Response of mint to some organic agriculture practices under greenhouse conditions | ||
| Arab Journal of Biotechnology | ||
| Article 1, Volume 17, Issue 2, December 2014, Pages 107-120 PDF (16.24 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/arjb.2014.428030 | ||
| Abstract | ||
| A green house experiment was laid out at Giza Research Station, Agricultural Research Center (ARC), in clay loam soil, during summer season 2012. The effect of application of some plant growth promoting rhizobacteria (PGPR) on growth, yield and components of mint plant spearmint (Mentha viridis Linne) in combination with using organic fertilizers, i.e., compost at a rate of 15 ton/fed-1 was studied. Also, the application of recommended NPK mineral fertilizers with a rate of 500 Kg Ammonium sulphate, 150 Kg P2 O5 and 225 Kg K2O /fed-1 was evaluated. The PGPR used were 1) N2 fixing bacteria e.g. Azotobacter chroococcum, Azospirillum brasilense and Cyanobacteria, e.g., Anabaena, Nostoc and Spirulina, 2) Phosphate dissolving bacteria (PDB), e.g., Bacillus megaterium and 3) Potassium release bacteria (PRB), e.g., Bacillus circulans. The results indicated that application of various PGPR did support both vegetative growth and yield of mint plants. Also, B. megaterium, B. circulans and Azospirillum brasilense had a significant influence as compared to other PGPR applied. Moreover, mixed PGPR scored higher values for all tested parameters as compared to applied compost as such. Application of B. circulans resulted in higher percentage (1.52%) of total oil yield more than the application of each B. megaterium 0.98%, Azotobacter chroococcum (1.00%), Cyanobacteria (1.04%) and compost (1.08%). | ||
| Keywords | ||
| Plant growth promoting Rhizobacteria (PGPR); Mint; Organic farming; Biofertilizres | ||
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