First of all the root serves in order that fix a plant in the soil and to provide it with necessary mineral substances. The root is axial underground body of a plant.
Instruction
1. The first any sunflower seed has one back which grows and becomes the main thing. The main root one at any plant. There are still additional roots which are formed on a stalk or leaves, on any part of a plant, except roots. Those roots which branch off in process from side and additional roots are called side. All roots in total are called the root system of a plant. On the type there are core and mochkovaty root systems of plants.
2. In a core root system the main root as the main core, from here and its name is most developed. This root considerably differs from the others, it is thicker and longer. The core radical system is well noticeable at those plants which developed from a seed and also at grassy plants with a reinforced main root in which the plant reserves nutrients as it occurs at parsley, carrots, beet, a garden radish, radish and some other. Mainly core type of a root system, as well as haricot, a dandelion, sunflower, a beech, a birch and pear and also a set of other plants have young ligneous plants too. The root of a bodyak can get into the soil more than on 6 m in favorable conditions.
3. If the main root develops on an equal basis with numerous additional and is imperceptible among them if it is absent, then such type of a root system is called mochkovaty. Such root system for cereal and bulbous - a rye, wheat, corn, a plantain, onions, garlic, tulips is characteristic. The space which is occupied by such root system is most often very considerable, but roots get into depth not on long distance. Roots at corn expand in a radius at 2 m, and at an adult apple-tree can extend more than to 15 m. Development of a root system in many respects depends on the environment and the general conditions. If soils dense and the content of oxygen in them low, then at any plant of 90% of roots are concentrated in a blanket. In friable, nutritious fertile soils even the mochkovaty root system gets deeply.
4. To strengthen development in blankets of the soil of additional roots, plants are quite often hilled, pouring the earth to the stalk basis. Seedling sword-play at its change to the open ground is also everywhere widespread. At a sprout at the time of change pinch off a tip of the main root, and at the expense of it branching of a root system strongly increases, side roots expand due to oppression of the main thing. Thanks to a sword-play it is possible to reach placement of bulk of roots of a plant in the top, most fertile soil layer. Knowledge of features of development of root systems of various types, it is possible to fight successfully by means of plants against washing away of sand and against quicksands, against destruction of soils and formation of breaks and ravines. Coast of reservoirs and ravines strengthen, planting plants with a powerful superficial root system there.