Abstract:North Sumatra is one of the provinces in Indonesia which has abundant natural resources. Due to the irreparable environmental damage that has occurred, several groups advocate and implement policies related to green economy, one of which is agriculture. To improve the health and productivity of agro-ecosystems organically and to provide sufficient, high-quality and long-lasting food and fiber supplies, organic farming systems are a comprehensive and integrated production approach. This study uses a literature … Show more
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