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All Journal Vegetalika Jurnal Wilayah dan Lingkungan
Tamad Tamad
Fakultas Pertanian, Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Pengelolaan Hulu Sub-DAS Logawa dalam Perda Penataan Ruang Kabupaten Banyumas Budi Prabowo As'attohara; Imam Santosa; Tamad Tamad
Jurnal Wilayah dan Lingkungan Vol 9, No 3 (2021): December 2021
Publisher : Department of Urban and Regional Planning, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jwl.9.3.256-271

Abstract

The watersheds upstream degradation in Java, is alarming and trigger changes to overall hydrological character of watersheds and its ecosystem services. Maintaining healthy watershed from future degradation can be initiated by a means formulating policies and designing appropriate management plan. The Logawa sub-watershed is not a critical watershed, nonetheless the upstream is part of mountain slope with very high annual rainfall. The headwater of Logawa sub-watershed plays an important role in catching annual rainfall and provide the underground and surface water supply for Kota Purwokerto. It is important to study the government's regulation related on its management, to determine the current management policy. This study aims to analyze the district level spatial and regional planning regulation related to the upstream management of the Logawa Sub-watershed. When this study was conducted, Local Government Regulation Number 10 year of 2011, concerning regional spatial planning was the only regulation of the Banyumas district that could regulate management of the upstream zone of Logawa sub-watersheed. This spatial regulation assign the upstream area of the Logawa sub-watershed as conservation zone, as well as the development area for generating electricity and river tourism, but does not specifically stipulate a minimum conservation zone forest land cover. The regulation is not sufficient for managing healthyness of the upstream Logawa Sub-watershed for the future, as well as to manage the upstream zone of the Logawa Sub-watershed as an upstream watershed ecosystem.
Aplikasi AB Mix dan POC Limbah Pertanian terhadap Sawi Pagoda (Brassica narinosa L.) Hidroponik Sistem Wick Kezia Maharani Hutajulu; Okti Herliana; Muhammad Bachtiar Mustafa; Tamad Tamad; Ni Wayan Anik Leana; Ahmad Fauzi
Vegetalika Vol 14, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.104287

Abstract

Hydroponic cultivation of pagoda mustard (Brassica narinosa L.) is a solution to increase production time efficiency and produce cleaner and more nutritious vegetables. However, the high price of AB mix fertilizer is an obstacle for hydroponic farmers, so alternative sources of nutrients are needed, such as Liquid Organic Fertilizer (LOF), which utilizes agricultural waste to make it more economical. This study was conducted from July to September 2024 at the screenhouse of the Experimental Farm of Jenderal Soedirman University, Purwokerto, using a Randomized Block Design (RBD) with two treatment factors: the first treatment was the concentration of AB Mix fertilizer (A), which consisted of four levels, namely A0 (0% AB Mix), A1 (25% AB Mix), A2 (AB Mix 50%), and A3 (AB Mix 100%). The second treatment was the concentration of POC (Liquid Organic Fertilizer) from agricultural waste (P) with three levels: P1 (POC 10 mL/L), P2 (POC 20 mL/L), and P3 (POC 30 mL/L). The data were analyzed using analysis of variance, followed by Duncan's Multiple Range Test (DMRT) at a 95% confidence level. The results showed that the 100% AB mix fertilizer concentration produced the highest results in terms of the number of leaves (up to 57), fresh plant weight (up to 92.22 g), dry plant weight (up to 7.35 g), and chlorophyll content (up to 20.73 mg/L). Substitution of agricultural waste POC increased the number of leaves by 2 leaves and fresh plant weight by 54.15 g at a concentration of 16.7 mL/L. The combination of 50% AB mix with 30 ml/L POC provided the best results in increasing nitrogen uptake, plant height, and leaf area.
Co-Authors Ahmad Fauzi Budi Prabowo As'attohara Herliana, Okti Imam Santosa Kezia Maharani Hutajulu Muhammad Bachtiar Mustafa Ni Wayan Anik Leana