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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Pelita Perkebunan (Coffee and Cocoa Research Journal) Dikmas: Jurnal Pendidikan Masyarakat dan Pengabdian
Didik Suprayogo
UNIVERSITAS BRAWIJAYA JL.VETERAN KODE POS 65145 MALANG - JAWA TIMUR - INDONESIA
Agriculture, Biological Sciences & Forestry Education Environmental Science

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Pemetaan Partisipatif LULC dan Kebakaran Hutan Bersama Masyarakat DAS Mikro Gumandar-Kedawung Aditya Nugraha Putra; Syamsu Ridzal Indra Hadi; Sativandi Riza; Rizki Maulana Ishaq; Syamsul Arifin; Sudarto Sudarto; Lenny Sri Nopriani; Nina Dwi Lestari; Yulia Amirul Fata; Khanza A’maladewi Sudharta; Dinna Hadi Solikah; Iva Dewi Lestariningsih; Erekso Hadiwijoyo; Raushanfikr Bushron; Rifqi Rahmat Hidayatullah; Didik Suprayogo
Dikmas: Jurnal Pendidikan Masyarakat dan Pengabdian Vol 2, No 4 (2022): December
Publisher : Magister Pendidikan Nonformal Pascasarjana Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/dikmas.2.4.1053-1068.2022

Abstract

Kebakaran hutan yang sering terjadi di kawasan hutan DAS Mikro Gumandar-Kedawung terjadi akibat faktor alam dan faktor sosial. Kondisi bagian hulu DAS mikro yang berbatasan langsung dengan padang rumput dan ilalang menyebabkan api menjalar cepat masuk ke kawasan hutan. Hal ini perparah dengan beberapa oknum dari masyarakat sekitar yang sengaja menyalakan api untuk berburu dan mencuri kayu di dalam hutan. Proses identifikasi lokasi rawan kebakaran dan perubahan penggunaan lahan yang menjadi dampak dari bencana ini lokasinya sangat sulit diidentifikasi oleh pengelola hutan dan masyarakat karena belum terdapat data spasial. Kegiatan pengabdian berbentuk pemetaan partisipatif (participatory mapping) ini bertujuan untuk mengidentifikasi wilayah di DAS Mikro Gumandar-Kedawung, terutama terkait pemahaman masyarakat terhadap lokasi bekas kebakaran dan perubahan penggunaan lahan, sehingga dapat ditentukan solusi dan lokasi dari upaya pemberian solusi tersebut oleh masyarakat sekitar. Hasil analisis dan groundcheck dengan masyarakat menunjukkan bahwa lokasi-lokasi terbuka (berdasarkan peta perubahan-tutupan lahan 2015-2022) bertambah di tahun 2022 seiring dengan berkurangnya hutan alami sekitar 11%. Lahan-lahan terbuka yang diidentifikasi dari perubahan penggunaan dan tutupan lahan telah dikonfirmasi oleh masyarakat bahwa seluruh titik lokasi kebakaran sesuai dengan kondisi aktual. Kesadaran masyarakat yang semakin meningkat terhadap kebakaran dibuktikan dengan adanya pembuatan sekat bakar dan upaya reboisasi di hutan alami. Bersama masyarakat, lokasi konservasi digambarkan di dalam peta sehingga tersusun data spasial yang dapat digunakan sebagai acuan monitoring dan evaluasi.
ESTIMASI SEBARAN DAERAH RAWAN BANJIR BANDANG SUB DAERAH ALIRAN SUNGAI SUMBER BRANTAS KOTA BATU : APLIKASI MODEL GENRIVER & SISTEM INFORMASI GEOGRAFI Adymas Putro Utomo; S Sudarto; Didik Suprayogo
Jurnal Tanah dan Sumberdaya Lahan Vol. 1 No. 2 (2014)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.315 KB)

Abstract

Flood is a major disaster which often occurred in last decade. Generally, land management in upper watershed is the main driving factor that cause flood. Upper watershed area should be intended for catchment area, but in fact land use change from natural forest become agriculture practices continuously happened. This research was done in September-October 2008 in Sumber Brantas sub watershed, City of Batu and some part of Malang Regency. Spatial analysis and land maping was done in Geographic Information System Laboratory of Soil Science Department, Brawijaya University. The objective of this research was to estimate troubled area of flash flood distribution. The parameters were:river flow discharge, slope, distance from river & elevation. The predicted river flow discharge was compared to actual river flow discharge and stastistically tested using doubled regression. This was done to know the accuracy of the model. River flow debit assessment using 15 micro sub watersheds with Thiessen Fraction Distribution (TFD-micro watershed) treatment result the most accurate river flow debit compared to field measurement. River flow debit assessment using one watershed with Average Thiessen (AT-watershed) treatment result lower accurate compared to TFD-micro watershed. In AT-watershed treatment river flow debit result is slightly close to measurement, but there are a significant difference in July and August. The worst result of the validation is the method using 15 micro sub watersheds with Average Thiessen. This caused by rainfall distribution which was used as input data was inappropriate with micro sub watershed distribution in Sumber Brantas sub watershed area. Totally the troubled area of flash flood based on troubled river area of flash flood is as much as 202.23 ha. Troubled area of flash flood is located in 4 Sub Regency, they are: Batu sub- regency as much as 29.39 ha, Bumiaji sub-Regency as much as 164.43 ha, Junrejo sub-Regency as much as 6.08 ha and Pujon sub-Regency as much as 2.43 ha.
STUDI NITRIFIKASI TANAH DENGAN PENAMBAHAN SERESAH ASAL HUTAN ALAMI DAN AGROFORESTRI KOPI Anita Kismi Qifli; Kurniatun Hairiah; Didik Suprayogo
Jurnal Tanah dan Sumberdaya Lahan Vol. 1 No. 2 (2014)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.345 KB)

Abstract

Forest conversion to coffee agro forestry has decreased quality and amount of litter fall, increase decomposition rate and litter fall mineralization. This research was aimed measuring soil nitrification rate by addition of forest, coffee based agro forestry with mix shade trees and legume-shaded coffee (Gliricidia sepium) and monoculture of coffee litter fall. This research that was conducted in May-June 2005 used Inceptisol  and litter fall of forest, coffee based agro forestry with mix shade trees and legume-shaded coffee (Gliricidia sepium) and monoculture of coffee from Bodong, Sumberjaya, Lampung Barat. Litter fall was collected by litter trap. This research was compiled in a completely randomized design with aerobic incubation method during 8 week in laboratory by 5 treatment addition of forest, coffee based agro forestry with mix shade trees and legume-shaded coffee (Gliricidia sepium), monoculture of coffee litter fall and control (non litter fall addition). Measurement conducted adding litter fall and soil has incubation during 2 weeks. Soil nitrification rate determined by comparing concentration of NH4+ and NO3- after added of litter fall. Data analysis was used one-way. Result of research showed that (1) addition of litter fall has significant (p<0.01) to concentration of NH4+ and NO3- - and N-mineral of soil (2) addition of litter fall has significant (p<0.01) to NH4+ /NO3- ratio (3) addition of coffee monoculture litter fall has yield concentration of NO3- higher than forest and coffee based agro forestry with mix shade trees litter fall (4) addition of coffee monoculture litter fall has yield ratio of NH4+ and NO3- lower (0.1mg kg-1) than addition of forest litter fall (1mg kg-1), coffee based agro forestry with mix shade trees litter fall (0.4mg kg-1) and legume-shaded coffee (Gliricidia sepium) litter fall (0.8mg kg-1). This result of research indicated that adding litter fall like forest, coffee based agro forestry with mix shade trees and legume-shaded coffee (Gliricidia sepium) litter fall can depress soil nitrification rate until 96%.
HUBUNGAN ANTARA PERBEDAAN KELAS KELERENGAN DENGAN KARAKTERISTIK KIMIA TANAH PADA PERKEBUNAN TEH JOLOTIGO LINGKUP PTPN IX Pipit Tandyana Febriantika; Faris Nur Fauzi Athallah; Restu Wulansari; Didik Suprayogo
Jurnal Tanah dan Sumberdaya Lahan Vol. 9 No. 1 (2022)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (541.275 KB) | DOI: 10.21776/ub.jtsl.2022.009.1.19

Abstract

Tea plantations are mostly more suitable to be cultivated in areas with highland characteristics to get its’ subtropical climate which is great for the growth of tea. This requirement showed that tea plantations are also cultivated in areas with different ranges of slope and this condition could affect soil chemical properties such as soil nutrient content, including soil pH, soil organic carbon (SOC) and contents of N, Available P, K and Mg inside the soil. This study was conducted to analyze the correlation on different slope levels with soil nutrient contents by collecting the secondary data of land slope and soil chemical properties, analyzed statistically with a simple correlation method. The result showed there was no significant correlation between the slope levels and contents of soil chemical properties. Most of the soil chemical properties have a negative correlation to different slope gradients such as soil pH (r = -0.391), SOC (r = -0.348), total N ( r = -0.169), Available P (r = - 0.039), K content (r = -0.135), Mg content (r = -0.027). where the highest levels of nutrients were found at the lowest level of slope based on the site data. Soil chemical properties are needed to be considered in many tea plantations with different levels of slope and could be used as a recommendation in planning for conservation or restoration of degraded land or soil.
Potential Nitrification and Nitrogen Mineral of Soil in Coffee Agroforestry System with Various Shading Trees Purwanto .; Eko Handayanto; Didik Suprayogo; John Bako Baon; Kurniatun Hairiah
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 23 No 1 (2007)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v23i1.49

Abstract

The role of shading trees in coffee farms has been well understood to establish suitable condition for the growth of coffee trees, on the other hand their role in nitrogen cycle in coffee farming is not yet well understood. The objectives of this study are to investigate the influence of various legume shading trees on the concentration of soil mineral N (N-NH4 + and N-NO3-), potential nitrification and to study the controlling factors of nitrification under field conditions. This field explorative research was carried out in Sumberjaya, West Lampung. Twelve observation plots covered four land use systems (LUS), i.e. 1) Coffee agroforestry with Gliricidiasepium as shade trees; 2) Coffee agroforestry with Gliricidiaas shade trees and Arachis pintoias cover crops; 3)Coffee agroforestry with Paraserianthes falcataria as shade trees; and 4) Mixed/multistrata coffee agroforestry with Gliricidiaand other fruit crops as shade trees. Measurements of soil mineral-N concentration were carried out every three weeks for three months. Results showed that shade tree species in coffee agroforestry significantly affected concentrations of soil NH4 +, NO3- and potential nitrification. Mixed coffee agroforestry had the highest NH4+/N-mineral ratio (7.16%) and the lowest potential nitrification (0.13 mg NO2-kg-1 hour -1 ) compared to other coffee agroforestry systems using single species of leguminous shade trees. Ratio of NH4 + /N-mineral increased 0.8—21% while potential nitrification decreased 55—79% in mixed coffee agroforestry compared to coffee agroforestry with Gliricidia or P. falcatariaas shade trees. Coffee agroforestry with P. falcatariaas shade trees had potential nitrification 53% lower and ratio of NH4 + /N-mineral concentration 20% higher than that with Gliricidia. Coffee agroforestry with P. falcataria as shade trees also had organic C content 17% higher, total N 40% higher, available P 112% higher than that with Gliricidia. The presence of A. pintoiin coffee agroforestry with Gliricidiareduced 56% potential nitrification but increased 19.3% of NH4+/N-mineral concentration. The low soil potential nitrification in the mixed coffee agroforestry had close relationship with the high content of soil organic matter. Key words : Nitrogen-mineral, nitrification, shading trees, agroforestry, Coffea canephora, nitrate, organic matter, intercropping,Gliricidia sepium, Arachis pintoi, Paraserianthes falcataria.
Co-Authors Aditya Nugraha Putra Adymas Putro Utomo Anita Kismi Qifli Arifin, Syamsul Dinna Hadi Solikah Eko Handayanto Erekso Hadiwijoyo Faris Nur Fauzi Athallah Fata, Yulia Amirul Iva Dewi Lestariningsih John Bako Baon Khanza A’maladewi Sudharta Kurniatun Hairiah Kurniatun Hairiah Lenny Sri Nopriani Nina Dwi Lestari Pipit Tandyana Febriantika Purwanto . Raushanfikr Bushron Restu Wulansari Rifqi Rahmat Hidayatullah Rizki Maulana Ishaq S Sudarto Sativandi Riza Sudarto Sudarto Syamsu Ridzal Indra Hadi