The effect of bio-fertilizers on the physiological traits of chickpea under dry-land conditions and supplementary irrigation

In order to investigate the effect of biological fertilizers on physiological traits under dry-land conditions and supplementary irrigation on two chickpea cultivars, an experiment was carried out in the form of a split-split plot in the form of a randomized complete block design with four replications during the crop year 2017-2018 in the field.The research was carried out by the Faculty of Agriculture of the University of Kurdistan.Irrigation treatments as the main factor (no irrigation or dry-land, one irrigation in the flowering stage, two irrigations in the seed filling stages), two chickpea varieties (Adel and Azad) as secondary factors and the application of biofertilizers at eight levels were considered as sub-factors.The results of this research showed that the integrated application of biological fertilizers at the levels of two times of supplementary irrigation caused the highest number of physiological traits such as height, number of sub-branches and number of seeds in the field chickpea plant.Adel cultivar was significantly superior to Azad cultivar in all traits (height, number of sub-branches, pod length and number of seeds per plant).The combined application of bio-fertilizer had the greatest effect on pod length, so that the maximum pod length was obtained in the treatment of mycorrhiza + nitrozist and phosphozist + algae extract (with an average of 3.4446).Therefore, the use of the appropriate combination of biological fertilizers and supplementary irrigation can be effective in reducing the adverse effects of drought stress in arid and semi-arid regions.