The purpose of this study was to evaluate the growth and yield performance of three rice varieties under combinations of organic and mineral fertilisers in Burkina Faso and to identify a suitable organo-mineral formulation. A two-factor split-plot experiment with three replications was conducted using Nerica4, FKR84, and FKR60N. Two fertiliser dosages were assessed together with an absolute control. Dosage D1 comprised 9.4 kg of neutral soil, 600 g of organic manure, 4.5 g of NPK, and 3 g of urea, whereas D2 comprised 9.4 kg of neutral soil, 300 g of organic manure, 9 g of NPK, and 6 g of urea. The evaluated traits were production cycle, plant height, number and length of panicles, 1000-grain weight, theoretical paddy yield, and dry biomass. Fertiliser treatments significantly affected several growth- and yield-related traits, with responses varying among varieties and fertiliser combinations. Dosage D1 was associated with favourable production-cycle responses, particularly for the F6NU, F7NU, and F9NU combinations. Organo-mineral treatments also improved plant height and panicle traits, while the F2, F4, and F8 manures and their mineral-fertiliser combinations generally performed well for yield-related responses. Across the two dosages, D2 produced the more favourable paddy-yield response. These findings indicate that rice varietal performance depends on both fertiliser composition and dosage under the experimental conditions, with combined organic and mineral fertilisation showing potential for improving rice productivity. The results can be applied to guide the selection of promising organo-mineral fertiliser combinations and dosages for rice production in Burkina Faso, while field validation is needed before wider recommendation under farmers' conditions.
Aboubacar Coulibaly, Valentin Stanislas Edgar Traoré, Lucien Kaboré et al.· Journal of Experimental Agri...· 0 citations
Rice yellow mottle virus (RYMV) is one of the most destructive viral diseases limiting rice production in Africa. Identifying genotypes that combine resistance with superior agronomic performance is essential for developing improved cultivars. This study evaluated 61 aromatic rice lines and three reference genotypes differing in RYMV resistance under greenhouse conditions using healthy and mechanically inoculated plants. Agronomic and disease-related traits were analysed by two-way analysis of variance (ANOVA), principal component analysis (PCA), hierarchical clustering on principal components (HCPC), and the Multi-trait Genotype–Ideotype Distance Index (MGIDI). RYMV infection significantly affected all measured traits (P < 0.001), reducing grain yield (65.3%), above-ground biomass (23.6%), plant height (13.6%), panicle length (11.2%), panicle number (13.3%), and thousand-grain weight (16.2%), while increasing spikelet sterility by 208.0%. Significant genotype × health interactions revealed contrasting responses among genotypes. PCA explained 59.0% of the total phenotypic variation and showed that yield-related traits were negatively associated with spikelet sterility and disease severity. HCPC grouped the genotypes into four distinct clusters according to their agronomic performance and disease response. MGIDI identified ten superior genotypes (Remar2, Remar4, Remar11, Remar13, Remar28, RemarGT, K20-26, K20-Germ13, Basmati370, and the highly resistant control TOG5681) that combined high yield potential with reduced disease impact. These genotypes constitute valuable genetic resources for breeding high-yielding, RYMV-resistant aromatic rice cultivars.
Lucien Kaboré, V. Traoré, Aboubié Elisabeth Zongo et al.· Journal of Experimental Agri...· 0 citations
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