Aug 2026· International Journal of Plant & Soil Science· Vol 38, pp. 658-668· 0 citations
Abstract
Background: In Côte d’Ivoire, cassava (Manihot esculenta Crantz) is cultivated throughout the country and represents an important source of income and food security. However, its production commonly involves chemical inputs that may contribute to declining soil fertility.
Aims: This study evaluated the effects of Rhizophagus irregularis and Trichoderma sp. on cassava growth and yield.
Place and Duration of Study: The study was conducted in two stages: a two-month in vivo cultivation phase at the Ecology Research Centre in Abidjan, southern Côte d’Ivoire, followed by a 10-month field phase in Azaguié, south-eastern Côte d’Ivoire.
Methodology: The Yacé and TMS30572 cultivars were grown in vivo and under field conditions and inoculated at planting with R. irregularis (RI) and Trichoderma sp. (TRI). The fungi were applied separately and in combination (RI + TRI). Under field conditions, NPK (10-18-18) fertiliser served as the positive control for yield evaluation.
Results: After two months, stem diameter, plant height, number of leaves, and leaf area were enhanced by RI and RI + TRI, whereas the effect of TRI varied with the plant organ and cultivar. For each cultivar, mycorrhizal colonisation intensity and frequency did not differ significantly between the RI and RI + TRI treatments, confirming the mycotrophic response of cassava. The RI, NPK, and RI + TRI treatments produced statistically comparable yields within each cultivar. For Yacé, yields were 18.56 t/ha with RI, 18.87 t/ha with NPK, and 19.07 t/ha with RI + TRI. The corresponding yields for TMS30572 were 28.76, 28.96, and 29.22 t/ha, respectively.
Conclusion: Under the tested conditions, RI alone and RI + TRI produced cassava yields comparable to those obtained with NPK fertiliser and therefore showed potential for supporting more sustainable cassava production.
Cocoa tree (Theobroma cacao L.) plays a strategic role in Côte d’Ivoire’s economy and social life. However, the production of vigorous seedlings in nurseries is hampered by low nutrient availability in the soil and plant pathogens. This study aims to improve cocoa seedlings in nurseries through the use of a biostimulant based on Trichoderma sp. Isolates of Trichoderma sp. were obtained from the rhizosphere of cocoa trees in the localities of Agboville and Yamoussoukro. These fungal strains were characterised morphologically and their effects on the vegetative growth of cocoa seedlings were assessed. Twenty-five Trichoderma isolates were obtained and grouped into seven morphotypes. The effects of these isolates were assessed in terms of plant height, leaf length and width, as well as stem base diameter and number of leaves, over a 90-day period. The results show that inoculation with Trichoderma significantly improves all the parameters studied compared with the control plants. Treatments T3, T5 and T7 performed best, with a particularly marked response for T3. These results confirm the potential of Trichoderma sp. as a biofertiliser for improving the vigour of cocoa seedlings in nurseries.
Yao Wilfried, Koffi Hervé, Ouattara Bognan Winnie Miyasi et al.· Scholars Academic Journal of...· 0 citations
Scanning electron micrographs of Sclerotium rolfsii paired with effective Trichoderma and Bacillus isolates showed swollen hyphae with cell-wall damage, providing clear evidence of antagonistic interactions caused by volatile compounds produced by B. amyloliquefaciens and T. harzianum.
A. A. Khan, V. Bhuvaneswari, P. Anisha et al.· Asian Research Journal of Ag...· 0 citations
Beans represent an important food source throughout the world, being a staple in diet due to their ease of cultivation and management. In the North and Northeast of Brazil, the consumption of cowpeas (Vigna unguiculata L. Walp) is very significant. Through this work, sought to demonstrate the effect of coinoculation on cowpea using Azospirillum brasilense and Rhizobium tropici in second crop cultivation in the western region of Bahia. The experimental design was in randomized blocks with four treatments and four replications.The experiment was carried out in the field, using the Pingo de Ouro landrace variety with the following treatments: T1 without inoculant, T2 with Rhizobium tropici, T3 with Azospirillum brasilense and T4 with both. The variables of quantity and weight of nodules, root length and weight (cm), weight of fresh leaves (g), weight of dry leaves (g) and stem weight (g) were analyzed in V5 and R1, as well as such as the analysis of plant tissue in V5 and R1, and bromatological analysis of harvested grains.
Bruna Luiza Bedoni Italiano, Davi Ferreira De Amorim, Suely Xavier De Brito Silva et al.· International Journal of Adv...· 0 citations
This study aims to determine the effect of the interaction between the application of Trichoderma solid formula biopesticide applied to the soil and through canopy spraying on the growth and health of vegetative phase cayenne pepper (Capsicum frutescens) plants. This study was conducted from September to December 2024 in Pacet, Pasinan Hamlet, Cepokolimo Village, at an altitude of 450 meters above sea level. This field study was designed as a factorial Randomized Block Design. The first factor was the application of solid biofertilizer (soil treatment), which consisted of three levels: no biofertilizer application but using complete chemical fertilizer; soil treatment at planting or starting from sowing; and soil treatment one month after planting. The second factor was the application of liquid Trichoderma biofertilizer. The observation variables were length increase (cm), leaf number increase, average time of first flowering (days), branch increase, and plant health. The interaction effect of biopesticide application through soil treatment had a significant effect on plant health with a disease symptom intensity of 9.38% compared to the control of 16.67%. The interaction effect on plant growth was not significant.
Azarine Sade Devitasari, S. Sutarman· Deméter· 0 citations
Microbial inoculants such as Trichoderma have been proposed as sustainable tools to improve seedling quality in coffee nurseries; however, their effectiveness may vary according to formulation and genotype. This study evaluated three treatments: a solid Trichoderma formulation (1 kg m−3 of substrate) based on a multispecies consortium (T. harzianum, T. asperellum, and T. viride; 5 × 109 conidia g−1), a liquid formulation of T. harzianum (1 × 108 CFU mL−1; 1 L m−3 of substrate), and a non-inoculated control, using three Coffea arabica varieties (Catimor, Marsellesa, and Gran Colombia) under controlled nursery conditions. A linear mixed model was applied, considering variety and inoculant type as fixed effects and replicates as random effects. The results show that the biostimulant response is strongly modulated by the variety × inoculant interaction. The solid formulation was superior in promoting the expansion of the photosynthetic apparatus, increasing leaf area by 24.6%. In turn, the liquid formulation optimized structural vigor, increasing stem diameter by 17.3% and reducing slenderness by 13.1%. Inoculation reduced the lignification index by 10.4%, favoring dynamic vegetative growth. These improvements were integrated into the Dickson Quality Index, which reached values of 0.41–0.70, greatly exceeding the critical threshold of 0.20 for medium- to high-quality seedlings. It is concluded that Trichoderma acts as a physiological compensator that harmonizes plant architecture, although its efficacy depends on specific compatibility with the genotype, which is essential for ensuring the successful establishment of coffee plants under field conditions.
Alina Camacho-Villalobos, L. P. Amaringo-Córdova, Tatiana Mildred Ucañay-Ayllón et al.· Plants· 0 citations
Aim of study: To evaluate the effect of inoculating Pinus teocote Schiede ex Schltdl. & Cham. plants, a neotropical pine species highly resilient to stress conditions, with two edible ectomycorrhizal mushrooms, Laccaria proxima (Boud.) Pat. and Suillus pungens Thiers & A.H.Sm., on their growth and physiological quality. The plants were grown in different environmentally friendly substrate combinations. Area of study: Bioassays were conducted in the greenhouses of the Colegio de Postgraduados in Texcoco, Mexico. Material and methods: The influence of L. proxima and S. pungens on P. teocote was assessed through growth and physiological parameters using three distinct substrate formulations, two of which incorporated mixtures of sawdust and compost. The evaluated variables included plant biomass, photosynthesis, transpiration, chlorophyll a, b, and total chlorophyll content, as well as carotenoids and ectomycorrhizal colonization, measured 570 days after sowing. Main results: High ectomycorrhizal colonization, exceeding 84%, was recorded in the plants grown in sawdust and compost mixtures. Additionally, increases in biomass and physiological quality were observed in these plants compared to non-inoculated plants. Depending on the substrate mixtures evaluated, the inoculation with S. pungens produced higher transpiration and chlorophyll a, b, total chlorophyll, and carotenoid content than that with L. proxima. Research highlights: It was demonstrated that the production of ectomycorrhizal Pinus teocote plants in greenhouse, with high morphophysiological quality and elevated mycorrhization rates, is feasible when using environmentally friendly substrates.
M. Martínez-Reyes, Karla I. Luciano-Dorado, J. L. Barragán-Soriano et al.· Forest Systems· 0 citations
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