FERTILIZER TESTED

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00039R000200020040-4
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 6
• Document Creation Date: December 22, 2016
• Document Release Date: May 15, 2012
• Sequence Number: 40
• Publication Date: May 15, 1952
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
'0X1-HUM
FertiJ izer Tested.
tnichesko Dclo, Sofia, 17 Se
Ratio
Declassified in Part - Sanitized Copy Aproved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
50X1 -HUM
 1
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
I~}Eit'~.iLiZB r ;S.L1.
' ~tl
~
_u S.u
,,,
Sofia, Rnbotnichesko Delo, 1'1 Sep 1951
,3.
A new me hod of phospYlate fertilization w]' i.ch achieves high
yield-increase with smcll quantities of f'ertil'izer has been
deveior,ed t r1d tested in recent yeF'rs st )Cien~ if 1c rese^rch a.n; Li'
tutes end on cooS~..eriltive and state farms in tae IJSSR. Five to 10
kilor a:ma oS Su perphosphE to used accordillf.' to this method produces
the came yield-increases as 20 to 30 'kilogra~rls of S1Jr}erl~:b,oaphate
used by the old me i;hod of fertilizat, ion.
1}e rievq metJlod, which bec nee kfOVrn a s tt sowinf~-tirne row-
f'ertilizaLion with rranu1F ted sperpl1oshate," is aLaracteri2,ed by
a. 1:rrel:i:minary rxsnutation of a ~nb:ture of ordinary powdered super-
pl.losphate and well-decomposed organic fertilizer.. Subsequently, a
1:' L
rnixtuire of seeds and f'ert'r1.1zer is sown frOlT1 a multiple sowing
ula chine.
It. h ES been established that in the ir st year plants
can use only &)OUt 20 to 25 precent of i'ertilizer spread by the 'old
rne-bho d, vrbile X30 to 90 percent of granulated superphosphate i.ntrodu~
ced into the soil by rows and at the time of sowing roes into the
crops.
Uor t~vo ;Jeans this method of fertilizatiof. has been the
subject of ' experirnentEtion in. the fields of the l,S-tala.n" Apr.cul-
tLrral. . a.rineccr'in=' Station (TZ) near Soria, and. in t:b~ t, period
~
valuable data have been obtained on its urert edvantaEes over the
d of dispersed fertilizat:ian v4yith powdered. sup(~rpha5pha.i ~,
old me tho 1
as well. as on the ;:repa.rE~tion of the r~nulated f'er.tilizer.
results were obtained at the :above -mentioned
fhe following
~ r~.?_.a
station from field tests cornparift the new and the old i.`ertliza.Lstation ~. fz
me t11 od s
?k1
S
50X1-HUM
.
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
 Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
Disp rsion fertil.izFtiOfl Vtlth 25 ki1ora1l1$ o'
powdered superphosphate per acre
gri}10 ki1.OEr'rms of ranulated.fer 1,i1izer per
acre, under the new method
2.10
'' `j'l1e ~lvera e increA,se in yield per ki1oF.:r~ in of f?crti.l..izer used
is 3.6 :C `or ti' e old me tl~od c~nd lO.1 f'or the new nietl"god.
~i At the l:)rlce of 24 leva per 1~iio :r&ml oa' ; ur~erphosphte, the
fertilizer repa;;s, in the :[ irst cSe,
the second case, 242 levy per kUogram.
According to these f'iF'ureS
levy ;:r r kilorin, arid in
by the nev~ method will t'erti.li7e three t,i.mes s lame in area, all
of LOf f 1'OdLtciO1.1 a c.;C'LOUT'S bi.ri
V T'` ` i l n , Ur s e~ i'er n!~ ~ Closely . re c with.
?t,he;..e ,Su..Ltf3 Ti, i; Idlorlti1 oS ori1..nr ry iowc Bred Sir. r .
in -vT.. v oi.? t1-e li.m;i..ted
quanti.t.i.es of ,surerphoshna.te avilt7ble, wLe ~t muss be fertilized
exclusively by the now rilethod, aril th+t to waste ferti:tt.izer 'ay iisin
the old i yet}~:od is absolutely unjustifiable in the cultivLion of
this ITJtal crop,
to rave an -Llici' :l. yield 0? 3o 35 k ?l,lUi.'rcl ia, PS Fz('',:1.nst
rra.niJLTl ! ?Led. }Jug os:)hJ? LeC
{
Other experiments carried out .... s ~veE.r shov:~ed the correct
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
50X1 -HUM
 Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
50X1-HUM
proportions of or -,anie ,Veit, t1izex to fau1:ei1 . $ Yi, , ,
correct b'or tLe .r;nu]es, etc. On the basis of this reseEtrcb, we ,
'G el ' ti.1izalion o:~~ whoa 't be carried out as i'oilows~ y
recommend thet ..~e f
rl'L,e prep6r al, on of the granulated super~,.o$PhE tC is cr111ed
out rjn'le nE3Cessr' ingred er1"ts are dri/,
by '}a ,E' ~:E:~ri~lel S '~,}~C11nS ,~Erl.'VP,? S . G
we ii decornposec? or Exilic fertilizer (dunr ) and ' ordinary super"
p11o ~sph to .
crumbled, rand passed throut,:h a sieve with openlna of about 1 centi~
nret,er, The superphosphate is passed ti rou :h a sieve with openings
of 2 to 5 n~illimeters, Equal portions by weight of these sifted
substances are then rni.xed. rj:'1ie mixing is carried out on an
ordinary cement or wood floor by means of a' shovel, iron rake,
etc, :Next the mixture is spread out in layers cif to , centi-
meter and soaked with 20 to 30 percent b~, v+veiht of water,
:f, or tv.1- :~.,'ch a waterin{, can is to 1e used. The addition of the water
should be done evenly on succcss1ve batches of t}e mixture, and the
latter well. mixed vrjritah, rakes
nixtre is treted with ore water. It is recommended that
too-dry
the let be },:L'tiall`a' or totally repLEiced by fertilizer liquid if
yel.r
r ;os$1Ole,, in which ca,SE~ the :raanu.i~ ted orb:anic-mineral. fertilizer
4
will be even h i'ae:r f:rade,
~'stc,-ailed mixture additional dry n1< term1 must be added, while
Ina.~. 1
The addition of water should be discontinued when, dUI1nF the
The
mixing process, ?.ranule~ o.f' 3 to 7 millimeter. s in size appear.
mixture should fOWr feel rnoit, but not yi.e1 v.iater upon hein'
s1c uee zec l lfl tle pLy l.m of the he nd . If the t .:re coin try i.ns too mUCh
..,. the ?ranules formed will be ~,do 1ic , while if insufficient
vr~tor has been B.dded, the rn.xture rei;aains powdery. To over-
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
 Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
The U1Qitoed , wei1mix~ed , + a?rl'L.~se ruIa'
r
't.a,on a, Cax~ ' ''?ed to 0Ulil}21F?'l~'l4Tl, miX(~X' a.:> i11. kO 1/5 CT)C,Y
.;a a
(a
with ino .~atefled fertiii.7' f(I IQ'tEd at 35 Lo 40 per
~? uU'j.~..y u~.1.oa.rn~r ~'p~~
ltlinlltO ? T111S 'l :7.111 , 1 c
l~l:l.aTll'~,G' ~u()r' 5 to 1.1.1
1
_) ' , c
C
ti: e oz x~'ol.l c ~; d. V l~ ~ J..LCA '~~ lC FS Q~~~dlI
O,
C cn b
'
os: the ~ ae judged by t~,e oil }:c 1 q sides U:~ the ~"CJI,:Li7, I"l.:,l?:' e .La1y,
n () ~ ~'.. :ll. i.1X'E; ~ xn T?C'LiCe ~ Conli?1etion
~l '~ riiu1aL.~.a
v
Q
~
rr~ 11flG l~
oa,di"1'Ur,1 't)"itL} ila.Xr,:C , Cprcad ou'h, in t1ha.n
the iertil.i Z01
I 'CCI to cir s prCr>.eI8.,, ?J in 11e -wl l,lnp
~'.I.i .
are vie11 1i1'd a y
,`..J;l.?1Ei i
,,
'~ t'i'!~i'U~~ i'n:~.~.L1f'11CC on ]aC ":1.C11d~; i~,~:'OCYI L}`1C;
Jr'~~'1C ~7"c~.l1U,~..C:! ;a C%'`~~''~ u a C,~G .
~'
0
o'Ln ; eL$ O d ?i)Ll FabOW tl'L2t c e ,;lo$
1 I
5
' a?'r:L1.1.~.~. ion is ? ~~o
tlha. net.. od o:t' . 4.
size :1QZ' r'T'~Ll~iU.'1,~3 USC:(~. 1.17
?i11.1 7_i11CeI s.
h'
??,.;, _ a o:{' f-iU.~~C:t'~~'i11~. la'x'C irly;E:'C1. ~;1~1_'~~1 the
..
q
~ )1.?~ l/ f.: 41 (.l , I. ~. direct Con-
,C I ll
'L seeds iminc:d~.~~,C).~ be :Ore C ,.o~i..~:' . J.
a. r.l 4aeve ~.' 7 .1.
r ?Le 1crt1J.:l-z r 1 oL' .pr'oio1iLe ,
,..
' ~^ '' 7r'lTt.l ` '1'!.G' ~l ts .
C1%j' 3 ) 9 'brie :l
u1 ;ei up
?~Yl wl.fii,~; r' od-? (;:1:'
.G ~Ql~;i-17E,
, 10 01 n r .1..izE~r 1.15a
" Y L i-
' n1' i, C. i?lX1,e ov,~i. 'r.. I.J1.
Lt
f `.
. ~~ -
L11 C
1, L1lhi~. Ul'iC, y 't,17.G a I ..
C :1..
~~('?""1'C'J. i;;1.:1 I roccdr ~ (:_ 1,. .; ?1 nrtrlw.~~,
if
J, nG; ' ddcCi to
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
In W3C
a 'Cl"1 :.otS '~~1~i .I? U ?ao Via.%e
Cl: v ~~~~ ~~ (}11 () `J
f,;Ib~~'E~'r''J.,CT?i 9
(Y r i) C
?,
 Declassified in Part-Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
of Vriie''l, ~aCL3Cl "O.iUS 10 J' i.1or: r > o: r.u1~ d F~uncrp}"iO~3p
c.e9 I:I BC!.jf('.. j>$ Jc ! :('oa' 26 i~:.i1of'rams o?'
?a:t ust b( ~c1ded L11t lh.i.i et od of ; ow.n;-L,iiric raw-
fertiiiz t1:i.on of Uvhe t F~ive ; b(~F$t I 3ULtS in tYie cherfO3(1T re gions
o i. 1art' Bern '3ui F,l:ia Ufa the pe -L3 oil in '.'hrace aici around Sofia,
Declassified in Part - Sanitized Copy Approved for Release 2012/05/15 : CIA-RDP82-00039R000200020040-4
50X1-HUM