Claim Missing Document
Check
Articles

Found 19 Documents
Search

PENGARUH CEKAMAN KEKERINGANPADA PERTUMBUHAN DAN HASIL BEBERAPA VARIETAS KEDELAI (Glycine max L Merr) LOKAL ONGKO CAHYONO
JURNAL ILMIAH AGRINECA Vol. 19 No. 1 (2019): JURNAL ILMIAH AGRINECA
Publisher : Fakultas Pertanian, Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (680.01 KB) | DOI: 10.36728/afp.v19i1.828

Abstract

The study aimed to assess the response of four varieties of soybean (Argomulyo, Grobogan, Local Wonogiri dan Local Karanganyar) grown in different soil water content (100%, 70% and 40% of the field capacity). This pot experiment was done in the green house in Sumber Banjarsari Surakarta (at about 98 metres above sea level), using Factorial Experimental Design. The research consluded that soil water content as low as 70% and 40% of field capacity restrain plant growth and seed yield of all soybean varieties. This was indicated by the reduction of plant height, dry weight of  leaf, dry weight of root, dry weight of root and shoot and seed yield.  Water stress decreased significantly rhe vegetative growth of Argomulyo dan Grobogan varieties, but decreased significantly seed yield of bth local Wonogiri and Karangayar varieties. The varieties of Argomulyo and Grobogan are more drought tolerant compared to the local varieties of  Wonogiri and Karanganyar.
Exchangeable Al, peanut growth, and nodulation on Ultisol Bogor as affected by ameliorant proportion of lime and organic matter Cahyani, Vita Ratri; Firmansyah, Mohammad Iqbal; Cahyono, Ongko; Widijanto, Hery
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5429

Abstract

Ultisols are characterized as acid soils with high exchangeable Al as the primary constraint for plant growth. This study aimed to investigate the effect of the proportion of lime and organic matter in decreasing exchangeable Al on Ultisol Bogor and continued to observe the impact on the growth and nodulation of peanuts. The pot experiment used a completely randomized design with a single treatment of the addition of ameliorant consisting of 12 levels of the treatment of lime (calcite and dolomite), organic matter (dry cow dung and rice straw compost), and their combinations with three replications. The first step was applying the ameliorant and incubating for eight weeks, then continuing the cultivation of peanuts. Results showed that during incubation, the decrease in exchangeable Al levels varied between treatments, along with an increase in soil pH and available P. The treatments of calcite 100% (T1) and dolomite 100% (T2) showed the highest increase in soil pH and available P and the highest decrease in exchangeable Al. The result of plant growth showed that the highest plant dry weight, N-uptake, and P-uptake were obtained by the treatment of dolomite 25% + rice straw compost 25% + dry cow dung 25% + NPK 25% (T10), whereas the highest number and total weight of nodules were obtained by the rice straw compost 50% + dry cow dung 50% (T7) and dolomite 25% + rice straw compost 75% (T8).  
Analysis of Alfisol Soil Infiltration Rate on Various Land Cover and Its Effect on Soil Erodibility in Mount Bromo Special Purpose Forest Area, Indonesia Maro'ah, Siti; Cahyono, Ongko; Ariyanto, Dwi Priyo; Pramudita, Tesalonika
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.993

Abstract

Plant canopies can protect the soil surface from raindrops and rooting activities that cause changes in biophysical properties. A low infiltration rate will reduce the soil’s capacity to store water to be low, resulting in a high soil erodibility value. This research aims to obtain infiltration values on different land cover, analyze the effect of land cover on soil infiltration rate, and analyze the effect of soil infiltration rate on soil erodibility. The research includes exploratory, descriptive research with a purposive sampling method. The study results show an increased soil infiltration rate can reduce soil erodibility. The infiltration rate of 74-year-old mahogany land cover ranged from 1.94–3.03 cm/hour, 50-year-old mahogany 1.61 cm/hour, old pine 1.53–1.89 cm/hour, old tapped pine 1.54–3.43 cm/hour, young pine 0.48–1.60 cm/hour, young pine 0.37–0.61 cm/hour, and 5-year-old sonokelling 0.56–0.73 cm/hour. The highest infiltration value is in 74-year-old mahogany and the lowest in young pine. The highest soil erodibility value is in young tapped pine and the lowest in 50-year-old mahogany. Erodibility is the sensitivity of soil to erosion. It is easier to erode if its erodibility value is higher; conversely, erosion is less likely to occur if its erodibility value is lower. An increase in soil infiltration rate can reduce soil erodibility. Keywords: Horton method, land cover, Mount Bromo, soil erodibility, soil infiltration rate
Landslides Hazard Assessment Using Soil Physics Approaches as a Determinant Factor on Agricultural Land in Hilly Area Mujiyo, Mujiyo; Tiara Meti Pratingkas; Ongko Cahyono; Dwi Priyo Ariyanto
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 14 No 3 (2024): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.14.3.566

Abstract

Landslides are natural disasters that most often occur in hilly areas, one of which is in the Manyaran District, and are caused by land use, slope, and rainfall. This study aimed to assess the level of landslides on several slopes and determine the soil characteristics that most determine the level of landslide vulnerability to formulate an appropriate strategy for hilly land management. The sampling points used land map units (LMU) overlaid on thematic maps (land use, soil type, and slope), and were divided into 22 LMUs with three repeats for each LMU. The landslide level was calculated using a cumulative weight score. It was grouped based on the interval formula and modifications to the addition of permeability and soil texture parameters, while the determinants were analyzed using ANOVA and Pearson’s correlation. The results showed that the area was not very low (133.2 ha), low (1,015.33 ha), moderate (1,205.46 ha), high (3,248.48 ha), or very high(734.1 ha). The highest landslide hazard was on steep land (25–45%), and the determining factors were permeability and texture. The steeper the slope and the higher the permeability and soil texture values, the higher the landslide. The recommended landslide mitigation strategies are terracing and minimum tillage on agricultural land. Research on the level of landslides and information on determinant soil characteristics helps stakeholders formulate policies and manage agricultural land on hilly agricultural land.
IMPROVEMENT OF PHOSPHATE FERTILIZATION METHOD IN WETLAND RICE Cahyono, Ongko; Hartati, Sri
AGRIVITA Journal of Agricultural Science Vol 35, No 1 (2013)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v35i1.114

Abstract

The low efficiency of Phosphate fertilization on wetland rice may be overcame by using quickly dissolve P fertilizer. However, for soils containing high dissolve Fe, such as Alfisol and Oxisol, will induce the formation of Fe-P bonding. Therefore, to use the quickly dissolve P fertilizer  in such soils should be done by split application. The research aimed to assess better P fertilization method for wetland rice which used quickly dissolve P fertilizer given in split application. The research concluded that the application of quickly dissolve P fertilizer to Alfisol and Oxisol which was applied in split application by twice (0 and 30 days after planting) and three times (0, 15 and 30 days after planting) increased the eficiency of P fertilization in wetland rice.  The split application of 75 kgs perhectare (one half of recommended dose) in Alfisol yielded dry seed as high as 6,374 kgs per hectare (at the twice application), 6,280 kgs per hectare (the three times application)c while the control treatment yielded as high as 6,027 kgs per hectare.  In Oxisol the yield of rice was 8,200 kgs per hectare fo the control treatment, 8,027 kgs per hectare for the twice application and 8,440 kgs per hectare for the three time applications.
Impact of Moringa Leaf Liquid Fertilizer on P Uptake and Grain Yield of Organic Rice in Inceptisols Dewi, Widyatmani Sih; Loveana, Okta; Rahmawati, Rani; Sudadi, Sudadi; Purwanto, Purwanto; Rachmawatie, Srie Juli; Cahyono, Ongko
AGRIVITA Journal of Agricultural Science Vol 46, No 2 (2024)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v46i2.4067

Abstract

In an effort to solve the P availability issue in Inceptisols, fermentation is one method used to enhance the quality of liqiuid organic fertilizer (LOF) made from Moringa (Moringa oleifera). The type and concentration determine the effectiveness of LOF on nutrient uptake and plant yields. This study aims to evaluate the impact of LOF types, concentrations, and their interactions on P uptake and rice grain yield in Inceptisols. The research was conducted in a greenhouse using a completely random design (CRD) with two factors. The first factor is the type of LOF, consisting of two levels, i.e., fresh and fermented Moringa extract. The second factor is the LOF concentration, with four levels (i.e., 0, 20, 40, 60, and 80 ml/l) and three replications. Data analysis using ANOVA, DMRT, and correlation. The study revealed that the interaction between LOF types and concentrations affects P uptake. The highest P uptake shown by fermented Moringa with a concentration of 60 ml/l was 20.02 mg/plant and 40 ml/l was 18.73 mg/plants., or 1.5 times higher than the control. Grain yield was not affected by type, LOF concentration, or interaction. Fermented Moringa has good potential as LOF, while the effect on grain yield needs further research.
Mapping of Land Suitability for Growing Tobacco (Nicotiana tabacum L.) Under Various Slope Using Geographic Information Systems Mujiyo, Mujiyo; Irawaningsih, Daradinda Surya; Minardi, Slamet; Cahyono, Ongko
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 2 (2024): June 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i2.572-580

Abstract

The study aims to identify the classes and the determinant factors of land suitability of Tobacco in order to provide recommendations for land management as an effort in increasing the development of Tobacco in Eromoko District, Wonogiri Regency, Indonesia. This research used a descriptive-exploratory approach by field surveys, laboratory analysis, and matching the data with growth requirement characteristics for Tobacco crops. The field survey was carried out based on a working map, namely the Land Mapping Unit (LMU), overlaid maps of soil type, slope, and rainfall. Research results illustrated that 18 LMUs were included in the marginally suitable class (S3) (4,968.78 ha, about 51% of research area) with limiting factors wa; oa; nr; na; eh, and 8 LMUs were included in the unsuitable class (N) (4,919.11 ha, about 49% of research area) with limiting factors N and eh. This study provide information about the land suitability class and the limiting factors each area to determine the potential success of Tobacco cultivation and make suitable improvement efforts. Keywords: Hilly land, Land management, Limiting factors, Sustainable agriculture, Tobacco growth potential.
Potential Drought of Agricultural Land Due to Soil Damage Based on Land Mapping Unit Maroah, Siti; Mujiyo, Mujiyo; Cahyono, Ongko; Romadhon, Muhammad Rizky; Irmawati, Viviana; Istiqomah, Nanda Mei
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.1051-1060

Abstract

Sediment deposition in the upstream river areas can cause drought and disrupt agricultural activities. This study aims to analyze the potential for drought in the Keduang Sub Watershed based on the Land Map Unit. The Keduang Sub-Watershed area has high potential for the development of agricultural land for food crops, but is not free from the potential for drought. The study was conducted using a soil survey method that was strengthened by soil sampling and laboratory analysis. Parameters for determining soil damage that causes the potential for land drought include soil physical properties, namely specific gravity, structure, soil color, porosity, permeability, slope, and soil type. The results showed that the potential for drought at the research location was still high. This is influenced by the level of soil damage that varies from low, medium to high. Land drought can be an obstacle to agricultural activities, and improper land management can worsen the situation. Conservative actions to overcome this problem include the addition of organic matter, crop rotation, application of soil cover or mulch, and processing agricultural land according to the contour direction. These activities are expected to overcome soil damage so that the potential for drought can be overcome. Keywords: Conservation activities, Land drought, Physic soil properties, Soil damage.
Termites as Soil Engineers: A Study on Organic Carbon and Nutrient Dynamics using Baiting Techniques in Tropical Forest Ecosystem Febriani, Sri Rezeki; Ariyanto, Dwi Priyo; Cahyono, Ongko; Tarmadi, Didi; Wikantyoso, Bramantyo; Himmi, Setiawan Khoirul; Zaki, Muhamad Khoiru
HAYATI Journal of Biosciences Vol. 33 No. 2 (2026): March 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.2.394-403

Abstract

This study explores how termite activity affects soil chemistry, those are Soil Organic Matter (SOC) and nutrient dynamics in pine and mahagony forest of varying ages in the Bromo Forest, Indonesia. Termite activity was assessed using wooden poles placed in PVC pipes as bait, which also served for soil sampling. The results showed significant differences in SOC and total NPK levels among different pole damage classes in each forest. The highest values were observed in pole damage class 4. Termite-influenced soil, especially those affected by the genera Macrotermes sp., Microtermes sp., and Schedorhinotermes sp., showed the highest concentrations of SOC and NPK (4.97%, 0.51%, 15.42 mg/100 g, and 45.9 mg/100 g, respectively). The termite diversity index showed moderate diversity in all pine forests and low diversity in mahogany forests. The termite diversity index indicated moderate diversity in pine forests and low diversity in mahogany forests, likely influenced by bait type. These results demonstrate that termite activity significantly enhances soil nutrient content and can be used as an indicator of soil fertility status in tropical forest ecosystems.