Potassium dihydrogen phosphate is a compound fertilizer that supplements phosphorus and potassium needed for crop growth. In the impression of farmers, fertilizers should be applied at the root, but for potassium dihydrogen phosphate, the majority are used for foliar spraying. How exactly should potassium dihydrogen phosphate be administered, and should foliar or root spray be chosen?
We are thinking about how a fertilizer should be applied, and the first question that needs to be considered is how to apply this fertilizer to maximize the use of crops; the second problem is how to apply the cost of this fertilizer; the third is how to apply this fertilizer to be the most cost-effective?
Next we continue with potassium dihydrogen phosphate. Potassium dihydrogen phosphate is a water-soluble neutral fertilizer that can be applied both at the root and as a foliar fertilizer. It has fast fertilizer efficiency, which can promote the rejuvenation of crops in a short period of time and improve the nutrient utilization efficiency of crop roots; at the same time, potassium dihydrogen phosphate can also promote the flowering of fruits and vegetables and improve the fruit set rate of fruits and vegetables.
First: How to apply potassium dihydrogen phosphate to maximize the use of crops?
Potassium dihydrogen phosphate can be applied at root or foliar. However, if root application is used, because potassium dihydrogen phosphate may react with trace elements in the soil, the fertilizer efficiency loss is about 40%; if it is sprayed as a foliar spray, potassium dihydrogen phosphate will begin to be absorbed by the crop in about half an hour, and the fertilizer efficiency is very fast, while the fertilizer efficiency loss is only about 20%. In other words, potassium dihydrogen phosphate is sprayed foliarly and has a higher utilization rate.
Second: consider how to spray from the cost point of view
The price of potassium dihydrogen phosphate is not cheap, so the market is also full of fakes. Some unscrupulous businessmen use magnesium sulfate as potassium dihydrogen phosphate for sale, defrauding profits. The price of genuine potassium dihydrogen phosphate on the market is basically 500 grams at more than 10 yuan, so the high price determines that the use of potassium dihydrogen phosphate can only be sprayed, while saving costs, it can also maximize the use of fertilizer.
Three: from the use of cost performance to consider
Because the price of potassium dihydrogen phosphate is too high, no farmer dares to use potassium dihydrogen phosphate as the main fertilizer. Only when the crop needs to promote flowers or set fruit steadily, or when the crop reaches the late growth stage and the root system is aging, it needs to be supplemented with fertilizer. In the later stages of crop growth, the most efficient and cost-effective fertilization method is only foliar spraying. Therefore, potassium dihydrogen phosphate can only be sprayed foliarly.
In summary, the best way to administer potassium dihydrogen phosphate is by foliar spraying rather than by using the root irrigation method.