Barus, W.A., Khair, H. and Irawan, M.F. 2018. Growth Response and Production of Broccoli (Brassica oleracea) With Application of Azolla Composting at Several Plant Spacing. Indonesian Journal of Agricultural Research. 1, 2 (Sep. 2018), 179-186. DOI:https://doi.org/10.32734/injar.v1i2.177.