Water quality is known by its physical, chemical and biological characteristics. It is a measure of the conditions of water related to the requirements of one or more biotic species and to human need or purpose. The parameters for water quality are determined by its various applications in different fields. ln the present work water resources from different areas of Jodhpur city were carefully selected and studied. On the basis of their physical and chemical parameters these water resources were classified into three categories-Mild contaminated, contaminated and highly contaminated. The present study reports the maximum utilization of natural water resources of Jodhpur city in different fields.

A field experiment was conducted on sandy loam soil at Jodhpur during rabi season of 2006-2007 and 2007-2008 to study the effect of biofertilization, nitrogen and phosphorous on productivity of mothbean. Rhizobium, Phosphotica and dual inoculation of Rhizobium + Phosphotica significantly enhanced the growth parameters viz., plant hight, branch/plant, nodules/plant and grain and straw yields of mothbean. Maximum grain yield, seed/pod, growth parameter and nodules/plant were recorded in Rhizobium + Phosphotica combined with N @ 10 kg/ha + P@ 20kg/ha followed by Rhizobium+Phosphotica + N15 + P30. Straw yield, pods/plant, 1000-seed weight and seed weight/plant were significantly high in T7 followed by T6. Harvest index followed the order of Rhizobium+ Phosphorica (49.7) and Phosphotica (49.6) and it decreased with increasing N and P doses. Net return of mothbean was maximum in Rhizobium+ Phosphotica combined with N@ 10 kg/ha + P@20kg/ha (Rs 17328/ha) followed by Rhizobium + Phosphotica + N15 + P30 (Rs 16,467/ha). However, returns per rupee invested were more in T6 (Rs 295) followed by T7 (Rs 2.9) and Rhizobium+ Phospholica (Rs 2.9).