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An Analysis of the Utilization of Gamal Plant (Gliricidia sepium) as a Shade for Coffee Plants
(IOP Journal of Physics: Conference Series 1563 (2020) 012014, 2020-06-19)
Indonesia is the largest coffee exporter in the world, which is in the fourth position
after Brazil, Vietnam and Colombia. However, the productivity of coffee produced from year
to year tends to decrease and not optimal. ...