Suwannakan Supmattrra, Khongdet Phasinam, Dowroong Watcharinrat, Phraomas Charoenrak,. 2021. “Efficiency of Drip Irrigation Combined With the Use of Bacillus Bacteria in Promoting Chili Growth”. Design Engineering, June, 691-99. http://thedesignengineering.com/index.php/DE/article/view/2327.