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: Efektivitas Pupuk Organik terhadap Pertumbuhan, Produksi, dan Kadar Hara NPK Daun Jagung Manis di Latosol Darmaga
Abstrak: Sweet corn is seed plant which is commonly planted in Indonesia because of it's sweet taste and contain high carbohydrate. One of the problems in cultivation of sweet corn is low soil fertility, due to the lack of soil nutrient availability and organic matter. To solve that problem can be done by applying organic and anorganic fertilizers. Organic fertilizer is able to increase chemical fertilizer efficiency through improving of physical, chemical and biological of soil. So it is expected to increase the production of plant significantly. The objective of this research is to study the effectiveness of organic fertilizers that was combined with inorganic fertilizer on the growth, production, and N, P, K content of sweet corn leaf in Latosol Darmaga. The field experiment was conducted at the University Farm IPB and plant analisis in the laboratory of soil chemistry and fertility, Department of soil science and Land Resources Faculty of Agriculture IPB. The materials used were organic fertilizers, inorganic fertilizers, seeds of sweet corn (Seleksi Darmaga III), furadan, and agricultural lime. The design of the experiment was a randomized complete block design (RCBD) with a single treatment consisted of 7 treatments which was repeated 3 times each, so there were 21 experimental units. Those seven treatments were: (1) control, (2) Standard (S), (3) 0.5 S + 1.5 PO, (4) 0.5 S + 1 PO, (5) 0.75 S + 1 PO, (6) 1 S + 1 PO and (7) 0.75 S + 1.5 PO. The parameters measured were plant height, production (corn cobs weight including the cornhusk and stover weight), and N-, P-, K-content of corn leaf. The results of this research showed that additional of organic fertilizer with inorganic fertilizer was effective in improving the growth, production, and N, P, K content of sweet corn leaf. The production for treatment 1 S + 1 PO was 14.31 t/ha greater (2.37 t/ha) than standard treatment, and 11.81 t/ha greater than control treatment (no fertilizer application).
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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