Judul: Pemanfaatan Kompos Organik untuk Pertumbuhan Semai Lamtoro (Leucaena leucocephala) dan Sorgum (Sorghum bicolor L.) di Lahan Persemaian Maubara, Kabupaten Liquisa Timor Leste
Abstrak: Agroforestry between sorghum (Sorghum bicolor L.) and lamtoro (Leucaena leucocephala) need an additional compost to preserve land fertility. Compost is an organic material which is an important soil amendment for plant growth. Compost improves a soil structure by improving soil organic material content and improves soil capacity in soil water content. Beneficial microbial activity will be improved with additional compost. Improvements of soil physical condition as one of necessity to return the land that were damaged. This research aims to measure the effect of compost fertilizer towards lamtoro growth and sorghum in dry land. The experimental design used for this research was Completely Randomized Block Design (CRBD) of single factor with dose of compose 0 ton/ha (control), 4 ton/ha and 8 ton/ha in three replicates and 100 m² as the experimental unit of research area. The effect of fertilizer dosage towards height plant, plant diameter, seeds weight, leaf weight of sorghum and lamtoro were measured. Various respons were obtained due to climate factor, soil factor and plants. The effect of fertilizer dosage to height, diameter of lamtoro and sorghum was observed during 3 months. Fertilizer dosage treatment 0 kg/100 m² gave 121.7 cm, 40 kg/100 m² gave 119.37 cm and 80 kg/100 m² 119.90 cm for height of lamtoro. Base on this research, it was known that utilization of fertilizer at dosage of 8 ton/ha was the most excellent respons than the dosage of 4 ton/ha and 0 ton/ha.
Keyword: Bogor Agricultural University (IPB), organic compost and sorghum, lamtoro seedling

Judul: Pemanfaatan Pupuk Organik Granular dari Limbah Destilasi Etanol Sorgum untuk Pembibitan Leda (Eucalyptus deglupta) pada Tanah Andosol, Latosol, dan Podzolik
Abstrak: Sorghum (Sorghum bicolor L Moenc) is a plant that can be used for food, feed, and energy (ethanol). There are two types of waste in ethanol production, liquid and solid waste (baggase). Liquid waste was produced from ethanol distillation process, rich in nutrients as fertilizer, but there is still limited information about its nutritional content, especially for producing forestry seedlings. There are two types of organic fertilizer those are liquid organic fertilizer (LOF) and granular organic fertilizer (GOF). This experiment examined the effect of the GOF of Sorghum liquid waste to leda seedling growth in different soil type of Andosol, Latosol, and Podzolik, and also to find the exact dose of GOF for leda seedling growth in each type of soil. Factorial in Completely Randomized Design was used in this experiment. The result showed, that application of GOF effected to almost all the growth parameters on three soil types. Best seedling quality index (SQI) of leda was found in the combination of Andosol and 20 granules of GOF with SQI 30 points, while the SQI value of both interaction was 30 points out of 30 points.
Keyword: sorghum, podzolik, Latosol, granular organic fertilizer, andosol

Judul: Pendugaan parameter model hidden markov dan deret waktu hidden markov
Abstrak: Hidden Markov adalah suatu model yang merupakan gabungan dari kejadian yang diamati dan faktor penyebab terjadinya suatu kejadian (stare) yang tidak diamati secara langsung. Dalam model ini diasumsikan faktor penyebab terjadinya suatu kejadian berkemban,= menurut aturan rantai Markov di mana state saat ini hanya dipengaruhi oleh state kemarin dan bebas terhadap state yang lalu.
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