Articles
LIFE ALGAR-BBE – Microalgae with aromatic plants as biostimulants with biocide effect
Article number
1445_25
Pages
177 – 184
Language
English
Abstract
This work is part of the LIFE ALGAR-BBE project and is based on the field validation under real conditions in industrial tomato of safe and sustainable formulations of natural origin, with biostimulant capacity and biocidal action, developed in the project itself from microalgae, aromatic plant extracts, olive residues (olive pits) and residual Spirulina biomass after extraction of the pigment phycociana.
The main objective of LIFE ALGAR-BBE (LIFE18 ENV/ES/000518 Project) is to mitigate the adverse effects on the environment and human health of chemical pesticides currently used on crops.
ENDESA, CTAEX and NEOALGAE carried out different actions before its application in the field, from the production of microalgae, obtaining extracts of aromatic species and the study of the biocidal capacity of extracts in vitro, which allowed the selection of the most effective species, the formulation, preparation of the biostimulant, evaluation of the biocidal capacity of the formulations in vitro and determination of their phytotoxicity.
Then, dosage trials, application methods and studies with reduction of fertiliser units were carried out in the field, leading to the selection of a formulation and three application methods, finally making it possible to eliminate the application of chemical pesticides from farm schedules.
The trials were duplicated in Spain and Portugal, establishing in each area a trial with four theses in one hectare: formulated via foliar at 3 L ha‑1, formulated via drip at 5 L ha‑1, combination of the formulated via foliar and drip at the mentioned doses and the control without formulated and the usual chemical pesticide treatments in the area according to the pests and diseases detected.
The analysis of results showed an increase in productivity in applications with biofertilizers via foliar and via foliar plus drip between 7,600 and 38,000 kg ha‑1, being always higher in foliar applications only.
The main objective of LIFE ALGAR-BBE (LIFE18 ENV/ES/000518 Project) is to mitigate the adverse effects on the environment and human health of chemical pesticides currently used on crops.
ENDESA, CTAEX and NEOALGAE carried out different actions before its application in the field, from the production of microalgae, obtaining extracts of aromatic species and the study of the biocidal capacity of extracts in vitro, which allowed the selection of the most effective species, the formulation, preparation of the biostimulant, evaluation of the biocidal capacity of the formulations in vitro and determination of their phytotoxicity.
Then, dosage trials, application methods and studies with reduction of fertiliser units were carried out in the field, leading to the selection of a formulation and three application methods, finally making it possible to eliminate the application of chemical pesticides from farm schedules.
The trials were duplicated in Spain and Portugal, establishing in each area a trial with four theses in one hectare: formulated via foliar at 3 L ha‑1, formulated via drip at 5 L ha‑1, combination of the formulated via foliar and drip at the mentioned doses and the control without formulated and the usual chemical pesticide treatments in the area according to the pests and diseases detected.
The analysis of results showed an increase in productivity in applications with biofertilizers via foliar and via foliar plus drip between 7,600 and 38,000 kg ha‑1, being always higher in foliar applications only.
Authors
L. Zajara, A. Sánchez, J.I. Gutiérrez-Cabanillas, J. Gil, L.M. Muñoz-Reja, M. Álvarez, E. Ordiales
Keywords
microalgae, processing tomato, aromatic plant extracts, chemical pesticides
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