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10 > Image 10 of Kentucky farm and home science, vol. 3 No. 1 winter 1957

Part of Kentucky Agricultural Experiment Station

. . . li B s _ The importance of propel. the foregoing e>tper1ment,'ph0spho1us and potas W rc f ,1, , , h . more effective at the time of seeding than when ern lzauon IS S Own In applied the following spring, even when a light La starter application was used. Results from other if experiments throughout the state also indicate that i an adequate supply of readily available phosphorus a i P t 7 I l 1 is particularly important in establishing a good stand n n 3-S S and that the available phosphorus in the soil should be maintained by frequent topdressings. 4 { BY E- C- DOLL An ample supply of potassium not only is needed for high production but is absolutely essential if a l . I _ _ . . 1 _ )_ . _ .... . .r" Oi the =lY 20 ll1<> MTM Ul KUtkY faYm$> desirable proportion of legumes is to be maintained. 4 the 1954 agricultural census figures indicate that more Fignio 2 snows din oiioots of increasing tho iatos of `7 . _ H than 8 lmlllml HUGS WMV used SOICIY for Pa$tuY potash fertilization on the yield of herbage and on While more than half of this pastured land (58 per- tlio i-oinovol of nomssiinn This Work was done in g; z cent) was suitable for cropping, more acres of crop- Mnlilonboig oonnty on Ei soil nntni-olly very dofioiont ki.! lands were used o11ly for pasture than for harvested in notnssinin Tlio Pasture is ii niixtin-C of oiCli3_i.d_ crops. liesults obtained at the soil testing laboratories gi-oss, tall fosono, {incl Lndino olovon Yield inoi-oasos ,; Y o throughout the state indicate that many Kentucky Woi-o obtainod for as mllch as T()() pounds poi noio Y p lv __' ..i .i_ i _ .. . *-4 pastmts nttd additional limestone, phosphorus, and of notosli (Kggly but no additional inoioasos Woio potash for an efficient level of production. obtoinod wlion 2()() pounds poi noio was nppliod on The importance ol proper fertilization in establish- However, part of the additional potash was removed 6 ing a pasture was shown in an experiment in Simpson by tlio oi-on This is gi-apliionlly illustrated in Fig gh ` county. A imxtuie consisting ol oichaidgrass, tall Since more potassium may be removed by the crop a lescue, and l.athno clover was seeded in late ALlgl1St, than is actually required for optimum yields and _ _. A l$)55, on a soil which tested low in both pl10Spl`0fUS since potassium may at times be subject to loss [FU" and potash. x\ very poor stand \VzlS Ol)tUlU(l Wl1I through leaching, annual topdressings seem to be }L< lI() f(l`flllZ(l' \V2lS Lll)l)ll((l i.. ri the ) ~ ~~ ~~#~ ln this experiment, nitrogen fertilization had prac- .\dequate phosphorus and potash must be avail- tically no effect upon either the yield or nitrogen iq . able if a thick, vigorous stand is to be obtained. In content of the herbage. _A U *4 p _ i_ [iii. ii i..ii._i ~ _ :.i;g;g-.ttxt;rgs i: i. ,i:;. ` ar ~.> ... li 'g _ "'.T ' "."" Eg}?$%f~5iiii2?it~:iiis ii r - on the estabhsluncnt ol pas- g*,_ig__s_ li ;&_\i;ii;ii_ .* ?. 2** 14 , Ti ture in Simpson (Zounty. Ken- K i {f", 4%*fZ; ,,,,.k,._ Th,. nin, on nn. isn . .' V .Y';.s ~ T*'?" ? t; K .... U . .. . . ~J%~ { .-- i.* #i.:*i#&=e.. tf#.$?iiii*.s1t:,<$,t); \ , `ii ii `%l' `~gi { I ( S r k _ ,.i>,,.; - .i , v it -, t. pounds ol potash. The plot fs- il$iz"% ~" _' A on right was not fertilized. [{$id'} i$i;iij;;?;iJ; _ .`f`i." : f -` fl " $i?i? f, _ f*"` *f lifi ;;* + ii$}*iia`, l,z,;.n ,., ..,;i, ,_,` ;,= nite. - . `~.f}.?%j;2"$$.<.4&s .?.`f" ii fri?-?5,." ml I , L $_v, i Q I , };:` U ,i _ i ~ ***, i;_a.;-yi.i2__ sg _ tpl ik; -)_V;4 .,e` _* . ,,{*f}_ .. a- V. r~~,$ .. .,,,; fl. PY ` I ifs? Y ~=l$g** ? ,~=..._r`. .v.. i ` + " * " ` - . .*-5 . z f `> ."Z`iw" ,.~4:I ~ Riiii lf ?\`{`*$g\i_i:?Q{+* `i" xii" . ` 4 7;* }i.i ~ "* => .">t`*. ~ ~_ x ,, _ ':`:;\;_ s lp .! l_i ;> ' _* ,._' ;:\_*/Wag FQ ; -*2. , r lr, A **5%% l " ` ` ii$ *f?i?5 ""m~* QZ~~rY`ft:` Vi *" VET , `i.< ~*t `i,s" " ry? < W ." ,. ~ . ;= ?` 'U 6 " ; rfa ss. "; s_}" *7; ; ' ~ ein =~ .` .. . . a. ten X. .. ; .; ..e4 ,. i$. ~ * "F fi.