List of Articles کلروفیل a و b Open Access Article Abstract Page Full-Text 1 - Investigation of the effect of plant density and humic acid on paddy yield, water use efficiency, and biochemical traits of direct-seeded rice cultivation (Oryza sativa L.) in northern Iran Manizhe Kalteh Hossein Ajam Norouzi Abolfazl Faraji Abdol Aziz Haghighi Ebrahim Gholamalipour Alamdari 10.30495/iper.2022.688804 Open Access Article Abstract Page Full-Text 2 - The combined effect of different levels of salinity and irrigation water on physiological characteristics of forage sorghum in different cuttings halimeh piri