Respon Pertumbuhan Dan Hasil Beberapa Varietas Selada (Lactuca Sativa L.) Sam…

ABSTRACT Lettuce (Lactuca sativa L.) is a vegetable that has a high selling value but is indicated to be polluted by pesticides so it needs to be mitigated by cultivating organic. This study aims to determine the response of growth and yield of several varieties of lettuce to various compositions of soil minerals and organic matter in two planting periods. The experimental method was arranged …