Judul: Pengaruh dosis bahan organik dan pupuk N, P, K terhadap serapan hara dan produksi tanaman jagung dan ubi jalar di inceptisol Ternate
Abstrak: The objective of the research was to study the effects of organic matter and N, P, K fertilizer on nutrient uptake and yield of corn and sweet potato in Inceptisol Ternate. The design of the research was factorial completely randomized block design with two factors. The first factor was the rate of organic matter (0, 20, 40 t/ha) or (B0, B1 and B2) and the second factor was the rate of N, P, K fertilizer (0,5 ; 1 and 1,5 recommended dosages) or (F1, F2 and F3). The results of research showed that combination of B1F2 was significantly increased and gave the highest amount of the corn leaf at 42 DAP and spiraling upward of potatoes at 42 DAP (in sweet potato planting), the weight of corn with husk cover, the weight corn grains, and K-availability of soil in corn planting. Whereas the rate of 20 t/ha organic matter (B1) was significantly increased and gave the highest weight of corn without husk cover, NPK corn plant content and P uptake in corn planting, and weight of sweet potatoes, P plant content and soil K availability in sweet potatoes planting. However, the dosage of F2 fertilizer was significantly increased and gave the highest to NK plant content of sweet potatoes and P-availability of soil in sweet potatoes planting. The average NPK plant uptake of corn was 31,41-39,39 kg N/ha, 6,03- 12,54 kg P/ha, 37,5-41,70 kg K/ha, and NPK plant uptake of sweet patatoes were 20,38-28,68 kg N/ha, 7,45-12,90 kg P/ha dan 27,84-36,08 kg K/ha. The average production of corn was 5,16-7,83 t/ha and sweet potatoes was 8,90-15,35 t/ha.
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Judul: The Effect of Combination B and NPK Fertilizer on the Growth of Swet Corn and Some Nutrients in Darmaga Inceptisols
Abstrak: Tanah-tanah di daerah tropik memiliki kadar B total dan tersedia yang rendah. Intensifikasi produksi dalam jangka panjang berpotensi menyebabkan defisiensi B dan penurunan produktifitas jagung manis. Penelitian ini bertujuan untuk mengetahui kadar B tersedia tanah dan kadar B daun, N-total, P-total dan tersedia serta K-dd dalam tanah. Rancangan percobaan menggunakan Rancangan Fraksional Acak Kelompok non faktorial dengan delapan perlakuan yang terdiri dari kontrol (B0S0), standar (B0S1), B1S1, B2S1, B3S1, B1S2, B2S2, dan B3S2 dengan empat ulangan sehingga terdapat 32 satuan percobaan. Pupuk kandang dan kapur sebagai pupuk dasar diberikan ke seluruh petak satu minggu sebelum tanam. Hasil penelitian menunjukkan bahwa kombinasi pupuk B dan NPK tidak signifikan dalam meningkatkan kandungan P-total dan tersedia, K-dd dalam tanah, kadar B daun, dan pertumbuhan jagung manis. Namun signifikan meningkatkan kadar B tersedia tanah, N-total, dan mempercepat menculnya bunga jantan (tasseling). Perlakuan B1S1 dengan dosis pupuk B = 9 kg/ha dan NPK = 300 kg/ha optimal dalam menunjang pertumbuhan dan mempercepat fase pembungaan jagung manis., Soils in tropical climates have low total and available B content. Intencification of production on the long term, potentially cause B deficiency and decreasing the productivity of sweet corn. This study aims to determine the content of available B in soil and B in leafes, total-N, total and available P, and exchangeable Potassium in the soil. The experimental design used non-factorial Randomized Fractional Design with eight treatments consisting of control (B0S0), standard (B0S1), B1S1, B1S1, B2S1, B3S1, B1S2, B2S2, and B3S2 with four replications so there were 32 experimental units. Manure and lime as basic fertilizers were applied to all plots one week before planting. The results showed that the combination of B and NPK fertilizers were not significant in increasing the total and available P content, exchangeable Potassium in the soil, content of B in leafes, and the growth of sweet corn. However, it’s significant in increasing the available B content in the soil, total-N, and accelerate the appearance of male flowers (tassel). B1S1 treatment with a dose of fertilizer B = 9 kg/ha and NPK= 300g/ha is optimal in supporting growth and accelerating the flowering phase of sweet corn.
Keyword: Availability, boron, deficiency, soil parameters, sweet corn

Judul: Karakteristik Anatomi Skelet Kepala Buaya senyulong (Tomistoma schlegelii).
Abstrak: Buaya sepit atau senyulong (Tomistoma schlegelii) merupakan jenis buaya asli Indonesia yang berhabitat di sungai-sungai Sumatera, Kalimantan, dan juga pedalaman Sulawesi. Salah satu ciri khas buaya senyulong adalah bentuk moncong yang runcing dan sempit, namun hingga saat ini informasi mengenai struktur skelet kepala buaya senyulong sangat terbatas. Penelitian ini bertujuan untuk mempelajari karakteristik anatomi skelet kepala buaya senyulong yang dikatikan dengan fungsi dan perilakunya. Penelitian dilakukan secara eksploratif dengan melakukan pengamatan, pencatatan, dan pengambilan gambar dari skelet kepala buaya senyulong. Skelet kepala berukuran panjang 70 cm, lebar 29 cm, dan tingggi 17 cm dengan permukaan kasar pada os nasale, os frontale, os maxilla, os mandibula, os lacrimale, os jugale. Jumlah gigi pada buaya ini sebanyak 78 buah, terdiri dari 4 buah gigi premaxila, 16 buah gigi maxila, dan 19 buah gigi mandibula. Pada regio orbitalis ditemukan dua pasang fenestrae temporales yang berkembang baik. Fenestra supratemporale merupakan lubang oval yang membentang di sepanjang os parietale. Fenestra infratemporale berbentuk segitiga dan dibatasi oleh os squamosum, os postorbitale, os jugulare, dan os quadratum. Os mandibula hewan ini mempunyai symphysis mandibularis yang panjang yaitu garis yang melintang di corpus mandibulae. Secara fungsional ukuran symphysis mandibularis berkaitan dengan adaptasi hewan terhadap diet makan.
Keyword: kepala, moncong, Tomistoma schlegelii