Journal of Biochemistry Research

Plant Growth Quality Articles

Plant growth depends not only on enough light, but also on a lot of macronutrients, especially nitrogen and oxidized phosphorus. Nitrogen consists of two oxidized forms, nitrate and nitrite, which are dominated by nitrates and ammonia. Ammonia is volatile and is used by plants quickly and hence in low concentrations in uncontaminated sea water. This makes nitrate the main indicator of nitrogen available to plants. Unlike freshwater, where phosphorus limits plant growth, seawater plants usually have limited nitrogen. Therefore, crop productivity, in this case phytoplankton, is the highest near the coast where freshwater runoff (including rivers) contributes to nitrogen, because data from satellite observations come from changes in sea colour. Tree plants grow in two ways. Primary growth increases in length or height, mediated by apical meristem tissue at the root and tip tips - which are difficult to see clearly in cross-sectional diagrams. Secondary growth increases the diameter of stems or roots. The vascular cambium adds xylem (inside) and phloem (outside), and cork cambium replaces the epidermis with bark. In addition to growing cell division, plants can grow by lengthening cells.  

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