Show need for deep plowing land cari can be made rich i in the plowed soil by the addition of manure and green immature clovers plowed under orby plowing under any of the peas and beans but land can be made rich with manure and these crops only as deep as they are plowed under when the surface soil Is made rich the roots of plants form largely in the plowed or surface soil sell and roots are shallow t and weak when roots are shallow and weak the crops are likely to suffer from drought when the surface soil becomes dry and the crop Is reduced in size and quality because full maturity Is not ren reached ched legume crops grown and removed from the land are likely to leave the soil poorer than before they were grown except for a slight temporary stimulation |