Microbiological Alternatives for the Improvement of Cowpea Growth
The low phosphorus (P) availability in soil, absorption inefficiency and high costs of phosphate fertilization are limiting factors for agricultural productivity. A biotechnological alternative is the use of soil microorganisms, capable of improving P disponibility, absorption and the use of fertilizer cheaper as rock phosphate fertilization (PR). This experiment was performed under screen house conditions aiming to evaluate the effect of an arbuscular-mycorrhizal fungus (HMA) (Glomus fasciculatum) and a P solubilizing fungus (MSP) (Mortierella sp.) on P uptake and cowpea (Vigna unguiculata L. Walp.) growth, planted with three concentrations (0, 100 and 300 mg of P per each kg of soil) of PR. A significant increase (P≤0.05) in dry mass, plant height, mean stem diameter and foliar phosphorus, was observed in the HMA-inoculated plants compared with the HMA-non inoculated plants. No significant differences were identified when PR was added or MSP was inoculated. The results suggest that the use of HMA may improve P absorption and cowpea growth under the evaluated conditions.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Medellín - Facultad de Ciencias Agrarias
2013
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| Online Access: | https://revistas.unal.edu.co/index.php/refame/article/view/41145 |
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