Judul: Uji Laboratorium Microfertilizers Untuk Perkecambahan Benih Jelutung Rawa dan Padi
Abstrak: Deforestasi lahan gambut telah menyebabkan berbagai bencana ekologis bagi lingkungan. Program rehabilitasi menggunakan penanaman spesies adaptif jelutung rawa (Dyera polyphylla) dan padi Inpara 2 (Oryza sativa), serta pemupukan diperlukan sebagai upaya percepatan pemulihan ekosistem gambut. Penelitian ini bertujuan untuk memproduksi formula pupuk mikro berbasis limbah kelapa sawit dan menganalisis pengaruh aplikasi pupuk mikro terhadap perkecambahan jelutung dan benih padi. Pupuk yang digunakan berupa mikrokarbon teraktivasi (MT), mikrokarbon non aktivasi (MNT), mikrolignoselulosa (ML), dan mikrokristalin (MK) yang berasal dari biomassa kelapa sawit dengan konsentrasi 1%, 3%, 5%, dan 7%. Penelitian ini menunjukan bahwa pupuk berpengaruh signifikan terhadap semua parameter dalam uji perkecambahan rawa jelutung dan berpengaruh signifikan terhadap sebagian besar parameter uji perkecambahan padi, kecuali parameter laju perkecambahan. Perlakuan MK 5% menghasilkan perkecambahan jelutung rawa terbaik, sedangkan MNT 1% menghasilkan perkecambahan padi terbaik., Peatland deforestation has caused various ecological disasters for the environment. The rehabilitation program uses the planting of adaptive species of swamp jelutung (Dyera polyphylla) and Inpara 2 paddy (Oryza sativa), as well as fertilization as an effort to accelerate the recovery of the peat ecosystem. This research aimed to produce microfertilizers formula based on palm oil waste and analyze the effect of microfertilizer application on the germination of swamp jelutung and paddy seeds. The fertilizers used are activated microcarbon (MT), non-activated microcarbon (MNT), microlignocellulose (ML), and microcrystalline (MK) derived from oil palm biomass with concentrations of 1%, 3%, 5%, and 7%. Fertilizers application significantly affected all parameters in the swamp jelutung germination test and significantly impacted most of the rice germination test parameters, except for the Mean Germination Time parameter. The MK 5% treatment produced the best germination of swamp jelutung, while MNT 1% produced the best paddy germination.
Keyword: jelutung, microfertilizers, paddy, peat soil

Judul: Application of Microfertilizers and Seed Bomb on the Growth of Swamp Jelutung (Dyera polyphylla (Miq.) Steenis) and Paddy (Oryza sativa L.) on Peat Soil
Abstrak: Degradasi lahan gambut membutuhkan percepatan rehabilitasi melalui pemilihan spesies seperti Jelutung rawa (Dyera polyphylla) dan padi Inpara 2 (Oryza sativa) serta pemupukan menggunakan limbah kelapa sawit (LKS) dengan teknik penanaman aeroseeding dan seed bomb. Penelitian ini bertujuan untuk i) memproduksi microfertilizers berbasis limbah kelapa sawit, ii) menganalisis pengaruh aplikasi microfertilizers, dan iii) menganalisis perbedaan bentuk media tanam (seed ball dan seed box) terhadap pertumbuhan jelutung rawa dan padi di tanah gambut. Rancangan percobaan pertumbuhan menggunakan Rancangan Acak Lengkap (RAL) dengan faktor pemberian microfertilizers, yang terdiri atas micro-crystalline cellulose (MK), micro-lignocellulose (ML), activated micro-carbon (MT), dan non-activated micro-carbon (MNT) dengan konsentrasi 1%, 3%, 5%, dan 7% dan faktor bentuk media tanam. Hasil penelitian menunjukkan bahwa aplikasi MK3% (seed box) dan MK7% (seed ball) menghasilkan pertumbuhan tertinggi dengan nilai pembobotan sebesar 76. MK1% (seed ball) menghasilkan pertumbuhan tertinggi padi dengan nilai pembobotan sebesar 63., Peatland degradation requires accelerated rehabilitation through species selection such as swamp Jelutung (Dyera polyphylla) and Inpara 2 paddy (Oryza sativa) and fertilization using palm oil waste (LKS) with aeroseeding techniques using seed bombs.This research aimed to i) produce microfertilizers based on oil palm, ii) analyze the effect of microfertilizers application, and iii) analyze the different forms of planting media (seed ball and seed box) on the growth of swamp jelutung and paddy in peat soil. The design of the growth experiment used a completely randomized design (CRD) with the factor of microfertilizers, consisting of micro-crystalline cellulose (MK), micro lignocellulose (ML), activated micro-carbon (MT), and non-activated micro-carbon (MNT) with concentrations of 1%, 3%, 5%, and 7% and the factor of treatment media form. The results showed that the application of MK3% (seed box) and MK7% (seed ball) produced higher growth of swamp jelutung with a score of 76. MK1% (seed ball) produces higher growth of paddy tillers with a score of 63.
Keyword: oil palm waste, peat rehabilitation, seed ball, seed box

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology