White Core of Solanaceous Crops
Return to Physiological and Nutrient Disorders
White core is characterized by the presence of a thick, tough, large white core in tomatoes. Fruit with white core are often less juicy and flavorful. Excessively high temperatures and excessive nitrogen fertility can cause white core. Some varieties, including those that are not specifically bred for heat tolerance, are more susceptible than others. White core may occur more frequently in high tunnel tomatoes when temperatures are above 100°F and there is inadequate ventilation. If growing in a high tunnel, be sure to open end walls and side walls when air temperatures are consistently high. Consider installing overhead fans to increase air flow.
White core in tomato.
(Photo: UK Vegetable IPM Team)
