Dataset Information

Integration of poultry manure and phosphate solubilizing bacteria improved availability of Ca bound P in calcareous soils.

ABSTRACT: A laboratory incubation experiment was executed to examine the role of phosphate solubilizing bacteria (with PSB and without PSB) and poultry manure (4, 8 and 12 t PM ha-1) in improving P mobilization/mineralization under four different lime regimes (4.78, 10, 15 and 20% CaCO3 M/M) for 56 days using three factorial complete randomized design (CRD) with triplicates. Phosphorus availability progressively increased over time irrespective of PSB inoculation, PM and lime levels. The PSB and PM (4-12 t ha-1) addition into soil significantly increased Olsen P at all incubation intervals. Post incubation PSB survival increased by 12 and 9% with inoculation and 12 t PM ha-1 over control and 4 t PM ha-1, respectively. Liming ominously reduced P mobilization/mineralization by 1.3, 2.6 and 10.5% and PSB population by 6.6, 7.3 and 16.3% at 10, 15 and 20% (lime), respectively, over control at day 56. However, PSB and PM addition (with increasing rate) into soil significantly counterbalanced these ill effects of lime. Thus, the application of PSB and PM is a promising measure to enhance P availability in calcareous soils and shall be practiced.

SUBMITTER: Adnan M

PROVIDER: S-EPMC6757081 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Integration of poultry manure and phosphate solubilizing bacteria improved availability of Ca bound P in calcareous soils.

Adnan Muhammad M Fahad Shah S Khan Imtiaz Ali IA Saeed Muhammad M Ihsan Muhamad Zahid MZ Saud Shah S Riaz Muhammad M Wang Depeng D Wu Chao C

3 Biotech 20190923 10

A laboratory incubation experiment was executed to examine the role of phosphate solubilizing bacteria (with PSB and without PSB) and poultry manure (4, 8 and 12 t PM ha<sup>-1</sup>) in improving P mobilization/mineralization under four different lime regimes (4.78, 10, 15 and 20% CaCO<sub>3</sub> M/M) for 56 days using three factorial complete randomized design (CRD) with triplicates. Phosphorus availability progressively increased over time irrespective of PSB inoculation, PM and lime levels. ...[more]

PMID: 31588392

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Project description:Phosphate solubilizing bacteria (PSB) is an advantageous way to supply phosphate (P) to plants. The Mediterranean climate of Morocco, especially the low-lying areas, is semi-arid with nutrient-depleted soils in which small-scale, low-income farmers dominate without access to expensive inorganic fertilizers. However, there is not a wide range of PSBs suitable for various agroecological situations. Furthermore, our understanding of the soil and climatic variables that influence their development is limited. This study aims to examine the impacts of specific environmental factors, such as climate and soil, on the abundance, potential, and diversity of PSBs in four agricultural regions of Morocco. To assess the possible impact of these factors on the P solubilization capacity of PSBs and plant growth-promoting (PGP) traits, we analyzed the soil and climate of each sample studied. Similarly, we tested the P solubilization efficiency of the isolates. The bacteria were isolated in a National Botanical Research Institute's phosphate (NBRIP) agar medium. A total of 51 PSBs were studied in this work. The P-solubilization average of Rock P (RP) and Tricalcium P (TCP) of all strains that were isolated from each of the four regions ranged from 18.69 mg.L-1 to 40.43 mg.L-1 and from 71.71 mg.L-1 to 94.54 mg.L-1, respectively. The PGP traits of the isolated strains are positively correlated with the PSBs abundance and the sample characteristics (soil and climate). The morphological and biochemical characteristics of the strain allowed us to identify around nine different bacterial genera, including Bacillus, Pseudomonas, and Rhizobium. The findings showed that bacterial communities, density, and potency are closely correlated to various edapho-climatic conditions such as temperature, precipitation, soil nutrient status, and soil texture. These findings could be used to improve an effective plant-PSBs system and increase agricultural output by taking into account their specific ecological traits and plant growth mechanisms.

Dataset Information

Integration of poultry manure and phosphate solubilizing bacteria improved availability of Ca bound P in calcareous soils.

Publications

Integration of poultry manure and phosphate solubilizing bacteria improved availability of Ca bound P in calcareous soils.

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