Jaka Suyana
Universitas Sebelas Maret Surakarta

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LAJU PERTUMBUHAN DAN PENAMBATAN N2 AZOLLA PADA BERBAGAI INTENSITAS PENYINARAN DAN TINGGI GENANGAN Suyana, Jaka; Sudadi, Sudadi; Supriyadi, Supriyadi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 1, No 1 (2001)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v1i1.88

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STUDI KUALITAS AIR DAN SUMBANGAN HARA DARI IRIGASI SIDEREJO-JAWA TENGAH PADA BUDIDAYA PADI SAWAH Suyana, Jaka; Widijanto, Hery
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 1, No 2 (2002)
Publisher : Fakultas Pertanian Universitas Sebelas Maret

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KAJIAN TINGKAT DEGRADASI LAHAN DAN KEMAMPUAN LAHAN PADA USAHATANI LAHAN KERING BERBASIS TEMBAKAU DI SUB-DAS PROGO HULU Suyana, Jaka
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 6, No 2 (2009)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v6i2.54

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The recent and also the future problems for Indonesian concerning with agricultural environment resources are land degradation and water resources restrictiveness. Agricultural technique without awareness to concerning to soil and water conservation principles on steep and high rainfall area had caused severe erosion and land degradation at upland area of Progo Hulu sub-watershed. Land Degradation that promoted by erosion at Progo Hulu sub-watershed contributed negative effects at on-site and out-site area. The results showed that: (1) The degradation levels on upland farming area of Progo Hulu sub-watershed (7.398,54 ha) are classified as: low (708.71 ha or 9.58%), moderate (5,119.15 ha or 69.19%) and high (1,570.68 ha or 21.23%); (2) The land capability classes were dominated by Class IV (3,624.93 ha or 49.00%), followed with Class VI (2,488.82 ha or 33.64%), Class III (697.99 ha or 9.43%), Class V (450.73 ha or 6.09%), and Class VII (136.06 ha or 1.84%). Keywords: land capability, land degradation, Progo Hulu Sub-watershed
PREDIKSI EROSI DAN SEDIMENTASI DENGAN METODE USLE DAN MUSLE PADA KAWASAN HUTAN JATI (Tectona Grandis LF ) Dl KPH CEPU JAWA TENGAH Sutarno, Sutarno; Suyana, Jaka
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 3, No 2 (2003)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v3i2.112

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KAJIAN KEMAMPUAN LAHAN PADA USAHATANI LAHAN KERING BERBASIS TEMBAKAU DI SUB-DAS PROGO HULU Suyana, Jaka; Sinukaban, Naik; Sanim, Bunasor; Purwanto, M.Yanuar J
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 7, No 1 (2010)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v7i1.46

Abstract

The recent and also the future problems for Indonesian concerning with agricultural environment resources are land degradation and water resources restrictiveness. Agricultural technique without awareness to concerning to soil and water conservation principles on steep and high rainfall area had caused severe erosion and land degradation at upland area of Progo Hulu sub-watershed. Land Degradation that promoted by erosion at Progo Hulu sub-watershed contributed negative effects at on-site and out-site area. The land capability analysis shows that tobacco-based farming system at Progo Hulu sub watershed dominated by class IV (3,624.93 ha; 49.00%), followed with class VI (2,488.82 ha; 33.64%), class III (697.99 ha; 9.43%), class V (450.73 ha; 6.09%), and class VII (136.06 ha; 1.84%). The main resistance factors are slope and erosion for class III; erosion, slope and surface rocks for class VI; and slope for class VII. Keywords: land capability, Progo Hulu Sub-watershed
ANALISIS KEBERLANJUTAN BIOFISIK LAHAN PADA BEBERAPA TIPE AGROEKOSISTEM DI SUB-DAS SAMIN, DAS BENGAWAN SOLO Suyana, Jaka
Sains Tanah Vol 3, No 1 (2003)
Publisher : Fakultas Pertanian Universitas Sebelas Maret

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Perencanaan Usaha Tani Lahan Kering Berkelanjutan Berbasis Tembakaudi Sub-DAS Progo Hulu (Kabupaten Temanggung, Provinsi Jawa Tengah) Suyana, Jaka
Buletin Tanaman Tembakau, Serat & Minyak Industri Vol 6, No 1 (2014): April 2014
Publisher : Balai Penelitian Tanaman Pemanis dan Serat (Balittas)

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Akibat dari teknik budi daya yang kurang mengindahkan kaidah konservasi tanah dan air, pada kemiringan berbukit dan curam, serta curah hujan yang tinggi pada usaha tani lahan kering berbasis tembakau di Sub-DAS Progo Hulu telah menyebabkan terjadinya erosi yang parah dan degradasi lahan. Penelitian ini bertuju-an: (1) mengkaji kondisi biofisik lahan dan karakteristik usaha tani lahan kering berbasis tembakau di Sub-DAS Progo hulu; (2) mengkaji pengaruh teknologi konservasi tanah dan air (KTA) spesifik lokasi terhadap limpasan permukaan dan erosi; dan (3) merumuskan perencanaan sistem pertanian konservasi untuk mewu-judkan sistem usaha tani lahan kering berkelanjutan berbasis tembakau di Sub-DAS Progo Hulu. Penelitian dilakukan menggunakan metode survei, percobaan lapangan, dan analisis di laboratorium. Data karakteristik lahan, karakteristik usaha tani, serta data limpasan permukaan dan erosi dianalisis secara deskriptif dan dilan-jutkan dengan analisis ragam (uji F) dan uji HSD 5%. Selanjutnya pengembangan rekomendasi agroteknolo-gi diformulasikan melalui teknik simulasi dengan program Powersim Versi 2.5d. Hasil penelitian menunjukan bahwa penggunaan lahan pada usaha tani lahan kering berbasis tembakau di Sub-DAS Progo Hulu pada umumnya (58,4%) sesuai dengan kelas kemampuan lahan dan sisanya 41,6% tidak sesuai dengan kelas ke-mampuan lahan. Terdapat 77,2% lahan memiliki nilai prediksi erosi lebih besar dari nilai erosi yang dapat di-toleransikan (ETol) dan perlu penyempurnaan dalam teknologi KTA. Usaha tani lahan kering berbasis usaha tani tembakau di Sub-DAS Progo Hulu didominasi pola tanam jagung-tembakau (51,0%) dan cabai-temba-au (29,2%), dengan pendapatan usaha tani masih di atas nilai kebutuhan hidup layak (KHL). Perlakuan pem-berian mulsa batang tembakau dikombinasikan rumput penguat teras (Setaria spacelata) dapat menekan erosi 15–19% pada dosis 7 ton/ha dan 31–43% pada dosis 14 ton/ha batang tembakau, sedangkan tumpang sari koro merah dengan tembakau dikombinasikan penggunaan mulsa batang tembakau 7 ton/ha dapat menekan erosi 13–20%. Pengembangan usaha tani lahan kering berkelanjutan berbasis tembakau di Sub-DAS Progo Hulu dapat diwujudkan dengan penyempurnaan teknologi KTA yang meliputi: (a) perlakuan rumput setaria sebagai penguat teras + mulsa batang tembakau 7 ton/ha atau perlakuan tumpang sari koro merah dengan tembakau + mulsa batang tembakau 7 ton/ha pada kemiringan lereng 8–15%; (b) teras miring + perlakuan rorak pada kemiringan lereng 15–30%; dan (c) perlakuan rumput setaria sebagai penguat teras miring + mulsa batang tembakau 14 ton/ha + rorak pada kemiringan lereng >30%.  Due to inadequate soil and water conservation practices in farming activity at tobacco based farming sys-tems, severe erosion and land degradation had been occuring in almost all upland agriculture in Progo Hulu Sub-watershed. This research was conducted: (1) to study land’s biophysic conditions and the characteris-tics of tobacco based farming systems, (2) to study and analyze the impact of various soil and water conser-vation practices on erosion, (3) to study and design sustainable conservation farming systems in tobacco based farming systems. This research by using a survey method, field experiments, and laboratory analysis.Data characteristics of land, farm characteristics, surface run off and erosion by using descriptive analyzed and followed by analysis of variance (F test) and 5% HSD test. The development of agrotechnology recom-mendations formulated by simulation techniques using program Powersim Version 2.5 d. The results showed that land use in tobacco-based farming systems at Progo-Hulu sub-watershed was generally (58.4%) suitable to its land capability and 41.6% were not suitable. The predicted erosion on approximately 77.2% of lands were higher than local tollerable soil loss which need improvement of soil and water conservation techniques. Tobacco based farming systems was dominated by maize-tobacco (51.0%) and chili-tobacco (29.2%) cropping patterns; farmers income on this farming systems were higher than the income that can support worthed life living standard. The application of crop residue (tobacco stems) as mulch with rate of 7 tones/ha and 14 tones/ha combined with grassed bench terraces ((Setaria spacelata) reduced erosion as much as 15–19% and 31–43%, respectively. Meanwhile, red bean-tobacco intercropping combined with crop residue mulch of 7 tones/ ha had suppressed erosion 13–20%. Sustainable tobacco-based farming systems could be developed in this area by practicing improved soil and water conservation technologies with: (a) setaria grass to strengthen terraces + 7 tones/ha of crop residue mulch or red bean and tobacco intercropping + 7 tones/ha of crop residue mulch on 8–15% slope; (b) broad base terraces + adequate slit pit on 15–30% slope; and (c) setaria grass to strengthen broadbase terraces + 14 ton/ha of crop residue mulch + adequate slit pit on >30% slope.
Analisis Kemampuan Lahan pada Sistem Pertanian di Sub-DAS Serang Daerah Tangkapan Waduk Kedung Ombo Suyana, Jaka; Muliawati, Endang Setia
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 11, No 2 (2014)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v11i2.245

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Title : Land Capability Analysis on Farming System at  Serang Sub-Watershed Kedung Ombo Reservoir Catchment Area. Soil conservation in principle is  using the land according to its capability and keep them from damage. This study aims at assessing the land capability classes of farming systems at Serang sub-watershed and evaluate their usages. The results showed that the land capability dominated by Class II (12,096.90 ha, 40.6%), followed by Class III (11,598.92 ha, 38.9%), Class IV (2,879.11 ha, 9.7%), Class I (1,333.14 ha, 4.5%), Class VIII (712.57 ha, 2.4%),  Class VII (684.97 ha, 2.3%) and Class VI (512.84 ha, 1.7%). The main resistance factors are slope and soil deepth for class II; slope,  soil deepth, drainage and erosion for class III; slope and erosion for class IV; and slope for class VIII, VII and VI. The results showed that 94% farm lands at Serang sub-watershed was suitable to its land capability and only 6.0% were not suitable.
PEMANFAATAN LIMBAH PADAT INDUSTRI KERTAS (SLUDGE) SEBAGAI BAHAN KOMPOS DALAM PENINGKATAN KESUBURAN TANAN ENTISOL Suntoro, Suntoro; Suyana, Jaka
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 1, No 1 (2001)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v1i1.92

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STUDI KERAGAAN AGROEKOSISTEM UNTUK PENGEMBANGAN POTENSI PERTANIAN DI KABUPATEN SUKOHARJO PROPINSI JAWA TENGAH Suyana, Jaka
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 5, No 2 (2008)
Publisher : Faculty of Agriculture, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v5i2.69

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The research about habitual agroecosystem to develope agriculture potential at Sukoharjo Regency in Central Java. This research conducted from June until September, 2002. The results showed that Sukoharjo Regency regional base on the Schmidt-Ferguson climate have C-climate type (slightly wet) and D (moderate), can be separate into four (4) agroecosystem, e.i wet land, dry land, mixedfarm, and forest. Wet land agroecosystem grouped into types agroecosystem with parent rock Merapi Volcano, Aluvium, Lawu ejecta, and Wonosari-Punung formation. Dry land agroecosystem grouped into types agroecosystem with parent rock Lawu ejecta, Aluvium, and Mandalika-Wonosari-Punung formation. Mixedfarm agroecosystem grouped into types agroecosystem with parent rock Lawu ejecta, and Mandalika-Wonosari-Punung formation. Whereas forest agroecosystem exist on the Wonosari-Punung formation, and it management strategy toward as community based conservation regional. Keywords : Agroecosystem, Agriculture potential, Sukoharjo Regency