Charis Al Faiz Pengarang

Pemberian H2SO4 dan Ekstrak Bawang Merah Terhadap Uji Vigor Benih Kopi Robusta (Coffea robustaL), (Provision of H2SO4 and Shallot Extract Toward Vigor Test of Robusta Coffee Seed (CoffearobustaL)) Charis Al Faiz Study Program Of Seed Production Technique Majoring Of Agricultural Production Program Studi Teknik Produksi Benih Jurusan Produksi Pertanian ABSTRACT The phase of seeding of coffee plants using seeds, takes a long time until the phases of pepper are characterized by the growth of 2 leaves of blooming institusions, takes between 2,5 – 3,0 months. Giving H2SO4 aims to soften lignin layer is very strong, hard and thick on the skin of seeds and giving substance growth (ZPT) by immersion will stimulate seed germination because it will trigger growth hormone. This research has been carried out in July 2017 – October 2017 in greenhouse and experimental field of Polytechnic of Jember . This research was conducted by using Factorial Randomized Complete Random Design (RAL) consisting of 2 factors, first factor consist of 4 levels is (H0) without giving H2SO4, (H1) H2SO4 10%, (H2) H2SO4 15%, (H3) H2SO4 20%. The second factor consisted of 4 levels,ie (B0) without soaking of Shallot Extract, (B1) immersion of Shallot Extract 10%, (B2) immersion of Shallot Extract 30%, (B3) immersion of Shallot Extract 50%, and using 3 replications. Data were analyzed using F (ANOVA) test followed by 5% BNT. The result of research show that H2SO4 giving effect on Robusta Coffee vigor test on Percentage of Germination (%), Growth Velocity (Kct), Maximum Growth Potential (%), and Vigor Index (%). Soaking with Shallot extract has an effect on Vigor Index (%), Root length (cm), Hypocothyl Height (cm), Average Hypocothyl / week (cm), and Time to open the leaf (HSS). There was a significant different interaction between the two treaments on the Germination Power (%) parameter. Key words: Vigor, ShallotExtract, Dormancy, Robusta