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Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...
Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite .
[10] A physician preparing an elixir, from an Arabic version of Dioscorides's pharmacopoeia, 1224. Plants are a primary source of basic chemicals, both for their medicinal and physiological effects, and for the industrial synthesis of a vast array of organic chemicals. [11]
Al 3+ 0: 10 [70] Al 2 (SO 4) 3: Essential for some plants (e.g. peas, maize, sunflowers, and cereals). Can be toxic to some plants below 10 ppm. [70] Sometimes used to produce flower pigments (e.g. by Hydrangeas). Silicon: Variable micronutrient: SiO 2− 3: 0: 140 [71] K 2 SiO 3, Na 2 SiO 3, and H 2 SiO 3: Present in most plants, abundant in ...
A botanist, plant scientist or phytologist is a scientist who specialises in this field. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants, including some 391,000 species of vascular plants (of which approximately 369,000 are flowering plants) [2] and approximately 20,000 bryophytes. [3]
Botany is a natural science concerned with the study of plants.The main branches of botany (also referred to as "plant science") are commonly divided into three groups: core topics, concerned with the study of the fundamental natural phenomena and processes of plant life, the classification and description of plant diversity; applied topics which study the ways in which plants may be used for ...
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Plant domestication is seen as the birth of agriculture. However, it is arguably proceeded by a very long history of gardening wild plants. While the 12,000 year-old date is the commonly accepted timeline describing plant domestication, there is now evidence from the Ohalo II hunter-gatherer site showing earlier signs of disturbing the soil and cultivation of pre-domesticated crop species. [8]