Effectiveness of chemical and biological methods for the reclamation of a calcareous saline-sodic soil (ECe = 9.1-15.2 dS mol; SAR = 27.4-43.5; pHs = 8.1-8.3; lime = 10.5-12.7%; texture = silt loam) was evaluated under field conditions. Two gypsum levels (No gypsum; gypsum @ 50% GR) were employed with four crop rotations (No crop, i.e. fallow; rice-wheat; Sesbania-barley; Kallar grass-alfalfa). Canal water (EC = 0.22 dS mol) was used for irrigation and leaching. The cropped treatments performed better than the non-cropped treatments in terms of soil reclamation at both the levels of gypsum application. The differences among the cropped treatments were not prominent. The cropped treatments completely reclaimed the soil within a year. The biomass production of all the species was more in the gypsum treated plots except Kallar grass where its yield decreased
