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PENGARUH PUPUK ORGANIK CAIR URIN SAPI DAN LIMBAH TAHU TERHADAP PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.)
Oleh: Desiana, Christina, Banuwa, Irwan Sukri, Evizal, Rusdi
Tanaman kakao (Theobroma cacao L.) merupakan salah satu komoditas yang terus dikembangkan di Indonesia, namun produksinya masih rendah disebabkan pengolahan tanah dan pemupukan yang kurang baik. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemberian campuran urin sapi dan limbah cair ...
Penerbit: Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung • Publikasi: 31 January 2013
THE COMPARISON OF LEARNING MODEL BETWEEN TWO STAY TWO STRAY AND GALLERY WALK CONCERNING ON STUDENTS’ CRITICAL THINKING ABILITY IN EXCRETION SYSTEM SUBJECT
Oleh: Erikania, Yeni, Achmad, Arwin, Marpaung, Rini Rita T
The objective of this research was to find out the students’ critical thinking ability through TSTS and GW model in excretion system subject and students activity in teaching leaning process.The design of this research was pretest-posttest non equivalent. The research sample was students of XI IPA...
Penerbit: Universitas Lampung • Publikasi: 29 January 2013
Root-induced Changes in the Rhizosphere of Extreme High Yield Tropical Rice: 2. Soil Solution Chemical Properties
Oleh: Purnomo, Erry, Choiron, Dodik, Yulia, Raina
Our previous studies showed that the extreme high yield tropical rice (Padi Panjang) produced 3-8 t ha-1 without fertilizers. We also found that the rice yield did not correlate with some soil properties. We thought that it may be due to ability of root in affecting soil properties in the root zone....
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013
The Influnece of Peat Layer on Hidrogen and Aluminium Concentration Originating from the Substratum Sulphidic Materials
Oleh: Fahmi, Arifin Fahmi, Radjagukguk, Bostang, Purwanto, Benito Heru
Much of peatland in Indonesia has sulphidic materials as substratum. Soil acidity and metal elements in peatlandmay originate from the sulphidic materials which occur underneath of the peat layer. Peat soil buffering capacity andchelating ability of the peat materials regulate the soil acidity and m...
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013
The Changes of P-fractions and Solubility of Phosphate Rock in Ultisol Treated by Organic Matter and Phosphate Rock
Oleh: Djuniwati, Sri, Nugroho, Budi, Pulunggono, Heru Bagus
Phosphorus (P) is one of the essential elements for plant, however, its availability is mostly very low in acid soils. It is well documented that application of phosphate rock and organic matter are able to change the level of availability of P-form in acid soils. The objective of the research w...
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013
Ferro Content in Soil and Mustard Leave (Brassica Junjea) Treated by Agricultural Waste on the Biosensitizer-Iron Photoreduction
Oleh: Rorong, Johnly Alfreds, Sudiarso, ., Prasetya, Budi
Atom absorption spectrophotometer (AAS) had been used to analyzed Ferro in the soil and in the green mustardleaf (Brassica junjea) treated with phenolics extract from the agricultural wastes of clove leaf (Eugenia aromatica),rice straw (Oryza sativa) and water hyacinth leaf (Eichhornia crassipessolm...
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013
Citrate Root Exudation under Zn and P Deficiency
Oleh: Siane, Bless Aplena Elen
Zinc and phosphorus are essential nutrients with low bioavailability in calcareous soils. Some plants exude organicacids to increase the solubility of these two nutrients. The objective of this study was to examine citrate exudation rates of different lupin (Feodora and Energy) and rapeseed (Dunkeld...
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013
Plot Scale Phosphorous and Potassium Balances of Newly Opened Wetland Rice Farming Originated from Wetland
Oleh: Sukristiyonubowo, ., Nugroho, Kusumo, Ritung, Sofyan
Development of newly opened wetland rice fields both from dry land and wetland in Indonesia are important to meetrice growing demand, increase soil productivity, keep rural food security and provide jobs as well as generateincome. Most soils of newly opened rice fields are low in P and K contents, b...
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013
Response of Some Rice Cultivars in New Opening Paddy Fields with High Fe2+ Using Multi-packet Technology
Oleh: Utama, M Zulman Harja, Wahidi, Ismed, Sunadi, .
The main obstacle to increase rice yield in new opening paddy fields, is that high levels of dissolved ferrous ions(Fe2+) which toxic to plants. This research aimed to study the growth and yield of several rice cultivars tolerant toFe2+ in the new opening paddy fields with multi-packet technology. T...
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013
Improving Phosphate Efficiency by Phosphate Solubilizing Bacteria and Organic Matter Estimated by Radio Isotop (32P) Technique in Some Soils
Oleh: Mudjiharjati, Arie, Setiawati, Tri Candra, Pandutama, Martinus Harsanto
Phosphorous (P) contents in many soils are varies highly along with their ability to provide available P to plant growth. Soils may contain very high in total P, but low in available P due to high P adsorbed by soil matrix and all their adsorbing agents. This research which using natural materials w...
Penerbit: UNIVERSITY OF LAMPUNG • Publikasi: 25 January 2013