Judul: Respons progeni kentang (solanum tuberosum L.) yang diperbanyak dengan benih botani terhadap pemberian pupuk kandang sapi
Abstrak: Penggunaan benih botani dalam perbanyakan lmH-unan lrnnl.ang merupakHn salah sat.u alternat.if unL11k nHndapatkan benih umbi hP-· bas virus dan unl.uk produksi kentang konsurnsi. Selain Hu, jikn benih umbi digurrnkan spbagai bahan perbanyakan, dibutuhkan 1,5 - 2,0 t 111nhi ha-1, sedangkan jika benih botani yang digunakan hanya dibut.nhlrnn 100 g saja, Dalam bndidaya kentang, penggunaan bahan organik seperl:i pupuk lrnndang tel.ap rnerupakan salah satu kebutuhan pokok. l3e·­berapa hnsil penelitian menunjuk.l{an bahwa penambahn.n pupuk knn­dang sampai 30 t ha-1 dapat meningkaLkan hasil urnbi ken!Ju1g yang diperbanyak dengan benih urnbi. Tetapi bel11rn l,;rnynk dilnporlrnn tentang hasil umbi dari perbanyakan dengan benih hoLani Olr,h ka­rena itu, dengan dikembangkannya heberapa progeni baet1 mal,a. per­lu ditelit.i responsnya masing-masing terhadnp pupuk kandang. Penelitian ini berh1j1tan unt.uk (1) rnc,n,pelnjari nospons b,,berapa progeni kentang yang diperbanyak dengan benih bot.ani te1·hadap pernberian pupuk kandang dan (2) mendapatkan talrnnrn pupuk lrnn­dang yang sesuai bagi setiap progeni kentang yang dicoha
Keyword: Solanum tuberosum

Judul: Studi Peningkatan Produksi Umbi Mini Kentang (Solanum Tuberosum L.) Kultivar Granola Melalui Pemberian Pupuk Cair Kotoran Ayam Dan B-Nine
Abstrak: Kentang (Solamm fzrberoxrm L.) merupakan salah satu tanaman pangan yang permintaannya kian meningkat. Berdasarkan volume, kentang adalah tanaman pangan keempat dunia setelah gandum, jagung dan padi. Dalam mencukupi kebutuhan pangan dunia peranannya juga semakin besar.
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Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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