Specialized for strongly acidic soils, new natural growth-type greening method "Soil Bacteria Strongly Acidic Countermeasure Method."

basic information

**Background and Development of Soil Bacteria Strong Acidic Countermeasure Methods** The soils in Japan, which experience high precipitation, are prone to acidification due to the leaching of basic substances, resulting in a predominance of acidic or weakly acidic soils. Among these, podzols and volcanic or marine acidic sulfate soils, as well as areas like "bota-yama," exhibit such strong acidity (pH below 3.0) that the growth of greening plants becomes difficult. In such strongly acidic soils, the absorption of essential nutrients is significantly restricted due to factors such as inhibition of root elongation, damage to cell membranes, and phosphorus deficiency. **Vegetation Damage Caused by Strongly Acidic Soils** When vegetation works are conducted on slopes of strongly acidic soils (pH below 3), poor vegetation growth occurs over time, and under certain conditions, phenomena such as death shortly after germination can be observed. This is attributed to the harmful effects of hydrogen ions themselves, excessive damage from aluminum and manganese, deficiencies in phosphorus, bases, and other trace elements, as well as poor nitrification and nitrogen fixation processes.

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【Purpose】 Slopes containing vegetation inhibiting factors, including strongly acidic soil (pH ≤ 3) 【Achievements】 Akita Prefecture, Iizuka City in Fukuoka Prefecture, etc.