Kajian Efektifitas Penghambatan Nitrifikasi pada Rhizosphere Berbagai Spesies Tanaman Brachiaria di Alfisols

Anastasia Intan Sawitri, Purwanto Purwanto, Slamet Minardi

Abstract


Title : Study on Effectiveness of Nitrification Inhibition in Rhizosphere of Brachiaria species on Ultisol. It has been known for some plant species Brachiaria (Brachiaraia decumbens, Brachiaria humidicola , and Brachiaria brizantha ) that have been studied has been hoen to effectively inhibit nitrification from that rhizosphere activity. Therefore it is necessary to further resarch the cultivation of other plant Brachiaria species such as Brachiaria mutica , Brachiaria decumbens and Brachiaria humidicola, to determine the effectiveness as a barrier to the rate of nitification that carried out by the method of pot experiments with functional relationship variables approach based on sampling and nondestructif Completely Randomized Design ( CRD ) consisting of plant species Brachiaria factor . and various doses of N fertilizer is 100 kg / ha , 150 kg / ha , 200 kg / ha . Results of this study indicate that 1 ) Brachiaria mutica , Brachiaria decumbens and Brachiaria humidicola , very significant on nitrification potential , but the treatment of a wide range of doses of fertilizer N is not a real effect on nitrification potential . 2 ) Highest nitrification potential value in the treatment Brachiaria mutica in the amount of 5,114 mg NO2- / g soil /5hour , while the lowest value of the potential nitrification in plants Brachiaria humidicola is equal to 0,414 mg NO2- / g soil /5hour . 3 ) Of the three treatment plants Brachiaria sp . in that the treatment plant can Brachiaria humidicola considered the most effective in inhibiting nitrification.

Keywords


nitrification inhibition; Brachiaria; potential nitrification; NH4 +; NO3-

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References


Gopalakrishnan, S., T. Watanabe, S.J. Pearse, O. Ito, Z.A.K.M. Hossain and G.V. Subbarao. 2009. Biological Nitrification Inhibition (BNI) By Brachiaria humidicola Roots Varies With Soil Type And Inhibits Nitrifying Bacteria, But Not Other Major Soil Microorganisms. Soil Science. Plant Nutr. 55: 725–733.

Myrold,D.D. 1999. Transformation of Nitrogen. In: Principles and Application of Soil Microbiology. Commonwealth Agricultural Bureau, Wallingford.

Rao,N.S.S. 1994. Soil Microbiology (Fourth Edition of Soil Microorganisms and Plant Growth). Science Publishers, Inc. 407 p.

Raun,W.R and Johnson,G.V. 1999. Improving Nitrogen Use Efficiency for Cereal Production (Review & Interpretation). Agronomy Journal. 91. 357 – 363.

Subbarao, G.V., M. Rondon, O. Ito, T. Ishikawa, I.M. Rao, K. Nakahara, C. Lascano and W.L. Berry. 2007a. Biological Nitrification Inhibition (BNI)—Is It A Widespread Phenomenon? Plant Soil 294: 5–18.

Subbarao, G.V., T. Ishikawa, K. Nakahara, O. Ito, M. Rondon, I.M. Rao and C. Lascano. 2007b. Characterization Of Biological Nitrification Inhibition (BNI) Capacity In Brachiaria humidicola. JIRCAS Working Report 51: 99–106.

Subbarao GV, Nakahara K, Ishikawa T, Yoshihashi T, Ito O, Ono H, Ohnishi-Kameyama M, Yoshida M, Kawano N and Berry WL. 2008. Free fatty acids from the pasture grass Brachiaria humidicola and one of their methyl esters as indicators of nitrification. Plant Soil 313, 89–99.

Subbarao GV, Sahrawat KL, Nakahara K, Ishikawa T, Kishii M, Rao IM, Hash CT, George TS, Srinivasa Rao P, Nardi P, Bonnett D, Berry W, Suenaga K and Lata JC 2012. Biological Nitrification Inhibition – A Novel Strategy To Regulate Nitrification In Agricultural Systems. Advances in Agronomy 114, 249–302.

Suzuki I, Dular U, Kwok SC. 1994. Ammonium and Ammonium Ion As Substrate For Oxidation by Nitrosomonas Cells and Extracts. Journal Bacteriol Vol 176:6623–6630.

Warneke S, Schipper LA, Bruesewitz DA, McDonald I, Cameron S. 2011. Rates, Controls And Potential Adverse Effects Of Nitrate Removal In A Denitrification Bed. Ecol Eng 37:511–522

Watanabe,T., Osamu.I, 2008. Effect of Brachiaria humidicola Root Exudats, Rhizosphere Soils, Moisture and Temperature Regime on Nitrification Inhibition In Two Volcanic Ash Of Japan. World Journal of Agricultural Science. 4(1): 106-113.




DOI: http://dx.doi.org/10.15608%2Fstjssa.v10i2.197

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