Conservation is an effort to return natural resources to their habitat to restore the ecosystem balance, which can be done in-situ and ex-situ. Coelogyne rochussenii orchid conservation efforts are essential to maintain its sustainability. The purpose of this study was to characterize C. rochussenii orchids from Bukit Rimbang and Bukit Baling Wildlife Sanctuary as a source of tissue culture explants to support ex-situ conservation efforts. Orchid plant samples were obtained through exploration in three locations with an altitude of 92 masl, and then the characterization of leaf morphology, pseudobulbs, roots, and fruit were carried out. The characterization results showed that the young pseudobulbs, young leaves, healthy roots, and physiologically ripe fruits of the C. rochussenii orchids obtained could be used as a source of explants to support ex-situ conservation efforts.Keywords: ex-situ conservation, physiologically mature, young pseudobulbs

The research objective was determine the effect of various growth media and growmore fertilizer on the acclimatization of Dendrobium orchids. study used a Completely Randomized Design (CRD) Factorial consisting of 2 factors, the first is (M) of growing media which consists of 3 levels, namely: M1 (medium fern root), M2 (wood charcoal medium), M3 (coir media coconut) and the second is (G) growmore fertilizer which consists of 4 levels, namely: G0 (without Growmore fertilizer), G1 (Growmore fertilizer 2 g / liter), G2 (fertilizer Growmore 4 g / liter), G3 (Growmore fertilizer 6 g / liter). Determine the growth of orchid plants, observations were made with the following parameters Growth Percentage (%), Plant Height (cm), Number of leaves (strands), and Number of tillers (stems). Data obtained were analyzed statistically, then continued with the Honestly Significant Difference Test (BNJ) at the level of 5%. The results showed that the single treatment of the use of growing media did not have a significant effect on the parameters of observation of growth percentage (%), plant height (cm), number of leaves (strands), and number of tillers (stems). The growth of growmore fertilizer also did not show a significant effect on the parameters of observation of growth percentage (%), plant height (cm), number of leaves (strands), and number of tillers (stems). Interaction of the use of various growth media and growmore fertilizer did not show a significant effect on the percentage of growth (%), plant height (cm), number of leaves (strands), and number of tillers (stems).

Growing vegetable crops such as lettuce, on Ultisol soil has several obstacles, such as insufficient organic matter and nutrients in the soil. The provision of biochar and POC leri or organic fertilizer from rice washing liquid is expected to be a long-term and sustainable solution. This study was intended to test the addition of biochar to the growing media and the application of leri on lettuce cultivation. This study used a factorial Randomized Block Design (RAK) method. The first factor was the application of biochar to the planting medium (M), which consisted of M1: Ultisol without biochar and M2: Ultisol + 30 g biochar. The second factor was the administration of liquid organic fertilizer (LOF) leri (P), with 5 treatments consisting of P0: without giving LOF leri, P1: giving LOF leri without fermentation once a week, P2: giving LOF leri without fermentation twice a week, P3: giving fermented LOF leri once a week, P4: giving fermented LOF leri twice a week. The results of this study were tested statistically by analysis of variance, with the F test; if there was a significant difference, it was continued with the BNJ test (Honest Significant Difference) at a 0.05 level. The results showed that the best treatment of LOF leri in increasing lettuce growth and yield was 25% fermented LOF leri given 2 times a week, at 250 mL per lettuce plant. As a single treatment the best growing media was M2 (Ultisol soil + 30 g of biochar) with a plant height of 25.80 cm and the leaf number of 12.83; whereas the best LOF leri treatment was P4 (fermented LOF leri given twice a week), with a plant height of 30.27 cm and leaf number of 14.42. Based on whole plant fresh weight, the best treatment was the M2P4 (Ultisol + biochar growing medium and fermented LOF leri given week), which was 185.99 g per plant. Keywords: household waste, lettuce, POC leri, rice washing liquid   ABSTRAK Melakukan budidaya tanaman sayuran, seperti selada, pada tanah Ultisol memiliki beberapa kendala, seperti kurangnya bahan organik dan unsur hara pada tanah tersebut. Pemberian biochar dan POC leri atau pupuk organik dari cairan cucian beras diharapkan dapat menjadi solusi yang bersifat jangka panjang dan berkelanjutan. Penelitian ini dimaksudkan untuk menguji penambahan biochar pada media tanam dan pemberian leri pada budidaya selada. Penelitian ini menggunakan metode Rancangan Acak Kelompok (RAK) faktorial. Faktor pertama adalah pemberian biochar pada media tanam (M), yang terdiri dari M1: Ultisol tanpa biochar dan M2: Ultisol + 30 g biochar. Faktor kedua adalah pemberian pupuk organic cair (POC) leri (P), dengan sebanyak 5 perlakuan yang terdiri dari adalah P0: tanpa pemberian POC leri, P1: pemberian POC leri tanpa fermentasi 1 kali seminggu, P2: pemberian POC leri tanpa fermentasi 2 kali seminggu, P3: pemberian POC leri fermentasi 1 kali seminggu, P4: pemberian POC leri fermentasi 2 kali seminggu. Hasil penelitian ini diuji secara statistik dengan analisis ragam, dengan uji F; bila terdapat perbedaan nyata dilanjutkan dengan uji BNJ (Beda Nyata Jujur) pada taraf 0,05. Hasil penelitian menunjukkan perlakuan POC leri yang terbaik dalam meningkatkan pertumbuhan dan produksi selada adalah 25% POC leri fermentasi yang diberikan 2 kali seminggu, sebanyak 250 mL per tanaman selada. Secara tunggal perlakuan media tanam terbaik adalah M2 (tanah Ultisol+ 30 g biochar) dengan tinggi tanaman 25,80 cm dan jumlah daun 12, 83 helai; sedangkan perlakuan POC leri terbaik adalah P4 (POC leri fermentasi yang diberikan 2 kali seminggu), dengan tinggi tanaman 30,27 cm dan jumlah daun 14,42 helai. Berdasarkan berat basah tanaman, yang terbaik adalah pada perlakuan M2P4 (media tanam Ultisol + biochar dan POC leri fermentasi yang diberikan 2 kali seminggu), yaitu 185,99 g per tanaman. Kata kunci: cairan cucian beras, limbah rumah tangga, POC leri, selada

The main problem in this research is Payment of Postpaid Electricity Account at PT. PLN Persero Batusangkar According to law Number 08 of 1999 on consumer Protection and ShariaEconomic Law. This study aims to determine whether the system of electricity bill payment at PT. PLN Persero Batusangkar has been in line with the existing laws in Indonesia and the view of IslamicLaw. Type of research is field research. Data collection techniques used are observation, interviews, and documentation. Data analysis tecnique is done by data reduction, data presentation, and conclusion.

Pemanfaatan tanah ultisol untuk budidaya jagung dihadapkan dengan masalah miskinnya bahan organik dan hara pada tanah tersebut. Penelitian ini memiliki tujuan yaitu 1) mengetahui efektifitas pupuk hijau kirinyuh dalam mensubstitusi pupuk yang mengandung N dan K. 2) Untuk memperbaiki sifat kimia tanah Ultisol yang mendominasi di kabupaten Kuantan Singingi ini. Penelitian ini dilaksanakan di Desa Koto Kari Kabupaten Kuantan Singingi. Penelitian menggunakan rancangan acak kelompok yang terdiri dari 6 perlakuan dengan 3 kelompok.  Perlakuan yang diberikan adalah A = Puhi Kirinyuh 20 ton/ha + 25% N dan K pupuk buatan , B = Puhi Kirinyuh 20 ton/ha + 50% N dan K pupuk buatan, C = Puhi Kirinyuh 20 ton/ha + 75% N dan K pupuk buatan,  D = Puhi Kirinyuh 20 ton/ha + 100% N dan K pupuk buatan, E = 100% pupuk buatan saja, dan  F = Tanpa masukan apapun (kontrol). Berdasarkan penelitian dapat disimpulkan bahwa perlakuan terbaik dalam mensubtistusi NK pupuk buatan terdapat pada perlakuan C (Puhi Kirinyuh 20 ton/ha+ 75% NK pupuk buatan ) dengan efektifitas sebesar 185,68 % pada tinggi tanaman, 181,98 % pada berat tongkol tanpa kelobot dan 163,01 % pada berat pipilan kering dibandingkan kontol dan per lakuan lainnya. Inkubasi kirinyuh selama dua minggu didalam tanah pada perlakuan  A, B, C dan D dengan dosis 20 ton/Ha menunjukkan perubahan sifat kimia tanah Ultisol yaitu terjadi peningkatan hara N sekitar 0,10-0,11% dibandingkan tanah awal (kriteria rendah) menjadi kriteria sedang dan meningkatkan K-dd tanah dari kriteria rendah menjadi sedang yaitu dari 0,14 me/100 gram menjadi 0,24-0,25 me/100 gram tanah