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NIKEN OKTAVIANI SRI

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Abstrak (Bhs. Indonesia)

Penelitian ini bertujuan untuk mengetahui pengaruh inokulasi kombinasi isolat PGPR terhadap tanaman padi dan mendapatkan kombinasi isolat PGPR yang mampu meningkatkan pertumbuhan dan hasil padi. Penelitian dilaksanakan di Laboratorium Agronomi dan Hortikultura Unsoed mulai bulan Oktober 2018 sampai Januari 2019. Rancangan perlakuan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan 8 perlakuan dan diulang tiga kali. Perlakuan yang dicoba yaitu kontrol tanpa inokulasi isolat PGPR (K), Rhizobium sp. LM-5 (A), isolat R08 (B), isolat R011 (C), Rhizobium sp. LM-5 + isolat R011 (AC), Rhizobium sp. LM-5  + isolat R08 (AB), isolat R08 + isolat R011 (BC), Rhizobium sp. LM-5 + isolat R08 + isolat R011 (ABC). Variabel yang diamati meliputi bobot kering akar, bobot kering tajuk, bobot kering tanaman, kehijauan daun, luas daun, jumlah anakan, tinggi tanaman, jumlah malai, jumlah gabah isi per malai, jumlah gabah isi per rumpun, jumlah gabah hampa per malai, bobot gabah per rumpun, bobot 1000 biji dan persentase gabah isi. Hasil penelitian menunjukkan bahwa inokulasi kombinasi isolat PGPR mampu meningkatkan pertumbuhan dan hasil tanaman terutama pada tinggi tanaman, jumlah anakan, kehijaun daun, luas daun, bobot kering akar, bobot kering tajuk, bobot kering tanaman, jumlah malai, jumlah gabah isi per malai, jumlah gabah isi per rumpun dan bobot gabah per rumpun. Perlakuan Rhizobium sp. LM-5  + R011 (AC) menghasilkan bobot gabah sebesar 21,17 g per rumpun.

Abtrak (Bhs. Inggris)

This research was aimed to study The effect of PGPR combination on rice plants and obtain a combination of PGPR isolates that can increase rice growth and yield. The research was held in Agronomy and Horticulture Laboratory UNSOED from October 2018 until January 2019. The research was arranged with Randomized Block Design with 8 treatments and three replications .The treatments were control without inoculation PGPR (K), Rhizobium sp. LM-5 (A), Isolate R08 (B), Isolate R011 (C), Rhizobium sp. LM-5 + R011 (AC), Rhizobium sp. LM-5 + R08 (AB), R08 + R011(BC), Rhizobium sp. LM-5 + R08 + R011 (ABC). Variables observed were root dry weight, shoot dry weight, plant dry weight, leaf grenness, leaf area, number of tillers, plant height, number of grains per panicle, number of grains per clump, number of empty grains per panicle, grains weight per clump, percentage of grains, and 1000 grains weight. The result showed that inoculation of PGPR gave the effect on root dry weight, shoot dry weight, plant dry weight, leaf grenness, leaf area, number of tillers, plant height, number of grains per panicle, number of grains per clump, weight of grain per clump. The combination of Rhizobium SP. LM-5 + R011 (AC) treatment gave the highest grain weight 21,17 g per clump.

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