KUALITAS MORFOLOGIS BIBIT SENGON (Paraserianthes falcataria L) SEBAGAI BIBIT SIAP TANAM DI PERSEMAIAN BPDASHL SIANTAN KALIMANTAN BARAT

Sengon (Paraserianthes falcataria L) is a plant planted by the West Kalimantan BPDASHL to provide seedlings for the land rehabilitation and state forests and the community.This study was conducted with the objectives of: (1) determining morphological values which include: height, diameter, robustness, root shoot ratio, seed quality index and (2) determine the correlation between age and seed quality based on the age of the seedlings before and after the age of three months. The study used a survey method with purposive sampling and random sampling. Sampling for ten seedlings was carried out random on 30 seeds selected for each age class. The data collected in the study were in the form of morphological quality consisting of height (cm), diameter (mm), wet weight, and dry weight of seedlings. Based on height, diameter, wet weight and dry weight of the seedlings, the sturdiness, shoot-to-root ratio and seed quality index were calculated. Based on the morphological quality, the age of sengon seedlings aged 3 to 3.5 months is included in the category of targeted seedlings so that they are suitable for planting in the field. The regression analysis result showed that there was a relationship between growth age and character of sengon seedlings aged 2.5 months to 4 months. As the age of the seedlings increases, the height and diameter increases. The regression of morphological characters with positive and high coefficient values indicated that seedling age had a positive relationship to seedling quality.Keywords:  morphological, quality, sengon AbstrakSengon (Paraserianthes falcataria L) merupakan  salah satu jenis tanaman yang disemaikan Balai Pengelolaan Daerah Aliran Sungai dan Hutan Lindung (BPDASHL) Kalimantan Barat untuk penyediaan bibit dalam rangka rehabilitasi lahan dan hutan negara serta masyarakat. Penelitian ini dilakukan dengan tujuan menentukan nilai mutu bibit yang meliputi : tinggi, diameter, kekokohan, rasio pucuk akar (RPA), indek mutu bibit (IMB) dan (2) menentukan korelasi umur dengan kualitas bibit berdasarkan umur bibit sebelum dan sesudah berumur tiga bulan.Penelitian menggunakan  metode survei dengan teknik pengambilan secara purposive sampling dan random sampling. Pengambilan sampel untuk 10 bibit dilakukan secara random terhadap 30 bibit yang sudah diseleksi pada masing-kelas umur. Data yang dikumpulkan dalam penelitian berupa kualitas morfologis terdiri dari tinggi (cm), diameter (mm), berat basah,dan berat kering bibit. Berdasarkan ukuran tinggi, diameter, berat basah dan berat kering bibit dihitung kekokohan, rasio pucuk akar (RPA), indeks mutu bibit (IMB). Berdasarkan kualitas morfologis maka umur bibit sengon yang berumur 3 sampai 3,5 bulan sudah termasuk dalam kategori bibit siap tanam sehingga layak untuk ditanam dilapangan. Hasil analisis regresi menunjukkan bahwa terdapat hubungan umur pertumbuhan dan karakter bibit sengon umur  2,5 bulan sampai 4 bulan. Semakin bertambahnya umur bibit ukuran tinggi dan diameter semakin meningkat. Hasil regresi karakter morfologis dengan nilai koefisien positif dan tinggi, menunjukkan bahwa umur bibit mempunyai hubungan positif terhadap kualitas bibit. Kata Kunci : kualitas, morfologis, sengon