Judul: Pengaruh Kepadatan Tanah Terhadap Pertumbuhan dan Produksi Kacang Tanah (Arachis hypogaea L.)
Abstrak: The population growth increase the consumption of the food. These conditions require the agricultural sector to increase production. To increase agricultural production can be done by agricultural intensification that applies maximum tillage systems. But without realizing, the long-term intensive tillage can cause soil compaction. The purpose of this research is to find out and see the effect of soil compaction, expressed by the differences in soil bulk density, to support the growth, yield production, and penetrating of gynofora on peanut. This research used soil material from Jasinga district (Podsolik Jasinga), conducted at Soil Physical and Conservation Laboratory, Soil Chemistry Laboratory, Departemen of Soil Science and Land Resources, Faculty of Agriculture IPB, and Greenhouse of University Farm IPB. Completed random design is used as experimental design and Duncan’s Multiple Range Test (DMRT) is used to identify the effect of treatment. The bulk density results of the research showed that the increasing of soil density (soil compaction) has significantly affect on hydraulic conductivity and soil resistance value before planting or after planting peanuts, but didn’t significantly affect on water holding capacity at field capacity used Alhricks. For peanut, soil compaction significantly affect to plant height, stem diameter, number of leaves, number of flowers, wet canopy biomass and root length. The soil compaction didn’t significantly affect on canopy biomass dry, wet and dry root biomass. The soil compaction gives a significantly affect on crop yield production (peanut and seed). Effect of soil compaction was also visible at gynofora penetration and growth.
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Judul: Pengaruh aplikasi pupuk organik dan pupuk anorganik terhadap pertumbuhan, produksi serta mutu benih kacang tanah (Arachis hypogaea L.)
Abstrak: The research was carried out at the Seed Science and Technology Laboratory, Soil Science Laboratory, Laboratory of Biology and Laboratory of Plant Ecology IPB Darmaga, Bogor from March to July 2006. The aim of the research was to study the effect of organic and inorganic fertilizers on growth, yield and seed quality of peanut (Arachis hypogaea L.). A single factor experiment with 9 treatments was arranged in a Randomized Block Design with 3 replications. The treatments consist of : recommended dosage of inorganic fertilizer (20 kg/ha Urea, 45 kg/ha TSP, 50 kg/ha KCI) = PI, Goat manure (5 ton/ha) = P2, combination of Goat manure (5 ton/ha) and inorganic fertilizer (20 kg/ha Urea, 45 kg/ha TSP and 50 kg/ha KCI) = P3, Rhizobium inoculant (40 g/2000 m2) = P4, combination of Rhizobium inoculant and inorganic fertilizer (10 kg/ha Urea, 22.5 kg/ha TSP and 25 kg/ha KCI) = P5, Biocompos (5 ton/ha) = P6, combination of Rhizobium inoculant (40 g/2000 m2) and Biocompos (5 ton/ha) = P7, MTM (200 g/ha) = P8, combination of MTM (200 g/ha) and inorganic fertilizer (20 kg/ha Urea, 22.5 kg/ha TSP and 25 kg/ha KCI) = P9. Results of the experiment showed that application of organic fertilizer and its combination with inorganic fertilizer could produce high seed yield similar to the recommended dosage of inorganic fertilizer, 17.30 -22.03 g /plant. However application of Rhizobium inoculant or Biocompos alone produced lower seed yield, 12.27 - 13.57 g /plant, than the recommended inorganic fertilization. MTM was the best treatment producing the highest seed yield and better performance where 4 of plant growth variables including branch number, leave width, dry and fresh weight of nodule significantly higher than those of the recommended inorganic fertilization. For seed viability and vigor as seed quality variables, there was no significant difference among the treatments.
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Judul: Gambaran darah ikan mas Cyprinus carpio yang terinfeksi koi herpes virus
Abstrak: Iak memiliki sistem pertahanan tubuh untuk melawan berbagai macam penyakit. Pertahanan tubuh ikan terbagi 2 sistem yaitu pertahanan non-spesifik yang terdiri atas kulit, sisik, lendir dan darah dan pertahanan spesifik yaitu antibodi. Darah adalah cairan tubuh, yang berfungsi mengangkut oksigen, makanan dan hormon ke seluruh jaringan agar semua sel dapat berjalan sesuai fungsinya.
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