sooner than expected, making regular field scouting very important.
Beneficial insects are actively present in fields. These insects naturally control pests and can reduce the need for chemical treatment. Farmers are encouraged to observe both pests and helpful insects before deciding on crop protection methods.
Proper pruning practices are also essential. Clean tools help prevent disease spread between plants. Farmers can disinfect tools using bleach solutions or rubbing alcohol. Cleaning should be done at natural breaks, such as at the end of rows or between plant varieties. Starting each day with sanitized tools is recommended.
Weed growth has increased due to regular rainfall. Farmers can manage weeds using equipment such as hand tools or tractors. In some areas, wet conditions have also led to slug damage, which can be controlled using bait products like Sluggo.
In crop updates, high tunnel cucumbers are growing rapidly. However, pests like aphids and thrips are present. Tomatoes are beginning to set fruit, which increases their need for nutrients and water. Farmers are advised to use small, regular nutrient applications through fertigation or foliar feeding.
Some tomato plants show yellow leaf edges, often a sign of potassium deficiency. However, farmers should also check for bacterial canker, a disease that affects plant stems and leaves.
Pea harvest has started on some farms, while strawberry production has slowed due to cool weather. Brassica crops are beginning to bolt, but flowering plants can support beneficial insects. Lettuce crops currently show less white mold than usual.
Tomatillo plants may be affected by three-lined potato beetles, which can be controlled by removing eggs and insects manually.
Vine crops face a risk from squash vine borers, which may appear earlier this season. Farmers should monitor crops closely and apply for treatments at the right time. More details are available at:
https://extension.umn.edu/yard-and-garden-insects/squash-vine-borers
Overall, careful monitoring and timely management can help farmers protect their crops and maintain healthy production.
Photo Credit: gettyimages-anilakkus
Categories: Minnesota, Crops, Fruits and Vegetables, Weather