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R. G. Patil ¹, S. G. Nanaware ¹

Affiliations
1 Department of Zoology, L. B. S. College, Satara, 415 002, Maharashtra, IN

Abstract

The plant Acacia sinuata (Merr.) shows piscicidal properties. The economically important freshwater fishes (Labeo rohita, Catla catla and Cyprinus carpio) were exposed to sublethal concentration (75 ppm) of alcoholic extract of the leaves of Acacia sinuata for 96 hrs. The toxic compounds in the leaves of Acacia sinuata showed piscicidal properties and induced haemolysis and affected almost all haematological parameters. All the parameters in blood except E.S.R. were found to be decreased in all the fishes, while E.S.R. was increased after 96 hrs of intoxication. Comparatively, haemolytic activity was lowest in C. catla, and highest in L. rohita. The results have been discussed in relation to mortality, metabolic activity and behaviour of these fishes.

Keywords

Acacia sinuata, Phytotoxin, Freshwater Fishes, Haematology.

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V. R. Naik ¹, P. B. Patel ¹, V. D. Barvalia ¹, B. K. Patel ¹, R. G. Patil ¹

Affiliations
1 Soil and Water Management Research Unit, Navsari Agricultural University, Navsari (Gujarat), IN

Abstract

For studying the effect of saline water usage through drip in brinjal, one field experiment was conducted on Vertic Halaquepts of Coastal Soil Salinity Research Station, NAU, Danti during 2002-03, 2003-04 and 2004-05. The treatments consisted of 4 water salinity levels (2, 4 6 and 8 dS/m) and 3 moisture regimes (0.4, 0.6 and 0.8 PEF). The experimental soil was non saline-sodic (EC_2.5 0.28 to 0.43 dS/m and pH 8.89 to 9.58). The differences in yield of brinjal due to salinity levels and moisture regimes were not conspicuous during individual years and in pooled data also except that of salinity effect in pooled analysis. The interaction effect of water salinity and PEF levels was not significant. Among the salinity levels, application of water having EC 8 dS/m gave significantly lower yield than 2, 4 and 6 dS/m waters. Effect of different treatments applied to brinjal was not significant on the grain yield of subsequent paddy. Though, the soil salinity tended to increase due to irrigation with saline water in brinjal, it decreased considerably after harvest of paddy crop due to heavy monsoonic conditions of this area.

Keywords

Brinjal, Salinity, Drip, Paddy.

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