resourcessoli.blogg.se - Strawberry leaf scorch

The disease starts in low lying areas with poor drainage and expands outward. Look for poor growth, smaller fruit, and stunted plants. It can infect fruit, with small, sunken, leathery black spots.īlack root rot (BRR): Common in older or stressed patches, this causes lower yields over time and eventually plant death. In severe cases, the leaves turn brown and die. The centers of the spots turn gray and then white. Leaf spot: No longer as common as it once was, this appears as small purple spots on leaves and stems. In severe cases, the leaf curls upward, looking scorched. As the disease progresses, the tissues around these spots turn reddish or purple. Leaf scorch: Look for dark purple, angular to round spots that appear on the upper surface of the leaf. Mushy pink spots on fruit become dark brown and dry. Severe infections can turn the whole leaf brown. Leaf blight: This displays as solid reddish-purple spots on leaves that develop a tan center as they grow, becoming V-shaped lesions. Infection is most severe in rainy or humid conditions. It overwinters on dead strawberry leaves, infected straw, mummified fruit, and weeds. Gray mold: This has a moldy appearance and can begin anywhere on the fruit. As noted, it’s important to remove diseased fruit, flowers, and leaves to prevent the spread of disease once it’s found its way into your patch. Here are some of the usual culprits that might invade your strawberry patch. Handling berries with care and refrigerating soon after picking.

Keeping diseased fruit separate from healthy fruit.

Harvesting frequently and remove infected plants and fruit.

Planting in rows or narrow beds, no wider than 18 inches, to promote good air movement around plants.

Removing weeds to improve air circulation.

Keeping plants from becoming too crowded.

Planting in sites with good drainage, and adding compost to improve drainage.

Buying healthy, disease-free plants from reputable sources.

Mulch around plants during the spring and summer reduces diseases by limiting spore movement caused by raindrop splash. Mulch: Winter mulch reduces seasonal injury, and plants that have less winter injury have reduced disease. After that time period, soil can build up a population of root-rotting diseases. Site rotation: If possible, rotate strawberries to different parts of the garden every three to four years. If you must use a sprinkler system, water plants in the morning on a sunny day to allow leaves to dry quickly. Watering: Avoid getting leaves wet by using a drip system or soaker hose. They involve keeping plants clean, dry, and undamaged. These best practices are aimed at producing strong, healthy plants that can withstand diseases, and at avoiding situations that contribute to the development of disease.

This is especially important as there are no fungicides approved for home use for many diseases. Your best weapons against these are best planting practices, which help prevent disease in the first place. Like all food crops, strawberries are susceptible to various fungal diseases.