The effect of biofertilizer application and different levels of drought stress on yield and forage quality of pea (pisum sativum L.) Emaraz cultivar

This study was conducted to evaluate the effect of biofertilizer application and drought stress on physiological characteristics and forage quality of pea (Pisum sativum L.).

The factorial experiment was conducted based on a randomized complete block design in the lands of Harris County, East Azerbaijan Province Experimental factors include: irrigation treatment at four levels of normal irrigation (control treatment), cessation of irrigation at the stage of seed filling, cessation of irrigation at the stage of flowering and non-irrigation and treatment of biofertilizers at eight levels of seed inoculation (treatment) Control was seed inoculation with Azotobacter, Azospirillium, Mycorrhiza, combined application of Azotobacter and Azospirillium, combined application of Azotobacter and Mycorrhiza, combined application of Azospirillium and Mycorrhiza and combined application of Azotobacter, Azospirillium and Mycorrhiza.

The highest digestibility, ash and insoluble fibers in acidic detergent were obtained in complete irrigation and non-application of biofertilizers and the lowest in non-irrigation and combined application of three types of biofertilizers. The highest yield, soluble carbohydrates and crude protein were obtained in complete irrigation and combined application of three types of biofertilizers and the lowest in non-irrigation and non-application of biofertilizers. Drought stress reduced insoluble fibers in neutral detergent by 3.62% compared to full irrigation treatment.