PENGARUH KOMPOSISI LARUTAN PUPUK DAN ZPT TERHADAP INDUKSI PEMBUNGAAN ANGGREK CATTLEYA (Cattleya sp.)

Cattleya sp. Orchid. is one of the favorites for ornamental plants, because it has a unique shape, color and flower character. Consumer interest in this orchid is due to the large size of the flowers, the fragrant aroma when the flowers bloom, and the relatively long blooming time. Naturally, in plants there are various types of hormones that regulate and trigger physiological processes, including during the flowering period. During the process of accelerating orchid flowering, efforts can also be made to provide ZPT. This research aims to examine the effect of the correct composition of fertilizer solutions with growth regulators (ZPT) on the induction of flowering of Cattleya sp. orchids. The research was conducted at Mitra Anggrek Indonesia, Junrejo District, Batu City from february to May 2024. The research was conducted using the 1-factor Group Design (RAK) method. The combination of compound NPK and ZPT treatment abbreviated (P) consists of P0 (air), P1 (compound NPK 2 gr/l), P2 (BA 50 mg/l, GA₃ 50 mg/l, compound NPK 2 gr/l), P3 (BA 150 mg/l, Paclobutrazol 100 ml/l, compound NPK 2 gr/l), P4 (Pronas 10 ml/l, compound NPK 2 gr/l). Each combination in the treatment will be dissolved into one solution, and 4 solutions will be obtained, namely solutions P1, P2, P3, and P4. Research results: P3 solution treatment had a greater effect on the induction of flowering in Cattleya orchids. The dose contained in the P3 treatment is more optimal for the growth and development of Cattleya orchids, especially in terms of stem diameter, number of tillers and flowering.