| Show of crops tho alil or rotation 0 crops bisca upon the natural necessities ol 01 alie soil thu anoro wo know of it alib more 0 appreciate these and notwithstanding that wo linc lin c grent progress in thu science abul practice of fertilizing yet this has not enabled us to overcome them for although wo may know with great exactness what abs tbs soil contains and hat tho special crops m ly need and cin if wo fisli diio to the soil a great abundance of every needed yet we lind that our crops too frequently repeated bacomo diseased and are so preyed upon by a to fail and dwindle and perish what is alie reason liebig a thoughtful anil studious but cautious investigator had the belief that plants threw out from their roots agomo matter kiich poisoned thu soil so far as those aan plants wore concerned but which acceptable nutriment for others of a character and hereupon ho based his explanation ol 01 alie advantages alic farmer pained from tho rotation or crops ho lived to discover that even iT othis true it was aholo truth and that alio most important fact in this regard was that plants aart erad very nini h in their exhaustive hau stive upon the soil thil choat drew ono clement in creator inc asuro than oats or lalev la lev and eliat grass and clover drew still other elements and chilo ono chop was taking its special food from the soil the soil was recovering by tho natural process of dissolution its normal supply af those which had previously been brawn from it further discoveries by dioro recent have led us to anoro firmly in this behavior of plants until wn sali shed of the truth of tho theory upon which known facts in regard to alio llio rotation of crops were explained this was an enormous step in ad canca for it acil to our of special by we are enabled to produce special crops without alio costly supply of every clement of plant food existing in a very fertile soil and by the provision of ono only thus wo hivo been abla to row birc crops of by alie use of of lime or by alie uso of nitrogenous also to baiso heavy crops of roots bi the aid of phosphate of limo and clover by sul of limu after ft while wo mot ft decided obstacle in our advance which so to speak brought us up in our progress willi a round turn for wo found aliat alic crops became in with parasites of all kind somo in alie form 0 pests which consumed them bodily and others which m sto piously invaded their internal organ calion and what we termed diseases myriads of insects descended upon tho chopi and disorders blighted and withered thorn and these arc precisely alio llio wo are now called upon to meet and overcome it ii i i a great advantage to alio farmer or dairyman dairy maa or fruit grower to condou libin alf to some special crops being obliged to report to ii rotation of other crops which aro bot suitable to hiis circumstances and which disturb hiis most business for instance thu dairyman linds ho can cagily feed one cow on a single acre of ground if lie can grow ryo and corn lodder alternately with anil ho can grow large clopto supply all alio coalso fodder willi such croli t as will liim lo 10 purchase ane grain food which lio cannot grow so alic ip y as it can bo crown in other where atio soil id bettor adapted for grain crowing hut atter a few years lie linds crops piira silK diseases disturb iiii calculations and liia ar aly is ibis ho asks in surprise Is alio theory af iu rc gird to tho injury of aliu soil by diore in own oil by alio llio loois of plants after all a arno one and is after nil a certain rotation of crops if so thou special cultures must bo under laicu a certain caution ind ono cannot put iiii farm any binelo crop for fany useful length ot timo this dilli culty ha to us utter several years con groth of ryu anil corn with liberal special and the boco u infested smut aa to bo almost useless tor feeding and aliu same result and others similar to oilier growers of corn tor ti panch and pear to as well al to chont la stuwart w Y y |
