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Abstrak (Bhs. Indonesia)

Penelitian ini bertujuan untuk mengetahui pengaruh dosis terbaik formula pupuk organik berbasis B. subtilis B1 terhadap pertumbuhan dan produksi tanaman padi gogo. Penelitian ini telah dilaksanakan mulai Maret sampai September 2016 di lahan milik petani Desa Rempoah, Kecamatan Baturaden, Kabupaten Banyumas dan Laboratorium Fakultas Pertanian, Universitas Jenderal Soedirman. Rancangan percobaan yang digunakan yaitu Rancangan Acak Kelompok (RAK), dengan 6 perlakuan dan 4 ulangan, terdiri atas P0 (Kontrol), P1 (0,2 Kg/m2), P2 (0,4 Kg/m2), P3 (0,6 Kg/m2), P4 (0,8 Kg/m2), dan P5 (1 Kg/m2). Tanaman padi dipupuk urea 200 kg/ha, dan phonska 150 kg/ha. Variabel yang diamati yaitu tinggi tanaman, panjang daun, jumlah anakan per rumpun, jumlahan akan produktif, jumlah malai per tanaman, panjang malai, jumlah gabah per malai, jumlah gabah isi per malai, jumlah gabah hampa per malai, bobot gabah per rumpun, bobot gabah per petak efektif, bobot 1000 gabah. Data hasil pengamatan dianalisis dengan uji F dilanjutkan dengan uji BNT pada taraf kesalahan 5%. Hasil penelitian menunjukkan bahwa perlakuan dosis pupuk organik berbasis Bacillus subtilis B1 berpengaruh sangat nyata terhadap bobot gabah per petak, bobot gabah per rumpun, jumlah gabah per malai, jumlah gabah isi per malai, berpengaruh terhadap tinggi tanaman, jumlah anakan, jumlah anakan produktif, dan jumlah malai per tanaman. Perlakuan yang diberikan tidak berpengaruh terhadap panjang daun, bobot 1000 gabah, jumlah gabah hampa per malai dan panjang malai. Bobot gabah per petak terbaik dicapai pada perlakuan pemberian pupuk organik berbasis B. substilis B1 sebanyak 0,6 kg/m2 (6 t/ha), yaitu mencapai 0,51 t/ha dengan peningkatan hasil sebesar 158,32 % dibanding kontrol.

Abtrak (Bhs. Inggris)

The objective of this experiment were to obtained the best dosage of organic fertilizer formula based on B. subtilis B1 on the growth and yield of up land rice. This research was conducted from March to September 2016 in the village farmer's irrigation land Rempoah, District Baturaden, Banyumas and Laboratory, Agriculture Faculty, Jenderal Soedirman University. The experimental design was randomized Complete block design (RCBD), with 6 treatments and 4 replicates, consisting of P0 (control), P1 (0,2 Kg/m2), P2 (0,4 Kg/m2), P3 (0,6 Kg/m2), P4 (0,8 Kg/m2), dan P5 (1 Kg/m2). Rice plants was fertilized with urea 200 kg / ha, and phonska 150 kg / ha. Variables observed were plant height, leaf length, number of tillers per hill, number of productive tiller, the number of panicles per plant, panicle length, number of grains per panicle, number of filled grain per panicle, number of grain hollow per panicle, grain weight per panicle, weight effective grain per plot, weight of 1000 grain. The data was analyzed by F test followed by LSD test at level 5% error. The results showed that organic fertilizer based on Bacillus subtilis B1 dose highly significant on grain weight per plot, grain weight per panicle, number of grains per panicle, number of filled grain per panicle significantly different on plant height, the number of tillers, number of productive tiller, and the number of panicles per plant. But the treatment had no effect on leaf length, 1000 grain weight, number of empty grains per panicle and panicle length. The best grain weight per plot was reached at 0,6 kg/m2 of organic fertilizer application rate yielded 6 t/ha, was reached 0,51 t/ha increased 158,32 % compared with the control.

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