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: Efektivitas Pupuk Organik Granul terhadap Pertumbuhan, Produksi dan Kadar Hara NPK Daun Jagung Manis pada Latosol Dramaga
Abstrak: Latosol fertility is generally low due to low nutrient availability and organic matter content, so addition of anorganic fertilizer only will not provide optimal production of plants. Therefore, additional of organic fertilizer must be done. The objective of this research is to study the effectiveness of granulated organic fertilizer which was combined with standard fertilizer on the growth, production, and NPK contents of sweat corn leaves in Latosol Dramaga. The field experiment was conducted in the University Farm IPB, from Februari to August 2012. The nutrient content was analyzed in the Laboratory of Soil chemistry and Fertility, Faculty of Agriculture, IPB. The design of research was completely randomized block design with single factor, that was combination of anorganic fertilizer (standard) with organic fertilizer, which consisted of 7 treatments: control, standard, 50% standard + 100% organic (0,5S+1PO), 50% standard + 150% organic (0,5S+1,5PO), 75% standard + 100% organic (0,75S+1PO), 75% standard + 150% organic (0,75S+1,5PO), and 100% standard + 100% organic (1S+1PO). The result of the research showed that the granulated organic fertilizer increased of growth, production of corn, and nutrient content of corn leaves effectively. The two treatment combinations (1S+1PO) and (0,75S+1PO) showed the best performance, which was indicated by the weight of corn with huskcover and value of RAE i.e. 15,58 t/ha and 162,07% (1S+1PO), and 13,97 t/ha and 128% (0,75S+1PO), respectively. The effect of both treatment combinations above were higher than standard treatment (12,58 t/ha and 100%).
Keyword: 

Judul: Hubungan kausalitas inflasi IHK (Indeks Harga Konsumen) dan inflasi inti dengan analisis VAR
Abstrak: Inflasi inti, yang dihitung setiap bulan, dapat berperan dalam perumusan kebijakan moneter karena mampu menjadi indikator inflasi yang lebih tegar dalam mengantisipasi kejutan-kejutan temporer. Analisis VAR digunakan dalam pengujian kausalitas peubab inflasi IHK dan inflasi inti untuk mengetahui adanya pengaruh dari kejutan-kejutan temporer yang terdapat pada peubah inflasi IHK terhadap inflasi inti dan sebaliknya. Hasil uji kausalitas memperlihatkan kedua peubah tidak memiliki hubungan sebab-akibat atau dapat dikatakan bahwa kedua peubah bergerak secara bersamaan. Hal tersebut mengindikasikan tidak adanya pengaruh lag pada kedua peubah tersebut. Dengan demikian analisis regresi biasa dapat digunakan untuk mengetahui hubungan antar dua peubah. Hasil analisis dekomposisi keragaman menunjukkan peubah inflasi IHK merupakan peubah bebas dan inflasi inti sebagai penbah tak bebasnya. Persamaan regresi yang dihasilkan adalah inflasi inti= 0.3578+0.2889 inflasi IHK Berdasarkan analisis respon impuls baik peubah inflasi IHK maupun inflasi inti merespon kejutan yang terdapat pada dirinya atau pada peubah lainnya dengan cepat. Pada periode kurang dari setahun kejutan tersebut sudah hilang pengaruhnya.
Keyword: Uji kestasioneran, Uji kointegrasi, Uji lag, Uji Portmanteu, Vector Auto Regression