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dc.contributor.advisorSabrina, T
dc.contributor.advisorLubis, Kemala Sari
dc.contributor.authorPakpahan, Nur Hardiyanto
dc.date.accessioned2020-01-23T06:40:42Z
dc.date.available2020-01-23T06:40:42Z
dc.date.issued2020
dc.identifier.urihttp://repositori.usu.ac.id/handle/123456789/23027
dc.description64 Halamanen_US
dc.description.abstractHealthy of soil is problem which can caused decreasing carrying capacity of land. In some oil palm plantations the Ganoderma attacks are more than the threshold.This study aims to determine the potential of chitosan fungus from the Syncephalastrum racemosum and chopped palm oil stem in suppressing the growth of ganoderma population in the field. The study was conducted at PT. Langkat Nusantara Kepong Tanjung Beringin Sub- District Hinai, Langkat Regency and the Soil Biology Laboratory Faculty of Agriculture, University of North Sumatra in July to October 2019. The study used a Randomized Block Design with 3 replications and 2 factors. Factor I: the various application time of chitosan, control, in the beginning of planting, every 2 weeks, and every 4 weeks. Factor II: The application of chopped palm oil stem and without chopped palm oil stem. The dose of chitosan is 100 ml with 250 ppm concentration. The chitosan has a significant effect on the stem diameter of oil palm plants aged 15 months, soil acidity, soil moisture and soil temperature. The application of chopped palm oil stem significantly affects the diameter of the palm oil stem, soil temperature, and soil moisture.en_US
dc.description.abstractKesehatan tanah yang bermasalah dapat mengakibatkan penurunan daya dukung lahan. Pada beberapa perkebunan kelapa sawit serangan ganoderma sudah melewati ambang batas. Penelitian ini bertujuan untuk mengetahui potensi kitosan asal jamur Syncephalastrum racemosum dan cacahan batang kelapa sawit (chipping) dalam menekan pertumbuhan populasi ganoderma di lapangan. Penelitian dilaksanakan di PT. Langkat Nusantara Kepong Tanjung Beringin Kecamatan Hinai Kabupaten Langkat dan Laboratorium Biologi Tanah Fakultas Pertanian Universitas Sumatera Utara pada bulan Juli sampai dengan Oktober 2019. Penelitian menggunakan Rancangan Acak Kelompok dengan 3 ulangan dan 2 Faktor. Faktor I: Waktu aplikasi kitosan kontrol, awal tanam, setiap 2 minggu, dan setiap 4 minggu. Faktor ke II: Aplikasi chppping dan tanpa chipping. Dosis pemberian kitosan sebanyak 100 ml dengan konsentrasi 250 ppm. Dari penelitian yang telah dilakukan kitosan berpengaruh nyata pada diameter batang tanaman kelapa sawi tumur 15 bulan, kemasaman tanah, kelembaban tanah dan suhu tanah. Aplikasi chipping batang kelapa sawit berpengaruh nyata pada diameter batang kelapa sawit, suhu tanah, dan kelembaban tanah.en_US
dc.language.isoiden_US
dc.publisherUniversitas Sumatera Utaraen_US
dc.subjectSyncephalastrum racemosumen_US
dc.subjectGanodermaen_US
dc.subjectKitosanen_US
dc.subjectKelapa Sawiten_US
dc.titlePengaruh Waktu Aplikasi Kitosan dan Cacahan Batang Kelapa Sawit (Chipping) Terhadap Pertumbuhan Kelapa Sawit dan Jumlah Populasi Mikroba Tanahen_US
dc.typeSkripsi Sarjanaen_US
dc.identifier.nimnipnik150301095


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