摘要: Land managers with paddocks that are prone to waterlogging, poor crop or pasture emergence, gully erosion tunnel may be experiencing the effects of sodicity.Sodicity becomes a problem when there is sufficient sodium attached to clay in soil affect soil structure. These soils referred as sodic and often regarded as poorly structured difficult manage, are susceptible degradation such erosion. In Australia about 30% agricultural land is sodic. That five times area of land estimated be saline. Not all poorl y structured Land managers need distinguish between poorly stru tured non-sodic sodic as management differs for each situation.