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Tengku Sabrina
Program Studi Agroekoteknologi, Fakultas Pertanian, USU, Medan
Agriculture, Biological Sciences & Forestry

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Pengaruh Pemberian Azolla dan Bakteri Pelarut Fosfat Terhadap Pertumbuhan dan Produksi Padi Sawah (Oryza sativa L.) Di Tanah Sulfat Masam Riandi Syahputra; Asmarlaili Sahar Hanafiah; Tengku Sabrina
Jurnal Pertanian Tropik Vol. 5 No. 2 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (79.012 KB) | DOI: 10.32734/jpt.v5i2.3024

Abstract

Tanah sulfat masam adalah tanah yang bermasalah yang memiliki pH rendah, ketersediaan hara P yang rendah, dan tingginya kelarutan Al. Upaya untuk mengoptimlkan produktivitas tanah sulfat masam adalah melalui pemanfaatan tanaman toleran sulfat masam, mikroorganisme tanah dan pupuk organik. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian azolla dan bakteri pelarut fosfat terhadap pertumbuhan dan produksi padi sawah ( Oryza sativa L. ) di tanah sulfat masam. Penelitian ini dilaksanakan di rumah kaca Fakultas Pertanian Universitas Sumatera Utara di mulai pada bulan September sampai Desember 2017. Rancangan yang digunakan adalah rancangan acak kelompok faktorial dengan 4 ulangan. Faktor pertama pemberian azolla segar dengan 4 taraf, yaitu A0 = 0 g/pot, A1= 30 g/pot, A2= 60 g/pot, A3= 90 g/pot dan faktor kedua bakteri pelarut fosfat dengan 2 taraf, yaitu P0= tanpa bakteri pelarut fosfat dan P1= aplikasi bakteri pelarut fosfat. Hasil penelitian menunjukkan peningkatan dosis azolla mampu meningkatkan pertumbuhan padi sawah, Sedangkan aplikasi bakteri pelarut fosfat mampu meningkatkan pertumbuhan dan produksi tanaman padi. Pemberian azolla segar 60 g/ember dan pemberian bakteri pelarut posfat merupakakan perlakuan terbaik yaitu ( jumlah anakan 4 anakan, jumlah malai 8,25 malai, jumlah gabah berisi 272,5 gabah, bobot bruto gabah kering 6,75 g, bobot jerami kering 18,27 g).
Test of effectiveness decompocers on some types of compost material Budi Ananda Pratama; Tengku Sabrina; Mariani Sembiring
Jurnal Pertanian Tropik Vol. 6 No. 1 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (616.391 KB) | DOI: 10.32734/jpt.v6i1.3054

Abstract

Organic residues resulting from agricultural activities are nutrients for plants, but must go through a process of decomposition by soil microorganisms called decomposers. This study aims to examine the effect of several types of decomposers on several types of compost materials. This research was conducted at university faculty of agriculture of North Sumatera. This research was conducted starting from November 2017 - January 2018. In this research the design used is factorial randomized block design consisting of 2 factors of treatment that is compost material (TKKS, bagasse, straw) and decomposer type comes from, (TKKS, Bagasse, straw). the results showed that the compost material derived from TKKS was compost material containing N-total 1.31%, K-total 0.880%, C-organic 34.02%, C / N 30.51% and total microbial 2.5 x 108 CFU, higher than other compost materials. Decomposers derived from TKKS are decomposers capable of lowering the C / N ratio lower than the decomposers derived from other materials of 26.59, with total K-content of 0.556%, higher than others, C-organic 23.79% lower than others , but the highest N-total content comes from straw material that is 0.94%. The interaction between the compost and the decomposer derived from the isolates reduced C-organic and C / N lower than the others, but the reaction from the original decomposer to the N-total content of the TKKS was higher at 1.24%, the lower bagasse, 1.10 % and higher straw is 0.72% and K-total compost from TKKS is 0.91%, bagasse 0.21% and straw lower is 0.22%.
Co-Authors Asmarlaili Sahar Hanafiah Budi Ananda Pratama Mariani Sembiring Riandi Syahputra