VOLCANIC ASH from California cinder cone. 3 lb  FREE SHIPPING

Description

VOLCANIC ASH from California cinder cone. 3 lb  FREE SHIPPING. Condition is New. Shipped with USPS Priority Mail.
Various kinds of soils can be formed fromvolcanic ash depending on the individual set of soil forming factors at differentsites.
Among these soils, Andisols orAndosols show unique properties mostly due to abundant noncrystalline materialssuch as allophone, imogolite,
Al-humuscomplexes, ferrihydrite and so on.
Highly porous structures made of aggregated noncrystalline Andisolmaterials have a light and fluffy nature, accommodation large amounts of bothplan-available and hygroscopic water.
They show many other unique physical properties different from othersoils.
Moreover Andisols have uniquechemical properties, including aluminum-rich elemental composition, largeamount of humus accumulation in A horizons, variable charge characteristics,high phosphate retention capacity, high affinity for multi-valent cations, highKCl-extractable and water-soluble Al in nonallophanic Andisols at an acidic toweakly acidic pH range, and so on.
Finally, topics related to biological activity in volcanic ash soils arediscussed regarding P supply from apatite and K supply from biotite for cropsin fresh volcanic ash, effect of KCl-extractable and water-soluble Al onsoil-borne diseases, absorption characteristics for viruses on Andisols and Ptropistic root growth of Brassica plants in P-deficient Andisols. By Masami NaNzyo,