5" day - Central Institute of Brackishwater Aquaculture
5" day - Central Institute of Brackishwater Aquaculture
5" day - Central Institute of Brackishwater Aquaculture
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Su~arulldavr<strong>of</strong>~icd~krtilianmr(rplibdbacdm~<br />
abwnaiau (amqmacy ricb sccbi dim 30 - 10 cm) <strong>of</strong> algal pmduam. Thc<br />
water kvcl b dm raised to LOQIUcm. Now thr pad u mady Iix stocking<br />
-0fbrirnp.<br />
Once rhc pad is fill4 nutrias will rrbue to v*a eohnnn rsarlhg hi*<br />
nanmc carcenaaiaru. High diuolvd imrpfik niagn (DM) unantrstion<br />
mi~fonuincauidmbkwwm<strong>of</strong>rmmmLmdnirriccwhid,myheulnuod<br />
~aUlrladtkusitu.IwapulaaoClo~Wrhrimp~tdterfilliqpond.<br />
Pahrpr one-wkk time my k ~ffihm to dscrsuc DIN cawrmntion allowing<br />
phkialto.bab.<br />
3.2 Ma-t <strong>of</strong> pomd bottom d e w &tan<br />
Mn# cuhuu lnplu like hw cnaly pa(^& Isd fmiliza nc m added.<br />
The fed no! earn by the shrimp smh to pad baaan. Thc urhmscwuc mancr.<br />
suspmded solids, faecal matter and dcld plankton ctc. also pntle u UK pond bonom.<br />
Thcx rmUri.1~ have mbined effect on dw env-t <strong>of</strong> dw pond bonom To<br />
undenund UK cmdition <strong>of</strong> the pad bmcm, the following p.nm*ar are to be<br />
monitored nprluly;<br />
pH <strong>of</strong> d l<br />
This is one <strong>of</strong> the man impman1 mil quality puun&rs since it affects the<br />
pond condtt~on. Gmnlly, soil pH ranging betwan 6.5 ud 7.5 is UK bcw suited<br />
w k avallnhilit) <strong>of</strong> nitrogen. phosphorus. pnarsium. calcium and magnesturn IS<br />
rnaxlmwn. The micronutrient whosc requirancncs uc very mall is also available In<br />
chis pH nnge ll~ low pH <strong>of</strong> bonom rcdimat Indicates unhygienic condit~on nccds<br />
regular check up.<br />
Orpmk mmnrr<br />
Vnutilited feed, urbonwous mum, dissolved solids. fvcal mamr, dead<br />
plankton etc vnle at the pond boaom and nsultr in che .ccumulatlon <strong>of</strong> organtc<br />
lords The change in the bonom In tern <strong>of</strong> increasing organic load should k<br />
rtcorded rtgulul) for the mmrtement <strong>of</strong>the pond bonom.<br />
Radoi-po(.mthl<br />
Reduced or uvnobic dimmu my acur at the pond bonom <strong>of</strong> heavily<br />
socked pond with huq organic load and pooc water circubdon. Under mrobtc<br />
condition <strong>of</strong> UK pond bottom. dud subMnces wch as HIS. Mi,. Clt etc. an<br />
fmed which art toxic lo henchic wgmim.<br />
Water circulatiw by wma excbmp, wind a d m helps to move waler<br />
rmu mud rwtke .ad pmvan the devslopncnt <strong>of</strong> ndvcod condition. Bortom<br />
should be moochaod rd rlopsd m RsiUme &ahin# <strong>of</strong> apnic ulm ud toxic<br />
rubnuracr. CIlmldnlnydIntbpadnuy~klpbtbehed<strong>of</strong><br />
org~lc wu* palodiully. The rsdox paeat*l (h) <strong>of</strong> mud W d noi exceed -200<br />
mV.
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