Improvement of the rice productivity by the use of biofertilizers in Mayo-Kebbi East in Chad
DOI:
https://doi.org/10.59463/6yjenb32Keywords:
Phosphate-Solubilizing Microorganisms, Arbuscular Mycorrhizal Fungi, Vivianite, Organic fertilizers, yieldsAbstract
The present work was carried out in the irrigated farm field of the city of Bongor in Chad. The main objective was to study the contribution of the organic fertilizers such as Phosphate-Solubilizing Microorganisms (MSP), Arbuscular Mycorrhizal Fungi (CMA), Dried Cow Dung (BV) and vivianite (V) rock powder on the growth, development and yield of a local rice (Oriza sativa L.) variety named SAHEL. The test was carried out from September to December 2020 on a plot of 104.94 m². The experimental design was a complete randomized blocks consisting of 3 blocks and eight treatments (5g of CMA, 1 ml of inoculum from each of the three types of MSP (CHK1, D, RSB7), 500g of cow dung compost, 20g of vivianite and the NPK fertilizer as the positive control). The uninoculated plants served as negative control (T-). Each treatment was repeated three times. The results indicate that the rice plants showed good development and better productivity for plants under the organic amendments as compared to the negative control plants. It emerges from this study that the treatment based on cow dung (BV) increases the recovery rate of rice plants by 16.91%, the plant height by 5%, the number of fertile tillers by 31% and the yields of about 76.12% relative to the negative control. As compared to the negative control, the positive control (T+) treatment improves the height of the rice plants approximately by 9.76%, the number of tillers by 88.79% and the number of flowering tillers by 51%. The vivianite treatment as compared to the negative control increases the number of fertile tillers by 44.65%, the number of filled kernels by 34.36% and the yields of the order of 91.44%. Improved yields about 68.46% was observed under the CMA treatment. Fertilizers based on mycorrhizal fungi, dried cow dung, vivianite would provide important benefits to the rice plants and can be recommended to farmers in Bongor for improving rice productivity.
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