The attainment of the millennium for development objectives require to improve the productivity of major cultures like maize (Zea mays L.). The present study aimed to assess the potential of Glomus cubens, Rhizophagus intraradices and Funneliformis mosseae to improve the productivity of corn cultivated on reddish ferrous soil in Southern Benin. A block of nine treatments with four repetition completely randomized was installed. Plant height and diameter and leaf area are growth parameters measured. Grain yield and endomycorrhizal infection were also evaluated. The best growths and grain yield (2.33 t/ha and 2.12 t/ha) were obtained respectively with the plants treated with R. intraradices + 50% of NPK and G. cubens + 50% of NPK compared to the control plants (1.48 t/ha). Moreover, the great frequencies of mycorhization (44% and 32.25% were observed respectively on the plants treated with G. cubens + 50% of NPK and R. intraradices + 50% NPK. These results show that the respective combination of these two Arbuscular Mycorrhizal Fungi with 50% NPK can increase of 50% the seeds yield of corn compared to the seeds yield obtained with the control plants. In addition, G. Cubens and R. intraradices are active in the colonization of maize roots. Use of R. Intraradices or G. cubens in combination with 50% of NPK help to increase the corn productivity and to reduce of half the chemical fertilizer commonly used by corn farmers at Southern Benin.
Aims: One of the alternatives proposed to improve the sustainability and productivity of agricultural systems is the use of organic fertilizers based on arbuscular mycorrhizal fungi. The objective of the study was to evaluate the effectiveness of the native mycorrhizal fungus Rhizophagus intraradices in the field at Ouenou in North Benin for improved maize (Zea mays L.) production. Study Design: The experimental design was a complete random block of three treatments. Mention the design of the study here. Place and Duration of Study: Endomycorrhizal infection was assessed on roots of corn plants at 78 days post-seed. Methodology: Corn variety 2000 SYN EE-W was inoculated with the strain in combination with the mineral fertilizer (NPK) half-dose. Results: Results showed that of the three treatments, the highest heights were observed in plants treated with Rhizophagus intraradices +½ dose of NPK (15:15:15) and urea. The same observations were made with respect to leaf number and leaf area of plants and grain yield. Regarding the endomycorrhizal infection of plants inoculated with Rhizophagus intraradices +½ dose of NPK (15:15:15) and urea, of the three producers, the observation was that the endomycorrhizal infection was elevated to the level of the second producer (P2) which was of the order of (50%) while the mycorrhizal intensity was lower (24.6%) in the same producer. Conclusion: The native mycorrhizal fungus R. intraradices plus the half-dose NPK plus urea, had a positive impact on most of the various parameters.
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