FX Susilo, FX
Faculty of Agriculture, Universitas Lampung, Bandar Lampung, Indonesia

Published : 2 Documents
Articles

Found 2 Documents
Search

IMPACT OF TROPICAL RAIN FOREST CONVERSION ON THE DIVERSITY AND ABUNDANCE OF TERMITES IN JAMBI PROVINCE Hardiwinoto, Suryo; Rahayu, Sri P; Widyatno, Widyatno; Supriyo, Haryono; Susilo, FX
Jurnal Manusia dan Lingkungan (Journal of People and Environment) Vol 17, No 1 (2010)
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1.84 KB)

Abstract

The degradation of tropical rain forest might exert impacts on biodiversity loss and affect the function and stability of the ecosystems. The objective of this study was to clarify the impacts of tropical rain forests conversion into other land-uses on the diversity and abundance of termites in Jambi, Sumatera. Six land use types used in this study were primary forest, secondary forest, rubber plantation, oil-palm plantation, cassava cultivation and Imperata grassland. The result showed that a total of 30 termite species were found in the six land use types, with highest species richness and abundance in the forests. The species richness and the relative abundance of termites decreased significantly when the tropical rain forests were converted to rubber plantation and oil-palm plantation. The loss of species richness was much greater when the forests were changed to cassava cultivation and Imperata grassland, while their abundance greatly decreased when the forests were degraded to Imperata grassland. Termite species which had high relative abundances in primary and secondary forests were Dicuspiditermes nemorosus, Schedorhinotermes medioobscurus, Nasutitermes longinasus and Procapritermes setiger.
DAYA RACUN EKSTRAK UMBI GADUNG (Discorea hispida Dennst) TERHADAP HAMA KEONG EMAS (Pomacea sp.) DAN IKAN LELE (Clarias sp.) DI RUMAH KACA Ferinda, Melshella; Solikhin, Solikhin; Indriyati, Indriyati; Susilo, FX
Jurnal Agrotek Tropika Vol 6, No 3 (2018)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v6i3.2925

Abstract

Penelitian ini bertujuan untuk mengetahui daya racun ekstrak umbi gadung (Discorea hispida Dennst) terhadap hama keong emas (Pomacea sp.) dan ikan lele (Clarias sp.). Penelitian ini dilakukan di Rumah Kaca Balai Proteksi Tanaman Pangan dan Hortikultura, Gadingrejo, Kabupaten Pringsewu pada bulan Maret sampai Mei 2016. Penelitian disusun dalam rancangan kelompok teracak sempurna (RKTS), dalam percobaan terhadap keong emas dengan 3 ulangan. Sebagai perlakuan adalah 7 taraf ekstrak umbi gadung yaitu P0 (0 g/l), P1 (5 g/l), P2 (10 g/l), P3 (15 g/l), P4 (20 g/l), P5 (25g/l) dan P6 (30 g/l). Percobaan terhadap ikan lele dengan 4 ulangan. Percobaan perlakuan adalah 5 taraf ekstrak umbi gadung yaitu P0 (0 g/l), P1 (2,5 g/l), P2 (5 g/l), P3 (7,5 g/l) dan P4 (10 g/l).Data diolah dan disajikan dalam bentuk tabel. Data dari uji daya racun tersebut dianalisis dengananalisis probit menggunakan SPSS version 23 for windows. Rata-rata daya racun (LT-50) dan (LC-50) ditentukan dengan taraf nyata 5%. Hasil penelitian menunjukkan bahwa ekstrak umbi gadung bersifat lebih toksik terhadap ikan lele dibandingkan keong emas, hal ini ditunjukkan oleh besarnya LT-50 dan LC-50. Nilai LT-50 ekstrak umbi gadung terhadap keong emas pada konsentrasi 30 g/l (2,5 hari) dan pada konsentrasi 5 g/l (13,9 hari), sedangkan nilai LC-50nya adalah (0,024 g/l). Nilai LT-50 ekstrak umbi gadung terhadap ikan lele pada konsentrasi 10 g/l (1,9 hari) dan pada konsentrasi 2,5 g/l (4,8 hari), sedangkan nilai LC-50nya adalah (0,005 g/l).