Judul: Optimasi Dosis Pemupukan Kalium pada Budi Daya Tomat (Lycopersicon esculentum) di Inceptisol Dramaga
Abstrak: This research objective was to find the optimum rate of potassium fertilizer for specific location of tomato cultivation in inceptisol Dramaga with high soil potassium content (231 ppm). The experiment was conducted at Cikabayan Teaching Farm IPB from July to October 2014. The experiment was arranged in Randomized Completely Block Design with four replications and single treatment factor which was potassium rate in five levels ie 0X (0), ¼X (152.2 kg ha-1), ½X (304.3 kg ha-1), ¾X (456.3 kg ha-1), and X (608.6 kg ha-1). The results showed that on high soil potassium content potassium fertilizer were not affect all of the measured variables, therefore K fertilization is unnecessary.
Keyword: Bogor Agricultural University (IPB), potassium., optimation, nutrient rate, inceptisol

Judul: Optimasi Dosis Pupuk Anorganik dan Pupuk Kandang Ayam pada Budidaya Tomat Hibrida (Lycopersicon esculentum Mill. L.).
Abstrak: The objective of this research was know the effect of fertilizer and manure to growth and productivity of hybrid tomato (Lycopersicon esculentum Mill. L).This research obtained at Pasir Sarongge Experimental Field University Farm Bogor Agricultural University, Cipanas, from February to July 2011. The experimental design used was Completely Randomized Block Design, with two factors and three repetitions. First factor was manure dosages which were 0, 10, 20, and 30 ton ha-1. Second factor was fertilizer dosages which were 0%, 75%, and 150% of recommended dosage. Recommended dosage use was 100 kg ha-1 N, 100 kg ha-1 P2O5, and 50 kg ha-1 K2O, recommendation from Ministry of Agriculture (2002). Plant height showed quadratic response to manure at 2 and 4 week after transplanted (WAT), then linier at 6 WAT. As to fertilizer, plant height showed no response at 2 WAT yet showed linier response at 4 and 6 WAT. Interaction between manure and fertilizer happened at 8 WAT. Manure gave linier response to number of leaves at 2, 4, and 8 WAT but not significant at 6 WAT. Fertilizer gave no significant response at number of leaves. Manure gave quadratic response as fertilizer gave linier response to fruit weight per plot, fruit weight per hectare estimation, and relative yield. Optimal manure dosage given from this research was 24.375 ton ha-1. Maximum fruit weight per plot was 17.41 kg per plot. Maximum fruit weight per hectare estimation was 22.79 ton ha-1. Manure gave linier response to fruit weight per plot of grade A and B. Fruit weight per plot of grade C, fruit diameter, and average fruit weight was not affected by manure or fertilizer given.
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Judul: Pengembangan model markov tersembunyi pada identifikasi pembicara
Abstrak: Model Markov Tersembunyi merupakan suatu model yang tersusun dari dua buah proses stokastik, yaitu rantai Markov untuk menampung kemajuan temporal dan proses yang teramati untuk menampung variasi akustik. Model ini dapat digunakan sebagai metode pencocokan pola pada sistem identifikasi pembicaraan. Setiap model mewakili referensi pola dari seorang pembicara di dalam sistem identifikasi pembicara.
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