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All Journal JURNAL GALUNG TROPIKA
A Abdullah
Universitas Muslim Indonesia
Agriculture, Biological Sciences & Forestry

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EFEKTIVITAS WAKTU PENGGENANGAN AIR TERHADAP PENGAWETAN LENGAS TANAH PADA TANAMAN KEDELAI A Aminah; A Abdullah; N Nuraeni; Marlyana S. Palad
JURNAL GALUNG TROPIKA Vol 8 No 3 (2019)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.552 KB) | DOI: 10.31850/jgt.v8i3.508

Abstract

Important factors that form the basis of water management are plant characteristics based on water requirements, the amount of water supplied, irrigation methods, and soil characteristics to conserve water. These factors are also influenced by local agroecological conditions such as climate, soil type, and availability of irrigation water. The study aimed to determine the effectiveness of inundation time on soybean growth and production to maintain soil moisture. The study was arranged in an experimental form using a Randomized Block Design (RBD) consisting of waterlogging time treatment (W), ie not flooded/field capacity (W0), inundation 0-15 days after planting (dap) (W1), inundation 15-30 dap (W2), inundation at 30-45 dap (W3), and inundation continuously until harvest (W4). The height of the water given was 5 cm. The results showed that continuous inundation until harvest increased the weight of seeds by 19.23% compared without inundation. This was evidenced by the increasing number of pods and number of seeds per plant by 31.1% and 37.59% compared to field capacity. Continuous inundation showed that the highest soil water content (moisture) compared to other treatments. As for the greenness of leaves, inundation at 15-30 dap showed the lowest greenness of leaves while the highest greenness of leaves is inundation 0-15 dap, and this was not significantly different from other treatments. Continuous inundation has shown the potential to increase soybean yield. These results indicated that the irrigation method until the soil was saturated with water or above the field capacity was still quite safe for the growth, development, and production of soybean plants.
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

Abstract

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.
Co-Authors Aminah M, Aminah Asra, Reza Boceng, Annas Nuraeni Nuraeni Palad, Marliana S. Risna Hardianty Haedar