Nutritional status of the plant itself
Nutrient-deficient plants have a strong ability to absorb nutrients. If the plant grows normally and the nutrient supply is sufficient, it will absorb less after spraying foliar fertilizer; otherwise, it will absorb more.

The usage and dosage of Indole-3-butyric acid mainly depends on its purpose and the type of target plant. The following are several specific usage and dosage of Indole-3-butyric acid in promoting plant rooting:

Foliar fertilizer spraying of vegetables should vary according to the vegetables
⑴ Leafy vegetables. For example, cabbage, spinach, shepherd's purse, etc. require more nitrogen. Spraying fertilizer should be mainly urea and ammonium sulfate. The spraying concentration of urea should be 1~2%, and ammonium sulfate should be 1.5%. Spray 2~4 times per season, preferably in the early growth stage.

Use Triacontanol to soak seeds. Before the seeds germinate, soak the seeds with 1000 times solution of 0.1% triacontanol microemulsion for two days, then germinate and sow. For dryland crops, soak the seeds with 1000 times solution of 0.1% triacontanol microemulsion for half a day to a day before sowing. Soaking seeds with Triacontanol can enhance the germination trend and improve the germination ability of seeds.