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Analisis Perubahan Lahan Sawah Berbasis Sistem Informasi Geografis di Wilayah Perkotaan Pangkajene Kabupaten Sidenreng Rappang Reza Asra; Andi Ayu Nurnawati; Muh. Irwan; Muh. Faisal Mappiasse
JURNAL GALUNG TROPIKA Vol 9 No 3 (2020)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v9i3.683

The conversion of agricultural land at a high enough rate may threaten the food security of the population. The agricultural land most vulnerable to conversion is the rice field. The aim of this study was to determine the changes in paddy fields from 2013 to 2020, the distribution of the transformation of paddy fields to other lands, and the factors that influence the conversion of paddy fields. This research was carried out by digitizing the on-screen image method in 2013 and 2020. The classification of land use results from digitization was tested for accuracy by determining the sample points in the GIS (Geographic Information System) application and then compared to the results of the field survey. In addition, an analysis of the changes in paddy fields was carried out by overlaying land use maps in 2013 and 2020. Observations and interviews with people whose land was changing were conducted on the factors affecting the change in paddy fields. Changes in land use over a period of 7 years (2013-2020), namely rice fields, decreased by 149 ha (7.36 percent ). Meanwhile, there has been an increase in the area in other land uses. The function of the paddy fields in the urban area of Pangkajene, Sidrap Regency, has become 18.69 hectares of land built, 59.42 hectares of mixed gardens, 23.13 hectares of open/empty land and 49.11 hectares of land. The factor that affects the conversion of paddy fields in the urban area of Pangkajene is the strategic location of the land, which causes the community to convert its land into a place of trade and services. The increase in the number of people requiring large land areas has led to the construction of many residential complexes in rice fields and the high selling price of rice fields, which encourages farmers to sell their land.

Studi Pertumbuhan Rumput Mulato pada Bulan Pertama Pasca Pemberian Pupuk Kandang Berbeda Muh. Irwan; R Rasbawati; Reza Asra; Fitriana Akhsan
JURNAL GALUNG TROPIKA Vol 9 No 3 (2020)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v9i3.685

Ruminant livestock development is largely determined by the carrying capacity of feed sources because the availability of quality feed is a major factor of success. The quality of natural grass that has been relied on so far must be improved by utilizing superior grass which produces better biomass and nutrients. Mulato grass (Brachiaria hybrid cv. Mulato) is one of the superior grasses that has not been widely cultivated in South Sulawesi. This study aims to look at the growth of mulato grass fertilized with different types of manure. The research design applied was a completely randomized design (CRD) with 4 treatments of giving fertilizers and 3 consecutive repetitions consisting of no treatment, administration of goat feces, treatment of cow feces, and treatment of layer chicken feces. The variables observed were plant height, plant length, number of tillers, and number of leaves which were carried out every week after being uniform. The results showed that the use of cow feces gave the best results on all variables measured in details of the best plant height 44.2 cm, plant length 68.3 cm, 70 pieces, and 11.3 tillers.

Efektivitas Pemanfaatan Lahan Pekarangan dalam Mendukung Ketersediaan Pangan pada Era Pandemi Covid-19 di Pedesaan Reza Asra; Trisnawaty AR
JURNAL GALUNG TROPIKA Vol 10 No 3 (2021)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v10i3.856

National food security is a problem that must be tackled together, especially in the new normal era caused by the covid 19 pandemic. The yard of the house to produce food is one of the concepts of using yard land both in rural and urban areas to support national food security by empowering potential local food. The yard is not only to create beauty and coolness, but also to improve the economy of each family. The purpose of this study was to determine the characteristics of the community in the use of yard land during the Covid-19 pandemic, to determine the pattern of yard use, and to determine the effectiveness of using yard land in rural areas, especially residents of Carawali Village, Sidrap Regency, in supporting food availability. The data analysis used in this study was an experiment with a one group pre-test post-test design model. In this design, an initial measurement (pre-test) was carried out, after which certain treatment was given, then a re-measurement was carried out (post-test). Sampling in this study using snowball sampling. The results showed that the use of yard land in supporting the food availability of residents in Carawali Village, Watang Pulu District showed that the percentage of the answer scores for the program effectiveness variable described from several questionnaire questions to respondents was in the range of values of 50 - 100%, which means that it is included in the effective criteria.

Efektivitas Pemanfaatan Lahan Pekarangan dalam Mendukung Ketersediaan Pangan pada Era Pandemi Covid-19 di Pedesaan Reza Asra; Trisnawaty AR
JURNAL GALUNG TROPIKA Vol 10 No 3 (2021)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v10i3.856

National food security is a problem that must be tackled together, especially in the new normal era caused by the covid 19 pandemic. The yard of the house to produce food is one of the concepts of using yard land both in rural and urban areas to support national food security by empowering potential local food. The yard is not only to create beauty and coolness, but also to improve the economy of each family. The purpose of this study was to determine the characteristics of the community in the use of yard land during the Covid-19 pandemic, to determine the pattern of yard use, and to determine the effectiveness of using yard land in rural areas, especially residents of Carawali Village, Sidrap Regency, in supporting food availability. The data analysis used in this study was an experiment with a one group pre-test post-test design model. In this design, an initial measurement (pre-test) was carried out, after which certain treatment was given, then a re-measurement was carried out (post-test). Sampling in this study using snowball sampling. The results showed that the use of yard land in supporting the food availability of residents in Carawali Village, Watang Pulu District showed that the percentage of the answer scores for the program effectiveness variable described from several questionnaire questions to respondents was in the range of values of 50 - 100%, which means that it is included in the effective criteria.

POTENSI PEMANFAATAN GOSSE SEBAGAI PAKAN TERNAK ITIK DI DESA TELLUMPANUA KAB. BARRU BERBASIS DATA CITRA Muh. Irwan; Angga Nugraha; Aksal Mursalat; Reza Asra; S Surianti
JURNAL GALUNG TROPIKA Vol 11 No 1 (2022)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v11i1.878

The duck livestock business is one of the business branches in the livestock sector which is now widely cultivated by the community. Especially in South Sulawesi, duck farming has increased over the last 5 years. This happened because the duck culinary business increased along with the increasing demand and purchasing power of the people. In the aspect of duck farming, the feed factor is one of the problems faced by farmers because the proportion of financing can reach 60-80%. To overcome this, one solution that can be done is to utilize locally available feed ingredients sustainably. Gosse (Ceratophyllum sp) is one type of aquatic plant which if its production is excessive in ponds, can harm the growth of milkfish and shrimp. Its potential is so great, that it is considered very worthy of research. This study aims to determine the potential of Gosse as feed for ducks based on the production of fresh material, dry matter, and carrying capacity based on Geographic Information System (GIS) data. The research method applied includes 4 stages, namely Geographic Information System (GIS) analysis, analysis of fresh and dry matter production, nutritional quality analysis, and production conversion to calculate carrying capacity. The results showed that the production of fresh matter reached 74.7 tons/ha/year and the production of the dry matter reached 4,482 tons/ha/year. The production of gosse in Tellumpanua Village in total reached 1,157.09 tons/year in a fresh state and 70.3674 tons//year in a dry state. Based on these data, the carrying capacity of gosse at 30%, 50%, and 70% use respectively is 270, 162, and 115 head/ha/year or 4239, 2543, and 1805 head/year.

PROYEKSI KERAWANAN BANJIR PADA LAHAN SAWAH BERBASIS MODEL IKLIM HadCM3 DI DAS BILA PROVINSI SULAWESI SELATAN A Abdullah; Risna Hardianty Haedar; Annas Boceng; Reza Asra
JURNAL GALUNG TROPIKA Vol 11 No 2 (2022)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v11i2.898

Sidenreng Rappang Regency is the center for developing rice production in South Sulawesi and is included in the Bila River Basin (DAS). Sidenreng Rappang, in the last five years, has experienced flooding every year, especially in Pitu Riawa District, Dua Pitue District, and Pitu Riase District. This study aims to project rainfall changes and vulnerability to flooding based on the HadCM3 climate model in the Bila watershed area. Analysis of changes in rainfall based on the HadCM3 climate prediction model with a short-term baseline (10 years). Data were analyzed spatially by scoring the parameters of flood vulnerability and validated through surveys and field observations. Data for each parameter is overlaid using a geographic information system (GIS). The actual flood vulnerability classification results were projected using the HadCM3 climate model and produced a flood hazard projection map with the HadCM3 model for the Bila watershed area. The HadCM3 model prediction shows an increase in rainfall from April to October, and high-intensity precipitation occurs in May, June, and July. The actual level of flood hazard in paddy fields in the Bila watershed area is classified as very high, with an area of 22,339.44 ha (56.75%), and the HadCM3 Climate Model projection is classified as high with an area of 25,260.71 ha (64.17%). Paddy fields in the Bila watershed have a high level of flood vulnerability.

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