Stem end rot意思

"Stem end rot" is a term used in horticulture and agriculture to describe a specific type of rot or decay that affects the stem end of fruits, particularly tomatoes. It is a physiological disorder that occurs when the vascular system at the blossom end of the tomato fruit is damaged, leading to the death of the tissue and the development of rot.

Stem end rot is caused by a lack of calcium uptake by the fruit, which is essential for cell wall strength and integrity. Calcium is an important nutrient for plant growth and development, and it plays a crucial role in the formation of new cells. When calcium is not adequately transported to the developing fruit, the cells become weak and prone to decay.

Symptoms of stem end rot include a watery, dark brown to black discoloration at the stem end of the tomato. The affected area may become soft and mushy, and the rot can spread throughout the fruit. The disorder is more common in tomatoes that are grown in soil with low calcium levels, or when the plant's ability to transport calcium to the fruit is impaired due to stress factors such as drought, high temperatures, or rapid growth.

To prevent stem end rot, growers may use calcium supplements, ensure proper irrigation to maintain even soil moisture, and manage environmental conditions to reduce stress on the plants.