Increased soil yield is possible due to gypsum
In coal-fired power plants, chemical cleaning of flue gases is often used to bind sulfur and reduce harmful emissions into the atmosphere. As a result of this process, gypsum is produced – calcium sulphate. This by-product is usually sent to a landfill, because they do not really know why it is needed at the plant. But, as it turned out, an increase in the productivity of the soil depends on gypsum in several ways at once.
How gypsum will lead to an increase in soil yield
In its pure form, gypsum has long been used in agricultural affairs, it is mined in deposits. Now, American scientists have decided to determine what useful properties have a more simple, affordable plaster, which is produced in power plants. As it turned out, such a substance has a large number of advantages.
First, such regenerated gypsum, like its natural congener, has a lot of calcium and sulfur in the composition, and these substances help to increase the soil yield and accelerate the growth of plants. Since the test material breaks down into small homogeneous particles, they show themselves particularly well when added to the soil. Even several years after being used to grow cereals, soybeans, alfalfa and rape, gypsum continued to produce sulfur.
Secondly, due to the low pH level of acidity, the soil loses its acid, and the regenerated gypsum prevents natural dissolved aluminum from reaching grown crops. This is a useful property, since aluminum can lead to slower growth of plants or even their death. Working as an aluminum blocker, gypsum allows you to grow the necessary crops in the soil, which in terms of acidity is not suitable for agricultural purposes.
In addition, scientists have found that due to the semi-solubility of gypsum, calcium is produced from it and also gets deep into the soil layers, and even deeper than calcium, which is mined from the widely used lime. The presence of calcium deep in the soil helps the plants to take roots deeper, get more nutrients and water.
Scientists summarized their experiments by concluding that regenerated gypsum has positive properties. It was also determined that it is absolutely safe for use in agriculture. If you use it to grow healthy crops, instead of sending them to a landfill, you can get significant benefits.
Meanwhile, in Russia, the task was set to deoxidize the soil faster – in the next 5 years, the liming should be spent on 12 million hectares of agricultural land. Experts estimate that by 2024 such works could raise the grain yield by 10 million tons, and oilseeds – by 2.5 million tons, compared with 2018 data.
In the Volga Federal District, almost 25% of all potatoes and oilseeds, 20% of vegetables, grains and legumes, as well as about 16% of all sugar beet in Russia are grown every year. In addition, last year in the district collected record volumes of sunflower – 4.6 million tons, which is one third of the collection in the entire Russian Federation.