Green fertilization: how to do it, which plants to sow and how to best plant them. All useful information for practicing the green manure technique.
Is calledgreen fertilizationor technique ofgreen manure. It is a very ancient agricultural practice, it shows us that nature is never wrong and you just need to know how to support it in order to always have fertile soil with an optimal composition. Green manuring in the vineyard has always been practiced, the same technique can also be practiced in the small home garden as well as in the open field.
Green manure or green fertilization, what it is and what it is used for
What does the green fertilization? In the sowing of certain plants that are then buried when still young and not reaching flowering.
What is the green fertilization? The advantages are many, among others:
- It protects the water table and prevents water pollution
- Avoid soil erosion
- Maintains good soil structure
- Prevents the loss of nutrients
- It suffocates the weeds and prevents their growth in subsequent crops
- Control and mitigate the spread of parasites
- It's about afertilization100% organic
- It enriches the soil with essential nutrients for crops
The plants grown for green manure, buried and mixed with the soil, become anatural fertilizer able to enrich the soil.
Plants for green fertilization
I told you that the green fertilization consists in sowing and burying plants that are not yet mature, yes, but what to sow? There are many green manure plants that can be used and this varies according to the period.
Green manuring, in fact, must be done after a cultivation, at any time. Generally, it is recommended to perform a summer or autumn green manure, in fact most of the green manure plants are sown between summer and autumn, following the summer harvest to cover the ground during the winter.
Among the summer green manure plants there are peas, vetch and lupine. Generally, plants for green fertilization are:
They enrich the soil with nitrogen. Among these green manure plants are the field bean, clover, vetch, forage pea, sainfoin, lupine, soybean, lentil, bean, broad bean and pea.
They are useful for rapid growth, therefore for those who want to keep the soil only a short time at rest. I point out the rapeseed, mustard and colza.
Grasses are always associated with legumes, among the combinations I point out the mixtures of seeds given by oats, vetch and forage pea.
- Other green manure plants
Other green manure plants include phacelia and buckwheat.
After incorporating the plants fromgreen manurein the soil, it will be necessary to give nature a break of at least two weeks, just enough time to start the natural degradation of the biomass and start the release of nutrients into the soil.
Green fertilization, how it's done
In the article "How to make green manure" I explained to you which are the most suitable seed mixtures based on the period and how to make the most of this technique natural fertilization of the soil. In practice, fordo green fertilizationyou will have to:
- Sow one or more green manure plants.
- Sow deeper than you would in open field, plants will take longer to sprout but soil quality will improve.
- Wait for the plants to grow.
- The plants should be buried when they are young and before flowering.
- Mow green manure plants and allow residues on the soil to wilt slightly.
- Incorporates roots and residues into the soil, to a depth of 10 - 15 cm.
To incorporate the biomass residues into the soil, you can work the plant residues first with the pitchfork and then proceed with a light hoeing, in order to bury the biomass at a depth of 15 cm. Alternatively, you can use a tiller with blades that allow a working depth not exceeding 20 cm.
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