Management of Soilborne Diseases in Strawberry Using Vegetable Rotations.

Area of Science:

• Agricultural Science
• Plant Pathology
• Horticulture

Background:

• Soilborne diseases, particularly Verticillium wilt caused by Verticillium dahliae, significantly impact strawberry (Fragaria × ananassa) production.
• Effective disease management strategies are crucial for maintaining strawberry crop health and yield.

Purpose of the Study:

• To determine the influence of different crop rotations on soilborne diseases and strawberry yield.
• To compare the efficacy of crop rotations with standard fumigation practices.

Main Methods:

• Field trials were conducted at two sites: one infested with Verticillium dahliae and another without known infestation.
• Strawberry was rotated with broccoli, Brussels sprouts, cauliflower, or lettuce.
• Effects on V. dahliae and Pythium populations, plant vigor, disease severity, and fruit yield were assessed.

Main Results:

• Broccoli and Brussels sprouts rotations significantly reduced V. dahliae microsclerotia and Verticillium wilt severity compared to lettuce rotations.
• Strawberry vigor and fruit yield were highest in broccoli-rotated plots, even in fields without detectable V. dahliae.
• No rotation treatment outperformed the fumigated control across all measured variables.

Conclusions:

• Crop rotation, particularly with broccoli and Brussels sprouts, is an effective cultural practice for managing Verticillium wilt in strawberry production.
• Broccoli is a beneficial rotational crop that enhances strawberry growth and yield, even in the absence of V. dahliae.
• The broccoli-strawberry rotation system shows economic viability for growers.