Volume 1 – Issue 1 (2020) Original Article Evaluation of tetraploid induction in forage sorghum cultivar “Omid-Bakhsh” using colchicine treatment Ibrahim Hemadesh, Farajollah Shahriari, Mohammad Farsi 1–10 Download PDF doi 10.30493/das.2020.103715 Original Article The influence of various levels of ammonium to total nitrogen on post-harvest performance of three apple cultivars (Golab Kohans, Gala, and Granny Smith) Fares alhaj alali, Mohammad Ali Askari Sarcheshmeh, Mesbah Babalar 11–19 Download PDF doi 10.30493/das.2020.103716 Original Article Wastewater treatment efficiency of an experimental MBBR system under different influent concentrations Bayan Aldris, Nahed Farhoud 20–28 Download PDF doi 10.30493/das.2020.103717 Original Article The effect of biocide 2 CHIMEC 7660 on N80 steel corroded by bacterial corrosion Nourelhouda Dekhili 29–35 Download PDF doi 10.30493/das.2020.103719 Original Article CO2 emissions in calcareous soil under various manure additions and water availability levels Raghad Mouhamad, Ameerah H. Atiyah, Ghassan Al-Azzawi, Bassim R. Al-Bandawy 36–42 Download PDF doi 10.30493/das.2020.220730