Abstract
This experiment is investigate the relation between stability of soil aggregate and soil water content. A new soil conditiners (M) and usual soil conditioners (Krilium, Soilluck) were used, and the soil used was Kanto Loam.
An ability of these soil conditioners mearsured by means of Sediment Volume.
The sediment volume of the “M” soil conditioner was larger than that of other two soil conditioners.
Principally soil conditioners was added of solution at the rate of 0.1% and 0.4% by weight of 40g dry soil. then soil and soil conditioner was mixed.
The quantity of water to dessolve soil conditioner was about Plastic Limit of soil.
Water stable aggregate differece of each soil conditioner in the case of 0.1% and 0.4% tretment was shown, that is water stable aggregate in Krilium tretment was 60%-70% at 0.1% adding and more than 80% at 0.4% adding, that in “M” tretment was 50% and 60%-80%, and that in Soilluck tretment was 1/5-1/6 of former two soil conditioners.
The aggregate reformed was destroied at the water content less than 20% in 0.1% tretment and 28% water content in 0.4% tretment.
In the stability of aggregate, soil treted by the “M” soil conditioner was better than Krilium soil conditioner.
