What is the best time to spray swelling agents on celtuce?

Celtuce swelling agent can be used from the seedling stage through to the harvest stage. Generally, spray once every 8-10 days. Dissolve each 25 g bag in 15-30 kg of water and spray evenly to wet the leaf surface, or add 1.5-2 bottle caps to every 15-20 kg of water, stir well, and spray-irrigate 0.25-0.5 kg per plant, just until it does not drip.

1. Correct ways to use swelling agent:

Dissolve the swelling agent in clean water in a certain proportion and spray it on the leaf surface on a sunny, windless afternoon. Note that the use of swelling agents has certain technical requirements, and the effects on different crops and different varieties differ. Swelling agent must be used in the proper amount and must not be used at will; generally, 7.5 mg-10 mg per kg of water, but the specific amount still depends on the product instructions.

2. Precautions for using swelling agent:

1. Use it during the reasonable growth period.

2. Accurately grasp the concentration to use, and do not increase the amount at will,

3. Strictly control the number of applications, and do not increase the number of treatments at will.

The above is the relevant introduction on when to spray swelling agent on celtuce, and we hope it is helpful to everyone.