5" day - Central Institute of Brackishwater Aquaculture

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Rriodic Removal of Bloom
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/ N& I , Adaqrua . Aefu~n. Ranoval
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I or*. Wuc
Wuar Exchange
&Sm nillvlnhibit 1
I I norm.lrespvul0" !
v EXCESSIVE ' High Alpl blm+ I Reduce Fenlllrs~ton
N&P DO Dcplaton
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vi.
Mulltlon Resumat ' Avold Ihe we of such '
1 INDISCRIMlNATE I ptbogcns & , chm14s
1 USE OF Btolccwnulat~on
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1 CHEMICALS -_ _ _ _ _.-
41 J Gucou factom
I A Remove %%'me -
G C& Lesstmportant CNOH): @ 0 84 ppm 6 COO n' 0 64 ppm lo
I Pm*cr move I pprn CO:
S I In bnck~shwater -
E Ch Chlortnat~on -i 5-10 ppm Blncblog Pomdcr
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L 1
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1 Exccrs~vc
I Chlonmlnes
r Dechlonnacion +
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I'x of Aemton
llx of SOl~Acttvatcd C
Hyp 6 0 5.2 ppm to reduce I ppm res~dusi
43 Ex&e pbytophoktoo growtb
Pond prepstion play significant role in shrimp Euming. N e d plOductjv~ty
is not suffkimt ud ponds Dtltrnenn us indispenwbls IO enhm the jpwth of
phyop*nktonr md to bring che wmtn and roll pnmclm under
oplunum kvcl. Appliution of tnorganic fenill~cn (N.PIOI.:I I ) or manurn is
nctesary lo forcer phytoplrnkton growth, when water is low in nuvtent wntents.
Sometima, pMd, which develop sku w m ditlon am reputedly fntiltltd wtlh
high doses of inorganic fmtilivn with che to produce blm. Once Ihc bcnthlc
1Igu dcvclop, it is luch lo fcrIil~w che ponds. Badly prrpued pond, can pw
probkms of mrint.inig phnkm blooms, stable w m conditions d evcntwlly
bdlodlruryndroma.Tbrdisuiv~ofvviow~ofrlprhIhrimp
pndr am known. Sane specin of bcnltrlc a l uc ~ hlwy toxlc ud hider
rnovmsm of shrimp d compte for oxygen and algae rid cadimenation md pond
bottom degndrrion. Thev art all potential facton convibuling to stress on ttK
shrimp d invites di- outbreak. Den* phytoplanhon blooms as M wnsumen