Evaluation of Biostimulatory Activity of Commercial Formulations on Three Varieties of Chickpea

Abstract

Biostimulants are studied as a possible agricultural practice that anticipates the reproductive stages of chickpeas to avoid their coincidence with high temperatures and hydric stress periods. The effect of several types of biostimulants on different chickpea varieties was analyzed. The Blanco Sinaloa chickpea variety showed opposite patterns with respect to biostimulant effect on germination success and vegetative and radicular development when compared with two other chickpea varieties, namely Amelia, a well-known variety, and IMIDRA10, a recently developed variety. Blanco Sinaloa is cultured under water irrigation conditions, while Amelia and IMIDRA10 are used under rainfed conditions. Blanco Sinaloa and IMIDRA10 are Kabuli-type varieties, while Amelia is Desi-type. All varieties emerged 9 days after the sowing, but Amelia nascence was more abundant at the beginning, on day 9. On day 32, the picture was quite different, since Blanco Sinaloa had germinated 100% in practically all treatments, followed by Amelia and IMIDRA10. There were significant differences between plant lengths among the three varieties, since Blanco Sinaloa is much larger than Amelia and IMIDRA10. Blanco Sinaloa was the only variety in which the plant lengths of biostimulant-impregnated seeds were superior to those of untreated plants; that is, it was the only one that was positively affected by biostimulants. Chickpea seeds should be treated with biostimulants such that they are dry for sowing, because the mechanic seeder only works with dry seeds.

Keywords

• <i>Cicer arietinum</i> L.
• Blanco Sinaloa
• Amelia
• PGPR
• plant growth-promoting rhizobacteria
• <i>Trichoderma</i>