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All Journal Agrotrop : Journal on Agriculture Science SOCA: Jurnal Sosial Ekonomi Pertanian AGRITROP Jurnal Kimia (Journal of Chemistry) International Journal of Biosciences and Biotechnology Jurnal Agribisnis dan Agrowisata (Journal of Agribusiness and Agritourism) E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Agro Bali: Agricultural Journal INTERNATIONAL JOURNAL OF ENVIRONMENT AND GEOSCIENCES Evolusi: Journal of Mathematics and Natural Sciences Nandur Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian
I Made Mega
Program Studi Agroekoteknologi Fakultas Pertanian Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Mathematics Social Sciences Other

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Pengaruh Pemupukan Berimbang Spesifik terhadap Pertumbuhan Tanaman Gaharu (Gyrinops versteegii) dan Perubahan Beberapa Sifat Kimia Tanah A.A. NYOMAN SUPADMA; I MADE DANA; I MADE MEGA
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.64 KB) | DOI: 10.24843/AJoAS.2018.v08.i02.p08

Abstract

Effect of Fertilizer (Organic + Inorganic + Dolomite) Combination to Improve of Growth Gaharu Plant (Gyrinops versteegii) and Characteristic of Soil Chemistry. This study aims to find combinations of fertilizer (organic + inorganic + dolomite) to promote the growth of gaharu plant and chemical properties of soil. This research was conducted in Tabanan Regency. The study was a randomized block design (RBD) with 7 treatments, each treatment was repeated three times to obtain 21 gaharu plants as a crop sample. The fertilizer formulations were tested as treatments as follows: A = without fertilizer (control), B = (50 g urea + 50 kg SP-36 + 50 kg KCl + 10 kg compost) + 50 g Dolomite) per tree, C = (100 g urea + 100 g SP-36 +100 g KCl + 7.5 kg compost + 75 g Dolomite) per tree, D = (150 g urea +150 g SP-36 + 150 g KCl + 5 kg compost + 75 g Dolomite) per tree, E = (200 g urea + 200 g SP-36 + 200 g KCl + 2.5 kg of compost + 100 g Dolomite) per tree, F = (200 g urea + 150 g SP -36 + 150 g KCl + 7.5 kg of compost + 100 g Dolomite) per tree, G = (200 g urea + 100 g SP-36 + 100 g KCl + 7.5 kg of compost + 75 g Dolomite) per tree. Parameters measured were plant height, girth of plants, and chemical properties of the soil. Analysis of data using analysis of variance and Duncan test (0.05). The results showed that fertilization treatments significantly affected plant height, but not significant to girth of plant. The best fertilizer combinations was the treatment of C, which were increase plant height (26,35 cm), pH (6,7), total N (0,28 %) and other chemical properties of soil.
LAND MANAGEMENT FOR SUSTAINABLE AGRICULTURE IN NORTH COASTAL PLAIN OF BALI 1 I WAYAN BUDIASA; MADE MEGA
SOCA: Jurnal Sosial Ekonomi Pertanian Vol. 7, No. 1 February 2007
Publisher : Program Studi Agribisnis, Fakultas Pertanian, Universitas Udayana Jalan PB.Sudirman Denpasar, Bali, Indonesia. Telp: (0361) 223544 Email: soca@unud.ac.id

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Abstract

ABSTRAK Sistem pertanaman intensif bisa mengarah pada trade-off antara manfaat ekonomi dalam jangka pendek dan kerusakan lingkungan seperti degradasi kesuburan tanah dalam jangka panjang. Oleh karena itu, pengelolaan lahan sebagai salah satu komponen pengelolaan teknologi pertanian diperlukan dalam sistem pertanian berkelanjutan. Penelitian di TMB-59, Desa Tembok, daerah pesisir Bali bagian utara dilakukan secara purposif dengan pertimbangan bahwa petani di TMB-59 menyelenggarakan sistem usahatani campuran berbasiskan irigasi air tanah. Analisis difokuskan pada kesesuaian lahan, kesuburan tanah, pendugaan erosi dan pengelolaan nutrisi tanah. Temuan penelitian ini adalah: (1) status kesuburan lahan usahatani di TMB-59 tergolong rendah sehingga hanya memiliki kesesuaian marginal untuk tanaman jagung, ubi kayu, kacang tanah, ubi jalar, melon, cabai, pisang, jambu mete, kelapa, dan lontar, serta cukup sesuai untuk tanaman mangga, pepaya, dan rumput sebagai pakan ternak; (2) Tingkat erosi tanah di TMB-59 tergolong sangat ringan dan jauh lebih kecil daripada tingkat erosi yang diperbolehkan sehingga tidak diperlukan tindakan konservasi di daerah tersebut; dan (3) kebutuhan pupuk kandang untuk berbagai tanaman di TMB-59 sekitar 342 ton per tahun tetapi baru tersedia sekitar 202,74 ton dari populasi sapi, babi, kambing dan ayam di daerah tersebut. Berdasarkan temuan tersebut, direkomendasikan bahwa (1) perlu penambahan bahan organik yang cukup untuk meningkatkan status kesuburan tanah dan produktivitas lahan, (2) walaupun tidak perlu tindakan konservasi, pemeliharaan tanah diperlukan untuk mengantisipasi erosi tanah yang lebih tinggi, dan (3) petani di TMB-59 disarankan tetap melaksanakan usahatani campuran dengan meningkatkan jumlah ternak untuk memenuhi kebutuhan pupuk kandang yang lebih tinggi dari berbagai jenis tanaman yang diusahakan. Kata kunci: Kesesuaian Lahan, Kesuburan Tanah, Erosi, dan Pertanian Beranjutan ABSTRACT Intensive cropping system with their technology such as the one in the project area will lead to trade-off between economic benefits in the short run and environmental damages, especially soil fertility degradation in the long run. As environmental degradation increases, agriculture will eventually become unsustainable; therefore, land management as a component of agricultural technology management is required in sustainable agricultural system. A research in TMB-59, Tembok village, north coastal plain of Bali, is conducted purposively with a reason that farmers in which have done groundwater irrigation-based mixed farming system. The analysis is focused on the land suitability, soil fertility, soil loss prediction, soil nutrient management. The research finding is: (1) the farmland in TMB-59 is actually classifiable as poor fertile soil, its only marginal suitable for for maize, cassava, groundnuts, sweet potato, melon, chili, banana, cashew, cacao, coconut, and Palmyra palm and suitable enough for mango, papaya, and fodder grasses; (2) the soil erosion level in TMB-59 is categorized as very light and less than soil loss tolerance in the area; (3) crops animal- manure requirement is approximately 342 tons per year but the available stock is only 202.74 tons generated by cattle, pig, goat and chicken. Therefore, it can be recommended that: (1) it needs organic matter application in middle to high levels to improve the soil fertility status and land productivity; (2) it needs land maintaining such as addition of organic matter to protect soil against erosion to some extent; and (3) the farmers in TMB-59 should continuously carry out mixed-farming practices and increase livestock population based on the crop manure requirement and greenery and crops by-product availability. Key words: Land Suitability, Soil Fertility, Erosion, and Sustainable Agriculture.
Pengaruh Pupuk Organik Dan Anorganik Terhadap Sifat Kimia Tanah Dan Pertumbuhan Tanaman Pisang Di Lahan Kering I Made Mega; I Nyoman Puja
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 2 No 1 (2018): April 2018
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

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Abstract

This aims of study was to determine the effect of organic and inorganic fertilizers on soil chemical properties and the growth of banana plants on dry land. This research is a factorial experiment with Randomized Block Design (RAK), and three replications. The first factor is the dosage of organic fertilizer that is: B0 (0 kg / plant); B1 (10 kg / plant); B2 (20 kg / plant); while the second treatment is the dose of inorganic fertilizer (NPK) that is: P0 (0 kg / plant); P1 (1 kg / plant); P2 (2 kg / plant). The statistical analysis showed that the treatment of organic and inorganic fertilizer doses did not significantly affect all observed parameters, but in the treatment of organic fertilizers dosage there was an increasing tendency towards: plant height, leaf chlorophyll content, P-available in soil, K-available in soil, and the soil c-organic content, but not significantly different to N-total in soil and number of leaves per plant. The largest plant height was obtained on B1P0 (96.87 cm) treatment, leaf chlorophyll content at B2P2 (72.55 units), P-available in soil at B1P2 treatment (601,12 ppm); K-available in soil at B2P1 treatment (237,67 ppm); and soil Corganic content at B2P0 treatment (4.86%)
Kandungan Minyak Esensial Sebagai Bahan Baku Obat-Obatan dari Tanaman Gaharu (Gyrinops versteegii) pada Kondisi Lahan Berbeda I MADE ADNYANA; I MADE MEGA; I GUSTI PUTU RATNA ADI
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p03

Abstract

Content of Essential Oils as Raw Materials for Medicine from Agarwood Plants (Gyrinops versteegii) in Various Soil Conditions. Essential oil is one of the processed agarwood (Gyrinops versteegii) which is useful in the basic ingredients of perfume, cosmetics, and medicines. The purpose of this study was to determine the volume and chemical composition of essential oils in agarwood plants in different land conditions. This research was conducted through a hydrodestillation process and chemical component analysis using a Gas Chromatography Mass Spectrophotometer (GCMS). The materials used are samples of agarwood from different lands, namely: A (agarwood on land with Regosol in Klungkung Regency) and B (agarwood on land with Latosol in Tabanan Regency). The specimens of agarwood consisted of: (1) Sapwood, (2) Kemedangan. The results showed that the essential oil content of the sapwood and kemedangan agarwood from Tabanan was higher than that of the sap and kemedangan agarwood from Klungkung. The composition of the compounds contained in sapwood includes: 9-Octadecenoic acid, Trans-13-Octadecenoic acid, Eugenol, 1-Nonadecene, Propanedioic acid, phenyl-; 2-propanol, 1,1'-oxybis-; 1-Propanol, 2- (2-hydroxypropoxy); Cyclopentadecanone, 2-hydroxy-and Oleic acid.
Effect of Fungal Inoculation to Resin Content on Gaharu Plants (Gyrinops Versteegii (Gilg.) Domke) I Made Mega; I Wayan Nuarsa
International Journal of Environment and Geosciences Vol 3 No 1 (2019)
Publisher : Graduate Study of Environmental Sciences, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ijeg.2019.v03.i01.p02

Abstract

One of the commodities of non-timber forest products (NTFPs) is agarwood sapwood which has high economic value as an export commodity, as well as a good source of income for the community. Agarwood sapwood is an aromatic substance in the form of a lump that is found between wood cells in a variety of distinctive shapes and colors and has a resin content (mastic). Resin is a secondary metabolite compound produced by agarwood plants due to injury or infection by microbes. One of the microbes that infects the agarwood plant is a variety of fungi. This study aims to obtain a type of fungi that is effective in the formation of resin compounds in agarwood plants. This research is a field experiment with randomized block design. The treatments that experimented were mushroom inoculation, namely: J0 (without fungal inoculation), JF (Fusarium solani mushroom inoculation), JR (inoculation of Rhisopus sp), JT (inoculation of Trichoderma sp). Each treatment was repeated 4 times. Parameters observed were: sap color, sap smell, infection width and length, and resin content in sapwood (%). Data were analyzed statistically by variance test (ANOVA). If the treatment has a significant effect, followed by a BNT test at the level of 5%. The results showed that the treatment of fungi inoculation significantly affected the width of the infection and the sap content of sapwood, while the other parameters had no significant effect. The best treatment was obtained in JT (inoculation of mushroom Trichoderma sp.) with the results in the form of sap with: the color of the sap ranged from brown to blackish brown; fragrant aroma, infection length (2.39 cm) and infection width (1.11 cm), and resin content of 7.92%.
Evaluasi Kesesuaian Lahan Tanaman Pangan dan Perkebunan di Desa Belimbing, Kecamatan Pupuan, Kabupaten Tabanan Febrin Sidabutar; I Gusti Putu Ratna Adi; I Made Mega
Nandur Vol 1 No 1 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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Abstract

This study aims to determine the actual and potential land suitability, limiting factors, improvement efforts and the making of suitability maps as well as land use directions for several food crops and plantations. The plants evaluated include: rice, corn, sugar palm, coffee, salak and coconut. This research was carried out in Belimbing Village starting from January 2021 to March 2021. Based on the results of overlapping soil type maps, slope maps and land use maps, four homogeneous land units were obtained. The method used is a survey, analysis and classification of land suitability by matching the quality and characteristics of the land with the requirements for plant growth that are evaluated for suitability. The evaluation results show that the actual land suitability class for several food crops and plantations is S3 (marginally suitable) to N (not suitable). The limiting factors in the study area are: temperature, rainfall, dry months, humidity, N-total, P2O5, available K, slope and erosion hazard. Improvement of land suitability class is carried out with improvement efforts, namely the provision of organic matter, fertilization, making planting terraces according to contours and land cover except temperature, rainfall (especially for plantation crops), dry months and humidity because they are permanent limiting factors. Potential land suitability classes for several food crops and plantations evaluated are S1 (very suitable) to S3 (marginally suitable), with limiting factors of temperature, rainfall, slope and erosion hazard. Recommendations for land use in BLIVSw and BLVSw are corn and BLIVKb and BLVKb are sugar palm and coconut.
Evaluasi Kesesuaian Lahan Tanaman Palawija pada Lahan Kering di Kecamatan Gerokgak Mei Esra Lestari; Made Sri Sumarniasih; I Made Mega
Nandur Vol 1 No 4 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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Abstract

This research aims to determine the land suitability class for secondary crops, limiting factors, improvement efforts and making land use maps. The crops evaluated included peanuts, sorghum, soybeans, corn. The research location was carried out in Gerokgak District, Buleleng Regency, Bali Province from December 2020 to February 2021. Based on the results of slope maps, soil type maps, and overlapping land use maps, 9 homogeneous lands were obtained. The research method used a survey method for land characteristics and for soil sampling, then soil analysis was carried out in the laboratory. The suitability of the land is carried out to the sub-class level, by comparing the characteristics of the assessment land with the conditions for growing existing plants. The results showed that the actual land suitability classes for maize, sorghum, soybeans, and legumes were S3 (Marginal Suitability) to N (Not Suitability); In SLH6, SLH 8, SLH 9 for maize, sorghum, soybeans, and peanuts are classified as N (Not Suitability) while in SLH 1, SLH 2, SLH 3 , SLH 4, SLH 5, SLH 7 belong to S3. General directions for land use that can be taken to increase land productivity in the research area are terracing, garden sanitation, fertilization using urea fertilizer and SP36.
Evaluasi Status Kesuburan Tanah Sawah Berbasis Sistem Informasi Geografis di Kecamatan Negara Kabupaten Jembrana PEDRO BARUS; I DEWA MADE ARTHAGAMA; I MADE MEGA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.11, No.3, Juli 2022
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Evaluation of Rice Field Fertility Status Based on Geographical Information System in Negara District, Jembrana Regency Lowland rice production at Negara District in 2014 was 6.89 tons/ha and in 2015 decreased to 6.67 tons/ha. This is thought to be due to the reduced ability of the land to support the agricultural production process. The purpose of this study was to determine the status of soil fertility and the parameters of the limiting factors of soil fertility, to make a map of the status of soil fertility, and to provide direction for the management of soil fertility. This research was conducted from December 2021 – March 2022. The methods used in this study included survey and soil test methods with parameters of fertility status including: CEC; BS; organic C; total P and total K. The results showed two soil fertility statuses in the study area, namely low in HLU I (Pengembengan Village, West Tegal Badeng, East Badeng Tegal, Baluk, Banyubiru, Kaliakah, Lelateng, Bale Agung Baler) and HLU II (Pengambengan Village, East Tegal Badeng, Banyubiru, Lelateng) and moderate soil fertility in HLU III (Kaliakah Village, Berangbang, Bale Agung Baler) and HLU IV (Kaliakah Village, Berangbang, Bale Agung Village). The limiting factors for soil fertility status were CEC and moderate K2O content and low organic C content. The direction of soil fertility management is the addition of organic matter and K fertilizer to improve soil fertility status.
Evaluasi Kesesuaian Lahan Beberapa Tanaman Pangan pada Lahan Sawah Berbasis Sistem Informasi Geografis di Kecamatan Baturiti DJIAN NILAM SARI; NI MADE TRIGUNASIH; I MADE MEGA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.11, No.3, Juli 2022
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Land Suitability Evaluation of Several Food Crops on Rice Fields Based on Geographic Information System in Baturiti Sub-District The need for land will continue to increase along with the growth of the population which increases every year. The results of the land evaluation will provide information and/or directions for land use as needed. This study aims to determine the level of land suitability for the development of food crops, the limiting factors that become obstacles and efforts to improve it, and determine the direction of land use according to its potential. The research was conducted in Baturiti Sub-District. This research used survey methods and soil sample analysis in the laboratory. The land suitability classification method is carried out by matching. The results showed that the actual land suitability for food crops in Baturiti Sub-District was classified as S1 (very suitable) to S3 (marginally suitable), with the limiting factors of temperature, rainfall, and nutrient avaibility (N-Total and P2O5). Improvements that can be made to the limiting factors include making drainage channels, fertilizing with organic fertilizers and containing N and P elements, so that the potential land suitability classified as S1 (very suitable) to S2 (moderate suitable) with a temperature limiting factor. Land use directions for food crops commodities in Baturiti Sub-District are paddy, corn, and soybean.
Evaluasi Status Kesuburan Tanah Sawah Berbasis Sistem Informasi Geografis di Kecamatan Negara Kabupaten Jembrana PEDRO BARUS; I DEWA MADE ARTHAGAMA; I MADE MEGA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.11, No.4, Oktober 2022
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Evaluation of Rice Field Fertility Status Based on Geographical Information System in Negara District, Jembrana Regency Lowland rice production at Negara District in 2014 was 6.89 tons/ha and in 2015 decreased to 6.67 tons/ha. This is thought to be due to the reduced ability of the land to support the agricultural production process. The purpose of this study was to determine the status of soil fertility and the parameters of the limiting factors of soil fertility, to make a map of the status of soil fertility, and to provide direction for the management of soil fertility. This research was conducted from December 2021 – March 2022. The methods used in this study included survey and soil test methods with parameters of fertility status including CEC; BS; organic C; total P and total K. The results showed two soil fertility statuses in the study area, namely low in HLU I (Pengembengan Village, West Tegal Badeng, East Badeng Tegal, Baluk, Banyubiru, Kaliakah, Lelateng, Bale Agung Baler) and HLU II (Pengambengan Village, East Tegal Badeng, Banyubiru, Lelateng) and moderate soil fertility in HLU III (Kaliakah Village, Berangbang, Bale Agung Baler) and HLU IV (Kaliakah Village, Berangbang, Bale Agung Village). The limiting factors for soil fertility status were CEC and moderate K2O content and low organic C content. The direction of soil fertility management is the addition of organic matter and K fertilizer to improve soil fertility status.
Co-Authors A.A.NYOMAN SUPADMA Apriadi, Putu Agung Artanaya, I Wayan D.N. KASNIARI Dewa Ayu Swastini Dewa Ketut Suanda DEWA KETUT SUANDA DJIAN NILAM SARI Febrin Sidabutar GUSTI AGUNG AYU RATIH SARIDEVI I DEWA MADE ARTHAGAMA I Gede Ketut Susrama I GEDE SURANJAYA I GUSTI AGUNG AYU AMBARAWATI I GUSTI PUTU RATNA ADI I Ketut Mangku Budiasa I Ketut Sardiana I MADE ADNYANA I MADE DANA I MADE DANA I Made Oka Adi Parwata I Nengah Netera Subadiyasa I Nyoman Dibia I Nyoman Puja I NYOMAN SUNARTA I WAYAN BUDIASA I Wayan Dana Atmaja I WAYAN NARKA I Wayan Nuarsa IDA AYU SRI MAS ARY SUSANTHI IDA AYU SUTYADNYANI IDA BAGUS PUTU BHAYUNAGIRI Ketut Dharma Susila MADE SRI SUMARNIASIH Mei Esra Lestari Ni Luh Kartini NI MADE TRIGUNASIH PEDRO BARUS PUTU CANDRA LINDARI Putu Perdana Kusuma Wiguna RADEGUNDA AGUSTA JINOTRI REZA ADELIA Sianturi, Harrixon Sangputra SUMARNIASIH, MADE SRI SUTAN TANTOWI DERMAWAN Tati Budi Kusmiyarti TRISNA AGUNG PHABIOLA WAYAN SUENA