PRODUKTIVITAS GETAH PINUS PADA BERBAGAI LEBAR BIDANG SADAP DAN JENIS STIMULANSIA

Abstract

Penelitian ini bertujuan untuk menghitung produktivitas getah Pinus merkusii pada tegakan jenuh sadap, dan menganalisis pengaruh ukuran quarre dan jenis stimulan terhadap produktivitas getah. Penelitian dilakukan pada tegakan jenuh sadap dalam kelas umur X di RPH Cipayung, BKPH Bogor. Rancangan percobaan yang digunakan adalah rancangan faktorial dengan dua faktor, yaitu ukuran quarre (2 cm, 3 cm, dan 4 cm) dan jenis stimulan (kontrol, Etrat, SR-25, dan Etrat + 5% H2SO4), masing-masing diulang 10 kali. Data dianalisis menggunakan ANOVA dan uji Tukey pada taraf 95%. Hasil menunjukkan bahwa ukuran quarre dan jenis stimulan berpengaruh sangat nyata terhadap produktivitas getah. Ukuran quarre 4 cm memberikan hasil tertinggi dengan rata-rata sebesar 6,28 g/quarre/hari, diikuti 3 cm (4,67 g/quarre/hari), dan 2 cm (4,24 g/quarre/hari). Pada stimulan, SR-25 memberikan hasil tertinggi dengan rata-rata sebesar 6,62 g/quarre/hari, disusul Etrat + H2SO4 (6,27 g/quarre/hari), Etrat (4,96 g/quarre/hari), dan kontrol (2,39 g/quarre/hari). Kombinasi ukuran 3 cm dan Etrat + H2SO4 direkomendasikan sebagai perlakuan optimal karena seimbang dari sisi produksi, kelestarian pohon, dan teknis lapangan.

This study aimed to determine the productivity of Pinus merkusii resin in fully tapped stands and to analyze the effect of quarre size and stimulant type on resin productivity. The research was conducted on fully tapped stands in age class X at RPH Cipayung, BKPH Bogor. A factorial experimental design was employed with two factors: quarre size (2 cm, 3 cm, and 4 cm) and stimulant type (control, Etrat, SR-25, and Etrat + 5% H2SO4), each with 10 replications. Data were analyzed using ANOVA and Tukey’s test at the 95% confidence level. The results showed that both quarre size and stimulant type had a highly significant effect on resin productivity. The 4 cm quarre size yielded the highest average production of 6.28 g/quarre/day, followed by 3 cm (4.67 g/quarre/day) and 2 cm (4.24 g/quarre/day). Among the stimulants, SR-25 produced the highest average yield of 6.62 g/quarre/day, followed by Etrat + H2SO4 (6.27 g/quarre/day), Etrat (4.96 g/quarre/day), and the control (2.39 g/quarre/day). The combination of a 3 cm quarre size with Etrat + H2SO4 is recommended as the optimal treatment, as it offers a balance between productivity, tree sustainability, and field practicality.