they do it. Although plants do not have the ability to move and go in search of the water and nutrients they need, as animals do, they do have the ability to set in motion different mechanisms, fundamentally located in their roots, that allow them to obtain the nutrients under conditions. in which these are little available. 1. Plants do not need complex foods Plants do not need complex foods, such as protein, fat, or carbohydrates, for nourishment. CO₂ is enough for them, which they take from the air, water and various mineral elements, considered essential, which they take from the soil (or from the nutrient medium in which they are grown, such as a nutrient solution). There are mineral elements that they need in greater quantities, such as nitrogen,

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phosphorus, potassium and calcium, which are Greece WhatsApp Number List called macroelements or macronutrients. In addition to these, there are others that are needed in very small amounts and that are called microelements or micronutrients, such as iron, copper and zinc. The elements are usually absorbed by plants in different chemical forms, such as nitrate, phosphate, ions … 2. All the essentials are important The Law of the Minimum , developed by Carl Sprengel and popularized by Justus von Liebig, tells us that a plant’s development is limited by the relatively scarcer essential mineral at any given time. Normally, the most frequent deficiency in plants is nitrogen, since it is the element that they require in the greatest quantity. However, any deficiency, even of elements

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that are needed in very small quantities, such as iron or zinc, can limit the development of the plant and cause its death, if it cannot solve this deficiency. 3. Not all nutrients are equally available The total concentration of essential elements for plants varies from one soil to another. Sometimes, there are elements whose total concentration is high but which, however, are little available to plants, as they are in highly insoluble chemical forms. This is the case, for example, of iron and phosphorus, which are abundant in most soils, but which can be quite inaccessible to plants in certain soils, as is the case of iron in calcareous soils. The opposite case is that of elements (or chemical forms that contain them) that are very soluble in the soil, such as

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