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). Journal Tropical Agricultural Inovation, [S. l.], v. 1, n. 1, p. 7–13, 2025. Disponível em: https://jurnal-alfatah.id/teknofarm/article/view/3. Acesso em: 1 dec. 2025.