Evaluation of soil quality of some Reservoir fisheries in Dhaulpur district of Rajasthan

Abstract

The present investigation deals with evaluation of soil quality of some reservoir of the Dhaulpur district in Rajasthan during January to June, 2011. Soil reaction was found to be alkaline in all the reservoirs studied with values ranged from 7.3 to 8.02. The minimum and maximum values of specific conductivity of soil encountered were 177 µmhos in Baripura reservoir and 320 µmhos in Bansrai reservoir respectively. The maximum value (0.88 %) was encountered in Chilachond and minimum value (0.15 %) in Aagai reservoirs respectively. The average values of soil organic carbon were 0.509 ± 0.2482 %. The reservoir bottom is often rich with organic sediments as well as benthic communities. The stocking with more bottom feeding fishes will certainly increase production in general. Available phosphorous of bottom soil, minimum and maximum values of 0.22 mg/100g soil and 0.69 mg/100g soil of were encountered in Aagai and Chilachond reservoirs respectively. Water retentivity of the reservoirs was not a function of soil characteristic; rather it was determined by the water abstraction for irrigation purposes in the agricultural farming sector.