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The causes of the lack of nutrients in plants is the subject that we want to address in this article. Deficiency in plants has various causes. The deficiency created can be due to the absence of that element in the soil, or it can be due to its blocking. It means that element is present in the soil, but for various reasons it cannot be absorbed by the roots. be with us.
Types of deficiency:
In general, there are 2 types of deficiency in plants. Real scarcity and false scarcity. True deficiency, lack of nutrients in the soil or the presence of chemical compounds that cannot be absorbed by the plant. False deficiency, lack of nutrients due to special conditions in the cultivation environment. In this case, the roots are not able to absorb the elements in the soil, such as the following :
The coldness of the soil
In this case, the potassium in the soil is not absorbed by the roots, as a result, the symptoms of potassium deficiency appear in plants (causes of nutrient deficiency in plants).
Waterlogging of the soil
Iron, copper and calcium are not absorbed in flooded soil. For example, successive irrigation in the soil activates the conditions of regeneration and oxidation in the soil and elements such as iron and manganese become unabsorbable due to oxidation.
Improper pH
Manganese and zinc are not absorbed in very acidic soils and iron, magnesium and boron are not absorbed in alkaline soils.
The mutual and negative effect of elements towards each other:
In this case, the presence of one element prevents the absorption of another element. For example, the presence of too much potassium causes magnesium deficiency, or the presence of too much nitrogen causes the vegetative growth of the plant and disrupts the balance of the consumption of some elements needed by the plant.
Soil washing:
Soil washing, especially in light soils, which causes a lack of soluble elements in the soil, such as nitrogen and magnesium. In acidic soil conditions, this solubility occurs for iron and calcium and they are washed, and in alkaline conditions, potassium washing occurs.
Soil compaction:
With the compaction of the soil and the lack of gas exchange in the soil, carbon dioxide gas is trapped and forms bicarbonate with the carbonates of the soil and precipitates calcium, and the alkaline conditions created in the soil lead to the deficiency of some elements.
Consumption of fresh or unrotted animal manure:
The use of unrotted animal manure at first causes the nitrogen in the soil to be used for rotting the manure and as a result the plant faces nitrogen deficiency and on the other hand with the use of animal manure, the amount of some elements in the soil increases several times and leads to lack of absorption. other elements in the soil.
Imbalance in fertilizer consumption:
The use of high-use chemical fertilizers and the lack of use of low-use chemical fertilizers have led to their shortage in the soil, and the need for proper management in the use of high-use and low-use fertilizers in the soil seems essential.
Soil dryness:
During drought and excessive evaporation from the soil surface, some soluble salts such as potassium and sodium chloride and a little calcium and magnesium or nitrate compounds come to the soil surface and as a result, it is not possible to absorb these elements for the roots.