852 



Rotation vs. continuous croppimi. — Tbe yields rturing 4 years (1888-91) 

 are tabulated from plats on which coutinnrtus cro]>]>in{r of corn has 

 been compared with rotation of tliat crop with j^^rass and clover. No 

 fertilizers have been applied. The average results show a gain of 3 

 bushels of corn ])er acre from rotation. For lack of fertilizers the 

 yields under both systems have steadily declined. 



Effect <\f' previous mouiirinf/. — '-In 18s;{ and 1SS4 fresh horse manure, 

 gas lime, and superphosphate were applied separately to certain jilats 

 on which corn had been grown every year since 1S71). The anuuints 

 ap]»lic(l ])cr acre in the 2 years w«'re, horse manure 09 two-horse h»a<ls; 

 gas lime and superphosphate 50(1 ]i<»unds each. Since the tirst applica- 

 tion of fertilizers and manure, in the sjuing of 1883, nine crops of corn 

 have been grown." Tlie results, as summarized, show that with gas lime 

 and supei phosphate, ri'spectively. there has been an a\erage (lecrease 

 of 0.44 and 1.70 bushels per acre in the yiehl of emn, but that the horse 

 manure has given an average increase of IL'.OI bushels. In 1S91 the 

 plats on which the horse manure had been ai)plied yielded nearly 9 

 bushels more than the unmanured i)lats. 



Full rs.ptirtinl iipplietitionsof fertilizers. — As indicated l»y the average 

 yields of corn during li years in an exjierimentin which full an<l partial 

 aj)plicatinns of feililizers and horse manun* w<'re compared with no 

 manure, anuuints of either conimercial fertihzers oi- nuniure sujtplying 

 about two thirds as mnch nitro-eii. pliosjihoiic acid, and potash as a 

 full crojt (."((( bushels jx'r acre) would re(|uire, will give fully as good 

 results as a lull application. ]\lanure gave larger yields than commer- 

 (•ial fertilizers. 



I'est nf rarietirs. — A table gives the date of ripeiiiug. yield of corn 

 and stalks, and percentages of ears, shelled corn, shriiikag*' in curing, 

 aiul barren and smutt«'il stalks for JL' \ arid ies grown at the station dur 

 ing from L* to "> years. 



Tin- tiililf .-liciws ( 1 ) .1 r;niyi' of 'JX djivs in tin- tiinr iif ri]>i'iiiii;j; (L') a raii<i»'. in 

 yield i>ir an*-, of iirarly !<."> luisln-Ks of <(irii aixl aliiiuNt 7<H) jxiiimls uf stalks; (3) a 

 raii>;»' of rroin 27.5 to riL'..% jut wut in tin- ]n<>|Hirti<>ii <>l rais t<> 100 pnumls of stalks 

 and ears; (I) a ditlVn-nre of nearly 4 jut (••■lit in tin- |in>j)ortioii ot slu-lW-d torn to 

 W('i;ilit of ears; (.">) a marked ranye in tlie anionnf of shiiiika;^! — from '.^.'2 to 2;< per 

 cent; (fi) striking diH'erences in the jier cent of snmltrd stalks, the ran^i' Ixin;; from 

 fito'-'t jier cent; (l) very great differences in the jier cent of smutted sliilUs lliit did 

 lint imimIiicc cars. Ilie range lieiiig finin notliini; to .Mi per cent. 



SU(iAu hi-:i-:t culture in Indiana, H. A. Huston, M. A. (pp. 

 44-r>3, i»l;ite 1). — A report on expcrinu'iits in growing sugar beets in 

 Indiitua, in contintmtion of those recorded in bulletin No. 31 of the sta- 

 tion (see I''\i»erinient Station Kecord. vol. II, j>. 03.">). Tabulated data 

 are given showing the results of ;inalyses and the conditions ofculiure 

 for 05 samples grown by .!!• jiersons in diHerent parts of Imliana and 

 for<»(; s;imples grown at the stalicui. Of the beets grown ;it thestatitin 

 41 samples gave over lli per cent of sugar in the Jtiice, the highest 

 being l.").l per cent; of those grown elsewhere, 41 gave over I- jter 



