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Anggrek merupakan tanaman hias yang memiliki nilai ekonomi tinggi, sehingga banyak dibudidayakan di Indonesia. Perbanyakan anggrek secara kultur jaringan di tahap aklimatisasi seringkali mengalami kegagalan. Upaya yang dilakukan untuk mendukung keberhasilan aklimatisasi anggrek dilakukan dengan interval pemupukan dan lama penyungkupan yang tepat. Tujuan penelitian adalah untuk mengetahui interval pemupukan dan lama penyungkupan yang sesuai untuk aklimatisasi anggrek dendrobium. Penelitian dilaksanakan pada bulan Februari sampai Juni 2022 di greenhouse Agrotechnopark Universitas Jember. Metode penelitian menggunakan Rangcangan Acak Lengkap Faktorial (RALF) dengan dua faktor yaitu interval pemupukan dan lama penyungkupan dan diulang sebanyak 4 kali. Taraf interval pemupukan yaitu: (P1: 6 hari, P2: 10 hari, dan P3: 14 hari), sedangkan taraf lama penyungkupan yaitu: (S0: tanpa sungkup, S1: 10 hari, S2: 30 hari, dan S3: 50 hari,). Parameter pengamatan meliputi persentase planlet hidup, pertambahan tinggi tanaman, pertambahan jumlah daun, jumlah akar, panjang akar, dan berat segar tanaman. Data yang diperoleh selanjutnya dilakukan analisis menggunakan analisis ragam dan dan diuji lanjut menggunakan uji jarak berganda Duncan pada taraf kepercayaan 95 %. Hasil penelitian menunjukkan interval pemupukan terbaik untuk aklimatisasi anggrek dendrobium adalah 6 hari sekali yang menghasilkan pertambahan tinggi rerata 1,43 cm. Lama penyungkupan terbaik adalah tanpa penyungkupan yang menghasilkan jumlah akar rerata 10,42 helai dan panjang akar rerata 8,29 cm. Kombinasi interval pemupukan dan lama penyungkupan terbaik adalah 6 hari sekali dengan tanpa penyungkupan yang menghasilkan pertambahan tinggi rerata 2,23 cm.

Home garden “pekarangan” plays an important role in conserving plant diversity in urban and suburban area. The suburban area including of pekarangan is a buffer area to preserve the quality of the urban environment. This study aimed to determine the utilization and plant diversity in suburban pekarangan of Yogyakarta. This research was carried out in Maguwoharjo using a survey method for 105 samples of home garden. Data were collected by observation using purposive sampling based on size of yard area. The results showed that the utilization of pekarangan in Maguwoharjo was dominated by ornamental plants, consist of sri rejeki (Aglaonema sp., Araceae), orchids (Dendrobium, Orchidaceae) and frangipani trees (Plumeria sp., Apocynaceae). Other functions of home garden were fruit plant and ground cover/grass. There was found 90 species of plants from 49 families, 27 species of trees, 60 species of shrubs, and three species of ground cover. The Shannon Wienner plant diversity index (H') was above 3 indicating the high category and the Evenness species evenness index (E) was close to 1 indicating a stable ecosystem condition. The H’ and E index based on size of yard area showed 3.74 and 0.88 (very small, <20 m²), 3.90 and 0,.89 (small, 20–50 m²), 3.44 and 0.88 (medium, 50–100 m²), 3.52 and 0.93 (big, 100–200 m²), 3.06 and 0.94 (very big, >200 m²). The results showed that suburban home garden “pekarangan” can support  quality of urban ecosystem and  its preservation. [ABSTRACT FROM AUTHOR]

This study was to evaluate the effect of plant media variation, time of fertilization, and combination of both on the growth of orchid plant Dendrobium sylvanum Rchb. f. in acclimatization phase. This study was designed using 6x4 factorial experimentation. The first factor was the variation of plant media: charcoals, coconut husk, bagasse, mixing of charcoal and coconut husk, combination of charcoal and bagasse, combination of coconut husk and bagasse. The second factor was fertilization time: no fertilization, 7 day-fertilization, 14 day-fertilization, and 20 day-fertilization for three months. The data were analysed by using Two Way MANOVA (α = 5%) and Duncan test. Based on the results, there were differences between media variation and fertilization time on the increase of leaf length and width, stem diameter, and root length of Dendrobium orchid in acclimatization phase. Combination of bagasse and coconut husk media showed the best result on media treatment. The best of fertilization time was 14 days. Moreover, the best of interaction between media and fertilization time showed by the combination of bagasse and coconut husk with 14 days-fertilization.