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Tengku Sabrina
Program Studi Agroekoteknologi Fakultas Pertanian, USU, Medan
Agriculture, Biological Sciences & Forestry

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PERTUMBUHAN DAN PRODUKSI JAGUNG (Zea mays. L) PADA BERBAGAI PENGELOLAAN GULMA DI KABUPATEN DELI SERDANG Fitria; Edison Purba; Tengku Sabrina
Jurnal Pertanian Tropik Vol. 4 No. 3 (2017): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.448 KB) | DOI: 10.32734/jpt.v4i3.3090

Abstract

Kehadiran gulma pada budidaya jagung dapat menurunkan produksi jagung. Cara pengelolan gulma yang tepat diperlukan untuk menenkan pertumbuhan gulma dan diharapkan dapat meningkatkan pertumbuhan dan produksi jagung pada lahan budidaya. Penelitian ini bertujuan untuk mengetahui pengaruh herbisida terhadap cara pengelolaan gulma di kabupaten Deli Serdang. Penelitian dilaksanakan di kebun Balai Benih Induk Tanaman Palawija, Tanjung Selamat Kecamatan Sunggal Sumatera Utara pada bulan Juli-September 2013, menggunakan Rancangan Acak Kelompok (RAK) non faktorial dengan 10 perlakuan dengan 3 ulangan pengelolaan gulma. Parameter yang diamati adalah tinggi tanaman, berat 100 biji dan berat pipil per plot. Hasil penelitian menunjukkan bahwa cara pengelolaan gulma berpengaruh tidak nyata pada tinggi tanaman umur 3,6 dan 9 MST dan Bobot 100 biji namun berpengaruh nyata terhadap aplikasi herbisida dengan menggunakan calaris produksi tongkol per plot sebesar 11.47 kg dibandingkan dengan gulma tidak dikendalikan 3.04 kg, dan Produksi Pipil Per Plot.
Deskripsi Makrofauna pada Tanah Andisol di Kabupaten Karo dengan Berbagai Ketebalan Abu Vulkanik Gunung Sinabung Armando Septian Simbolon; Mariani sembiring; Tengku Sabrina
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.487 KB) | DOI: 10.32734/jpt.v5i1.3130

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Changed soil conditions will result in the changed population and diversity in the soil. The eruption of Sinabung Mount caused the surface of the soil covered with volcanic ash with various thicknesses. This research was to study a description of macrofaunal communities at different thicknesses of Sinabung volcanic ash on andisol soil in Karo Regency. The experiment was conducted in May 2017. The experiment plot was located at four locations, location I was not covered by ash (0 cm), location II was covered with thin ash (≤2 cm), location III was covered with medium ash (2-8 cm), location IV was covered with thick ash (≥8 cm) using the transect sampling method. Samples was collected by using the Pitfall Trap, Monolith quadrant, and the Hand Sorting method. Macrofaunal communities found 3 phyla, 6 classes, 11 orders, 17 families, and 18 species at location I. Macrofaunal communities found 3 phyla, 7 classes, 11 orders, 16 families, and 17 species at location II. Macrofaunal communities found 2 phyla, 3 classes, 7 orders, 9 families, and 9 species at location III. Macrofaunal communities found 1 phylum, 2 classes, 5 orders, 7 families, and 7 species at location IV.
Pertumbuhan dan Uji Gula Reduksi 5 Isolat Jamur Asal Batang Kelapa Sawit ke Potongan Batang Kelapa Sawit Poltak Mangatur Tua Sirait; Tengku Sabrina; Asmarlaili Sahar Hanafiah
Jurnal Pertanian Tropik Vol. 5 No. 1 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (611.288 KB) | DOI: 10.32734/jpt.v5i1.3138

Abstract

Fungi is a microorganism that has been widely used to accelerate the rate of decomposition of organic matter. This research was conducted in the soil biology laboratory of the Faculty of Agriculture, University of Sumatera Utara. This study was aimed to examine the potential of fungi isolates derived from palm oil trunks. This research begins by isolating the fungi contained in the cutting of oil palm trunk from the plant rejuvenation. The isolate is purified to obtain a pure culture. Selected isolates were identified by DNA sequencing using PCS 28s ITS and the results were identified as Rhizopus arrhizus Strain ATCC 111450 (A), Rhizopus microspores var rhozopodiformis Strain IFM 46417 (B) Syncephalastrum racemosum isolate VPCI 1857/11) (C), Trichoderma asperellum Strain ATCC 52438 (D), and Trichoderma asperellum Strain G (E). All isolates were applied to sterilized palm oil trunks. The results of this study were Rhizopus microspores var rhozopodiformis Strain IFM 46417 capable of growing well in pH 4, 6, and 8, Trichoderma asperellum Strain G (E) had the fastest growth rate of 64.58 mm / day. Test of cellulase enzyme production by using a method of Fehling A and B aiming at the fungus Trichoderma asperellum Strain G (E) produces the highest cellulase enzyme.
Co-Authors Armando Septian Simbolon Asmarlaili Sahar Hanafiah Edison Purba Fitria Mariani sembiring Poltak Mangatur Tua Sirait