Effect of Organic Matter and Gypsum Powder Some Traits of Maize in a Saline-Sodic Soil

Saline-sodic soils have improper physical, chemical and biological condition and the crop productivity is low in these conditions. Application of conditioners often can be a proper solution for reclamation and improving the productivity of saline-sodic soils. In order to study the effect of some conditioners on soil chemical characteristics and yield of maize (SC260 cultivar) in a saline-sodic soil, an experiment was carried out as a completely randomized design with 3 replications in a research greenhouse of Ferdowsi university of Mashhad. The studied treatments included control and 10 ton/ha of compost (MC), vermi-compost (VC), poultry manure (PM), and gypsum powder (G). The results showed that poultry manure and vemi-compost treatments increased significantly (