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All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Ilmu Lingkungan Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Jurnal Pusat Inovasi Masyarakat (JPIM)
Wahyu Purwakusuma
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian, IPB University
Agriculture, Biological Sciences & Forestry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science Social Sciences Veterinary

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Ketahanan Tanaman Bunga Matahari (Helianthus annuus L.) terhadap Cekaman Air dengan Aplikasi Hidrogel dan Waktu Penyiraman pada Regosol: Resistance of Sunflower (Helianthus annuus L.) on Water Stress by Application of Hydrogel and Watering Time in Regosol Lilik Tri Indriyati; Wahyu Purwakusuma; Septi Ichwani
Jurnal Ilmu Tanah dan Lingkungan Vol 23 No 2 (2021): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.23.2.72-77

Abstract

Application of hydrogel as soil conditioner can increase water and/or nutrient of coursed textured soil, with a possible reduction of irrigation frequency, and in turn increase plant growth. This research was aimed to investigate application of type of hydrogel and time of watering interval on the growth of sunflower plant, soil water availability, and plant resistance to water stress, and to verify the effect of combination of hydrogel type and watering time interval on sunflower growth on Regosol from Dramaga, Bogor. The experiment was arranged in completely randomized factorial design with two factors, that were hydrogel type which was consisted of no hydrogel application as control (H0), hydrogel of Terracottemâ (H1), and hydrogel of synthetic super absorbent (H2); and watering time interval which was consisted of once in 5 days of watering (P1), once in 10 days of watering (P2), and once in 15 days of watering (P3). Hydrogels application was conducted shortly before two weeks old seeds of IPB BM1 genotype sunflower were transplanted in pot containing Regosol which was equivalent to 10 kg of oven- dry weight. Variables observed were soil moisture (soil water content), soil water retention in some soil-water matric suction (pF), leaf area, stem diameter, and root length. Results of experiment showed that hydrogel application significantly increased the water availability for plants in dried soil condition as a result of long time interval of watering, stem diameter of plant, and root length of sunflower compared with no hydrogel application (control). Soil moisture, stem diameter, and root length of treatment with hydrogel of H1 were not significantly different with that of H2. Time interval of watering significantly affected leaf area, stem diameter, and soil moisture. The leaf area, stem diameter of plant, and soil moisture in once watering in 15 days (P3) were significantly lower than P1. Combination between hydrogel of Terracotem (H1) and time interval of once a five days of watering (P1) was the best treatment combination in improving the growth of sunflower plant in Regosol from Dramaga, Bogor.
Pengaruh PhytoRemediator Tanaman Kayu Apu (Pistia stratiotes) dan Kiambang (Salvinia molesta) pada Kualitas Air Graywater untuk Hidroponik Tanaman Selada (Lactuca sativa) Oteng Haridjaja; Wahyu Purwakusuma; Ratih Safitri
Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Vol. 1 No. 1 (2011): Jurnal Sains Terapan, Volume 1, Nomor 1, Tahun 2011
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (763.633 KB) | DOI: 10.29244/jstsv.1.1.14-22

Abstract

Graywater of domestic waste has a  biodegradable organic matter characteristics which can be decreased by using waterwaste phytoremediator method. The objective of this research was to study the effect of Pistia Stratiotes and Salvinia Molesta on water quality for hydrophonic media of Lactuca Sativa production. Greenhouse experiments were conducted at Darmaga Research Station, Bogor. A complete factorial experimental design with three replications was used. The first factor was two waterwaste circulation remediator tank types (WWCRTT), and the second factor was a control, Pistia and Salvinia treatments.  The results of these experiments showed that:  the influence of plant has a significant difference to water COD at zero to one week after planting(WAP), and the influence of WWCRTT has also a significant difference to water COD at three WAP. The influence of WWCRTT has a significant difference to P-water content at zero, two, and three WAP. Plants, WWCRTT and their combinations have significant diference on NO3-water content at one WAP. The total of P and NO3 water contents were not sufficient for plant growth, and the influence of  flooding water and bad drainage can decrease plant yield.Key words: graywater, hydrophonic, phytoremediator
Water quality in areas around Galuga Landfill, Bogor Regency, West Java Yayat Hidayat; Wahyu Purwakusuma; Sri Malahayati Yusuf; Latief Mahir Rachman; Enni Dwi Wahjunie; Dwi Putro Tejo Baskoro; Aditia Sapto Utomo; Elianah
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 11 No. 4 (2021): Journal of Natural Resources and Environmental Management
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.11.4.578-586

Abstract

The research is aimed to analyze leachate, surface water and ground water characteristics around Galuga landfill site, Bogor District. Water samples had been taken in dry season of 2014 and in the end of rainy season of 2015 from several sites in areas around Galuga landfills which included leachate water, surface water, and ground water. Leachate, surface water and ground water had temperature and pH in normal ranges; whereas nitrate and Pb contents were high to very high levels, especially in site adjacent to waste piles. The concentrations decreased in line with increasing distance from waste piles. Higher content of nitrate in leachate occurred in dry season, but in well water it was found in rainy season. Meanwhile, Pb content in well water were high, both in dry and rainy seasons. Concentrations of nitrate and Pb in leachate water were higher than wastewater quality standard, so that the leachate water were not safe to be discharged directly to natural water body. The high content of nitrate and Pb caused the well water unsuitable to be consumed without water treatment processing.
Sosialisasi Pembuatan Kompos sebagai Upaya Menanggulangi Sampah Organik di Desa Sirnagalih Amelia Paramitha Mahanani; Nur Paisah Pasaribu; Wahyu Purwakusuma
Jurnal Pusat Inovasi Masyarakat (PIM) Vol. 2 No. 4 (2020): Juni 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.385 KB)

Abstract

Sirnagalih Village is a village that has undergone urbanization with a large number of population that generates a lot of garbage from every household, both organic and non-organic waste. One of the organic waste that is not utilized by the community is the remaining taro plants. Taro can be processed into compost that can fertilize plants. But unfortunately not many people are aware of the importance of using organic waste to be made more useful. This has led to the implementation of community assistance programs, namely socialization and composting. The purpose of this socialization and composting facilitation assistance is to increase public awareness in utilizing organic waste based on waste problems that occur in Sirnagalih Village. The method used is by interviewing the public about issues related to waste, socializing waste segregation, and making compost with the community. The result of this socialization is that farmers can process taro into compost and increase farmers' awareness of the importance of utilizing waste, especially organic waste so that it can benefit the plants again. The development of composting skills from other organic waste needs to be carried out independently by the community. In this regard, various parties including Bappeda, village government, institutions, and village government can work together well so that community service activities can run well and can develop the potential of local villages. Keywords: compost, leftover taro harvest, organic waste, utilization
Sosialisasi Penggunaan Lahan Sempit melalui Pemanfaatan Pekarangan Rumah di Desa Sirnagalih Maudy Susanti; Nur Paisah Pasaribu; Wahyu Purwakusuma
Jurnal Pusat Inovasi Masyarakat (PIM) Vol. 2 No. 4 (2020): Juni 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (539.18 KB)

Abstract

Sirnagalih Village is a village located relatively close to Bogor City, although it is still included in the area of Bogor Regency. The location is close to urban areas, making the social life of the people of Sirnagalih Village almost the same as urban areas. It was not only the condition of the community that was changing, but also the increase in infrastructure development felt by the villagers. This condition causes a reduction in green open space and land for agriculture. Land limitations can be overcome by optimizing the land around the house or yard. The purpose of this program is to provide awareness to the community to be able to utilize existing land optimally so that it can provide benefits to the environment (greening facilities). The program was carried out on Thursday 27 June 2019 in Sirnagalih Village and was divided into 2 stages, namely socialization and demonstration. The socialization was delivered to the representatives of the ladies and gentlemen from each RW in Sirnagalih Village. The socialization activities were divided into a number of events, ranging from the delivery of material to discussions with the people of Sirnagalih Village. The material presented in the form of potential yards that are important to be developed, types of plants that can be planted in the yard and how to plant it, examples of yards that are decorated for an effort to beautify parts of the house, and the benefits of joining the Yard Utilization Program. In addition, sketches were also made in the form of house plans and plots of land so that participants could draw plans for their use. During the socialization activities, the community seemed enthusiastic listening to the material and giving questions. Keywords: Land, Sirnagalih Village, socialization
Prediksi Debit Puncak DAS Ciliwung Hulu sebagai Pengendali Jasa Lingkungan Hidrologi Enni Dwi Wahjunie; Yayat Hidayat; Kardina Yulia Dewanti; Wahyu Purwakusuma
Jurnal Ilmu Lingkungan Vol 21, No 4 (2023): October 2023
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.21.4.946-955

Abstract

ABSTRAKDebit puncak aliran sungai Ciliwung bagian hulu dalam periode ulang tertentu merupakan informasi yang sangat penting dalam perencanaan pengendalian banjir maupun pemanfaatan sumberdaya air. Debit puncak aliran sungai utama tersebut dipengaruhi oleh debit aliran sungai dari setiap subDAS yang masuk ke sungai utama. Namun, Stasiun Pengamat Arus Sungai (SPAS) sebagai  sarana pengukur debit tidak tersedia di setiap Sub DAS. Tujuan penelitian ini adalah mengkaji akurasi Model Rasional dalam memprediksi debit puncak dan melakukan pendugaan debit puncak pada tiap Sub DAS Ciliwung Hulu. Pendugaan debit puncak dilakukan dengan metode Rasional menggunakan distribusi peluang.  Hasil penelitian menunjukkan bahwa prediksi debit puncak menggunakan metode Rasional dengan periode ulang T1 hingga T10 tahun memiliki  akurasi yang baik dengan R2 = 0,98 dan Nash-Sutcliffe Efficiency (NSE) = 0,14 pada distribusi Gumbel, sementara pada distribusi Log Pearson tipe III dengan R2 = 0,99 dan NSE = 0,86. Dengan demikian, model Rational dengan distribusi Log Pearson tipe III lebih layak digunakan sebagai prediksi debit puncak pada periode ulang T1 hingga T10, T25, T50 dan T100 tahun. Selanjutnya model Rational dengan distribusi Log Pearson tipe III  dapat digunakan untuk memprediksi debit puncak aliran sungai di tiap sub DAS Ciliwung Hulu, yaitu Sub DAS Cibalok, Ciesek, Ciliwung Hulu, Cisarua, Ciseuseupan, Cisukabiru, dan Cisuren. Berdasarkan pendugaan dengan metode Rational, nilai debit puncak prediksi terendah pada periode ulang 1 tahun terjadi di Sub DAS Cibalok sebesar 8,67 m³/detik dan tertinggi di Sub DAS Ciliwung Hulu sebesar 42,16 m³/detik.   Data prediksi debit puncak dari tiap subDAS Ciliwung hulu ini dapat menjadi informasi yang sangat penting dalam pengendalian sumberdaya air di DAS Ciliwung Hulu.Kata kunci: Debit puncak, distribusi Gumbel, distribusi Log Pearson Tipe III, metode Rasional, periode ulangABSTRACTThe peak discharge of the Upstream Ciliwung in certain period is very important information in flood control planning and utilization of water resources. The peak discharge of the main river is influenced by the discharge of the river flow from each sub watershed that enters the main river. However, the Stream Flow Observer Station (SPAS) as a means of measuring discharge  in every sub-watershed is not available. The purpose of this study was to examine the accuracy of the Rational Model in predicting peak discharge in each of the Upper Ciliwung Sub-Watershed.  The Peak discharge estimation was carried out using the Rational method with a probability distribution.  The result showed that the prediction of peak discharge using the Rational method with a return period of T1 to T10 years had a good accuracy with R2 = 0,98 and Nash-Sutcliffe Efficiency (NSE) = 0,14 in the Gumbel distribution, while in the Log Pearson type III distribution with R2 = 0,99 and NSE = 0,86.  Thus, the Rational model with Log Pearson Type III distribution is more suitable to be used as a prediction of peak discharge in the return period T1 to T10, T25, T50, and T100 years.  Furthermore, the Rational model with the Log Pearson distribution Type III can be used to predict the peak discharge of the stream flow in each of the Upper Ciliwung  Sub-Watershed, namely the Cibalok, Ciesek, Ciliwung Hulu, Cisarua, Cisesuseupan, Cisukabiru, and Cisuren.  Based on the estimation using the Rational method, the lowest predicted peak discharge value in the 1-year return period occurs in the Cibalok Watershed at 8.67m3/second and the hihgest in the Ciliwung Hulu Watershed at 42.16 m3/second.  The predicted peak discharge data from each upstream Ciliwung sub-Watershed can be very important information  for  controlling water resources in the Upper Ciliwung Watershed.Keyword: Gumbel distribution, Log Pearson Type III distribution, Peak discharge, Rational method, return Period.
Co-Authors Aditia Sapto Utomo Amelia Paramitha Mahanani Dwi Putro Tejo Baskoro Elianah Enni Dwi Wahjunie Enni Dwi Wahjunie Kardina Yulia Dewanti Latief Mahir Rachman Lilik Tri Indriyati, Lilik Tri Maudy Susanti Nur Paisah Pasaribu Oteng Haridjaja Ratih Safitri Septi Ichwani Yayat Hidayat Yayat Hidayat Yusuf, Sri Malahayati