Preventing Tomato Gold Spot
Tomato Gold Spot (Speck) are small spots on the shoulder of the fruit, giving them a dull appearance and decreasing tomato shelf life. High humidity and direct sunlight on the fruit will further encourage gold spot.
Crop Nutrition and Tomato Gold Spot (Speck)
Tomato gold spot is caused by calcium oxalate deposition under the skin and becomes worse in high humidity environments. This disorder induces a dull aspect to the fruit and weakens the peel – shortening tomato shelf life.
Providing a balanced nutritional program, especially between potassium and calcium will minimize the occurrence of this disorder. Use of nitrates instead of chloride-based fertilizers will reduce the risk of tomato gold spot.
Sebastian Korob
Regional Market Development Manager
Related articles
Increasing Tomato Firmness and Shelf Life
Firm, fresh tomatoes are less prone to damage and have a longer shelf life. Higher levels of calcium in the cell wall will improve fruit firmness and as a result, transportation and storage characteristics.
Influencing Tomato Color
Tomatoes need to be bright and uniform in color, without green shoulders or immature green spots or blotches. The specific carotenoid, lycopene provides the tomato fruit with its red color. Higher levels of beta-carotene provide an orange color. Potassium...
Role of Potassium in Tomato Production
Potassium maintains the ionic balance and water status within the plant. It is involved in the production & transport of sugars in the plant, enzyme activation, and synthesis of proteins. Potassium is also required for pigment synthesis, notably...
Role of Calcium in Tomato Production
Calcium is a key component of cells holding the structure of cell walls and stabilizing cell membranes. It also has a direct influence on the salt balance within plant cells and activates potassium to regulate the opening and closing of stomata to allow...