Judul: Identifikasi Ganoderma Pada Tanaman Kelapa Sawit Berbasis Reflektansi Gelombang Multispektral.
Abstrak: Basal Stem Rot (BSR) adalah penyakit fatal yang disebabkan oleh jamur Ganoderma boninense. Saat ini di Indonesia identifikasi pohon kelapa sawit yang menderita BSR dilakukan dengan cara mengecek pohon kelapa sawit satu per satu dan menekan batang pohon kelapa sawit tersebut. Maka dari itu diperlukan sebuah metode untuk mendeteksi BSR. Penelitian ini bertujuan mengevaluasi serangan Ganoderma dengan menggunakan kamera multispektral, menerapkan metode jaringan syaraf tiruan untuk menganalisa citra NDVI, dan menganalisis pengaruh ketinggian terhadap akurasi kinerja kamera multispektral. Alat yang digunakan pada penelitian ini adalah Unmanned Aerial Vechicle (UAV) Phantom 4, kamera multispektral parrot sequoia, dan perangkat lunak pengolah citra dan data. Pada penelitian ini, data spektral tanaman kelapa sawit diambil melalui udara pada ketinggian 50 m, 60 m, dan 70 m dengan UAV dan kamera multispektral dan kemudian data spektral tersebut dianalisa menggunakan jaringan syaraf tiruan untuk mengidentifikasi tanaman kelapa sawit yang terserang Ganoderma dan tanaman kelapa sawit yang sehat. Hasil pada penelitian ini menyimpulkan bahwa kamera multispektral dapat mengidentifikasi tanaman kelapa sawit yang terserang Ganoderma pada ketinggian 50 m dan 60 m dengan bantuan jaringan syaraf tiruan, namun pada ketinggian 70 m sudah tidak berkerja dengan baik karena noise yang terlalu banyak dan kecilnya sinyal yang ditangkap sensor.
Keyword: basal stem rot, Ganoderma, kamera multispektral, UAV, tanaman kelapa sawit, basal stem rot, Ganoderma, kamera multispektral, UAV, tanaman kelapa sawit

Judul: Identifikasi Ganoderma spp. Menggunakan Teknik DNA Barcoding
Abstrak: Oil palm is one of comodity plantation which is very important. One of the problems faced by the oil palm plantations are disease, namely Basal Stem Rot (BSR) which caused by Ganoderma spp. If plants were attacked by BSR, sooner or later, they would die and the production will decreased significantly. Consequently, in order to have an effective control of Ganoderma, an accurate identification is needed. This could be achieved by molecular techniques through DNA Barcoding method. The aim of this study was to is to find a specific primer for the identification of Ganoderma spp. that attack estate crops and their shade trees. Based on this research, it showed that the primer pair ITS1_F/ITS4_B has a high percentage of the ability to identify isolates of Ganoderma spp. compared with the other primer pairs, which are primer BenA F/ BenA_R, Gan_ITS1_F/Gan_ITS1_R, CO1_PenF1/CO1_PenR1, CO1_B_F/ CO1_B_R, and Gan_ITS2_F/Gan_ITS2_R. The primer pair ITS1_F/ITS4_B had a potential as a DNA barcode for identification of Ganoderma species.
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Judul: Adsorption of Cu(II) using synthetic Zeolite from coal fly ash
Abstrak: Fly ash and synthetic zeolite synthesized from coal fly ash had been used to investigate the adsorption of Cu2+ synthetic solution. Optimation studies of adsorption process was performed batch system in central composite design with three parameters, pH, contact time, and concentration of adsorbent. The optimum condition for adsorption process for fly ash and synthetic zeolite were found at pH 5.5 and 4, contact time 83 and 58 minutes, and adsorbent concentration at 150 and 90 mg/50 mL solution respectively. The Langmuir and Freundlich isotherm models were applied. The Langmuir models fits best the equilibrium isotherm data. The optimum fly ash and zeolite synthetic adsorption capacities were 4,11 mg/g and 60,97 mg/g respectively. The kinetics data were tested using a pseudo first-order and a pseudo second-order Lagergren equation. Kinetics data correlated well with the pseudo second-order kinetics model. Thermodinamic study indicated that adsorption process was spontaneous and accompanied by an increase in entropy and decrease in Gibbs energy. The decreasing of adsorption capacity of Cu(II) by both fly ash and synthetics zeolite were influenced by the coexisting ions Pb(II) or Mn(II), although there were increasing of the total adsorption capacity.
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