Produção Nacional
Viability and agronomic efficiency of Grammy Crop® (Azospirillum brasilense) applied to Triticum aestivum L. as seed treatment
2024; Servicios Academicos Intercontinentales; Volume: 17; Issue: 51 Linguagem: Inglês
10.55905/rdelosv17.n51-010
ISSN1988-5245
AutoresWilson Story Venâncio, Claudia Cristina Leite Fiori, Bianca Rosini, Bruno Rosini, Vanessa Nathalie Modesto Boratto, Ibraian Valério Borato, Eduardo Gilberto Dallago, Gislaine Martins Slusarz, Robinson Martins Venancio, Angélica Miamoto,
Tópico(s)Crop Yield and Soil Fertility
ResumoBacteria of the genus Azospirillum can colonize root surfaces, enhancing biological nitrogen fixation. This study aimed to assess the viability and agronomic efficiency of the inoculant Grammy Crop® Liquid (Azospirillum brasilense) applied to wheat crops as seed treatment. Four experiments were installed in regions with different edaphoclimatic conditions, namely Lapa, Porto Amazonas, Ponta Grossa, and Palmeira, Paraná State, Brazil. A randomized block design was used, with nine treatments and four replications. Treatments were as follows: untreated control; 50% nitrogen (N) requirement; 100% N requirement; Nitro 1000 (reference treatment); Grammy Crop® Liquid at 50, 100, 150, and 200 mL 40 kg−1 seed; and Grammy Crop® Peat at 100 g 40 kg−1 seed. Root and shoot fresh and dry weights were evaluated at 35 days after emergence, chlorophyll index at stem elongation and heading, and grain yield and N content after harvest. Grammy Crop® Liquid at 150 and 100 mL 40 kg−1 seed increased shoot fresh weight in crops grown in Porto Amazonas and Palmeira, respectively. At all sites, the chlorophyll index was higher in plants treated with Grammy Crop® Liquid. Furthermore, Grammy Crop® Liquid increased grain yield by more than 20% in all experiments. N content was also higher at all sites in plants treated with one of the four rates of Grammy Crop® Liquid. It is concluded that Grammy Crop® contributed to improving wheat development and yield.
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