Judul: Perkembangan, klasifikasi dan potensi tanah sawah tadah hujan dari bahan lakustrin di Paguyaman, Gorontalo
Abstrak: Efforts to increase and develop paddy soil other than irrigated paddy soil (IPS) are essential in order to improve rice production. Rainfed paddy soil (RPS) is the second granary national after IPS, although current productivity of RPS is low and it has complex limiting factor. The objective of this research were: (1) to study the development of RPS based on soil characteristics and genesis, (2) to identify the main factors influencing the formation of soil profiles, (3) to classify the soil according to Soil Taxonomy classification system, and (4) to evaluate land potency for rice and corn. The research was carried out on 9 pedons from lacustrine materials on E4 agroclimate zones. RPS and upland (UL) pedons are located in Sidomukti of Gorontalo Regency and Molombulahe of Boalemo Regency. While, the IPS pedon are Bandungrejo of Gorontalo Regency. Field observations were done throughout toposequent transect on the lower, middle and upper slope position. Soil samples taken from each horizon of each pedon for laboratory analysis. The observed parameters were morphological characteristics, physical, chemical and mineralogical properties of the soil. The data were analyzed with quantitative and qualitative analysis. Soils were classified based on Soil Taxonomy system, whereas land potentials were evaluate by land suitability analysis with the parametric approach. Land suitability classes (LSC) were determined by Square Root Land Index Method. The results of this study showed that all pedons have B horizon but IPS is more developed than the RPS and the UL. The IPS pedon is more weathered intensively than the RPS and the UL. The main genesis process in all pedon were eluviation, illuviation, lessivage, pedoturbation, braunification and gleization, except for UL pedon from Molombulahe that do not reflact gleization process. The main factors of soil formation were climate, age (time), topography and human activity. The soil classification of PNS1, PNM1 and PNM2 pedon were classified as Ustic Endoaquert, fine, smectitic, isohypertermic; PNS2 pedon classified as Vertic Endoaquept, fine, smectitic, isohypertermic; PNS3 pedon classified as Vertic Epiaquept, fine, smectitic, isohypertermic; PNS-LK pedon classified as Typic Eutrudept, fine loam, smectitic, isohypertermic; PNB pedon classified as Ustic Epiaquert, fine, mixed, active, isohypertermic; PNM3 pedon classified as Aeric Epiaquept, fine, smectitic, isohypertermic; and PNM-LK pedon classified as Typic Eutrudept, fine, smectitic, isohypertermic. The highest LSC of land utilization types (LUT) for local paddy was highly suitable (S1), while the lowest one was not suitable (Nna). The highest LCS of paddy-corn and paddy-corn-corn LUTs was marginally suitable with nutrient availability and water as a limiting factor (S3na and S3wa), while the lowest LSC was not suitable cause same limiting factors (Nna and Nwa). The potency of RPS similar to potency of IPS. The full recommendation of LUT were LUT of local paddy with B (100% of recommended dosage) and C pattern (prescription dosage), except for Inceptisol from Molombulahe consist of local paddy LUT to A (none fertilizing), B and C pattern. The Other LUTs were including requiring recommended and not recommended.
Keyword: 

Judul: Evaluation of Characteristics of Physical Properties, Chemical Properties and Soil Quality of Post-Harvest Paddy Soil (Case Study: Tuban, East Java)
Abstrak: Tanah sawah pasca panen memiliki sifat yang berubah dan berbeda dengan kondisi ketika sawah diairi, meskipun merupakan kelanjutan dari sifat sebelumnya. Sifat yang berbeda perlu dievaluasi untuk mengetahui kualitas dan tingkat kesuburannya. Penelitian bertujuan mengevaluasi karakteristik sifat fisika dan kimia tanah sawah pasca panen di Tuban, Jawa Timur dan menentukan kualitas tanah serta potensinya untuk penanaman palawija. Metode penelitian menggunakan metode Principal Component Analysis (PCA) dan Minimum Data Set (MDS) dari parameter yang mewakili fungsi tanah untuk analisis kualitas tanah. Parameter yang dianalisis adalah tekstur, bobot isi, pori air tersedia, permeabilitas, C-organik, N total, P-tersedia (P2O5), Kalium dapat ditukar (K-dd), dan Kapasitas Tukar Kation (KTK). Berdasarkan hasil penelitian menunjukkan lokasi penelitian bertekstur klei yang masuk kedalam kategori sedang. Bobot isi berkisar pada 0.8 – 1.4g/cm3 . Pori air tersedia berkisar pada 7.37 – 41.47%. Permeabilitas berada pada rentang 0 – 39.88cm/jam. Kadar C-organik dan Nitrogen relatif rendah. P-tersedia, K-dd, KTK relatif tinggi. Berdasarkan analisis PCA didapatkan tiga parameter sebagai MDS yaitu tekstur, Pori Air Tersedia (PAT), dan permeabilitas. Nilai IKT berkisar 2.60 – 3.43 yang masuk kategori agak rendah dan sedang. Indeks Kualitas Tanah yang dominan pada daerah penelitian adalah sedang. Hasil analisis menunjukkan lokasi penelitian sesuai untuk pengembangan tanaman palawija dan IKT yang rendah dapat ditingkatkan dengan pemberian bahan organik., Post-harvest paddy soil has changed properties and is different from the conditions when the paddy soil is irrigated, although it is a continuation of the previous properties. Different properties need to be evaluated to determine their quality and fertility rate. The study aimed to evaluate the characteristics of physical and chemical properties of post-harvest paddy soil in Tuban, East Java and determine soil quality and its potential for planting crops. The research used Principal Component Analysis (PCA) and Minimum Data Set (MDS) method to select parameters for soil quality analysis. The parameters analyzed were texture, bulk density, available water pores, permeability, C-organic, total nitrogen, available phosphor (P2O5), exchangeable Potassium, and Cation Exchange Capacity (CEC). Based on the result showed that the location of the study has a clay texture which included in the moderate category. Bulk density ranges from 0.8 – 1.4g/cm3 . Available water pores ranges from 7.37 – 41.47%. Permeability ranges from 0 – 39.88cm/h. C-organic and total nitrogen level are relatively low. Available phosphor, exchangeable potassium, and CEC are relatively high. Based on the PCA analysis, there are three parameters obtained as the MDS that are texture, available water pores, and permeability. The Soil Quality Index values range from 2.60 – 3.43, which included in the slightly low and medium categories. The dominant soil quality index in the study area is medium categories. The results of the analysis showed that the location of the study is suitable for the development of secondary crops and SQI low category can be improved by the provision of organic matter.
Keyword: oil Quality Index, Minimum Data Set (MDS), Principal Component Analysis (PCA)

Judul: Infeksi Cacing Jantung Dirofilaria Immitis, Railliet & Henry, 1911 Pada Anjing
Abstrak: Cacing Dirofilaria immitis dewasa yang tinggal dalm ventrikel kanan jantung anjing, sering kali menimbulkan gejala klinis yang cukup berat. Cacing Tersebut menghasilkan mikrofilaria yang selanjutnya berkembang menjadi larva infektif dalam saluran malphigi induk semang entara, yaitu nyamuk dari genus Culex, Aedes dan Anopheles.
Keyword: