A Study of the Effect of Phosphorous Solubilization by Microorganisms on Growing Plants Maize (Zea mays) in Adamawa, Cameroon

Aims: Aims of this study was to improve the growth of Maize (Zea mays) in the Adamawa region specially characterized by Sudano-Guinean and Sudano-Sahelean Savannah area.

Localization of Site Study: Study was conducted out on Jun 2021 in Bini-Dang, in order to identify suitable strains of Microorganisms Solubilizing Phosphorus (MSP) of roots and rhizosphere of Zea mays. Ten strains of Microorganisms Solubilizing Phosphorus (MSP) of roots and rhizosphere of Zea mays were sampled.

Methodology: The experimental design was three blocks completely randomized with 132 plots. A total of 11 treatments were considered during the experiment. Different treatments are constituted: BN, NBB, BNB17, RBNBB5, SSL9, SDB6, RKB1, BG12, SDL4, RDB1 and Control) repeated 12 times. Parameters were: germination time, number of leaves, height of plants, diameter of stem, date of flowering and the number of cobs per plant.

Results: Our results showed that Bacteria solubilizing phosphorous was significantly (P<0.05) improve yields of plants compared to non-inoculated control in all treatments. Germination time, the number of leaves, the height of plants, the diameter of stem, the flowering and the number of cobs per plant were statistically (P<0.05) most important with uses of strains microorganisms solubilizing phosphorous in block 2, which received Natural Phosphorus (NP) and inoculated by Microorganisms Solubilizing Phosphorous in the block 3 (inoculated with MSP).

Conclusion: Strains of MSP improves the germination, growing and number of cobs per plants of Zea mays in solubilizing Natural Phosphorous (NP). The strains of MSP, BNB7, BNB17, RBNB5, BN and SDB6 were significantly most performants, compared to others strains effect on field. The MSP could be used as biological fertilizers by direct application on soils with Natural Phosphorous (NP).