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      Las Algas como alternativa natural para la producción de diferentes cultivos Translated title: Algae as a natural alternative for the production of different crops

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          Abstract

          RESUMEN Las algas han alcanzado un elevado interés por sus aplicaciones en la industria farmacéutica, en la alimentación de peces, animales y el hombre, así como en la agricultura. Tienen potencialidad como bioestimulantes, biofertilizantes y se pueden aplicar de diferentes formas, foliar, enmienda de suelo e imbibición de semillas. Los bioproductos de algas contienen diferentes metabolitos, minerales y fitohormonas que estimulan el crecimiento y rendimiento de las plantas, mejoran las propiedades biológicas del suelo y aumentan la productividad en condiciones de estrés abiótico y biótico. Se pueden utilizar en la producción de diferentes cultivos como una alternativa económica lo que permite lograr una agricultura sustentable. Al utilizarlas disminuye el uso de productos químicos y protege el medio ambiente. Esta revisión tiene como objetivo investigar el papel potencial que tienen las macro y microalgas en el rendimiento y protección de diferentes cultivos.

          Translated abstract

          ABSTRACT Algae have achieved a high interest for their applications in the pharmaceutical, fish; animal and man feed industry as well as in agriculture. They have potential as biostimulants and biofertilizers; they can be applied in different ways such as foliar application, soil amendment and seed imbibition. They can be used in the production of different crops as an economic alternative, which allows for sustainable agriculture. Using them decreases the use of chemicals products and protects the environment. Algae bioproducts contain different metabolites, minerals and phytohormones that stimulate plant growth and yield, improve soil biological properties and increase productivity under conditions of abiotic and biotic stress. The objective of this review is investigate the potential role of macro and microalgae in the yield and protection of different crops.

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          Most cited references71

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          Seaweed Extracts as Biostimulants of Plant Growth and Development

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            Seaweed extracts as biostimulants in horticulture

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              Global nitrogen budgets in cereals: A 50-year assessment for maize, rice, and wheat production systems

              Industrially produced N-fertilizer is essential to the production of cereals that supports current and projected human populations. We constructed a top-down global N budget for maize, rice, and wheat for a 50-year period (1961 to 2010). Cereals harvested a total of 1551 Tg of N, of which 48% was supplied through fertilizer-N and 4% came from net soil depletion. An estimated 48% (737 Tg) of crop N, equal to 29, 38, and 25 kg ha−1 yr−1 for maize, rice, and wheat, respectively, is contributed by sources other than fertilizer- or soil-N. Non-symbiotic N2 fixation appears to be the major source of this N, which is 370 Tg or 24% of total N in the crop, corresponding to 13, 22, and 13 kg ha−1 yr−1 for maize, rice, and wheat, respectively. Manure (217 Tg or 14%) and atmospheric deposition (96 Tg or 6%) are the other sources of N. Crop residues and seed contribute marginally. Our scaling-down approach to estimate the contribution of non-symbiotic N2 fixation is robust because it focuses on global quantities of N in sources and sinks that are easier to estimate, in contrast to estimating N losses per se, because losses are highly soil-, climate-, and crop-specific.
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                Author and article information

                Journal
                ctr
                Cultivos Tropicales
                cultrop
                Ediciones INCA (La Habana, , Cuba )
                0258-5936
                1819-4087
                June 2020
                : 41
                : 2
                : e09
                Affiliations
                [1] San José de las Lajas Mayabeque orgnameInstituto Nacional de Ciencias Agrícolas (INCA) Cuba
                Article
                S0258-59362020000200009 S0258-5936(20)04100200009
                defc2946-52f5-4571-bdc5-e6bd510f2c45

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 09 December 2019
                : 26 February 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 71, Pages: 0
                Product

                SciELO Cuba


                microalgae,biofertilizers,biostimulants,protección,protection,microalgas,biofertilizantes,bioestimulantes

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