Judul: Telaah budidaya jamur kancing (Agaricus bisporus (Lange) Sing.) dan jamur merang (Volvariella volvacea (Bill. ex Fr.) Sing.) di proyek baros PT Tata Wisata Sukabumi
Abstrak: Saat ini jamur mulai banyak dibudidayakan karena mempunyai nilai gizi dan nilai ekonomi yang tinggi. Jamur yang dibudidayakan di Proyek Baros, PT TATA WISATA, Sukabumi terdiri dari jamur kancing dan jamur merang. Budidaya jamur kancing meliputi tahap penyediaan: bahan untuk membuat kompos, bibit jamur, tanah 'casing'. Setelah itu dilanjutkan dengan pembuatan kompos, pasteurisasi kompos, penanaman bibit, pemanenan dan penanganan pasca panen. Sedangkan pada budidaya jamur merang meliputi tahap yang sama seperti pada budidaya jamur kancing akan tetapi tanpa adanya tahap penyediaan tanah 'casing'. Pada budidaya jamur kancing, bahan utama untuk membuat kompos ialah ampas tebu, sedangkan pada budidaya jamur merang bahan utama untuk membuat kompos ialah kapas sisa pemintalan. Hasil panen yang diperoleh belum optimum karena sistem isolasi suhu udara di dalam rumah jamur kurang sempurna. Selain itu, kualitas bibit jamur yang digunakan juga mempengaruhi hasil panen yang didapatkan…dst
Keyword: 

Judul: Analisis kelayakan finansial budidaya jamur merang (Volvariella volvaceae) (studi kasus usaha agribisnis putra hasan mushroom di kecamatan Karang Bahagia, Bekasi, Jawa Barat)
Abstrak: Di Indonesia jamur merang maupun jamur lain merupakan komoditas pertanian yang memiliki prospek sangat baik untuk dikembangkan, baik untuk ekspor maupun untuk mencukupi permintaan pasar dalam negeri yang terus meningkat. Masyarakat sudah mulai mengerti akan nilai gizi jamur. Untuk budidaya jamur hanya dibutuhkan ketelitian dan modal yang tidak terlalu besar, tetapi nilai ekonominya cukup tinggi sehingga masyarakat tertarik untuk melakukan budidaya jamur merang. Salah satu masyarakat yang tertarik dan kemudian merealisasikan untuk melakukan budidaya jamur merang adalah Putra Hasan Mushroom.
Keyword: 

Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
Keyword: