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_~ <br />CO-CPA-1 <br />4/82 <br />(140-12-11) <br />CAPABILITY GROUPS OT SOIIS <br />~, Capability claealflcntlon Sa tht grouping of soils to ahoy, Sn a general vay, <br />their eultaDility for most kinds of farming. It 1a a practical elasaffication <br />Daaed on 11m1tatlona of tht soils, the risk of damage when they are used, and <br />the vay they respond to treatment. The moils are claeeifled •ccording to <br />degree sad klod of permanent 1Smitntion, but vithout consideration of mayor <br />and generally expensive landforning that would change the elope, depth, or <br />other cheractetls~ica of the soils; and vithout consideration of posalDle'~but <br />unlikely aaJor reclamation pro~ecta. <br />Roman numeral^ are used to shoe the 4 brosd Capability Clasaea end letters <br />follow the elaa^ numeral to indicate the principal problem or hazard. Claeaes <br />and auD-Clan ea used are •s follows: <br />Clas• I - Fev or no 11m1tatlons that restrict choice of crops or require <br />eonaervation measures. <br />Class II.-~[ome 11m1tetlons that reduce the choice of crops or requfre <br />s+oderate coneervatlon measures. <br />Class III - Severe 1lmitntlons that reduce choice of crops or require <br />special coneervatlon practices or both. <br />Claaa IY - Yery severe 1lmitetlons that restrict the choice of crops, requfre <br />very easeful u-nnReaent, or both. <br />Claaa Y - Not suited for cultlvatlon but has tev or no haxasds Then used for <br />pasture, range, woodland or wildlife. " <br />Claaa Y1 - Not suited [or cultlvatlon. Severe 11mltationa. Suited for rsnge, <br />pasture, woodland or vildllfe with careful management and needed coneervatlon <br />practises. <br />Clans YII - Not ^uited for cultlvatlon. Very severe limltatlona. Suited for <br />range, woodland or vildllfe uses !f carefully managed. Usually cannot apply <br />physical practices such as pitting, tLrroving, seeding, etc. <br />Class VIII - Ilot suited for cultlvatlon, ran Re, pasture or woodland. ,Suited <br />only for recreation, vildllfe, water supply or esthetic purposes. <br />e - T~oelon Dy wind or voter 1^ the ma,Jor problem. <br />M - 1•]cceselve voter ouch ae wetness, overflow, or high water Lable. <br />s - Ma,Jor problem Ss in the moll. It nay be too shallow, too heavy, stony, <br />lov'in fertility, salty, alkaline or have low moisture capacity. <br />C - Cliaate Sa the mayor hazard. Growing season may De very short, there fa <br />a shortage of rainfall or Doth. <br />4]aaplea: <br />IIIe - Cl ass III land where erosion !• the mayor hnx ord. <br />IVC - Class IV land uhere the climate !s the mJor problem. <br />