2022-07-01 16:47


Conference: Bucharest University Faculty of Physics 2019 Meeting

Section: Polymer Physics

Influence of asfac bco-4 plant biostimulator solutions on the intensity of the main physiological processes on various green lettuce hybrids

Ana Maria NAE(1), Carmen CÎMPEANU(2), Aurelia DOBRESCU(3), Gheorghița HOZA(3), Mohammed Jasim MOHAMMED(3), Monica Luminița BADEA(3), Daniela PREDOI(1), Simona-Liliana ICONARU(1), Gabriela NEAȚĂ(4), Ştefania Mariana RAITA(5), Gabriel PREDOI(5)

1) National Institute of Materials Physics, Atomistilor Street, No. 405A, P.O. Box MG 07, 077125 Magurele, Romania;

2) Faculty of Land Reclamation and Environmental Engineering, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Blvd, Sector 1, 011464 Bucharest, Romania;

3) Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine, 59 Marasti Blvd., Sector 1, 011464 Bucharest, Romania;

4) Faculty of Agriculture, University of Agronomic Sciences and Veterinary Medicine, 59 Marasti Blvd., Sector 1, 011464 Bucharest, Romania;

5) Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine, 105th Independentei Street, Sector 5, 050097 Bucharest, Romania


ASFAC BCO-4; green lettuce; plant-growth; plant biostimulator

The present paper introduces the results of the analyses regarding the intensity of the main physiological processes of various selected green lettuce hybrids, under the influence of an autochthonous plant biostimulator – ASFAC BCO-4. Green lettuce is a vegetable plant belonging to the Asteraceae family. In Romania, green lettuce is cultivated in pure culture and also in systems of associated and successive crops. Green lettuce is grown mainly for the leaves, which are usually consumed in fresh state. The adhibition of ASFAC solutions at different concentrations to the green lettuce hybrids had a stimulating role in the unfolding of their metabolic reactions. ASFAC is an aqueous solution of organic salts with auxinic, nontoxic action, the only universal biostimulator with applications in agriculture, horticulture viticulture and forestry. It can be applied at any vegetative stage, including during the flowering phase. ASFAC magnifies the resistance of plants to abiotic stress conditions and also favours the increase of the chlorophyll content, causing the photosynthesis process to intensify. It also improves the absorbtion capacity of the basic nutrients added to the crops, helping plant vigor and obtaining a significant incremental production, up to 35% more plants per 1 hectare. The intensity assessment of the photosynthesis, respiration and transpiration was determined with the LC Pro + device, directly into the experimental field, during the time of harvesting. The obtained results were linked to the growth process of the analyzed hybrids and to the weight of their commercial part. As a conclusion, the intensity of physiological processes varied depending on the light intensity, temperature, plant hybrids and ASFAC concentrations applied.

This work was supported by the Romanian Ministry of Research and Innovation through the project PN-III-P1-1.2-PCCDI-2017-0134, Contract Nr. 23PCCDI/2018.