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

Part of Kentucky Agricultural Experiment Station

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‘ · . · . . 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 K€Ut“°kY 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 oi·Cli3_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$)55, on a soil which tested low in both pl10Spl`¤0fUS since potassium may at times be subject to loss [FU" and potash. x\ very poor stand \VzlS Ol)tUlU€(l Wl1€I‘€ through leaching, annual topdressings seem to be ·}L·< lI() f(‘l`flllZ(‘l' \V2lS Lll)l)ll(‘(l i.. € ri the ) ~ ~~ ~~—#—~ ln this experiment, nitrogen fertilization had prac- .·\dequate phosphorus and potash must be avail- tically no effect upon either the yield or nitrogen iq . able if a thick, vigorous stand is to be obtained. In content of the herbage. _A U *4 p· _ i_ [iii. ii i..i·i·._i · ~ _ :·.·¤i·;g·;g-.ttxt—;·r»gs i: · i. ,i»:;. `· ar ~.> ‘.·.. li 'g _ "'.T’ °‘ ' ".""’“ Eg}?°$%f~‘5i¤iii2§—?i—t~: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..·¤ ’t»f#.$?i‘iii*.s1t:,<$,§t); \§ ,¤ `ii ii `§%l'¤ `~gi { I ( S r k _ ,—.»i>,,—.·; - .i , —v· it -, »t‘. · pounds ol potash. The plot fs- il¤$iz°"% €~" _' A on right was not fertilized. [{$i‘d'»}’¤’ i$§i·;iij;§;§?;iJ•¥®; _ .`f`i." : f -»` fl " $i?i? »f, _ f*‘°"`» *f lifi ;—»;»*· + £ii$}*i¢ia`,‘ 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~~r»·Y°`ft:»` Vi *" VET , ¤°`§i».§<¤»§ ~*t·· `i,s" " ry? < W ‘.·"° ‘ ,. ~ .· ;= ?` 'U “ 6 " ; rfa ss. ";· ’s_}¤‘—" *7; ; ' ~ ein =~·‘ .` .. ». . a. ten X. ·.. ; .¢; ..e»4 ,. i$. ·~» £* "F‘ fi.