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

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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 | Full PDF (708.781 KB) | 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).
POPULASI DAN TINGKAT SERANGAN HAMA KUTU PUTIH PADA UBI KAYU (MANIHOT ESCULENTA CRANTZ) PADA BEBERAPA LOKASI PENANAMAN DI LAMPUNG Sidarlin, Sidarlin; Swibawa, I Gede; Hariri, Agus Muhammad; Susilo, FX
Jurnal Agrotek Tropika Vol 8, No 2 (2020): JURNAL AGROTEK TROPIKA VOL 8, MEI 2020
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (712.029 KB) | DOI: 10.23960/jat.v8i2.3912

Abstract

The research aimed at studying the level of attack and population of mealybug cassava in multiple cassava planting locations in Lampung Province takes place from September 2017 to January 2018. Sampling was carried out in several cassava planting locations in five villages in five sub-districts in South Lampung, Central Lampung, and East Lampung. Attack crop samples were ten plants that were systematically chosen, each at five sample points located on four diagonal lines and one at the midpoint of each field. One plant at each sample point was selected for observation of the mealybug population. The laboratory process is carried out at the Plant Pests Laboratory, Plant Protection Department, Faculty of Agriculture, University of Lampung. The results showed that mealybug  were found in all locations of observation with a low population density of 0.68-3.26 individuals. per 3 leaves. Location of cassava planting does not affect the population of mealybug  but this location affects crop damage which ranges from 47 - 59%. Damage to plants in South Lampung is lower than damage to plants in East Lampung and Tanjung Bintang.
PERTUMBUHAN DAN PATOGENISITAS BEBERAPA ISOLAT MUTAN METARHIZIUM ANISOPLIAE TERHADAP HAMA PENGHISAP POLONG (RIPTORTUS LINEARIS) Astuti, Puji; Fitriana, Yuyun; Wibowo, Lestari; Susilo, FX
Jurnal Agrotek Tropika Vol 8, No 2 (2020): JURNAL AGROTEK TROPIKA VOL 8, MEI 2020
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (600.349 KB) | DOI: 10.23960/jat.v8i2.3908

Abstract

Growth and pathogenicity of Metarhizium anisopliae mutant isolates on pod sucking bug (Riptortus linearis). This study aimed to determine the growth ability of Metarhizium anisopliae mutant (colony diameter, spore density, and viability) and the ability of M. anisopliae to cause mortality in pod sucking bug(Riptortus linearis). The study conducted at the Laboratory of Agricultural Biotechnology, Faculty of Agriculture, University of Lampung. The study began in December 2016 - April 2017. M. anisopliae used in this study were isolate B wildtype (MYFT B), mutant M. anisopliae 1 (MYFT 1), mutant M. anisopliae 42 (MYFT 42), and M. mutant anisopliae 51 (MYFT 51). The results of this study indicated that the Myft B isolate (wildtype) had the widest diameter (5.50 cm) with the highest spore density in the MYFT 42 mutant isolate (7.4000 x 108 spores / ml) and the highest viability in theMYFT 51 mutant isolate (96.750% ). MYFT 51 and MYFT 42 mutant isolates were able to cause 100 % mortality of R. linearis and significantly higher compared to the MYFT 1 mutant isolates and wildtype MYFT B.