You will need
- - mineral fertilizers.
All the mineral fertilizers are divided into potash, nitrogen, phosphoric and complex. Nitrogen fertilizers act quickly and are readily soluble in water. They can be used (except ammonium sulfate) in a dry form for feeding in the form of aqueous solutions.
In ammonium nitrate is 33 to 35% nitrogen in the spring make it superficially. This fertilizer is slightly acidify the soil, so you can add lime or chalk, if the land in the area and so sour.
Ammonium sulphate contains 20-21% nitrogen, it is well dissipated and also slightly acidify the soil. Urea is the most concentrated nitrogen fertilizer, the content of this substance in it 44-46%. It is used for the main application, in the form of dressing and foliar nutrition. Urea decomposes in the open air, so you need to immediately dig into the soil with surface application.
Nitrogen fertilizers need to make carefully, especially if the soil is light. Never exceed the dose specified on the packaging means, so as not to burn the roots of the plants to avoid wilting of leaves. Excess nitrogen may cause prolonged growth and reduce the hardiness and degrade the quality of the crop.
Phosphoric fertilizers make the soil more deeply, where is the whole mass of roots. Simple superphosphate powdered, consists of 19% of phosphorus, granular – 20%. They both dissolve in water to form a white precipitate.
Double superphosphate is produced in the form of pellets, it contains 48-50% of useful mineral that is highly soluble in water, does not precipitate, non-caking and easy to use.
Fertilizer potash is composed of 53-54% of the mineral is highly soluble. There is potassium salt, its content of nutrients less 30-40%. Potassium sulfate contains 50% mineral. The potassium sulfate is no chlorine, so it is used more often than others drugs. Make it in the spring and fall, mix with other fertilizersmi.
Now on sale a lot of fertilizer mixtures. Their composition is about the same. Always carefully read the instructions for using the tool, not to destroy plants, and to benefit them.
Don't forget about wood ashes, which contains potassium, phosphorus, lime and trace elements. It can be done in the spring and fall, not afraid to slightly exceed the dose.
Don't forget that nitrogen is needed by plants for growth, its bring in the spring and early summer. Phosphorus and potassium will be needed in the end of the season for better ripening of the crop. In the fall do not need to apply nitrogen fertilizer, they still do not hold out until spring.