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- W2040943645 abstract "Production of combinations of rohu (Labeo rohita) and catla (Catla catla) from periphyton-based aquaculture system was compared using 12 ponds and six stocking ratios: 100% rohu alone (treatment 100R), 80% rohu plus 20% catla (80R/20C), 60% rohu plus 40% catla (60R/40C), 40% rohu plus 60% catla (40R/60C), 20% rohu plus 80% catla (20R/80C) and 100% catla alone (100C). Ponds (75 m2, depth 1.5 m) were stocked at a rate of 15 000 fingerlings ha−1. Bamboo poles (mean length=2.0 m; mean diameter 5.5 cm; 9 poles m−2) used as periphyton substrates were planted vertically into the pond bottoms and ponds were fertilized fortnightly with cow manure, urea and triple super phosphate (TSP) at rates of 4500, 150 and 150 kg ha−1, respectively. Phytoplankton biomass decreased with increasing catla biomass whereas periphyton biomass decreased with increasing biomass of rohu. Ash content of periphyton increased with increasing number of catla and decreasing number of rohu. Growth of catla was dependent (P≤0.05) on stocking density but that of rohu was independent (P>0.05) of stocking density, possibly because of the reliance of the latter on periphyton for food. Highest fish yield was recorded in treatment 60R/40C (586 kg ha−1), followed by treatments 40R/60C (459 kg ha−1), 80R/20C (439 kg ha−1), 20R/80C and 100R (both 225 kg ha−1), and 100C (146 kg ha−1), respectively, over the 70-day period. A stocking ratio of 60% rohu and 40% catla appears appropriate for periphyton-based production systems of Indian major carps, although the ratio is likely to be influenced by both stocking density and food supply." @default.
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- W2040943645 title "Effect of dc electric field on resistance of thin manganese and palladium films" @default.
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- W2040943645 doi "https://doi.org/10.1016/s0042-207x(82)80195-4" @default.
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