59 research outputs found
Perubahan Beberapa Sifat Kimia Tanah Lahan Pasang Surut akibat Budidaya Tanaman Jagung (Zea mays L.)
No full textAuditha JV, Budianta D, Setyawan D. 2019. Changes in some chemical soil properties of tidal land due to maize cultivation (Zea mays L.). In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal 2019, Palembang 4-5 September 2019. pp. 101-110. Palembang: Unsri Press.Soil fertility of tidal land is relatively low, thus fertilizer and lime is needed to support plant nutrient needs, but tidal land planted with maize plants will produce resdies in the soil after harvest. This study aims to examine changes ins some of chemicalproperties of tidal land due to corn cultivation. This field research was conducted in Augest to Decemver 2018 on typology B tidal land ind Mulia Sari Village, Tanjung Lago District, Banyasin District.this study used a Factorial Randomized Group Design consisting of 2 factors. Factor 1 is fertilizer derived from location spesific and fertilizer from recommendation by Balitbang Pertanian Sumsel. Whereas for factor 2, namely dose of lime at the rate of 1,932 tons ha-1, at 3,864 tons ha-1, and at 5,796 tons ha-1 respectively. Each treatment was repeated 3 times to obtain 18 plots. The results of this study indicated that corn cultivation can reduce soil pH and N-total, but at the highest lime dose at the rate of 5,796 tons ha-1 can increase soil pH by 0.05 units. Maize cultivation can also increase 2.22% C-organic, P-available (13.95 mg kg-1), Cation Exchange Capacity (CEC) as much as 1.42 cmol (+) kg-1, K-dd 0 , 98 cmol (+) kg-1, Ca-dd 0.55 cmol (+) kg-1, Mg-dd 0.46 cmol(+) kg-1, while the value of Al-dd increased due to liming at 1,932 tons ha-1and 3,864 tons ha-1 but decreased by 0,36 cmol(+) kg-1 in lime at the rate of 5,796 tons ha-1. The conclusion from this study is that corn cultivation can improve some soil chemical properties.Keywords: fertilizer, lime, maize cultivatio
Effect of Organic Matter Amendment on Lead Contamination in Roadside Soil and Plant
No full textLad Contamination in Roadside Soil and Plant and Effect of Organic Matter Amendment (Sabaruddin, D Budianta and Mardia): Roadside soils and plants may be the most important sink of lead (Pb). It has been widely known that soil organic matter (SOM) plays important roles in determining concentrations of metals in soil solution and their extractability from the soil. To investigate Pb contamination in the roadside soils and plants, as well as the effect of organic matter (OM) on the soluble Pb in the roadside soils, surface soils (0 to 20 cm) were collected from a busy road. The soils were incubated for 4 weeks under room temperature after being treated with 0, 30, 60 and 90 Mg ha-1 of OM. Leaves of oil palms (Elaeis guineensis) planted on the roadside were also analyzed for Pb content. Current study revealed that Pb content in roadside soils and leaves of oil palm was 1.5 and 5.5 times higher than the safe level of Pb in soil and plant. It confirms that both soil and plant at the study site were contaminated by Pb. Current study also showed that SOM amendment significantly (P<0.01) affected soluble Pb content in the soils. Adding OM to the soil at 30 Mg ha-1 to correct the level of SOC from very low to low was sufficient to significantly reduce soluble Pb in the soils. However, the application of 60 Mg ha-1 of OM triggered the increases in soluble Pb in the soils. Further increases in OM application to 90 Mg ha-1 resulted in significant increases in soluble Pb as compared with that in the soil receiving 30 Mg ha-1 of OM. In spite of the increases, the level of soluble Pb in the soils receiving 60 and 90 Mg ha-1 of OM was still much below the safe level of Pb in soil
Changes in Some Soil Chemical Properties of Ultisol Applied by Mulch from Empty Fruit Bunches in an Oil Palm Plantation
No full textChanges in Some Soil Chemical Properties of Ultisol Applied by Mulch from Empty Fruit Bunches in an Oil Palm Plantation (D Budianta, AYA Wiralaga, and W Lestari): Objective of this research was to study the effect of empty fruit bunches (EFB) applied as mulching on some soil chemical properties of Ultisol in an Oil Palm Plantation. This field experiment was conducted in PT. Sampoerna Agro Tbk Plantation Mesuji, Ogan Komering Ilir of South Sumatra Province at blocks of 22/A, 23/B, 27/C, 33/, 12/A, 12/B, 24/D, 12/C, 00/C, 24/A, 24/B, 10/B, 02/C, 02/D, 11/C, 11/D, 10/A, 10/C, 11/A, and 24/C. The treatment was EFB dosage which are without EFB (control), 40 Mg ha-1 of EFB applied only once for a year, 80 Mg ha-1 of EFB applied twice for 2 years, 120 Mg EFB/ha applied three times for 3 years, and 160 Mg ha-1 of EFB applied four times for 4 years. The rate of EFB application was 40 Mg ha-1 per year. Every treatment was replicated 4 times, thus total of experiment was 20 units. Soil samples were taken in two differences of deepness which were 0-20 cm and 20-40 cm, respectively. Soil variables observed were soil pH, organic C, cation exchange capacity (CEC), total N, P availability, exchangeable K and Mg, Al and Fe. The results showed that application of EFB had significantly effect on some soil chemical properties such as soil pH and Mg exchangeable Mg for 0-20 cm and total N for 20-40 cm deepness. Meanwhile application of EFB did not have siginificant effects on total organic C, CEC, P-Bray I, exchangeable K, exchangeabile Al and Fe. It was also shown that some soil chemical properties were generally higher in top soil layer than sub soil layer, except for CEC, P and exchangeable Al
Fuzzy Knuth Moris pratt algorithm for knowledge management system model on knowledge heavy metal content in oil plants
No full text
Roadside soils and plants may be the most important sink of lead (Pb). It has been widelyknown that soil organic matter (SOM) plays important roles in determining concentrations of metals in soil solutionand their extractability from the soil. To investigate Pb contamination in the roadside soils and plants, as well as theeffect of organic matter (OM) on the soluble Pb in the roadside soils, surface soils (0 to 20 cm) were collected froma busy road. The soils were incubated for 4 weeks under room temperature after being treated with 0, 30, 60 and 90Mg ha-1 of OM. Leaves of oil palms (Elaeis guineensis) planted on the roadside were also analyzed for Pb content.Current study revealed that Pb content in roadside soils and leaves of oil palm was 1.5 and 5.5 times higher than thesafe level of Pb in soil and plant. It confirms that both soil and plant at the study site were contaminated by Pb.Current study also showed that SOM amendment significantly (P<0.01) affected soluble Pb content in the soils.Adding OM to the soil at 30 Mg ha-1 to correct the level of SOC from very low to low was sufficient to significantlyreduce soluble Pb in the soils. However, the application of 60 Mg ha-1 of OM triggered the increases in soluble Pb inthe soils. Further increases in OM application to 90 Mg ha-1 resulted in significant increases in soluble Pb as comparedwith that in the soil receiving 30 Mg ha-1 of OM. In spite of the increases, the level of soluble Pb in the soils receiving60 and 90 Mg ha-1 of OM was still much below the safe level of Pb in soi
Pengaruh pemberian P dan Zn terhadap ketersediaan dan serapan Zn pada pertanaman padi IR-G4 di tanah grumusol pada kondisi kelengasan yang berbeda
No full textAdsorption of Lead Content in Leachate of Sukawinatan Landfill Using Solid Waste of Tofu
No full textA study on the adsorption of lead content in the leachate from the landfill by using solid waste of tofu. This study assed the effects of weight of the solid waste of tofu and the contact time on the efficiency of the Pb adsorption. The sample used in this study was artificial sample of a solution of Pb metal ion and the sample of the leachate of the landfill waste. The study was carried out with a batch system, with the variables of weight of waste of tofu of 0.5; 1.0; 1.5 g. While the variables of the contact time were 0, 30, 60, 90, 120 and 150 minutes. To determine the optimum conditions, the waste of tofu was dissolved in 50 mL of Pb metal ion solution with a concentration of 20.27 mg/L and stirred with a shaker for 30 minutes at a speed of 180 rpm. The same thing was done by varying the contact time. When the optimum condition was obtained, it was applied with varying concentrations of Pb metal ion solution and garbage landfill leachate. The initial and the final levels of the Pb metal ion solution were analyzed by using the Atomic Adsorption Spectroscopy (AAS). The initial and the final results of the heavy metals were analyzed for disclosing the adsorption efficiency. To reveal the effects of the weight of the waste of tofu and the contact time, the data were analyzed with graphs. The waste of tofu with a weight of 1.5 g and a contact time of 90 minutes, had an adsorption efficiency of 97.68% at a concentration of 20.27 mg / L for Pb ion solution and 28.57% for the leachate from the landfill waste in 100 mL of leachate
Improvement of Sand Tailing Fertility Derived from Post Tin Mining Using Leguminous Crop Applied by Compost and Mineral Soil
No full textThe research was aimed to study the potency of two leguminous cover crops in enhancing tailing fertility of post tin mining with and without addition of mineral soil and compost. This pot experiment was carried out in Greenhouse of Soil Science Department, Faculty of Agriculture, Sriwijaya University from November 2011 until March 2012. Design experiment used was a Completly Randomized Design (CRD) factorial with two factors. The first factor was type of cover corps which were Centrosema pubescens and Pueraria javanica. The second factor was plant media composition which were 100% sand tailing, 60% sand tailing + 40% mineral soil, and 95% sand tailing + 5% compost. The result showed that N content on sand tailing after harvesting applied by compost and mineral soil was not significant by difference. Meanwhile, P content on sand tailing applied by compost was higher than mineral soil application and/or control (100% sand tailing)
ANALISIS KANDUNGAN TIMBAL (Pb) DAN KADMIUM (Cd) DALAM PEMPEK REBUSDARIBEBERAPA TEMPAT JAJANAN DIKOTA PALEMBANGSUMATERA SELATAN
No full textPenelitian ini bertujuan untuk menentukan kadar logam timbaldan kadmiumyang terdapat di dalam pempek rebus berbahan baku ikan sungai (ikan gabus) danikan laut yang dijual pedagang besar (bermerek) maupun pedagang kecil di beberapatempat jajanan di kota Palembang. Pengujian sampel pempek menggunakan metode AAS dilakukan di Laboratorium Balai Riset dan Standardisasi Nasional Palembang dimana hasilnya dikomparasi dengan baku mutu logam beratdalam ikan dan olahannya menurut BSN (SNI 7387 : 2009), yaitu logam timbal : 0,300mg/kg dan logam kadmium : 0,100mg/kg.Hasilpengujian diperoleh data kandungan logam timbal di dalam beberapa pempek rebus baikberbahan baku ikan gabus maupun ikan laut yang dijual oleh pedagang besar maupun pedagang kecil sudah melebihi baku mutu. Kadar logam timbal dalam pempek rebus ikan gabus sebesar 1,010mg/kg (kadar terendah) dan 2,910mg/kg (kadar tertinggi), sedangkan kadar logam timbal dalam pempek rebus ikan laut sebesar 1,135 mg/kg (kadar terendah) dan 3,405 mg/kg (kadar tertinggi). Sedangkan kandungan logam kadmium di dalam pempek rebus baik berbahan baku ikan gabus maupun ikan laut tidak terdeteksi
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