Update Artikelilmiah: 14192

NURUL HIJRIYATUSH SHOLIHAH

NIM

Judul Artikel

Abstrak (Bhs. Indonesia)

Abstrak
Fosfat merupakan unsur hara esensial makro yang penting bagi tanaman, namun ketersediannya terbatas karena terfiksasi unsur hara lain seperti, Al, Fe, Ca dan Mg. Pupuk organik spesifik (POS) diharapkan dapat melarutkan fosfat pada tanah dan tersedia bagi tanaman. Tujuan penelitian: 1) mengetahui jenis dan dosis POS (pupuk organik spesifik) terbaik dalam meningkatkan kelarutan fosfat in vitro 2) mengetahui efektivitas jenis dan dosis POS (pupuk organik spesifik) dalam meningkatkan kelarutan fosfat in vitro. Penelitian dilakukan di Laboratorium Tanah dan Sumber Daya Lahan Fakultas Pertanian serta Laboratorium Riset Univeritas Jenderal Soedirman dari bulan Juli-November 2015. Penelitian menggunakan Rancangan Acak Lengkap dua faktor perlakuan, 3 kali ulangan. Faktor pertama, lima jenis POS(P1= 2%, P2= 4%, P3= 6%, P4= 8% dan P5= 10% humat-fulvat), faktor kedua tiga dosis POS(D1= 1%, D2= % dan D3= 3%). Pengujian in vitro pada 100 ml media pikovskaya cair. Variabel yang diamati: pH media, populasi bakteri pelarut fosfat, P terlarut dan efesiensi P. Pengamatan dilakukan dua kali yaitu masa inkubasi satu minggu dan dua minggu. Hasil penelitian menunjukkan belum mencapai optimum kelarutan tertinggi pada P5D1, kelarutan P inkubasi satu minggu 2,64 mg/L efesiensi P 52,78% ppm-P, inkubasi dua minggu P terlarut sebanyak 2,69 mg/L efesiensi P 53,89% ppm-P.

Abtrak (Bhs. Inggris)

Abstract
Phosphate is essential macro-nutrient that is important for the plants. However, its availability to the plants is limited as fixed by other nutrients such as Al, Fe, Ca and Mg. Specific organic fertilizer (SOF) is expected to dissolve phosphate in the soil and available to plants. This research aimed to: 1) determine type and doses on optimum Specific Organic Fertilizer (SOF) in improving in vitro solubility of phosphate, 2) determine effectiveness of type and dose in improving in vitro solubility of phosphate. Research was conducted at the Laboratory of Soil and Land Resource, Faculty of Agriculture and Research Laboratory of Jenderal Soedirman University from June to November, 2015. This research used Complete Randomized Design with two factors of treatment and 3 repetitions.  The treatment of the first factor was five types of SOF (P1= 2%, P2= 4%, P3= 6%, P4= 8% and P5= 10% content of humic-fulvic), the second factor was three doses of SOF (D1= 1%, D2= 2% and D3= 3%). The trial in 100 ml liquid of picovskaya in vitro. The variables measured were pH of medium, population of phosphate solvent bacteria, dissolved phosphate and efficiency of phosphate. Observation was conducted twice during incubation period, one week and two weeks. The result indicated yet optimum the highest of P5D1, for first week of incubation increased dissolved phosphate during 2,64 mg/L efesiens of phosphate by 52,78% ppm-P, and was able to dissolve phosphate by 2,69 mg/L efesiens of phosphate by 53,89% ppm-P in secone weeks of incubation.

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