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KIKI SEFTYANIS

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Abstrak (Bhs. Indonesia)

Penelitian ini bertujuan untuk (1) mengetahui pengaruh pemberian pupuk organik cair Azolla terhadap pertumbuhan dan hasil jagung manis, (2) mengetahui pengaruh pemberian biopestisida berbasis B. subtilis B1 terhadap pertumbuhan dan hasil jagung manis, dan (3) mengetahui pengaruh pemberian pupuk organik cair Azolla yang ditambahkan dengan biopestisida berbasis B. subtilis B1 terhadap pertumbuhan dan hasil jagung manis. Penelitian dilaksanakan di lahan exfarm Fakultas Pertanian Universitas Jenderal Soedirman dari bulan Desember 2018 sampai bulan Maret 2019. Penelitian menggunakan Rancangan Acak Kelompok Lengkap (RAKL) yang terdiri dari 4 perlakuan yaitu NPK (P0), NPK+POC Azolla (P1), NPK+B. subtilis B1 (P2), NPK+POC Azolla+B. subtilis B1 (P3) dengan 6 ulangan. Variabel pengamatan meliputi: tinggi tanaman, jumlah daun, luas daun, laju pertumbuhan tanaman, kandungan klorofil, saat keluar bunga/pembungaan, bobot segar tanaman, bobot kering tanaman, bobot kering akar, panjang tongkol, diameter tongkol, bobot tongkol berkelobot, bobot tongkol tanpa kelobot, jumlah baris per tongkol, dan bobot biji per tongkol. Data yang diperoleh dianalisis dengan menggunakan uji F, apabila terdapat pengaruh nyata maka diuji lanjut dengan BNT 5%. Hasil penelitian menunjukan bahwa pemberian POC Azolla menghasilkan kandungan klorofil dan luas daun lebih tinggi masing-masing sebesar 21% dan 32%, serta bobot tongkol tanpa kelobot dan bobot biji per tongkol lebih rendah masing-masing sebesar 14% dan 11% dibanding pemberian N,P,K saja. Pemberian B. subtilis B1 menghasilkan kandungan klorofil lebih tinggi sebesar 17%, serta laju pertumbuhan tanaman, bobot kering tanaman, bobot tongkol berkelobot, bobot tongkol tanpa kelobot dan bobot biji per tongkol lebih rendah masing-masing sebesar 45%, 20%, 11%, 13%, dan 13% dibanding pemberian N,P,K saja. Pemberian POC Azolla+B. subtilis B1 menghasilkan luas daun, tinggi tanaman, bobot segar tanaman dan bobot kering akar lebih tinggi masing-masing sebesar 54%, 22%, 13%, dan 24% serta tidak berpengaruh pada hasil jagung manis dibanding pemberian N,P,K saja.

Abtrak (Bhs. Inggris)

This research aims to (1) determine the effect of liquid organic fertilizer Azolla on the growth and yield of sweet corn, (2) determine the effect of B. subtilis B1 based biopesticide on sweet corn growth and yield, and (3) determine the effect of liquid organic fertilizer Azolla added with B. subtilis B1 based biopesticide on the growth and yield of sweet corn. The research was conducted out on the exfarm of the Jenderal Soedirman University Faculty of Agriculture from December 2018 to March 2019. The experimental design used a Randomized Complete Block Design (RAKL) consisting of 4 treatments namely NPK (P0), NPK + POC Azolla (P1 ), NPK + B. subtilis B1 (P2), NPK + POC Azolla + B. subtilis B1 (P3) with 6 replications. Variables observed include: plant height, number of leaves, leaf area, plant growth rate, chlorophyll content, out of flower / flowering, fresh weight plants, plant dry weight, root dry weight, cob length, cob diameter, weighted cob with corn husk, cob weight without corn husk, number of rows per cob , and seed weight per cob. Data obtained were analyzed using the F test, if there was a significant effect, then it would be tested with LSD 5%. Result of the research showed that application of liquid organic fertilizer of Azolla yield of chlorophyll and leaf area higher respectively of 21% and 32%, and weight of cob without weight and seed weight per cob lower respectively of 14% and 11% compared to application N, P, K only. Application of B. subtilis B1 yield chlorophyll content higher of 17%, and plant growth rates, plant dry weight, weighted cob with corn husk, cob weight without corn husk and seed weight per cob lower respectively of 45%, 20%, 11% respectively 13%, and 13% compared to application N, P, K only. Application of liquid organic fertilizer of Azolla + B. subtilis B1 yield leaf area, plant height, plant fresh weight and root dry weight higher respectively of 54%, 22%, 13%, and 24% and did not affect sweet corn yield compared to application N, P, K only.

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