BIOSULFO FERTILIZER DEVELOPMENT FOR HORTICULTURE CROPS II, THE EFFECT OF PHOSPHATE ROCK CONTENT AND INOCULUM RATIO OF BIOSULFO ON P AND S UPTAKE AND YIELD OF RED ONION IN ACID AND ALKALINE SOILS

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BIOSULFO FERTILIZER DEVELOPI{ENT FOR HORTICULTURE CROPS
II, THE EFFECTOF PHOSPHATE ROCKCONTENTAND INOCULUIVl
RAT]O OF BIOSULFO ON P AI]D S UPTAKEAND YIELD OF
RED ONJON IN ACID AND ALKAL]NE SOILS

ra.!rly orAsi:u rure unveEly ot seb? as M3rcr surakana
suram 36A Keilnoai Surrkada s7126Ceilra J3va ndonesa
rAqrcuture univeEry or cadjah Mada yosyskana

Jk

I 6i5ee4 E.mai adad

1s99:

&yanr

uns@vahoocom

irns

20031 or

(satih cr a1 rgas
al, 2000i Fenice er a/

ar

m.k{ufu

a/ , 2002 saslro,20r]6). Mcrcbes
dssove rhe PRP by rheir acids prcduced borh
o4af c lsleYenson
Fenc. erar,2000rGadaq and sa, 2002i sasro,
2006) s re as noqanc acds (c.rre 1999).

2000i Reddy er

IFRS) conleil and

bosu fo on P and S uplake and €d onon yre d on
acid (ariso) and akarne (vei$r) eis rwo
faclds daualed *re PRS mnrenr (0% 60%
30%) and inocurum or /.n€e, Pnarqirve,s,s Er o
of bGurro (0:0, 1 1 and 3r) As mu.h of 12 ks of
ei (o 2 mm) mred rhoroushrywrrr biosurfn, basc

allemalvewayloicrcasetlioavailabillyolFftom

Ied]l4andmanurepuljnlopolylaolhcnmle,iiq

oi was p a dl lo dch pol)6aq aid ru bated n
0ie gEn holse. Trre elperlnrenb a:nqed ,i

on

onpleley

hndomzed

EpiErions Varabes obseoed incuddr P aid S
uprake, and onion yed
ar 5"/o levelor s sn lcail ldMd wlh DrlrRT ra y
ssnir€d niuenG
a.d Amso

on

phcsphde

(cren,{

s uplakc and

2003) Padjany acdualed
F3rmeE I

AL

]

aid Pe l]t f.r Verl

soL

shra

avaiabre F (risdae er a/,

(2006t

onron

dsso

shlrcd

n.,4'r

rhh opeis !p

resDellYe,

€n

liion o,

lrspl

aEo be doie wrh
uld z ns mi6obes.

have tDnq besn used E osurer

3id 3u[ur i !r&r

rrre run sus or
]

super phosphare

HammoM

sultur c acid produced by sultur

supry$

Hiqhesl P an{j

(sspl.r rpd

i

p

lssol rhe

research or

rhe addirion

ko6ka,2

oppcdunres ror

iqu

ol surtuc

d medium

Fln'

se

o'

phosptrale

,lre. and sunu oxd4r funsus P.

na&ioyoturs

lnd v dua y have been known ro dhsorv€ r,\e PR P,

(P)

Effob lo ncrea* rhe soubiitorp rDsp,rrc
fton phosphate rock (PRl has been done br

dpolig ths
mcrcbes eirher

1016

or bacler a

lsleven$i reeo

s.ri

r

fuisrs P ,a,gbye,s,s

,&er and
capabre of d

surturoxd zer

ssvins PR.p