Abstract

LARA-ACOSTA, Danurys; COSTALES-MENENDEZ, Daimy; NAPOLES-GARCIA, María C.  and  FALCON-RODRIGUEZ, Alejandro. Pectimorf^® and Azofert-F^® in the growth of bean plants (Phaseolus vulgaris L.). cultrop [online]. 2019, vol.40, n.4  Epub Dec 01, 2019. ISSN 1819-4087.

In recent years in agriculture, the use of biostimulants has been enhanced to improve productivity and crop quality. The objective of this work was to determine the most effective concentration of a mixture of oligogalacturonides (Pectimorf®) in combination with the inoculant Azofert® (based on rhizobia), in the vegetative development of bean plants (Phaseolus vulgaris L.) Cuba Cueto variety -25-9-N. Two experiments were conducted under controlled conditions, in which two forms of application were evaluated and the concentrations 1, 5, 10, 20, 40 and 100 mg L-1 of Pectimorf® in seeds inoculated with Azofert® at the concentration of 1x109 CFU mL-1, and a dose of 200 mL of Azofert® per 46.04 kg of seed. In the first experiment the seeds were treated with the mixture of Azofert® and Pectimorf® prior to planting and in the second experiment, the foliar spray of Pectimorf® in the vegetative stage V3 was evaluated. Stimulation of nodulation and growth with the joint application of biostimulants depended on the form of application and the concentration of Pectimorf®. Most of the morphoagronomic indicators evaluated were stimulated with foliar spray of Pectimorf® at concentrations of 1, 5 and 100 mg L-1. However, only the radical dry mass was stimulated with 10 mg L-1 Pectimorf® when applied to the inoculated seeds.

Keywords : biostimulants; legumes; development; nodulation.

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