This study attempted to develop an extraction model of spectral values of land objects into land use/land cover classes on remote sensing image in the provision of land database for planning, evaluation, and monitoring in agriculture and forestry. This study employed an Isodata method and Knowledge-Based Systems (KBS) using the Landsat 7 ETM + image in the coverage area of 117,799.06 ha, and the SPOT 5 XS image in the coverage area of 113,241.37 ha in Palu, Sigi and Donggala. The study found two image models labelled as AR4-50 and SBP-AR4-50. The separability image AR4-50 model has an average capability for separating land object pixels which are statistically 1811.98 to 1972.08 (moderategood), with the class accuracy of land use/land cover using the image homogeneity model of SBP-AR4-50, which is totally (confusion matrix) 72.15% -87.17%, the accuracy level of land map generator for agricultural land/forestry is in goodexcellent category on the Landsat 7 ETM + and SPOT 5 XS images.

Penelitian ini bertujuan untuk mengetahui kesesuaian pengaruh simultan dan parsial Sistem Kerja Latihan dan Kunjungan (LAKU) Penyuluh Pertanian Terhadap Perubahan Perilaku Petani Padi Sawah (Studi Kasus Di Kecamatan Marawola Kabupaten Sigi). Metode yang digunakan dalam penelitian ini adalah metode survei observasi lapangan, wawancara dan membagikan kuisioner terhadap 68 orang petani padi sawah sebagai responden. Teknik analisis data penelitian adalah regresi linear berganda. Hasil Uji F membuktikan bahwa Sistem Kerja Latihan dan Kunjungan (LAKU) Penyuluh Pertanian secara simultan berpengaruh signifikan terhadap perubahan perilaku petani padi sawah di Kecamatan Marawola Kabupaten Sigi. Hasil Uji t membuktikan bahwa : (1) Sistem Kerja Latihan berpengaruh positif dan signifikan terhadap perubahan perilaku petani padi sawah, (2) Sistem Kerja Kunjungan berpengaruh positif dan signifikan terhadap perubahan perilaku petani padi sawah di Kecamatan Marawola Kabupaten Sigi. Kesimpulan (1) Sistem kerja latihan dan kunjungan (LAKU) masih relevan untuk diterapkan pada era perkembangan teknologi komunikasi yang semakin terbuka dalam merubah perilaku petani padi sawah di Kecamatan Marawola Kabupaten Sigi, (2) Sistem kerja latihan dan kunjungan (LAKU) secara simultan berpengaruh terhadap perubahan perilaku petani padi sawah di  Kecamatan Marawola Kabupaten Sigi, (3) Sistem kerja latihan secara parsial berpengaruh terhadap perubahan perilaku petani padi sawah di  Kecamatan Marawola Kabupaten Sigi, (4) Sistem kerja kunjungan secara parsial berpengaruh terhadap perubahan perilaku petani padi sawah di  Kecamatan Marawola Kabupaten Sigi.

Rice is a strategic commodity, so the Government of Indonesia puts forward the standard of building a globally competitive rice farming model by increasing the Total Factor Productivity (TFP). However, until now, farm managers have had a relatively shallow understanding of the TFP concept. This study, focusing on lowland rice farming in Indonesia, identifies the factors that determine the development of the TFP. The main questions in this research are, what are the impacts of farming scale, technical efficiency, allocative efficiency, and the efficiency scale? Has lowland rice farming adopted technology to reduce wasting resources due to an inefficient use of inputs? This study used 329 cross-sectional pieces of data on small-scale rice farming. The research results indicate that lowland rice farming is in a decreasing return condition and that there is technical inefficiency. TFP tends to increase when the farm scale increases. Technical efficiency, allocative efficiency, and scale of efficiency are the main determining factors in developing TFP at the level of lowland rice farmers; of these, technical efficiency is the most important factor.

The aims of this study are to develop interpretation of structural geology in lithosequent using DEM and finite elemen method based on VES data. This research was conducted on June 2021 untill January 2022 at Pasang District, North Toraja. Four main point location were selected and recorded in google earth. Those points were processed using software QGIS for developing 3D model, Saga-GIS for interpolated DEM and VES for generating 1D and 2D geoelectrical modelling. Data were interpolated using Universal Kriging method and analysed using IP2WIN software. The results of these research shows that Geostatistical Universal Kriging can be used for interpolating DEM in lithosequent Pasang Village, by using  as the variogram equation and yield 95,12% determinations; VES method in geoelectrical resistivity can be configure into 2D and produce clearer modeling of pseudo-section; The synthetics data can be generated from field measurement data and interpretation of 2D VES; Result of synthetic block on geoelectrical data can be inverted using Finite Element Method and generated clearer data; By using these methods, the thickness of weathering layer in lithosequent Pasang Village can be estimated and modelling.

Penelitian yang bertujuan untuk mengkaji pengaruh inokulasi Rhizobium Sp. pada kedelai dalam berbagai kondisi ketersediaan air terhadap kualitas benih yang dihasilkan, telah dilaksanakan di Green house Laboratorium Teknologi Benih Faperta Untad pada bulan April sampai November 2021 dengan percobaan pot menggunakan rancangan acak lengkap (RAL). Faktor pertama adalah pemberian inokulasi Rhizobium sp. yang terdiri atas 2 macam yaitu: Inokulum Rhizobium 10 g/kg benih, Inokulum Rhizobium 15 g/kg benih, Faktor kedua adalah tingkat ketersediaan air yang meliputi: ketersediaan air 100%  (kapasitas lapangan), ketersediaan air 80%, ketersediaan air 60%, ketersediaan air 40%. Hasil penelitian menunjukkan bahwa pemberian inokulasi Rhizobium sp 15 g/kg benih meningkatkan pertumbuhan dan hasil kedelai. Hal tersebut berdampak pada pertumbuhan kedelai mampu meningkatkan secara signifikan jumlah bintil akar, berat kering bintil akar, tinggi tanaman, diameter batang, kehijauan daun dan berat 100 biji. Ketersediaan air 100% juga memberikan pengaruh yang signifikan terhadap jumlah bintil akar, berat kering bintil akar, tinggi tanaman, diameter batang, jumlah cabang produktif, kehijauan daun, jumlah biji per tanaman, berat biji per tanaman, berat 100 biji, dan proporsi ukuran biji. Terdapat interaksi antara pemberian inokulasi Rhizobium sp dan tingkat ketersediaan air terhadap tinggi tanaman dan berat 100 biji.