The rhizospheric soil of Leptadenia pyrotechnica from saline (Pachpadra) and non-saline (Jodhpur) site was collected to isolate fungi and to assess the efficiency in P solubilization. Three common fungal species viz., Aspergillus fumigatus, A. flavipes and A. niger were assessed for acid phosphatase, alkaline phosphatase and phytase enzyme production for P solubilization at both intracellular and extracellular conditions. All three fungi from saline soil produced significantly higher amount of acid and alkaline phosphatase, whereas in non-saline soil phytase production was higher. All fungi showed higher level of intracellular enzyme activity than extracellular condition in both type of soils
Sushil Kumar Singla, Neelam Patel, Sumit Pal, Mairaj Hussain Shri Venkateshwara University, Gajraula, Amaroha, Uttar Pradesh Water Technology Centre, ICAR - Indian Agricultural Research Institute, New Delhi
The groundwater quality on both sides of the Ghaggar River was generally good, resulting in the installation of numerous tube wells in the belt along the river. The deep groundwater quality in the northern and extreme southern part of the SIC was quite poor. Rising groundwater levels in areas underlain with marginal to poor quality groundwater due to water losses from the irrigation system. Declining groundwater level in the good quality groundwater zones due to over exploitation. The shallow groundwater quality was good in about 28 %, marginal in 64 % and poor in 8 % of the district. Deep groundwater quality was good in 20 %, marginal in 16 % and poor in 64 % of the area. Shallow tube wells constructed in the district have discharge range between 300 and 1000 lpm with a drawdown of 1.0 to 3.5m. While deeper tube well/ bore wells constructed in Ghaggar basin tapping water bearing zone in depth range 100m to 260m yield 1500 to 3000 lpm with 5 to 17 m of draw down. The river Ghaggar has experienced a declining trend in the groundwater levels. The increase in the intensity of tube wells is mainly concentrated in the regions where groundwater is of relatively better quality. The number of tubewells per km2 varies from as low as 2 in the Dabwali block to 5-10 in the Sirsa, Rania,Baragudha and Elenabad block.Varying water levels and ground water development are observed in Sirsa district, a large part of district Sirsa is suitable for Artificial Recharge on the basis of ground water development level. But it would be prudent to take Sirsa, Rania Dabwali, Ns Chopta and Ellenabad blocks of the district in priority as are of over-exploited category.