An irrigation controller mechanically actuated by soil-water tension: I - Design, development and laboratory evaluations - Almeida, Alexsandro C. S; Botrel, Tarlei Arriel; Raine, Steven R; Camargo, Antonio Pires de; Pinto, Marinaldo F; Salvador, Conan A (Revista Brasileira de Engenharia Agrícola e Ambiental, 2017)