i ABSTRAK
Muhammad Firli Magribi Saman, 2012. Pengaruh Mikroba Pelarut Fosfat terhadap Aktivitas Enzim Fosfatase, P - Tersedia, Serapan P, Pertumbuhan dan Hasil Jagung (Zea mays L.) pada Inceptisols Asal Jatinangor. Dibimbing oleh Betty Natalie Fitriatin dan Anne Nurbaity.
Karakter Inceptisols asal Jatinangor yang memiliki kandungan P-tersedia rendah menjadi latar belakang dari tujuan memperbaiki produktivitas tanah untuk meningkatkan hasil tanaman. Penelitian ini dilakukan untuk mengetahui pengaruh mikroba pelarut fosfat yang terdiri dari bakteri pelarut fosfat Pseudomonas mallei dan jamur pelarut fosfat Penicillium sp terhadap aktivitas enzim fosfatase, P-tersedia, serapan P, pertumbuhan dan hasil jagung (Zea mays L.) pada Inceptisols asal Jatinangor. Percobaan telah dilaksanakan dari April sampai dengan Agustus 2012 di kebun percobaan Fakultas Pertanian, Universitas Padjadjaran, Jatinangor, dengan ketinggian tempat 752 m dpl. Penelitian ini menggunakan Rancangan Acak Kelompok dengan sepuluh perlakuan dan tiga kali ulangan. Perlakuan terdiri atas beberapa jenis dan dosis inokulan dalam bahan pembawa 100g gambut steril (A) Tanpa inokulan, (B) BPF dosis 5%, (C) BPF dosis 10%, (D) BPF dosis 15%, (E) JPF dosis 5%, (F) JPF dosis 10% (G) JPF dosis 15%, (H) BPF + JPF dosis 5%, (I) BPF + JPF dosis 10%, (J) BPF + JPF dosis 15%. Hasil penelitian menunjukkan bahwa mikroba pelarut fosfat memberikan pengaruh signifikan terhadap peningkatan P-tersedia, serapan P, pertumbuhan dan hasil jagung. Perlakuan BPF dengan dosis 10% memberikan hasil terbaik terhadap peningkatan P-tersedia sebesar 47% , serapan P sebesar 37%, pertumbuhan dan hasil jagung sebesar 55%.
ii ABSTRACT
Muhammad Firli Magribi Saman, 2012. The Effect of Phospate Solubilizing Microorganism on Phosphatase Activity, P-uptake, Availability of Phosporus, Growth and the Yield of Maize (Zea mays L.) in Inceptisols Jatinangor. Supervised by Betty Natalie Fitriatin and Anne Nurbaity.
Low soil available P on Inceptisols Jatinangor became a background of purpose improving the productivity of the soil to improve crop yields. This research was conducted to find out the effect of phosphate solubilizing microorganism which consist of phosphate solubilizing bacteria Pseudomonas mallei and phosphate solubilizing fungi Penicillium sp on phosphatase activity, P - uptake, availability of phosphorus, growth and the yield of maize plants (Zea mays L.) on Inceptisols Jatinangor. The research was conducted from April 2012 to August 2012 at the field of Agricultural Faculty, University of Padjadjaran, Jatinangor at 752 m above sea level. The experiment used a Randomized Block Design which was arranged in one factor and three replications. The factor were inoculation of phosphate solubilizing microorganism in carrier consisted of ten levels: without phosphate solubilizing microorganism, 5% isolate of phosphate solubilizing bacteria, 10% isolate of phosphate solubilizing bacteria, 15% isolate of phosphate solubilizing bacteria, 5% isolate of phosphate solubilizing fungi, 10% isolate of phosphate solubilizing fungi, 15% isolate of phosphate solubilizing fungi, 5% isolate of phosphate solubilizing bacteria and fungi, 10% isolate of phosphate solubilizing bacteria and fungi, 15% isolate of phosphate solubilizing bacteria and fungi. The results of this research showed that solubilizing phosphate microorganism gave significant effects on phosphatase activity, concentration of phosporus, availability of phosporus, and the yield of maize plants. Treatment with 10% isolate of phosphate solubilizing bacteria in carrier gave the highest result increasing P - uptake (47%), availability of phosporus (37%), and the yield of maize plants (55%).
