Qualidade nutricional de plântulas de cultivares de trigo submetidas à inoculação com Azospirillum, bioestimulante e triadimenol

Abstract

This study aimed to evaluate the nutritional quality of wheat seedlings subjected to treatments with biostimulant, triadimenol and Azospirillum brasilense. The experimental design was completely randomized, with four replications in a factorial scheme 3 x 8: three wheat cultivars and eight seed treatments. The cultivars used were CD-150, CD-116 and CD-104, and the treatments were a combination of the following: 150 g L-1 of triadimenol (TRI), 90 mg L-1 of kinetin + 50 mg L-1 of gibberellic acid + 50 mg L-1 of indolebutyric acid (KGA), and strains Ab-V5 and Ab-V6 of A. brasilense at the concentration of 2.0 x 108 viable cells mL-1, organized as follows: control, TRI, KGA, AZO, TRI+KGA, TRI+AZO, AZO+KGA and TRI+KGA+AZO. Germination (%), shoot and root dry matter, and the levels of N and K in plant shoot and root were evaluated. The results showed that: TRI, KGA and AZO do not interfere with seed germination of CD-150, CD-116 and CD-104; germination of wheat cultivar CD-104 is greater than of the cultivars CD-150 and CD-116; nutritional quality is affected by the performance of triadimenol in wheat seedlings in both shoot and root, and the isolated use of CGA increases the dry matter portion of the cultivars CD-150, CD-116 and CD-104; treatment KGA+AZO raises the nitrogen levels in the shoot and root in wheat seedlings in the early development of wheat cultivar CD-116.