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CO-CPA-1 6/89 ..180-12-11) CAPAL'•ILITY GI:QUI'S QF Sr_~ILS Capability classification is grouping i~f soils to show in a general way, them suitability for most kinds of fanning. It is a practical classifcation based limil:ation5 of the soil, the ris1: of damage when they arc used and the way the respond to treatment. The soils are classified according to degree and kind permanent limitation, but with~~ut consideration of major and general er.pensivr landforming that would change the slope, depth, or other characteristics of th soils; and without condideration of possible L~u1: unlikely major recrmation projects. Foman umerals are used to show the 3 broad Capability Classes and letters fol. the class numeral to indicataed the principal problem or hazard. Classes and sub-classes used are as follows: Class I - Few or no limitations that restrict choice of crops or require conservation measures. Class II - Some limitations that reduce the ct~vice of crops or require modera conservation measures. Class III - Severe limitations that reduce choice of crops or require special conservation practices or both. lass IV - Very severe limitation that restrict the choic of crops. require vc careful management, or both. Class V - Not suited for cultivation but has few or ne hazards when used for pasuture, range, woodland or wildlife. Class VI - Not suited for cultivation. Very severe limitations. Suited for range, pasture, woodland or wildlife with careful management and needed c.onseravtien practices. Class VII - Not suited for cultivation. very severe limitations. Suited for range, woodland or wildlife use if carefully managed. Usually cannot apply physical practices such a5 pitting, furrowing seeding, etc. Cass VIII - Not suited far cultivation, range, pasture or woodland. Suited on for recreation, wildlife, water supply esthetic purposses. e - Erosion by wind or water is the major problcrn w - Er:cessive water such as wetness, overflow or high water table. s - Major problem is in the soil. It may be to shallow, too heavy, stony, low fertility, salty, alkaline or have low moisture capacity. c - Climate is the major hazard. Growing season may be very short, they is a shortage of rainfall or both. ~aamples: ~ IIIe - Class III land where erosion is the major hazard. IVc - Class IV land where the climate is the major problcrn.