Effect of soil pH on plant growth
pH is one important parameter for plant nutrition. Plant nutrient uptake depends on accurate adjustment of the pH of the soil or substrate: too low a pH prevents the uptake of large amounts of elements; too high a pH prevents the uptake of trace elements, such as iron deficiency and loss of green. Therefore, fast and reliable pH measurement is an integral part of professional horticulture and agricultural production. We chose soil pH meter to do the test and made an analysis of the effect of pH value on the plant growth process and its products.
The effect of pH on plants is multifaceted and is broadly divided into the effect on the external environment and the effect on the plant itself. PH is within the right range for plants to substantially absorb nutrients from the soil, enhance the strength of the plant stalks and improve yields.
The transformation of organic nutrients in the soil takes place with the participation of microorganisms (microorganisms secrete enzymes that make organic matter break down), and soil acidity or alkalinity has an effect on microbial growth. Acidic or alkaline environments also cause the proteins in the protoplasmic layer of plant root cells to be positively or negatively charged and to be attracted or repelled by the absorbed mineral ions.
Soil acidity has an effect on soil structuredness. In acidic soil, the concentration of hydrogen ions is large, and it is easy to replace the calcium ions in the colloid out of leaching, so acidic soil is easy to slab. Alkaline soils contain a large number of replacement sodium ions and hydroxide ions, which make the soil particles disperse and dry out, resulting in poor structural properties of alkaline soils. The solubility of cationic minerals is reduced, thus affecting absorption.
