Seed Treatment With Trichoderma and Chemicals to Improve Physiological and Sanitary Quality of Wheat Cultivars1

Abstract

Seed treatment with fungi of the genus Trichoderma spp. provides several benefits, including plant growth promotion, stress tolerance, and pathogenic fungi control. Moreover, to avoid inadequate doses and unnecessary costs, these treatments must be applied in proper amounts. However, no study has evaluated their applicability in wheat seeds. This study aimed to determine the most efficient dose of Trichoderma-based products applied as a seed treatment for improving the physiological and sanitary quality of the wheat cultivars TBIO ‘Toruk’ and TBIO ‘Sossego’, besides comparing the performance of biological and chemical agents. Two biological treatments (Trichoderma asperellum SF 04 and Trichoderma harzianum IBLF006) were applied at 0 (control), 5 × 10 11 , 1 × 10 12 , 1.5 × 10 12 , and 2 × 10 12 colony-forming units (CFU) 100 kg–1 seed. Two chemical treatments (carboxin + thiram and pyraclostrobin + thiophanate-methyl + fipronil) were applied at the manufacturers’ recommended doses. Seed germination, shoot and root lengths, seedling dry matter, and sanitary quality were analyzed under laboratory conditions, while seedling emergence, shoot length, and shoot dry matter were analyzed under greenhouse conditions. The optimal dose for wheat seed treatment with T. asperellum SF 04 and T. harzianum IBLF006 was 2 × 10 12 CFU 100 kg–1 seed. When comparing biological and chemical products, our findings indicate that both options are adequate for managing wheat diseases and providing seedling growth via seed treatment.

Journey of Trichoderma from Pilot Scale to Mass Production: A Review

“…The biological potency of T. viride talc-based formulation (1% w/w) was found effective against FOC (Fusarium oxysproum f.sp ciceri), which caused wilt of chickpea and also improved the physiological parameters of the crop [200]. In a study by Couto et al (2021), wheat seeds were primed with two distinct strains of Trichoderma, T. harzianum, and T. asperellum (2 × 10 12 CFU 100 kg −1 seed). Couto et al (2021) revealed that antagonist boosts the percentage of seedling emergence, root and shoot lengths, and shoot dry matter under greenhouse conditions [243].…”

“…In a study by Couto et al (2021), wheat seeds were primed with two distinct strains of Trichoderma, T. harzianum, and T. asperellum (2 × 10 12 CFU 100 kg −1 seed). Couto et al (2021) revealed that antagonist boosts the percentage of seedling emergence, root and shoot lengths, and shoot dry matter under greenhouse conditions [243]. In another study, three antagonists, namely, T. koningii, T. viride, T. asperelum, and T. reseii, were used as bio slurry for seed treatment of peanut crops.…”

AgroReg: main regression models in agricultural sciences implemented as an R Package

“…with three (npar="LL.3"), four (npar="LL.4"), or five (npar="LL.5) log( ))Fungicide dose-response(Noel et al, 2018), Tomato brown rugose fruit virus (ToBRFV) progress in tomato cultivars(González-Concha et al, 2021) with four (npar="BC.4") or five parameters (npar="BC.5") response(Schabenberger et al, 1999), Trichoderma asperellum doses in wheat seeds(Couto et al, 2021) -Streibig with four (npar="CRS.4") or five (npar="CRS.5") parameters ) log( ))…”