| Show FERTILITY 4 scarcely any soil can materials furn durni L required without althos outside assist assignee D by y J p V thero there Is an important tilita in need tn for fe any orchard that that Is I 1 and acely producing and er grol growing ng the extent of this thia need can be achi N ly ed apar app roil chemically by determining themi ih arago composition ot at leaves apple app 0 and fruit and by these figures agures gures to what add aidla jy ered good annual may be consil co abel products am amounts ot of thes th askin the total plant food draft of 0 ture and active a me ina orchard than that la is greatt gre m whid of a 25 basliel t crop of w sheab or in every important 4 phosphorus constituent nt axce ws 1 it is 18 practically in inevitable evitable there therel fore that sooner or later the j the will bo be reduced or in off seasons then 1 l be developed in any productive cine chard because of a lack of oi ical plant food notwithstanding thi trees ate are usually able to mainwal maintal ma maln intal 11 themselves much bett better or and lodger lori gerl V 3 than wheat this is probably largely my because of their much longer ino season of root activity thet their r more beg natural I 1 detri demands ands the annual return of most moier eta of the plant food in their leaves anji aach or their ability to curtail production firs for or one or more seasons when conditions condition 1 wb become unfavorable find however it li Is quito quite evident that very important at a mounts amounts of plant food are annually i bec removed wo by an apple orchard scarcely S any soll soil can furnish all these mate rials indefinitely in the amounts and be times required and unless proper as ai WI sl si stance Is rendered there must come COB es a time when production Is materially he reduced unless these elements are returned bc to the soil part of tho the ra orchards product requires rera le comparatively small amo lint bi of the important elements this ti A notably true oi of the wood even when the annual production of mature trees tree L Is considered this largely accounts account d for the fact that young trees are much b less likely to make a profitable re sponge to fertilizer applications than those of bearing age the younger I 1 ar tho the unfertilized trees on the left have averaged bushels bushel 11 per acre for fop four years yearn while those on the th right only in the addition of manure have averaged buon eta els trees oten often respond very well to manure or any satisfactory mulch most orchard soils are sufficiently supplied with potash in available forms and the chief shortages seen seem to occur in the nitrogen and phosphates this Is the case notwithstanding the fact that the latter materials are actually required la in considerably sider ably smaller amounts |
