“THE EFFECT OF CONCENTRATION AND FREQUENCY OF APPLICATION OF SHALLOT EXTRACT AS A NATURAL GROWTH REGULATOR (PGR) ON THE GROWTH OF ROBUSTA COFFEE SEEDLINGS (COFFEA CANEPHORA)” (2025) Journal Tropical Agricultural Inovation, 1(1), pp. 7–13. Available at: https://jurnal-alfatah.id/teknofarm/article/view/3 (Accessed: 1 December 2025).