1. Fertilizer depends on what fertilizer it is. Generally speaking, nitrate fertilizer is highly concerned because it will be converted into nitrite, which has the risk of cancer. In that case, 7- 15 days is enough.

2. If it is non-nitrate, such as sulfate and phosphate, there is no difference between eating it at that time and eating it every few days.

Supplement: When it thunders in rainy days, nitrogen in the air will become nitrate nitrogen fertilizer, which is different from the current industrial synthesis. The product is the same, completely natural. So now some people say that chemical fertilizer is not needed at all, which is completely a false proposition. Without chemistry, people can't exist at all, and their own physiological functions can't be separated from chemistry.