Colonización temprana de hongos micorrícicos arbusculares en trigo con aplicación de productos naturales en un Andisol de La Araucanía

Abstract

In a Vilcún series soil of La Araucanía Region was established a crop rotation wheat (Triticum aestivum L.) variety Crac-Baer using raps as preculture (Brassica napus L.).The aim of the study was to determine underfield conditions, the effect on the application of three natural products (NP): Fosfobio (phosphate solubilizing bacteria); Myconate (formononetin) and Natural Green (calcium carbonate). At 44 days after sowing (DAS), 63 DAS and 77 DAS, plant parameters and early mycorrhizal parameters as entry points (EP), frequency (%F), intensity (%M), and colonized root biomass (BRC) were evaluated. The experimental design was a Latin square with four replicates per treatment corresponded to 16 units of 12 m2. At 44 DAS, the results show that early colonization with application of Myconate, the EP and %F increased compared to control. With the application of PN, it increased mycorrhizal intensity, at 63 DAS increase with the application of Natural Green, whilst at 77 DAS, was highest with Fosfobio, compared to control. Also, this PN, at 77 DAS, significantly increased the BRC, over the rest of PN. From the results, it is concluded that there is a beneficial effect of mycorrhization HMA in wheat due to the application of these PN. Finally, these studies are pioneers in the field of sustainability in agroecosystems helping to elucidate the relationships established between the beneficial microorganisms in the rhizosphere.