Teknologi Formula Rizobakteri Untuk Meningkatkan Efisiensi Pemupukan Dan Menekan Penyakit Hawar Daun Bakteri Pada Tanaman Bawang Merah

Ernita, Milda (2015) Teknologi Formula Rizobakteri Untuk Meningkatkan Efisiensi Pemupukan Dan Menekan Penyakit Hawar Daun Bakteri Pada Tanaman Bawang Merah. Agricultural Science, 1 (1). pp. 81-89. ISSN 2447-0116

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Abstract

Bacterial leaf blight (BLB) caused by Xanthomonas axonopodis pv.allii (Xaa), one of the low production of onion. Control of the disease in the field tend to use chemical pesticides that have a negative impact on the environment and residues on crops. Environmentally friendly alternative control using biological agents is indigenous rhizobacteria. Indigenous rhizobacteria P.geniculata strain XJUHX- 19 and Bacillus pumilus strain TSH22w is PGPR and were able to improve their resistance to Xaa, growth and yield of onion in planta. The study aims to get the type formula of rhizobacteria to increasing resistance to Xaa, growth and yield of onion in the field. The treatment consisted of a kind indigenous rhizobacteria: P.geniculata strain XJUHX-19 (R1) and B.pumilus strain TSH22w (R2) and type of formulation : compost titonia (F1), peat (F2) and coconut water (F3), and fertilization urea is 400 kg ha-1 (N1) and 800 kg ha-1 (N2), as a control without rhizobacteria (Ro), that consists of 14 combinations of treatments and 3 replications. The results showed all formulas were able to support the growth of rhizobacteria to 3 weeks of storage. Formula of coconut water for both types indigenous rhizobacteria onion effectively improve resistance against Xaa, growth and yield of onion and fertilization of 400 kg ha-1 of urea can be reduce disease severity BLB.

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