Show tire practical conservation Ucal prime file twelve depth acre land land lind wry obvious twelve inch rain toll enough moisture mature 30 bushel crop borne already ground du ring hot during crop amount upon grow harrow pack air pick deal falls lone percentage windy windy andy might amount ILI week prevent prevent present rate whole lion might lost best borne loll loll 1011 moisture bound lost rainfall twenty RETAIN RETAIN ETAIN MOISTURE question conservation prime alto keep broken surface snow rain agricultural college tell us 45 ton water grow bushel wheat thirty question conservation pi soil excellent potato field semi arid region re ion excellent g rna process soil surface surface dust mulch moat practicable mean soil moisture surface point air law soil surface capillary large extent hence value surface numerous test shown frequent soil kept soil whore whore where call call carl seed hut germ water plant aid aid bid moisture orb bushel wheat crone given careful form another con prevent en ten rainfall thirteen thus moisture otherwise might escape air nu broken rain snow per double le service rainfall tn west where question moisture cone seven water where halve thirty tent ion whet |