Alkaline soil for the vegetable garden

hello Riccardo

An alkaline soil can be an obstacle to the cultivation of vegetables, which prefer neutral or sub acid substrates, obviously it depends on what pH value your soil records. If your field is very basic it is certainly worth modifying it by acidifying it.

In answering your question, I start a little way to try to be understandable even to the most inexperienced readers: each soil has an easily measurable pH value, which indicates whether it is acidic or basic. This topic can be explored by reading the article on soil pH measurement. The soil is neutral when it has a pH around 7, if the value is lower we have an acidic soil, with higher values ​​we have basic or alkaline soil, and this is the case of Riccardo's soil. The pH is important because it affects the ability of the root system to absorb nutrients, in particular microelements such as calcium, zinc, copper, manganese.

Each plant has an ideal ph value, which represents the best condition in which this vegetable can grow and develop, not all plants are the same. For example, plants that are in great need of calcium or magnesium do well in sub-alkaline soils, therefore with a high pH, ​​which favors the assimilation of these elements. Plants that use a lot of elements such as iron, zinc, boron or manganese prefer acid soils (this is the case, for example, of wild berries).

Most of the vegetables require a pH value between 5.5 and 7, the most basic ones are cabbage, basil and asparagus, but also for them the pH must not exceed 7.5. So too alkaline soil is not suitable for the vegetable garden and must be corrected.

How to correct an alkaline soil

When the soil is too basic it must be corrected by acidifying it. A very simple mild correction is obtained with a robust organic fertilization, to be carried out using manure or compost, even ground lupine can help. However, this method does not allow to radically lower the pH, so it is not sufficient to quickly modify the soil.

To acidify small sizes of earth, you can use coffee grounds or even lemon juice, on larger surfaces I recommend incorporating blonde peat.

To maintain the pH even after correction, it must be fertilized regularly and mulched with spruce sawdust.

I also recommend paying attention to the water: if you irrigate the field using the water from the water supply network, you often unknowingly add limestone, which leads to an increase in pH, in this case it is better to switch to rainwater.

Video: How to determine is your soil alkaline or acidic? (October 2021).