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Journal : Agrikultura

Role of Nitrogen Fertilizer on Cadmium Uptake by Ramie (Boehmeria nivea (L.) Gaudich) Grown on Cadmium Contaminated Soil Reginawanti Hindersah; Anne Nurbaity; Dedi Nursyamsi
Agrikultura Vol 26, No 1 (2015): April, 2015
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.23 KB) | DOI: 10.24198/agrikultura.v26i1.8460

Abstract

ABSTRACTContinues phosphate fertilization as well as organic matter amendment can increase cadmium concentrationin soil and induce more cadmium uptake by plants. Pytoremediation using non edible plant such as ramie(Boehmeria nivea L. Goud) is cheap and effective method to extract Cd from Cd-contaminated soil. Since inplant tissue Cd is bound in phytochelatin peptide which contains nitrogen and sulphur, the objective of thisgreen house experiment was to assess the influence of nitrogen fertilizer in form of urea on cadmiumuptake, nitrogen and sulphur concentration in shoots as well as shoot dry weight of 60-day old ramiegrown in cadmium-contaminated soil. The experiment was set up in a Split Plot Design with two treatmentsand three replications. The main plot was cadmium levels (0, 10 and 15 mg kg-1) and subplot was urea level(0, 5.0 and 7.5 g pot-1). The result showed that the increase of cadmium concentration in soil enhanced itsconcentration in ramie shoot regardless of urea levels. However either cadmium or urea did not changesulphur concentration in ramie shoot. Urea of 7,5 g/pot increased shoot dry weight but adding CdCl2.H2O of15 mg/kg did not change shoot dry weight. This experiment demonstrated that ramie was able to grow inrelatively high level of soil cadmium, and higher cadmium uptake by ramie shoot was not followed by anincrease in nitrogen as well as sulphur uptake.Keywords: Cadmium, Urea, Nitrogen, Sulphur, Ramie.
Peningkatan Kualitas Tanah Bekas Tambang Pasir Melalui Penambahan Amelioran Biologis Anne Nurbaity; Anni Yuniarti; Sungkono Sungkono
Agrikultura Vol 28, No 1 (2017): April, 2017
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (338.885 KB) | DOI: 10.24198/agrikultura.v28i1.12295

Abstract

ABSTRACTImproving soil quality from sand mining area by application of biological ameliorantsSoil from disturbed mine sites render to be unfertile and have poor characteristics. One of the solutions to improve the soil and to rehabilitate the ecosystem is through application of biological amendments such as organic matter, soil microbes, and plant which known to be adaptive such as dragon fruit (Hylocereus costaricensis). This study was aimed at understanding the effects of arbuscular mycorrhizal (AM) fungi and organic matter on soil C-organic, soil N-total, soil C/N, and length of bud of dragon fruits grown on soil originated from sand mining, Sumedang, Indonesia under greenhouse condition. Different types of organic matter i.e. chicken manure, goat manure, cow manure and rabbit manure were applied. Results of experiment showed that application of manures and AMF was significantly improved soil C-organic content, N-total, and C/N, as well as length of bud of dragon fruit plants. Planting soil from sand mine sites with dragon fruit combined with organic matter and mycorrhiza has potential as restoration tools on ecosystem of sand-mining areas.Keywords: Sand-mine, Mycorrhiza, Manure, Dragon fruitABSTRAKTanah pada lahan bekas tambang galian pasir memiliki tingkat kesuburan yang rendah. Salah satu upaya untuk meningkatkan kualitas tanah dan ekosistem di wilayah penambangan pasir adalah melalui aplikasi amelioran biologis berupa bahan organik, mikroba tanah, dan tanaman yang dikenal adaptif terhadap lahan berpasir, seperti buah naga (Hylocereus costaricensis). Tujuan dari penelitian ini adalah untuk mengetahui efek pemberian berbagai jenis pupuk kandang (PK: berasal dari kotoran ayam, kambing, sapi, dan kelinci) dan fungi mikoriza arbuskula (FMA) terhadap kandungan C-organik, N-total, C/N tanah dan panjang tunas bibit buah naga super merah yang ditanam pada tanah bekas tambang pasir asal Sumedang, Indonesia pada kondisi rumah kaca. Hasil percobaan menunjukkan bahwa pemberikan pupuk kandang dan mikoriza meningkatkan kandungan C-organik, N-total, C/N tanah dan panjang tunas bibit buah naga super merah secara nyata. Kombinasi PK sapi dengan FMA atau PK kelinci tanpa FMA menghasilkan tunas bibit buah naga terbaik. Penanaman buah naga di lahan bekas tambang pasir yang dikombinasikan dengan pupuk kandang dan mikroba tanah seperti fungi mikoriza memiliki potensi sebagai sarana untuk restorasi ekosistem di wilayah penambangan pasir.Kata kunci: Tambang pasir galian C, Pupuk kandang, Mikoriza, Buah naga