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February 25, 1970 Wiliia;a il. iiroolcs. III Hendocino County Dircctcr F. rrs ,

Wlllian E. ^.artin Extension Soils S^^cciriXict rrost Faria:

Dear iiili:

Soine tir..c c-zo ycu fcji-rcriieug irt yo;:.r .-...nu;-: . z;..-.ct . v a t c 1 ^ r o-. . fro:-, ti.e sul)cloviir fertilization arq-^Lirit-cuaa c^^ric^i ou;: on t.iCi /roct. fan- r.::.../ ^ixi:.., , and Larvestcd in '- y oc 17C5» I l..-vo loci:*-:.: over tais v.-iciv -.-ith co:..•-.dei XTxtcrcct, -r.ij \'culJ rj:i.>a c-irtaiu •:>o±iiC3 -..c^•,.r..'.in<> ycuv: :.;;?:MTVOV/ r^cu. c r T f , it x . ' O w l i ciopdr tht .t you U.ive her^:: rCour tj L.-u'^o co:.-%ri: ir.<- .'il.- 'c a f. :1 ill tfu. „ you v;era coi,;p.Tri-;: ; niU'r;,sr .ilc-r.o /phcrun alcr r-.x'i . : 3 ' . -Jnc^ n-^ riiG-fi. iijur trc.-..;:ir.c ut* it i . tv./;-.; -chat tL-.': i-.-'ilTvii- iu fac cor','in.;Lj. • u car.r /tv: ^..y^-..-, and provi^loJ CO G per i-cr-- ..-l.iliit uho L alor.e w;^; iroi; c-l..:;-: i\tal 1:.-.'.1 ';;ccd over your ;inaiysi;> cf vuri.iiico, a copy of :.C::-ch v xtii :y scrate.'..•>•; i-; r.t-':.chci. 1 believo. iii th.7 you hav« yroccc'i^iv; .:G;;rcctiy, exce.-;.

fuc*: : at yoxi lookc^l up tt'.« v;*rozi F Vs„Iue;„ " i : niiicanc:. Voi: v,;:.oi vaiw..... „,... 6 a. .. 2 de-.:rau.? of Zrei^cciJ^ reJpoctivaly, rutltar thau for C- <i.-...l 3.

• I •. . ; t U c t you r.nvc calcixlated »in Liii/ cu.tl C:!...rcuftcr attor^ted to- ur.e : ,': Tar-.;-:c, or Go:;;ething liko i t , to det>»r-. ir.e v;'V;lc';v tro.aur,.;=-nC3 cifier ...v,"/, ; .:;h

ot-.c*' • ij5r:lficantiy*

X ..iiai u'i^a ..:lT-iiar tr^ t i i : i t ' - - . - o'i-or -ri^;, cini ^;ct a qulv:<:» thorouyh Ic:.-.. .\ Liwtlc •ii,ici I ^vill iio\.;- h iiiLcv:. t>;. p, :: ., on to ycu* it not .t*';. .• z

" V „ . .. .,hc ...uiji^lv. ra.nf^c test on f^icto.: ...r;i iu vhicli tl a lr.-:vL..:. ar :;. c...;-.....? . . " . J . - . y„i i otc .frov: your data: t/:at tl:C iv.cr->..-:.r>© fron S v.'.-\ II- .I -•Oi-.nds, • i - : . c r - T v o r . pho:.vhoru:-; was i- -'iV, aac. t-i-i -vxrei^-ic fror.; boti i\i -;i;;v;ie . . . . io--

: .-s 2137, i.-.is -.voulct lead orie to j.-pect that I' and G are iroriinf • .IT* i i;;.' .. taller, youj v'ata on the attached shaot -.d have calculated t!;cr e.ff and -> <iidividL.ally, aud se;:ar,LiLo... v>ut tha :i.niividual degroa:i of fr< . -.;oe c

uith r aiiti d. IJlicri ;c -.Vo t'aic, you can sc-a tr.at tiia average effect oi I :.i • .?ica-it (aii;.Oot UX'-rhly ^I^-nifica^.t - i u i an d value cf 1 2 0 9 ) . Tlie j.v-.-\-if.e ;d:7i-:ci :.: S, which you r.;isat.:d in your aaajyais, is .-i.-nxf leant at the 3 r rcai.u leva I wlta J..--. i v . . . .^ow of 734> while cUo iiiterac-w.i.o;: of - aad S i- uov/hare iii^ificzat.

v c ^ d point ouu, i>.i.ii that in r";'.V.ity, ac ;,..ia oita, you iiad a .'ual deficiency with _xch factor *.--.-;r! aly^ost ••:;aadc-.v:tiy, and uiii. the bcnefitc of a-.id b addi-V-.a vitli no Jif-aificav.c iTcaraction. .1 './ould suap^^ct thnt -.'o. have J. loc cf Iccaj.^ vis v.l.jro this talves place. _ 'C2. avivaata'^a of \iaiv»f; o io,ctor. .i.l i;., <::..'-•. can look at ti.a affvcts of ci^ch n?rtriant vhcr. applied alone, or applied • • :..;a-ti ..-ith tile other nutrlenc,

r-:.;: -..he Frost.ta:;t it i.; aow obvious th.-; '---7. ? ani S aa nr.trienta were '..:i... n:ivc, a;, t -Xut fartiliaitioa at t':ii> :. ite .;.oul.i 1. . :,iudo hcta autrianta. I av; d j-r' .:.iln^ a CO ay of your letter to Toi;i Li a tie . r.r «.is ohscrvation and to ^xve din :. a..:.i>ca to call .'.e if I have potter* off base a:-.-..n.

-2- rcbruary 2 5 , iS70

I an raal sorry, 2)111, that I citl not pick up the aanplcs of fresh naterial fron tiic lyaiirietar that you or GGmobody a;->parently brou:;ht up to the ziotel, 1 hnc\vr that I uas suppoacd to briaj scc.a sarplaa bad: frcui D r . Jonc3, and I thou^^jt that the soil san:i>les v?hich I'etc very carefully put in ILV car were tlie load to cotia to Davis.

I sV.all look for^f.ard to aceina you at the innoculatica neetins that Joia la holding at Hopland ia Itsrch,

Sincerely j

w?d:/bp

cc: Toa Little

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