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Water use in carp polyculture: effects on rearing environment and water productivity.

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Title Water use in carp polyculture: effects on rearing environment and water productivity.
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Creator Mohanty, R. K. ; Mishra, A. ; Mandal, K. G. ; Panigrahi, P. ; Ambast, S. K.
 
Subject aquatic animals, aquatic organisms, fish culture, fish ponds, inorganic fertilizers, manures, polyculture, production costs, sedimentation, seepage, water quality, water treatment, water use
 
Description Journal article
This study was carried out in farmers' fields to quantify the total and consumptive water use (CWU) in carp polyculture under different water management protocols. Treatment-wise estimated total crop water requirement ha-1 (culture duration-180 d) was 3.69, 4.62 and 3.9 ha-m, while the computed consumptive water use index (m3 kg-1 biomass) was 6.62, 9.31 and 7.08, in T1 (no water exchange), T2 (10% water exchange on monthly basis) and T3 (10% water exchange depending on the water quality variables), respectively. Water use in ponds usually varies with the intensity of production, frequency and amount of water exchange employed. Higher the amount of water exchange, higher is the total water use (TWU) as in case of T2. Various hydro-biological parameters prevailing in the different treatments were within the optimum ranges and did not fluctuate drastically. This was probably due to the similar levels of inputs in all the treatments in the form of organic manure, inorganic fertilizer and periodic liming. The regulated water exchange in T3, showed improved water quality and crop performance (P
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Date 2021-07-29T04:37:08Z
2021-07-29T04:37:08Z
2017-01-01
 
Type Article
 
Identifier Not Available
0972-1584
http://krishi.icar.gov.in/jspui/handle/123456789/50913
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Coastal Agricultural Research, West Bengal