Minardi, S. and Purwanto, (2009) Perakitan Teknologi untuk Peningkatan Efisiensi Pemanfaatan Nitrogen Oleh Tanaman Dengan Penghambat Nitrifikasi Secara Hayati. AGRIVITA, 31. ISSN 0126-0537
Abstract
Nitrification consists of oxidation prooeeses of NH.‘ into NEH by Nieosomonas. and oxidation of ND; into NC.'I3‘b1.r Nitrobaofer. The prooess inftir:I:s a loss of N from soil and fertilizers and generates pollution as well. The purposes of the field study were [a}.to determine the effect of dosage and quality of plant litter on N-rnineraI and nitriiioartion potential; [b].to answer wheti1er nitrification osn be oontroled through the oontrol of applied plant litter quality: I[o‘,i.to reveal the faotors of litter quality detannhhg inhibition eflleot most. The study was oanietl out in ..ium-antono. Iflaranganyar Fteganoy. frornlu'laytoUotober2DO9. 'l11eaxperirnentwas designed in randomized oornpiete block design. with plant litter dosage and quality as axparrnent fa-stole. Measunad variables included soil N mineral. nitrifioalion potential. and soil pH. The results suggested that application of plant litter with low quality led tothe poor release ofNH..*. and low nilrtfioation potential. Ratio of I:iQ1lI'I+l2lt‘.lIl)'t'.l-I'iEt'!I:I-lay it have stronger-:orreiatior1asoont1'oiierofi~ii-it. No3‘ and nitrification potential than Iignin, poly- phenois. and GIN ratio 3iI"lgl..Iifli!'I1.I'. Ratio of ilignin+ polyrphenotstihl sl:ronfiy inhibited N rninaralization and nitriilostion. The resutts suggested that regulation of plant litter quality was able to inhibit nitriiioarti-on and inorassirtg nitrogen use. Keywonds: Nitrogen use eflioienoyr. litter quality. lignin and poiyphanois. mineralization. nitrification, inhibitors
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