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Identification of the Distribution of Asian Redtail Catfish (Hemibagrus nemurus) Based on Geographical Information Systems (GIS) in the Progo River, Magelang, Central Java Tholibah Mujtahidah; Usman Siswanto; Sri Hidayati; Abdul Qadir Jailani
Journal of Aquaculture Science Vol 6 No 1 (2021): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v6i1.125

Identification of the distribution of asian redtail catfish (Hemibagrus nemurus) based on Geographical Information System (GIS) in the Progo Magelang river is a database collection process to determine the distribution patterns of H. nemurus and determine H. nemurus resources with the help of GIS and outlined in the form of a fish resource zoning map so that it can help in domestication efforts that lead to the cultivation of endemic aquatic commodities. The purpose of this study was to identify the distribution of H. nemurus, determine the status of H. nemurus resources based on diversity data to see the existing potential and to describe it in the form of a fish resource zoning map in the progo river. The research method used was a survey method with a GIS approach and the data presented in the form of descriptive analysis included fish identification and a GIS approach. GIS data processing used is in the form of hardware, namely: Personal Computer (PC), color printer and scanner, while the software in the form of software ArcGIS 9.x, Ms. Excel and Ms. Word. The method used in this study is the GIS approach with spatial analysis techniques, namely the techniques used in analyzing spatial / spatial studies. Based on the results of the study, it was shown that H. nemurus in the Progo river were found in areas with sandy clay substrates at a depth of 2 m, namely in the Ngeluwar area. The distribution of H. nemurus in the Progo river tends to be evenly distributed, because the conditions of the Progo river habitat support the life of H. nemurus.Keywords: Hemibagrus nemurus, Geographical Information System, Progo River.

EFEKTIVITAS DEKOMPOSER DAN KONSENTRASI PUPUK ORGANIK CAIR LIMBAH KUBIS PADA TANAMAN SELADA (Lactuca sativa L.) Raden Arya Laksamana Yudha; Usman Siswanto; Putri Laeshita
JURNAL VIGOR Vol 7, No 1 (2022): VIGOR: JURNAL ILMU PERTANIAN TROPIKA DAN SUBTROPIKA
Publisher : Universitas Tidar

This research was conducted to determine the effectiveness of the type of decomposer and liquid organic fertilizer concentration of cabbage waste material on the growth and yield of lettuce This experiment was arranged in bifactorial randomized block design arranged with three replications. The first factor was the type of cabbage waste material of liquid organic fertilizer decomposer consisting of control, Thiobacillus sp., indigenous microorganisms (IMO), and Effective Microorganisme-4. The second factor was the difference in liquid organic fertilizer concentrations of cabbage waste material consisting of 10 mL/L, 20 mL/L, and 30 mL/L. The observed variables included the number of leaves, leaf length, leaf fresh weight, leaf dry weight, root fresh weight, root dry weight, and root length. No significant difference was found with the application of liquid organic fertilizer with a type of decomposer and concentration of cabbage waste material on the whole observed variables. The application liquid organic fertilizer concentration of cabbage waste material waste did not respond to the growth and yield of lettuce plants on the parameters of the number of leaves, leaf length, leaf fresh weight, leaf dry weight, root fresh weight, root dry weight and root length. There was no interaction between the type decomposer and the liquid organic fertilizer of cabbage waste material on the growth and yield of lettuce. Based on the results of the research that has been carried out, it can be suggested that further research is needed on the length of the fermentation process in liquid organic fertilizer of cabbage waste material.

UJI EFEKTIVITAS KONSENTRASI EKSTRAK DAUN SIRIH DAN DAUN MENGKUDU TERHADAP PENYAKIT ANTRAKNOSA PADA KOMODITAS CABAI RAWIT SECARA IN VITRO Ririn Vian Herviana; Usman Siswanto; Putri Laeshita
Jurnal Agrivet Vol 28, No 2 (2022): AGRIVET
Publisher : UNIVERSITAS PEMBANGUNAN NASIONAL ”VETERAN” YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/agrivet.v28i2.8253

Antraknosa merupakan penyakit penting pada cabai dan apabila dibiarkan dapat mengurangi hasil panen. Daun sirih dan mengkudu kaya akan bahan aktif yang bersifat antifungal sehingga dapat digunakan untuk menekan penyakit tersebut. Tujuan Penelitian ini yakni menguji manfaat ekstrak daun sirih dan daun mengkudu pada beberapa konsentrasi dalam menghambat pertumbuhan jamur Colletotrichum sp. Penelitian dilaksanakan di laboratorium dengan menggunakan percobaan faktorial (2x5) yang disusun dalam Rancangan Acak Lengkap (RAL). Penelitian dilakukan secara in vitro dengan metode peracunan media tumbuh PDA (Potato Dextrose Agar) dengan bahan ekstrak sesuai dengan konsentrasi yang telah ditentukan yaitu 0, 3, 6, 9 dan 12 %, selanjutnya jamur Colletotrichum sp. diinokulasi pada media tumbuh. Data dianalisis menggunakan sidik ragam dan diuji lanjut Orthogonal Polynomial dan Least Significant Difference (LSD). Hasil penelitian menunjukkan bahwa semakin tinggi konsentrasi ekstrak semakin efektif kandungan senyawa aktif dalam ekstrak daun sirih dan daun mengkudu. Interaksi antara keduanya mampu menurunkan diameter koloni, kerapatan spora dan meningkatkan daya hambat. Berdasarkan penelitian dapat disimpulkan bahwa kandungan senyawa aktif dari ekstrak daun sirih dan daun mengkudu mampu menekan pertumbuhan jamur Colletotrichum sp. hingga 12%.

Identification of the Distribution of Asian Redtail Catfish (Hemibagrus nemurus) Based on Geographical Information Systems (GIS) in the Progo River, Magelang, Central Java Tholibah Mujtahidah; Usman Siswanto; Sri Hidayati; Abdul Qadir Jailani
Journal of Aquaculture Science Vol 6 No 1 (2021): Journal of Aquaculture Science
Publisher : Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31093/joas.v6i1.125

Identification of the distribution of asian redtail catfish (Hemibagrus nemurus) based on Geographical Information System (GIS) in the Progo Magelang river is a database collection process to determine the distribution patterns of H. nemurus and determine H. nemurus resources with the help of GIS and outlined in the form of a fish resource zoning map so that it can help in domestication efforts that lead to the cultivation of endemic aquatic commodities. The purpose of this study was to identify the distribution of H. nemurus, determine the status of H. nemurus resources based on diversity data to see the existing potential and to describe it in the form of a fish resource zoning map in the progo river. The research method used was a survey method with a GIS approach and the data presented in the form of descriptive analysis included fish identification and a GIS approach. GIS data processing used is in the form of hardware, namely: Personal Computer (PC), color printer and scanner, while the software in the form of software ArcGIS 9.x, Ms. Excel and Ms. Word. The method used in this study is the GIS approach with spatial analysis techniques, namely the techniques used in analyzing spatial / spatial studies. Based on the results of the study, it was shown that H. nemurus in the Progo river were found in areas with sandy clay substrates at a depth of 2 m, namely in the Ngeluwar area. The distribution of H. nemurus in the Progo river tends to be evenly distributed, because the conditions of the Progo river habitat support the life of H. nemurus.Keywords: Hemibagrus nemurus, Geographical Information System, Progo River.

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