Design of test and imaging tools to evaluate biostimulant effects on plant roots hydroponically grown
Fertilizers based on organic matter such as biostimulants or humic acids, are intended to replace conventional fertilizers by having greater efficiency and being more respectful to the environment. The demand increase of these kinds of products is leading to a new market in fertilizers on new products called biostimulants. These products in fact, are now controlled and regulated in the new European Union legislation of 2019. The objective of this work consisted in the development of a methodology to test in a short-term experiment the efficiency of biostimulants. Several commercial products were separated depending on their nature and were analysed using elemental analysis and Fourier-transform infrared spectroscopy. The products were tested in a crop of Capsicum annuum L. in strictly hydroponic conditions. After 15 days the roots of each plant were analysed by two imaging techniques: WinRhizo root analyzer software and transmission electron microscopy. The preliminary results showed that this test can be used under certain conditions to assess the biostimulant efficiency in terms of morphological changes in the roots.
Antón-Herrero, R., García-Delgado, C., Antón-Herrero, G., Mayans, B., Camacho-Arévalo, R. and Eymar, E. (2021). Design of test and imaging tools to evaluate biostimulant effects on plant roots hydroponically grown. Acta Hortic. 1321, 191-196
hydroponic, Capsicum annuum, biostimulants, root growth, Win Rhizo, TEM