How to save wilted tomatoes? Different situations call for different treatments

SummaryStrong sunlight: when the temperature is above 35°C, water evaporation causes the leaves to wilt, so the temperature needs to be kept below 28°C. Improper watering: soil lacking water, or the water temperature being higher than the soil temperature when watering, can both cause the plants to wilt, so watering needs to be done before 9 a.m. Root damage: because the roots grow relatively shallowly, the plants are prone to wilting, so a rooting agent needs to be applied promptly to strengthen the roots. Weather reasons: after a prolonged period of low temperatures in winter, a sudden rise in temperature can cause wilting, so the greenhouse cover must not be pulled open all at once.

1. Strong sunlight

1. Symptoms

(1) If the midday sunlight is too strong and the temperature inside the greenhouse is above 35°C, the water in the tomato leaves evaporates heavily, causing the leaves to wilt.

(2) If at this time the water absorbed by the roots from the soil cannot meet the needs of the tomato's transpiration, the tomato plants will show wilting, and in severe cases the leaf edges of the tomatoes will appear scorched.

2. Solutions

For tomato wilting caused by high temperatures, growers should keep ventilation going at all times and keep the temperature inside the greenhouse below 28°C, which can effectively prevent wilting caused by strong sunlight.

2. Improper watering

1. Symptoms

(1) The first type is tomato wilting caused by soil lacking water, which can be resolved once watering is completed.

(2) The second type is caused by the water temperature being relatively low while the ground temperature is relatively high when watering; this injures the tomato's fine roots, so they absorb insufficient water, causing the tomatoes to wilt.

2. Solutions

(1) For plant wilting caused by improper watering, growers should water immediately in the morning just after the curtain is pulled up, or pull the straw curtain back up promptly after watering is completed, and avoid watering after 9 a.m.

(2) When tomatoes wilt because their fine roots are injured, growers should promptly apply a rooting agent by irrigation, or raise the ground temperature to promote the rapid recovery of the fine roots, thereby easing the wilting of the plants.

3. Root damage

1. Symptoms

If tomatoes are planted in winter, more watering is done after the tomatoes are transplanted, and the roots grow relatively shallowly. When the temperature drops, the plant's roots are damaged and the plant wilts.

2. Solutions

(1) For plant wilting caused by root damage, water should be appropriately controlled after transplanting the tomatoes to promote root growth, thereby increasing the tomatoes' resistance.

(2) When watering, fertilizers containing ingredients such as amino acids and seaweed extract can be used together to promote root development.

4. Weather reasons

1. Symptoms

(1) In winter, greenhouse tomatoes are in a low-temperature stage. If low temperatures or hazy weather occur continuously, the light inside the greenhouse will be relatively low, and the plants' growth will be relatively weak.

(2) If the greenhouse cover is suddenly pulled open after the weather clears, the light inside the greenhouse suddenly increases and the temperature rises relatively quickly, so water supply cannot meet demand and a wilting state appears.

2. Solutions

On rainy, hazy days or when the sunlight is too strong, the greenhouse cover should be removed gradually, not pulled fully open all at once, otherwise it will cause great damage to the tomato roots and may even kill the plants.