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All Journal Jurnal Ilmu Lingkungan Bulletin of Scientific Contribution : Geology Journal of Degraded and Mining Lands Management Kultivasi Soil REns Jurnal Agro Wiralodra
Benny Joy
Fakultas Pertanian Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science

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KAJIAN POTENSI CADANGAN KARBON (CARBON STOCK) HUTAN TANAMAN Acacia crassicarpa PADA LAHAN GAMBUT (STUDI KASUS DI HUTAN TANAMAN INDUSTRI KABUPATEN BENGKALIS, PROVINSI RIAU) Dwi Rahmayanti, Fetty; Joy, Benny; Husodo, Teguh
Jurnal Agro Wiralodra Vol 2 No 1 (2019): Jurnal Agro Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/agrowiralodra.v2i1.25

Abstract

Indonesia sebagai salah satu negara berkembang juga diwajibkan untuk mengurangi sumber emisi gas seperti CO2, emisi pabrik, transportasi dan penggunaan energi fosil pada pembangunannya. Salah satu usaha yang dilakukan dalam menghadapi meningkatnya gas rumah kaca adalah meningkatkan kemampuan vegetasi baik hutan, kebun dan tanaman lain dalam mengikat CO2. Karbon yang tersimpan pada hutan tanaman baik yang terdapat pada bagian atas dan bagian bawah merupakan suatu cadangan sumber daya alam yang dapat digunakan bagi keberlangsungan hidup terutama dalam kondisi krisis lingkungan global yang terjadi saat ini. Penelitian ini didasarkan pada pendugaan cadangan karbon pada biomassa, nekromassa Acacia crassicarpa dan tanah gambut hutan tanaman industri di Kabupaten Bengkalis Provinsi Riau. Tujuan penelitian ini adalah untuk menghitung cadangan karbon (carbon stock) pada biomassa, nekromassa Acacia crassicarpa dan tanah gambut hutan tanaman industri di Kabupaten Bengkalis Provinsi Riau dan mengestimasi pembangunan hutan tanaman industri yang berkelanjutan pada lahan gambut di Kabupaten Bengkalis Provinsi Riau. Metode yang digunakan pada penelitian ini melalui pendekatan metode dominant quantitative-less dominant qualitative dan metode pengumpulan data pada penelitian ini didominasi menggunakan metode survai. Hasil penelitian menunjukan bahwa besarnya cadangan karbon pada biomassa 2.808.363,28 t c/ha, nekromassa 2004, 437 t c/ha dan tanah gambut sebesar 560.938,5 t c/ha. Keberadaan hutan tanaman industri dapat memberikan jasa ekologis berupa cadangan karbon apabila dilakukan pengelolaan yang tepat, khususnya memiliki peluang simpanan pada nekromassa dan tanah gambut.
Effectiveness of water hyacinth compost and N, P, K, S fertilizer on S-available, S uptake, protein content, and yield of shallot in Inceptisols from Jatinangor Sofyan, Emma Trinurani; Gumelar, Fajar Akbar; Yuniarti, Anni; Joy, Benny; Wicaksono, Fiky Yulianto
Kultivasi Vol 22, No 1 (2023): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v22i1.38589

Abstract

. Water hyacinth (Eichhornia crassipes) is a source of organic matter that can be used as compost to improve the soil quality and productivity of shallots. Shallots are horticultural commodities that have various benefits. Inceptisol soils dominate Indonesia, with an area of 37.5% of Indonesia's land area but have low soil fertility. Soil fertility can be increased by optimal fertilization. This experiment aimed to determine the dose of water hyacinth compost and nitrogen (N), phosphor (P), potassium (K), sulfur (S) fertilizer which gave the best effect on increasing available S, S uptake, protein content, and yield of shallots. The experiment was conducted from July to October 2021 at the Experimental Garden of the Laboratory of Soil Chemistry and Plant Nutrition, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor. The experiment used a Randomized Block Design, consisting of seven treatments repeated four times. The recommended fertilizer doses used are 200 kg Urea, 500 kg ZA, 300 kg SP-36, and 200 kg KCl. The compost used was water hyacinth compost at a 25 t/ha dose. The results of this experiment showed that the treatment of ¾ compost + ¾ doses of N, P, K, and S was the best in increasing available S (26.79 mg kg-1), S uptake (7.03 mg/plant), protein content (0.95%), colors and shallot yield (number of tubers, fresh weight, and dry weight) on Inceptisols from Jatinangor.
The effect of cow manure amendment and the ratio of gold mine tailings on sweet potato gold phytomining Noviardi, Rhazista; Joy, Benny; Sudirja, Rija; Setiawati, Mieke Rochimi; Djuwansah, Muhamad Rachman; Karuniawan, Agung; Sofyan, Emma Trinurani; Suryatmana, Pujawati
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6665

Abstract

Artisanal and small-scale gold mining has commonly used the mercury amalgamation method for gold ore extraction. The processing waste or tailings often contain gold and other metals. This study examined the effects of cow manure amendment and the ratio of gold mine tailings on sweet potato     (Ipomoea batatas L.) gold phytomining. The pot experiment was conducted in the Faculty of Agriculture greenhouse at Padjadjaran University in Indonesia. The sweet potato MZ119 clone (an orange-fleshed sweet potato) was planted on a polybag (40 x 40 cm) consisting of 10 kg of planting media, which was a mixture of gold mine tailing and soil. The design used was a completely randomized design factorial with three replications. The first factor was ratios of gold mine tailing consisting of three levels, namely 30%, 50%, 70%, and 100% (w/w). The second factor was doses of organic manure, namely without cow manure, 250 g pot-1, 500 g pot-1, and 750 g pot-1. The results demonstrated that the application of cow dung and the gold mine tailings ratio (w/w) had a significant (p = 0.05) effect on plants' dry weight biomass, gold accumulation, and gold phytomining by sweet potato. The highest gold mass yield of 0.066 mg gold plant-1 was achieved by a 50% (w/w) gold mine tailing ratio and 750 g pot-1 cow manure treatment.
Perbandingan Respon Tanaman Terhadap Aplikasi Pupuk Majemuk: Analisis dan Temuan Utama Mulyani, Oviyanti; Joy, Benny; Remona, Rizkiyani
Soilrens Vol 22, No 1 (2024)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v22i1.57233

Abstract

The use of compound inorganic fertilizers in plant cultivation systems is on the rise because of their practicality, more comprehensive and homogeneous nutrient availability, and potential to reduce production costs. Different combinations of compound fertilizer products can generate a variety of responses in terms of plant growth. The aim of this investigation was to assess how plants responded to the components of their results, specifically the variations in two distinct compositions of compound fertilizers. This investigation divided 60 experimental sites into two groups, each using two distinct types of compound fertilizers. The macronutrient content of the compound fertilizers (NK and NP), distinguished them. This study employed nine treatments, which included a control (without fertilizer treatment), conventional NPK fertilizer, a combination of NPK fertilizers (3/4, and 1) doses with (1/2, 3/4, 1 and 1) doses of compound fertilizer, and a randomized block design Each treatment was repeated three times. The results of this study suggest that the application of compound fertilizer with two distinct compositions has a substantially different effect than the control treatment. In comparison to compound fertilizers with a higher potassium content, which have a yield component value of RAE 134%, the application of compound fertilizers with a higher phosphorus content can provide a higher yield component value of RAE 127.92%. The function of applying potassium-containing nutrients can produce better outcomes for corn plant than those with higher phosforus content, making it an interesting study that should be investigated further in the future
Respons N-Total, P-Potensial dan K-Potensial dan Hasil Jagung Manis (Zea mays saccharata Sturt) akibat Pemberian Pemupukan Pupuk Organik Remah dan NPK pada Tanah Inceptisol Sara, Dirga Sapta; Sofyan, Emma Trinurani; Joy, Benny
Soilrens Vol 22, No 1 (2024)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v22i1.57246

Abstract

Sweet corn is an agricultural commodity that has increasing market demand and high economic value. To achieve optimal production results, proper fertilization is very important, especially on Inceptisol soils that have low to medium fertility. This study aimed to evaluate the combination of crumb organic fertilizer and NPK fertilizer on soil N-total, P-potential, and K-potential as well as sweet corn crop yield. The experiment was conducted from September to December 2023 at the Experimental Field, Padjadjaran University, using Inceptisol soil, sweet corn seeds, crumb organic fertilizer, and NPK fertilizer (15-15-15). Randomized Group Design, six treatments including control, recommended dose of NPK fertilizer, and combination of crumb organic fertilizer with NPK, repeated 4 times. Analysis in the maximum vegetative phase at 55 HST with testing parameters including soil N-total (Kjeldahl method), P-potential (Bray method), K-potential (ammonium acetate method). The results showed that the combination of ¾ NPK and 1 ½ crumb organic fertilizer was effective in increasing soil N-total, P and K-potential and sweet corn yield.
ANALISIS HASIL AIR (“WATER YIELD”) BERDASARKAN DEBIT ALIRAN SUNGAI, DTA CITARIK BAGIAN HULU, DESA TANJUNGWANGI, KECAMATAN CICALENGKA, KABUPATEN BANDUNG JAWA BARAT Haryanto, Edi Tri; Hendarmawan, Hendarmawan; Sukiyah, Emi; Joy, Benny
Bulletin of Scientific Contribution Vol 15, No 1 (2017): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (909.79 KB)

Abstract

AbstrakPenelitian hasil air berdasarkan debit aliran sungai Daerah Tangkapan Air (DTA) Citarik Hulu, Jawa-Barat  ini bertujuan untuk mendapatkan data hasil air dan analisis debit aliran pada sungai-sungai kecil yang ada di Desa Tanjungwangi, Kecamatan Cicalengka, Kabupaten Bandung, dan Desa Sindulang, Kecamatan Cimanggung, Kabupaten Sumedang,  Jawa-Barat. Metoda penelitian adalah dengan melakukan pengukuran debit aliran sungai menggunakan alat “current meter” dan pengukuran curah hujan dengan alat ukur curah hujan manual, dengan mencatatan harian. Hasil penelitian menunjukkan bahwa hasil air (“water yield”) rata-rata harian pada sub-sub DAS di sebelah selatan, yaitu di Desa Tanjungwangi lebih kecil disbanding  dengan sub-sub DAS di sebelah utara  di Desa Sindulang, Kecamatan Cimanggung, Kabupaten Sumedang, disebabkan oleh  prosentase air yang  tersuplesi ke dalam air tanah, sub-DAS di sebelah selatan  lebih besar.AbstractThe research of  water  yield  based on  river flow  of   Upper  Citarik Catchments, West-Java aims to get water yield data and to analyze flow discharge of small rivers in Tanjungwangi Village, Cicalengka Sub District, Bandung Regency, and small rivers in  the village of  Sindulang,  Cimanggung Sub-District, Sumedang Regency, West Java.  The research  method  is by measuring the flow discharge of the river using "current meter" and  measuring daily  rainfall with  rainfall  measurements  devices manually. The results showed that daily average  water yield  in the  south ,sub-sub-catchments which is in the village of Tanjungwangi smaller that of the north  sub-catchments in the village of Sindulang  due to the percentage of water that infiltrate in to the groundwater, sub-catchment in south were larger.
Karakteristik Daerah Aliran Sungai (DAS) Air Bengkulu dan Perubahan Penggunaan Lahannya dalam Kaitannya dengan Kejadian Banjir Saraswati, Gredia Sekar; Asdak, Chay; Joy, Benny
Jurnal Ilmu Lingkungan Vol 23, No 4 (2025): July 2025
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.23.4.915-922

Abstract

Daerah Aliran Sungai (DAS) merupakan suatu areal tempat berlangsungnya proses-proses biofisik hidrologis; yang menerima, mengumpulkan air hujan, sedimen dan unsur hara serta mengalirkannya pada sungai utama ke laut atau danau.  Salah satu DAS dengan kepadatan penduduknya paling tinggi di Provinsi Bengkulu adalah DAS Air Bengkulu.  Penelitian ini dilakukan untuk melakukan pengkajian terhadap karakteristik DAS Air Bengkulu, perubahan penggunaan lahan tahun 2013-2022 dan hubungannya dengan frekuensi kejadian banjir. Analisis sistem informasi geografis (SIG), analisis data curah hujan harian, dan Statistical Package for the Social Sciences (SPSS) digunakan dalam penelitian ini.  Hasil penelitian menunjukkan bahwa DAS Air Bengkulu memiliki luas ± 50.035 ha, keliling DAS-nya 110,63 km, Panjang sungai utama 57,91 km, lebar DAS-nya 20,13 km, Panjang DAS-nya 37,93 km, ketinggian tempat 0-1.000 mdpl, dan jumlah sungai keseluruhan 14 buah. Bentuk DAS ini termasuk paralel, dengan pola aliran sungainya denditrik dan nilai kerapatan sungai 1,06. DAS Air Bengkulu ini termasuk kategori yang harus dipulihkan karena memiliki lahan kritis yang luas. Dalam kurun waktu 10 tahun (2012-2021) telah terjadi perubahan penggunaan lahan di DAS Air Bengkulu. Penggunaan lahan berupa hutan berkurang seluas 2.684 ha (5,4%), perkebunan sawit bertambah 1.966 ha (3,9%), pemukiman bertambah 2.800 ha (5,6%), lahan pertanian campur bertambah 1.973 ha (3,9%), dan areal pertambangan bertambah 1.637 ha (3,2%).  Fluktuasi kejadian banjir yang terjadi di DAS Air Bengkulu dipengaruhi oleh intensitas curah hujan dan penggunaan lahannya. Korelasi luasan lahan pertanian, pemukiman, sawah; perkebunan dan pertambangan bernilai positif artinya meningkatnya jumlah penggunaan ini akan meningkatkan nilai debitnya.  Korelasi luasan hutan dan semak belukar bernilai negatif artinya meningkatnya luas penggunaan lahan ini akan menurunkan debit sungainya. Kelas penggunaan lahan dan curah hujan memiliki hubungan yang kuat terhadap debit total, dengan nilai diterminasi 95%.
Enhancing sustainable rice production through organic plus fertilizer in irrigated paddy fields Mulyani, Oviyanti; Sofyan, Emma Trinurani; Citraresmini, Ania; Joy, Benny; Husen, Anne Yuliana
Kultivasi Vol 24, No 2 (2025): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v24i2.64985

Abstract

Sustainable rice farming is increasingly threatened by declining soil fertility, excessive reliance on chemical fertilizers, and environmental degradation from intensive agricultural practices. There is an urgent need for innovative organic fertilizer products that combine organic materials with macro and micronutrient enhancements to restore soil health effectively. This research aimed to evaluate the effect of organic plus fertilizer (OPF) as a sustainable soil amendment to improve soil nutrient status, increase paddy productivity, and enhance overall soil health. The experiment was conducted using a Randomized Block Design (RBD) with nine treatments: one recommended OPF dose, six combinations of NPK (75 – 100%) and OPF (75 – 150%), one recommended conventional NPK dose, and one control. Variables observed included plant growth, yield, and yield components, total soil nitrogen, and plant uptake of N, P, and K. Results indicated that OPF combined with NPK significantly increased plant height (29.13 – 31.38%) and number of panicles (57.89%) compared to the control. Nutrient uptake improved for nitrogen (23.68%) and potassium (15.96 – 21.28%), although no significant improvement was observed for phosphorus. Yield parameters showed an 81.97%–118.50% increase over the control. The combinations of 75% NPK + 150% OPF, 100% NPK + 75% OPF, and 100% NPK + 100% OPF produced taller plants, higher yields, greater nutrient uptake, and lower residual nitrogen in the soil. For optimal rice yield and soil health, integrated application of OPF with either a full or 75% NPK dose is recommended.
Co-Authors Agung Karuniawan Ania Citraresmini Anni Yuniarti Chay Asdak Dirga Sapta Sara Djuwansah, Muhamad Rachman Edi Tri Haryanto, Edi Tri Emi Sukiyah Emma Trinurani Sofyan Fiky Yulianto Wicaksono Gumelar, Fajar Akbar Hendarmawan Hendarmawan, Hendarmawan Husen, Anne Yuliana Mieke Rochimi Setiawati Nana Danapriatna Oviyanti Mulyani Pujawati Suryatmana Rahmayanti, Fetty Dwi Remona, Rizkiyani Rhazista Noviardi Rija Sudirja Saraswati, Gredia Sekar TEGUH HUSODO Tualar Simarmata