Field Evaluation of Growth and Yield of Two Local Rice Varieties (Tox-728-1 and Madjitolngar) in Response to Indogenous Mycorrhizal Inoculation in South-Chad

Abstract

This study was carried out to find out how dependent are two local rice varieties (Magitolngar and Tox-728-1) to inoculation with selected endogenous arbuscular mycorrhizal fungi (AMF) in a field where they were isolated. The multi-indigenous endomycorrhiza spores previously isolated and identified were the active ingredient in the production of bioinoculants used for this purpose. Spores massively multiplied from the rhizosphere of each rice variety in each of the four locally collected soils substrates were harvested to constitute 08 AMF inoculants (Kema = T1; Lama = T2; Latox = T3; Ndjatox = T4; Koloma = T5; Kolotox = T6; Ndjama = T7; Ketox = T8). These inoculants were field tested on the two rice varieties at Kelo, under a complete randomized block design, comprising 10 treatments (8 inoculants, 01 positive control = T9, 01 negative control = T10), each of which was repeated thrice. The analysis of data indicates that AMF-inoculated plants were taller, developed more tillers/plant, and produced more rice grains/panicle than non-AMFinoculated plants for both studied rice varieties. The rice variety Madjitolngar yielded more grains (7.5 t/ha) than the Tox-728-1 variety (5.8 t/ha). Moreover, inoculants Koloma (T1), Latox (T3) and Kolotox (T6) on the one hand, Koloma (T1) and Ketox (T8) on the other hand, were best suited for the improvement of growth and yield of the rice varieties Madjitolngar and Tox-728-1 respectively, tested under field conditions at Kelo. In this study, the two rice varieties have shown a dependency to endomycorrhizal symbiosis at Kelo, and therefore, an industrial-scale production of efficient endomycorrhal inoculants is necessary to sustainably boost the productivity of this important crop in Chad.

Combined Effect of Doses of Fertilizer and Different Densities on Agronomic Parameters of Rice (Oryza sativa (L.)) Adapted in Humid Area in The Valley of Benoué, Cameroon

“…The number of seeds per panicle of the variety Nerica L36 increased for all the densities considered. The same results were found by Nadjilom et al (2020), which showed significant seeds number per panicle of two varieties of Rice with mycorrhized than non-mycorrhized treatment in South-Chad.…”

“…Comparatively, between the amount, the doses 2, 3 and 4 were significant (P≤0.05) on the number of panicles per plant for density 2 (25 cm x 25 cm). Considering the doses for density 2, the number of panicles per plant varied from 16 to 18 compared to dose 1 (14). Contrarily, the effect of different amounts not influence the number of panicles per plant for the density 1 and 3.…”

“…These different doses improve the size of panicles with the density 1 and 3. The works ofNadjilom et al (2020) showed positive responds on size of panicles of two varieties of Rice with mycorrhized than non-mycorrhized treatment in South-Chad.…”

Effect of in vitro Produced Arbuscular Mycorrhizal Fungi Inoculum on Anaerobic Direct Seeded and Transplanted Paddy

“…The authors reported that spraying humic acid on leaves of rice of C70 variety had effected in increased productivity and post-harvest quality of rice. Nadjilom et al (2020) reported significant increase in tiller production due to AMF treatment in two African paddy verities viz., Tox-728-1 and Madjitolngar. Working on resource allocation and grain yield as altered by AMF inoculation, Zhang et al (2015) found that AMF inoculation markedly increased biomass allocation to shoots.…”

Mitigation of Salinity and Drought with Soil Amendments for Sustainable of Rice Production

“…A mixture of phosphorus gypsum and manure can reduce soil salinity [18]. The use of mycorrhiza can increase the growth of rice plants under environmental stress conditions [19]. Rice plants also have the ability to reduce salinity levels.…”