Show crops classified i by effect on soil national farm program lists them all in three groups by 1 R SIMONS director of extension U a 8 nt of agriculture service crops are classified in ID three ways to determine bases and rates of payment under the national oat lonal soil conservation program these are soil declet ing soll soil conserving and soll soil building crops classified ns its soll soil depleting are the crops that take plant food out of the soil or leave the land find exposed to severe erosion the soil conserving crops do not necessarily add fertility to the land but hold the soil in place to maintain plant food in the soil the soli soil building crops are those which when used in certain ways as when plowed under us its green manure definitely add to the fertility of the soil furthermore says the united states department ff it agriculture two classes of pai payments ments are provided the first Is called a soil conserving or diversion payment and Is s made for substituting soil conserving and soll crops on sull suil base acres the maximum acreage on which this payment Is made Is 15 per cent of the soil sall depleting babe acreage on a farm in new boik state stale the rate of payment for the lie entire country Is 10 an acre but varies according to the productivity of the land it way may be slightly larger or slightly less in parts of new york state the second type of payment Is called a soil building one and Is made for planting soil building crops on land which has produced at t least one harvested crop other than wild hay since january 1 1910 or for approved soll soil building bull ding practices on crop land or pasture these payments will be made at rates and tor for practices recommended by the state agricultural conservation committee and approved by the secretary of agriculture |