<![CDATA[Trichoderma spp. can act as a biofactor to accelerate decomposition, as a phosphate solvent and to control pests and diseases. This research aims to determine the effect of Trichoderma species and soil type on P uptake and growth of soybean plants (Glycine max.L). The research was carried out at the experimental field of the Faculty of Agriculture, Tanjungpura University. The experiment was carried out using the field experimental method with a Completely Randomized Design (CRD) consisting of 2 factors. Factor A is the type of soil and factor B is the type of Trichoderma. Factor A consists of 2 treatment levels and factor B consists of 3 treatment levels with 5 replications so that there are a total of 30 polybags. Factor A consists of 2 levels, namely peat soil and Ultisol and factor B consists of 3 levels, namely Trichoderma harzianum, Tricoderma koningii, and Trichoderma viride. The effect of treatment on observation parameters was analyzed using Analysis of Variance / Two way ANOVA. If there is a real effect of treatment on diameter, continue with the Tukey's Honestly Significant Difference Test (HSD-Tukey's). The results show that soil type and Trichoderma type have a significant effect on soil pH. Soil type treatment has a significant effect on plant height, plant dry weight, soil pH, soil organic carbon and soil available phosphorus. Treatment of Trichoderma types has a real influence on soil pH. The interaction between soil type and Trichoderma treatment had a significant effect on soil pH. Keywords: peat, P uptake, soybean,, Trichoderma, Ultisol. INTISARITrichoderma spp. dapat berperan sebagai biofaktor untuk percepatan dekomposisi, sebagai pelarut fosfat dan pengendalian hama penyakit. Penelitian ini bertujuan untuk mengetahui pengaruh jenis Trichoderma dan jenis tanah terhadap serapan P dan pertumbuhan tanaman kedelai (Glycine max.L). Penelitian dilaksanakan di lahan percobaan Fakultas Pertanian Universitas Tanjungpura. Percobaan dilakukan menggunakan metode eksperimen lapangan dengan Rancangan Acak Lengkap (RAL) terdiri 2 faktor. Factor A adalah jenis tanah dan factor B adalah jenis Trichoderma. Faktor A terdiri 2 taraf perlakuan dan faktor B terdiri 3 taraf perlakuan dengan 5 ulangan sehingga total ada 30 polybag. Faktor A terdiri dari 2 taraf yaitu tanah gambut dan Ultisol dan factor B terdiri dari 3 taraf, yaitu Trichoderma harzianum, Tricoderma koningii, dan Trichoderma viride. Pengaruh perlakuan terhadap parameter pengamatan dianalisis dengan Analysis of Variance / ANOVA Two way. Apabila terdapat pengaruh nyata perlakuan terhadap diameter, dilanjutkan dengan uji Uji Beda Nyata Jujur Tukey’s (HSD-Tukey’s). Hasil menunjukkan bahwa jenis tanah dan jenis Trichoderma berpengaruh nyata terhadap pH tanah. Perlakuan jenis tanah berpengaruh nyata terhadap tinggi tanaman, berat kering tanaman, pH tanah, karbon organik tanah, dan fosfor tersedia tanah. Perlakuan jenis Trichoderma memberikan pengaruh nyata terhadap pH tanah. Interaksi perlakuan jenis tanah dan jenis Trichoderma berpengaruh nyata terhadap pH tanah. Kata kunci : gambut, kedelai, serapan P, Trichoderma, ultisol.]]>
