<![CDATA[Abstrak. Inceptisols Cilembu memiliki potensi besar untuk pertanian khususnya untuk budidaya ubi jalar Cilembu. Rendahnya kandungan P-tersedia yang merupakan unsur hara esensial berdampak pada produktivitas tanah. Aplikasi amelioran partikel nano batuan fosfat dan Jamur Pelarut Fosfat (JPF) memiliki kemampuan dalam meningkatkan P-tersedia Inceptisols Cilembu. Penelitian ini bertujuan untuk mengkaji pengaruh amelioran partikel nano batuan fosfat dan JPF terhadap beberapa sifat kimia Inceptisols di sekitar Cilembu. Metode penelitian menggunakan Rancangan Acak Lengkap Faktorial. Faktor pertama yaitu amelioran partikel nano batuan fosfat yang terdiri atas empat taraf, yaitu b0 = 0% (0 g), b1 = 2% (20 g kg-1 tanah), b2 = 4% (40 g kg-1 tanah), dan b3 = 6% (60 g kg-1 tanah). Faktor kedua yaitu JPF yang terdiri atas dua taraf, yaitu h0 = (0 g) dan h1 = JPF (10 g per kg-1 tanah). Parameter yang diamati: pH, P-tersedia, Kapasitas Tukar Kation (KTK), dan populasi JPF. Data hasil pengamatan dianalisis menggunakan analisis varians pada taraf 5%, dilanjutkan dengan uji beda jarak Duncan pada taraf 5%. Hasil analisis varians menunjukkan tidak terdapat interaksi antara amelioran partikel nano batuan fosfat dan JPF terhadap parameter yang diamati. Aplikasi amelioran partikel nano batuan fosfat berpengaruh nyata dalam meningkatkan pH dan P-tersedia. Penggunaan JPF berpengaruh nyata meningkatkan nilai KTK.Abstract. Inceptisols in Cilembu have a great potential for agriculture, especially for sweet potato cultivation. The low available P content, which is an essential nutrient, has an impact on soil productivity. The application of nano particle phosphate rock ameliorant and Phosphate Solubilizing Fungi (PSF) may increasing available P of Inceptisols in Cilembu. The research aimed to find out the effects of nano particle phosphate rock ameliorant and PSF on selected chemical properties of Inceptisols in Cilembu area. The research method used Factorial Completely Randomized Design. The first factor was ameliorant nano particles of phosphate rock application consisted of four levels, namely b0 = 0% (0 g), b1 = 2% (20 g kg-1 of soil), b2 = 4% (40 g kg-1 of soil), b3 = 6 % (60 g kg-1 of soil). The second factor was PSF treatment consisted of two levels, namely h0 = without PSF and h1 = PSF 10 g kg-1 of soil. Parameters observed were pH, available P, Cation Exchange Capacity (CEC), and PSF population. The data were analyzed with analysis of variance at the significance level of 5%, and continued with Duncan multiple range test at the significance level of 5%. The results showed that there was no interaction between ameliorant nano particles of phosphate rock application and PSF inoculation on the observed parameters. The application of ameliorant nano particles of phosphate rock significantly increased soil acidity (pH) and available P. The inoculation of PSF significantly increased the CEC.]]>
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