This study aims to examine the characteristics of Ultisol soil and produce a system of naming Ultisol soil according to the USDA Land Taxonomy system in Indrajaya District, Pidie District. This research will be carried out in the villages of Gle Gapui, Tuha Suwiek and Masjid Suwiek Indrajaya sub-districts from June to November 2015. This study uses descriptive-quantitative method, which consists of the following stages: (1) Preparation, ie collecting secondary data such as climate data, maps etc. Then prepare the tools and materials for the field survey and establish the ground pedon (2) Field activities, including observation of soil profile, soil sampling, laboratory analysis. Subsequently classified the land based on the USDA Land Taxonomy System Profile Gle Gapui climber determinant (horate Bt) textured clay where there is increasing clay so it is included into the horizontal horizon. Content weight value is inversely proportional to permeability and porosity. The soil reaction is directly proportional to the saturation of base which is equally low. The content of C- organic, P is available and N total is low. Moderate Cation Exchange Capacity, exchangeable acids (H and Al) are high. The classification of Ultisol soil in the location of the Glealing Glean profile is Typic Hapludult, berliat, blend, isohipertermik.

Soil surface charge and cation exchange are important parameters of soil fertility in tropical soils. This study was conducted to investigate characteristics of surface charges and cation exchanges on four soil orders of the dryland in  Aceh Besar district. The soil order includes Entisols Jantho (05o16’58.41” N; 95o37’51.82” E), Andisols Saree (05o27'15.6" N; 95o44'09,1" E), Inceptisols Cucum (05º18’18,37” N; 95º32’48,04” E), dan Oxisols Lembah Seulawah (05o27’19,4” N; 95o46’19,2” E). The charge characteristics of surface charge are evaluated from the parameter of DpH (pHH2O-pHKCl), variable charge (Vc), permanent charge (Pc), and point of zero charges (PZC). In contrast, cation exchange properties are evaluated from several soil chemical properties, such as soil organic matter (SOM), base saturation (BS), cation exchange capacity (CEC), and effective CEC (ECEC). The results show that the four pedons of soil in the hilly dryland of Aceh Besar include a variable charge because it has a PZC, which is characterized by a negative surface charge with a PZC of pHH2O and has CEC dependent soil pH. PZC value varies from 3.21 – 5.26 and sequentially PZC Andisols Oxisols Entisols Inceptisols. The total CEC value differs considerably from ECEC and the sum of cations. CEC total of the soils varies from 12.8 – 34.4 cmol kg-1, whereas the ECEC values vary from 2.72 – 8.66 cmol kg-1. The highest variable charge percentage is found in Andisols Saree. In contrast, the highest permanent charge is found in Inceptisols Cucum and is positively correlated with pHH20, PZC, CEC, and sums of cations or ECEC. Improving soil quality in hilly dryland soils in Aceh Besar District can be done by decreasing the PZC status of soils with organic amendments and fertilizers or increasing the pH by using liming.

Sugarcane Bagasse is one of the wastes come out from the sugarcane water milling which is currently very much and very abundant in Pidie. Since this garbage cannot naturally disintegrate, it might harm the environment. One way to manage the sugarcane bagasse is by processing become compost. This study examined the results of sugarcane bagasse composting by using a reduction treatment in material size and the addition of several types of bioactivators that aim to accelerate the composting process and obtain the results that fulfil the requirements qualified. This study compraised of two factors, namely the reduction of size material factor and the type of bioactivator factor by using the Completely Randomized Design method. The results showed that the lowest value of C-Organic was obtained in the milling treatment and Orgadec bioactivator, N-total was obtained from manual counting treatment and MA11 bioactivator, the best C/N ratio was obtained in the milling treatment and Orgadec bioactivator, also the highest organic matter value was obtained in manual counting and EM4 bioactivator. Keywords : Compost, Sugarcane Bagasse, EM4, MA11, Orgadec

Limbah merupakan bahan yang terbuang atau dibuang dari suatu aktivitas manusia atau proses alami yang belum mempunyai nilai ekonomi dan mencemari lingkungan. Limbah organik dapat dimanfaatkan menjadi pupuk organik yaitu kompos. Kompos dapat dimanfaatkan untuk pupuk tanaman. Tujuan penelitian ini adalah untuk mengetahui pengaruh jenis limbah dan lama fermentasi serta untuk mengetahui ada tidaknya interaksi antara keduanya. Penelitian ini dilaksanakan di ruangan tertutup Fakultas Pertanian Universitas Jabal Ghafur mulai tanggal 23 Juni sampai 03 Agustus 2019. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) Faktorial yang terdiri dari dua faktor yaitu faktor jenis limbah dan lama fermentasi, diperoleh 9 kombinasi perlakuan dengan 3 ulangan. Secara keseluruhan diperoleh 27 satuan percobaan. Faktor jenis limbah (L) terdiri dari limbah ampas kelapa (L1), limbah ampas tebu (L2), limbah kulit ubi (L3). Faktor lama fermentasi (F) terdiri dari 25 hari (F1), 40 hari(F2) dan 55 hari (F3). Parameter yang diamati yaitu N-total, C-Organik, Rasio C/N dan bahan organik. Hasil penelitian menunjukkan bahwa faktor jenis limbah berpengaruh sangat nyata terhadap N-total, C-Organik dan bahan organic sedangkan C/N tidak berpengaruh nyata. Faktor lama fermentasi tidak berpengaruh nyata terhadap semua parameter yang dianalisis serta tidak terdapat interaksi yang nyata antara jenis limbah dan lama fermentasi yang berbeda.Kata kunci : Limbah, Ampas Tebu, Ampas Kelapa, Kulit Ubi, Kompos