Scientific Publications

Effect of L-amino acid-based biostimulants on nitrogen use efficiency (NUE) in lettuce plants

June 2022
Bioestimulantes | Scientific articles | Terra-Sorb®
Eloy Navarro-León, Francisco Javier López-Moreno, Elisabet Borda, Cándido Marín, Nuria Sierras, Begoña Blasco and Juan Manuel Ruiz
Department of Plant Physiology, Faculty of Sciences, University of Granada, 18071, Granada, Spain., IFAPA, Institute of Research and Training in Agriculture and Fisheries, Granada, Spain., Plant Health R&D, Bioiberica, S.A.U, Barcelona, Spain.
Journal of the Science of Food and Agriculture 12071

BACKGROUND: Biostimulants are increasingly integrated into production systems with the goal of modifying physiological processes in plants to optimize productivity. Specifically, L-α-amino acid-based biostimulants enhance plant productivity through improved photosynthesis and increased assimilation of essential nutrients such as nitrogen (N). This element is a major component of fertilizers, which usually are applied in excess. Thus, the inefficient use of N fertilizers has generated a serious environmental pollution issue. The use of biostimulants has the potential to address problems related to N fertilization. Therefore, the objective of this study is to analyze whether two biostimulants based on L-α-amino acid (Terra-Sorb® radicular and Terramin® Pro) designed by Bioiberica, S.A.U. company can compensate deficient N fertilization and test its effect on lettuce plants. Growth, photosynthetic, N accumulation, and N use efficiency (NUE) parameters were analyzed on lettuce leaves.

RESULTS: Results showed that regardless of N fertilization, the use of both biostimulants, especially Terramin® Pro, increased biomass production. Moreover, both biostimulants enhanced photosynthetic, NO3 and total N accumulations as well as NUE parameters.

CONCLUSION: Therefore, Terra Sorb® radicular and Terramin® Pro constitute a useful tool for crops development in N-limiting areas, and in intensive agricultural areas

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