Causes and Control Methods of Dry Tips on Tomato Sepals

The sepals of tomato fruit have now become a standard for measuring fruit quality. If the sepals of tomatoes show dry edges, rot, and yellowing, the price of the tomatoes will be greatly reduced. However, during the cultivation process, dry tips on tomato sepals are a common occurrence, so what causes dry tips on tomato sepals? Let's find out together.

1. Unreasonable use of hormones

When many vegetable growers force tomatoes to redden, they use an unreasonable concentration of ethephon. Generally, 40% ethephon at about 3000 times dilution is more suitable, but some vegetable growers are eager for quick results and use a concentration of 1000 times or several hundred times. Improper concentration use can very easily cause dry tips on tomato sepals. Therefore, when using hormones to force tomatoes to redden, the concentration must be reasonably matched according to the pesticide instructions. Do not mix it at will, and at the same time pay attention to the combination of hormones, as some hormones will produce antagonism.

2. Nutrient deficiency

During the color-turning period of tomatoes, if the plants lack trace elements, it often causes abnormal phenomena such as sepals turning yellow or leaves curling. Therefore, during the color-turning period of tomatoes, foliar fertilizer should be sprayed in time to supplement the trace elements needed by the plants. When applying fertilizer to the soil, attention should also be paid to supplementing foliar fertilizer, so as to prevent the sepals from curling and developing dry tips due to nutrient deficiency.

3. Excessive water control

Winter temperatures are relatively low. If the soil moisture is relatively high at this time, diseases will be more serious, so many vegetable growers often control water in winter. However, if water control is excessive, it can also cause sepals to turn yellow or curl. Therefore, when controlling water to prevent disease in winter, water control should be carried out on the premise of keeping the soil moist, so as to avoid excessive water control causing sepals to turn yellow.

4. Low temperature

In winter, some spraying is done because the insulation effect is relatively poor, or watering is done on cloudy and rainy days, resulting in low temperatures being too low for a long time. Because root activity is reduced, the nutrients and water absorbed are reduced, and the plant's nutrient supply is insufficient. Over time, this will cause the sepals to turn yellow and curl. Therefore, during the color-turning period of tomatoes in winter, attention should be paid to insulation, keeping the daytime temperature between 25-28 degrees and the nighttime temperature above 16 degrees, to reduce the occurrence of dry tips on sepals.

  The above is an introduction to the causes and control methods of dry tips on tomato sepals. We hope it can help you. If you want to learn more related knowledge, please follow us.