Abstract
Pulai (Alstonia scholaris) is a fast growing local species that can be used rehabilitation activities on peat swamp forest. This study aims to obtain information application the response of growth and quality of pulai seedlings to wood vinegar and shade. The research was carried out at orchid exsitu observation site stock and community service and in the silvicultural laboratory of Faculty of Forestry. This study applied an experimental method with a split plot design with a complete randomized design (CRD). The treatment consisted of two factors,“shading” as the main factor and kind of organic vinegar as sub factor. The results obtained were based on observations 12 weeks after planting, the growth percentage of pulai seedlings for the 100%, while ofthen variables in this study had no effect. The main factor is organic fertilizer with 2 levels: chemical fertilizer and wood vinegar, while the shade factor is a main factor that less interest. Results showed that the response of height growth was significantly higher 13.0% to chemical fertilizer than wood vinegar when planted in a shadeless condition. However, if planted in conditions with a shade of 60%, the response was no different. The response of leaves growth to fertilizer is significant when planted under different shade conditions. In the condition without shade, the response of leaves is 11.8% higher compared to wood vinegar. Conversely, in condition with shading 60%, the response the number of leaves growth on wood vinegar was 13.0% higher than that of chemical fertilizer. In this study, the concentration of wood vinegar as much as 4% was not effective enough to increase the enhance of pulai seedlings.Keywoards: Organic vinegar, pulai seedlings, shade
Highlights
PENDAHULUAN Hutan rawa gambut adalah salah satu tipe hutan rawa yang merupakan ekosistem yang spesifik dan rapuh, baik dilihat dari segi habitat lahannya yang berupa gambut dengan kandungan bahan organik dan jenis tanahnya tergolong organosol, podsol maupun humus
This study aims to obtain information application the response of growth and quality of pulai seedlings to wood vinegar and shade
This study applied an experimental method with a split plot design with a complete randomized design (CRD)
Summary
Berdasarkan hasil penelitian 12 biomassa dan rasio pucuk akar) tidak minggu setelah tanam di lapangan nyata. Pada penelitian ini faktor yang dipentingkan adalah faktor pupuk, dengan 2 taraf faktor yaitu NPK dan cuka kayu, sedangkan faktor naungan tidak begitu dipentingkan. Respons pertambahan jumlah daun lebih tinggi 11,8% dibandingkan terhadap cuka kayu. Sebaliknya pada kondisi dengan naunngan 60%, respons pertambahan jumlah daun terhadap cuka kayu lebih tinggi 13,0% dibandingkan terhadap Persentase Hidup Bibit Pulai. Hal ini berarti bahwa perlakuan naungan dan pupuk tidak berpengaruh nyata terhadap pertambahan diameter bibit pulai. Bertambahnya diameter merupakan faktor penting bagi tanaman, jika pada penelitian ini cuka kayu tidak berpengaruh nyata pada pertumbuhan bibit pulai, kemungkinan ada faktor lain diantaranya adalah cahaya. Rerata biomassa dan rasio pucuk akar bibit pulai selama 12 minggu pengamatan tidak signifikan. Berdasarkanhasil penelitian data bobot kering akar, bobot kering pucuk, tinggi dan diameter bibit pulai maka didapat hasil perhitungan nilai indeks mutu bibit. Rerata indeks mutu bibit pulai dari setiap perlakuan dapat dilihat pada Tabel 3
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