It is easy to get large and sweet berries if you apply fertilizers in time.
There are two options.
How to feed raspberries in spring
This crop likes organic fertilizers, they are well absorbed and give excellent results.
Each bush can be watered with a solution of 1 kg of rotted manure and 10 liters of clean water. 1 liter of the mixture should be poured under each plant.
Chicken manure will also do. You need to dilute 0.5 kg in 12 liters of water. Here you also need to pour a liter of fertilizer.
If you want to use compost, then 1 kg of the product should be diluted in 2 liters of water. Under one bush, you need to put an incomplete shovel of the resulting liquid.
The second option of feeding involves the use of mineral agents. Phosphate and potassium fertilizers are suitable.
To do this, dissolve 4 tablespoons of superphosphate and 2 tablespoons of any potassium fertilizer in a 10-liter bucket of water. Then you can water the beds. After this procedure, it would not be superfluous to sprinkle with wood ash.