Didwana lake is the second largest saltwater lakes in Rajasthan, considered for its commercial salt production. The lake and its catchment area exhibit a diverse array of biological life. A thorough analytical investigation was conducted to evaluate current status of zooplanktonic fauna and their conservation. This study reveals that saline lakes host a variety of zooplankton fauna for fisheries point of view, which are classified within the group protozoa, rotifera, cladocera and copepoda arthropods. Zooplankton taxa were documented in Didwana lake from January to December 2018. The research area was visited every month for collection the samples. The water samples were collected by standard bolting silk plankton net (0.25 mm mesh size). Concentrated zooplankton samples were taken from two different sites and initially examined in C.Z. inverted microscope to determine the species. During the study, numerous species belonging to genus namely Nebela, Amoeba, Paramecium, Artemia, Moina, Bosmina, Ceriodaphnia, Daphnia, Chydorous, Heliodiaptomus, Mesocyclops, Eucyclops, Brachionus, Keratella, Monostyla, Polyarthra, Hexarthra and Filinia were reported. A total 22 species of zooplankton were identified. Artemia, Moina and Brachionus species are prevalent in all zooplankton, whereas Filinia longiseta species are rare. The abundance exhibited an increase in sub saline and hyposaline water, whereas it was diminished in meso- and hypersaline water.

Zooplankton Diversity in Didwana Lake: A Saline Lake in Rajasthan

<div style="text-align: justify;">Pulses are the main source of protein particularly for vegetarians. Mungbeans can be consumed solely, or combined with rice to make khichari, or combined with vegetables and greens to make hearty soups or grind into flour to be used to make crepes or added to breads. Turmeric, cumin, dried ginger and coriander are some spices that work very well with mungbeans. The latest concept in this series is &ldquo;Front Line Demonstration&rdquo; which is new concept of field demonstration evolved by the ICAR with the inception of the technology mission on oilseed and pulses crops in mid nineteen eighty. The study was conducted in 12 FLD villages of four panchayat samiti namely, Nagaur, Degana, Didwana and Merta panchayat samities of Nagaur district, adopted by the KVK, Nagaur were included and a sample of 75 beneficiary&rsquo;s farmers were selected randomly. Similarly, 75 non-beneficiary farmers from 12 another non FLD villages from nearby areas of the adopted villages. It was found that the beneficiary farmers possessed maximum adoption gap regarding &ldquo;Plant protection measures&rdquo;, while least adoption gap was observed about the practices &ldquo;Sowing of seed and spacing&rdquo; of improved mungbean production technology. Whereas, the non-beneficiary farmers possessed maximum adoption gap regarding &ldquo;organic manure and fertilizer management&rdquo;, whereas, the least adoption gap was found about &ldquo;Sowing of seed and spacing&rdquo; of improved mungbean production technology.</div>

Zooplankton Diversity in Didwana Lake: A Saline Lake in Rajasthan

Adoption gap of improved mungbean production technology by beneficiary and non-beneficiary farmers in Nagaur district of Rajasthan