Abstract

RIVERA, Adriana Patricia Tofino; MURGAS, Rafael Enrique Carbono; RIOS, Aslenis Emidia Melo  and  MERINI, Luciano José. Effect of glyphosate on microbiota, soil quality and biofortified bean crop in Codazzi, department of Cesar, Colombia. Rev. argent. microbiol. [online]. 2020, vol.52, n.1, pp.61-71. ISSN 0325-7541.  http://dx.doi.org/10.1016/j.ram.2019.01.006.

Strategies aimed at achieving food safety in crops of high nutritional value shouldbe carried out through sustainable agricultural practices aimed at soil conservation, high yieldand food safety. This latter characteristic implies food production without detectable tracesof agrochemicals that threaten health. The objective of this study was to assess the effect ofthe herbicide glyphosate on the chemical and biological fertility of the soil and to determineits residual activity on biofortified bean seeds in Codazzi, Department of Cesar, Colombia. Themethod included a correlational analysis of soil quality, crop yield and residuality in bean grains.The treatments included glyphosate application and synthetic and natural mulches, comparedto manual control. The results showed differences in the response of chemical, microbiologicaland yield indicators between treatments and the initial conditions of the bean rhizosphere. Theuse of the herbicide glyphosate in mulch-free soil generates yield losses of 29% associated witha higher incidence of pests and fungal diseases; in all treatments, no glyphosate residualitywas detected in seeds; however, residuality was detected in other molecules derived frominsecticides associated with the local production system. In conclusion, in plots with high weedpressure by Cyperus rotundus, the use of mulch is recommended as an alternative to maintainbean productivity over time; by offering protection against the effect of the herbicide on boththe root system of the plant and the soil microbiota of the biofortified bean crop.© 2019 Asociaci´on Argentina de Microbiolog´ıa. Published by Elsevier España, S.L.U. This is anopen access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords : Legumes; Herbicides; Rhizospheric activity; Fungal diseases.

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