TY - JOUR

T1 - Relative efficacy of Pseudomonas spp., containing ACC-Deaminase for improving growth and yield of maize (Zea mays L.) in the presence of organic fertilizer

AU - Naveed, M.

AU - Khalid, M.

AU - Jones, D. L.

AU - Ahmad, R.

AU - Zahir, Z. A.

PY - 2008/6/1

Y1 - 2008/6/1

N2 - This study was designed to assess the performance of plant growth promoting rhizobacteria (PGPR) containing ACC-deaminase for improving growth and yield of maize in the presence of organic fertilizer. Organic fertilizer was prepared by composting fruit and vegetable wastes in a locally-fabricated unit and enriched with N fertilizer applied @ 147 g kg-1 compost. This ‘organic fertilizer’ was used to formulate bio-fertilizers by using three PGPR strains containing ACC-deaminase, Pseudomonas putida biotype A (Q7), Pseudomonas fluorescens (Q14) and Pseudomonas fluorescens biotype G (N3), separately. The organic- and/or bio-fertilizers were applied to maize @ 300 kg ha-1 without/with 88 kg ha-1 urea-N in the field trials. A basal dose of P and K (100 and 50 kg ha-1, respectively) was applied to all plots and also tested in the field trials in the absence of organic-/bio-fertilizer. Results of field study revealed that the organic fertilizer supplemented with 88 kg ha-1 N was equally effective to full dose of N-fertilizer (175 kg ha-1) in improving cob weight, fresh biomass and grain yield of maize. However, bio-fertilizer supplemented with 88 ha-1 N fertilizer significantly increased the growth and yield of maize over full dose of N-fertilizer and exhibited superiority over organic fertilizer. Organic-/bio-fertilizer application also significantly enhanced N, P and K uptakes. The Pseudomonas fluorescens biotype G (N3) containing biofertilizer was found best to increase grain yield and nutrient uptake both in the presence or absence of 88 kg N ha-1. Results may imply that organic waste could be composted into value-added soil amendment by enriching/blending it with N and PGPR containing ACC-deaminase activity. This approach is based on using organic- or bio-fertilizers (N-enriched and inoculated compost) at lower rates (just 300 kg ha-1) instead of tons ha-1 of non-enriched composts. Moreover, this strategy could also be useful to protect our environments against threat posed by organic wastes.

AB - This study was designed to assess the performance of plant growth promoting rhizobacteria (PGPR) containing ACC-deaminase for improving growth and yield of maize in the presence of organic fertilizer. Organic fertilizer was prepared by composting fruit and vegetable wastes in a locally-fabricated unit and enriched with N fertilizer applied @ 147 g kg-1 compost. This ‘organic fertilizer’ was used to formulate bio-fertilizers by using three PGPR strains containing ACC-deaminase, Pseudomonas putida biotype A (Q7), Pseudomonas fluorescens (Q14) and Pseudomonas fluorescens biotype G (N3), separately. The organic- and/or bio-fertilizers were applied to maize @ 300 kg ha-1 without/with 88 kg ha-1 urea-N in the field trials. A basal dose of P and K (100 and 50 kg ha-1, respectively) was applied to all plots and also tested in the field trials in the absence of organic-/bio-fertilizer. Results of field study revealed that the organic fertilizer supplemented with 88 kg ha-1 N was equally effective to full dose of N-fertilizer (175 kg ha-1) in improving cob weight, fresh biomass and grain yield of maize. However, bio-fertilizer supplemented with 88 ha-1 N fertilizer significantly increased the growth and yield of maize over full dose of N-fertilizer and exhibited superiority over organic fertilizer. Organic-/bio-fertilizer application also significantly enhanced N, P and K uptakes. The Pseudomonas fluorescens biotype G (N3) containing biofertilizer was found best to increase grain yield and nutrient uptake both in the presence or absence of 88 kg N ha-1. Results may imply that organic waste could be composted into value-added soil amendment by enriching/blending it with N and PGPR containing ACC-deaminase activity. This approach is based on using organic- or bio-fertilizers (N-enriched and inoculated compost) at lower rates (just 300 kg ha-1) instead of tons ha-1 of non-enriched composts. Moreover, this strategy could also be useful to protect our environments against threat posed by organic wastes.

M3 - Article

VL - 40

SP - 1243

EP - 1251

JO - Pakistan Journal of Botany

JF - Pakistan Journal of Botany

SN - 0556-3321

IS - 3

ER -