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Studies on low productive rainfed brackishwater culture ponds along the periphery of chilka lake, orissa.

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Title Studies on low productive rainfed brackishwater culture ponds along the periphery of chilka lake, orissa.
Not Available
 
Creator Gupta,B.P
S.M.Pillai
L.Krishnan
K.Alagarswami
 
Subject Rainfed
Brackishwater Culture ponds
Periphery
Chillka lake, Orissa
 
Description Not Available
A survey was conducted by collecting water and sediments from ten rainfed ponds of Khandualpur area situated along
the periphery of Chilka lake to investigate the possible causative factors for the low production of Penaeus monodon
(100457.5 kgMyr) and to consider ways and means to help augment production in such systems. Seasonal changes
were studied during the monsoon and winter production cycles as also the resting summer period during the year
1988-89. The data on sediment characteristics reveal that organic carbon (0.17-0.66%), CaCO3 (nil-2.0%), available nitrogen
(11.37-23.83 mg/100 g soil) and available phosphorus (1.62-6.34 mgI100 g soil) are indicative of low productivity. Among
other factors, the exiremely low redox potential ((Eh:48*7 to -1601) mv) and very high iron content (0.90-1.85%) are probably
limiting the production of prawn in these ponds. Further, the water quality and low nutrient status (phosphate 0.0111-0.012,
nitrate 0.020-0.050 and alkalinity 22.G60.0 ppm), low salinity (5.0-10.0 ppt) and high iron content (0.92-2.68 ppm) also
indicate low productivity. The very poor plankton and benthos density confm the poor productivity of these ponds. The
sandy clay soil with a pH range of 5.6 to 9.4 can be better utilized with suitable management practices to overcome
the low nutrient status and high iron content of soil and water. Possible measures for improving the productivity of the
rainfed ponds are discussed
Not Available
 
Date 2023-07-14T05:46:46Z
2023-07-14T05:46:46Z
1990-01-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80097
 
Language English
 
Relation Not Available;
 
Publisher Not Available