Regenerative agriculture based Good Agricultural Practices (GAP) for soil health in arabica coffee in North Sumatra

Abstract

This study was learn for influence application agriculture regenerative based Good Agriculture Practices (GAP) on the soil health of Arabica coffee plants. The research location is in the highlands of the Lake Toba area, namely Karo Regency, Simalungun Regency, Dairi Regency and North Tapanuli Regency. The Arabica coffee plants selected are productive or mature plants that are managed by implementing regenerative agriculture in coffee cultivation according to GAP and not according to GAP. Data analysis uses cluster analysis, namely grouping objects with the same characteristics and PCA-biplot analysis. The study's findings indicate that applying GAP-based regenerative agriculture to soil improves its nutritional content in terms of both total N and organic C, as well as the soil's C/N ratio. Where the C/N ratio is 10.55 - 14.01. In general, the application of cultivation with GAP has been proven to increase soil fertility and soil health, thereby supporting vegetative growth, and has the potential to increase coffee plant production.