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The symptoms presented on a real plant sample can be compared with the photos in this guide to identify possible causes. The booklet is organized into two broad sections, one showing the common insect pests that attack the crop and the other showing the various symptoms of poor health.
2 paź 2022 · Learn how to identify some of the most common tomato bugs and pests. Use our tips to prevent them
Septoria Leaf Spot. Early Blight. Bacterial Spot. Plant tomatoes where no tomatoes, potatoes, peppers, or eggplants have been for the past 3-4 years. Keep tomato leaves as dry as possible. Use drip irrigation or soaker hose. Water in the morning so leaves dry quickly in the sun. Stake or cage plants. Space plants so that air flows between plants.
Dark brown spots with broad yellow haloes appear on the leaves, and concentric rings can be found in the spots under bright light. Stems and fruit can also be infected. It often progresses from the bottom of the plant upward.
Inspect plants for characteristic damaged symptoms (e.g. the blotch-shaped mines in the leaves, puncture marks on fruits, exit holes, frass). The action threshold is 2 larvae per plant for greenhouse production and 3 larvae per plant for open field production or about 8% defoliation.
Management Leaves must be inspected in June so that this pest can be found when small and before it feeds on fruit. Identification of the pest is essential to understand when controls should be started. Growers should watch for this pest in their tomatoes each year, because its population will fluctuate greatly from year to year and field to field.
20 lis 2023 · What are the common tomato leaf problems and how to identify them? Tomato plants are susceptible to various leaf problems, including yellowing, curling, and spotting. Yellowing of the leaves could be a sign of nutrient deficiency, while curling may indicate water stress or insect infestation.
