ISHS Acta Horticulturae 1009: I World Congress on the Use of Biostimulants in Agriculture
EFFECTIVENESS OF A PLANT-DERIVED PROTEIN HYDROLYSATE TO IMPROVE CROP PERFORMANCES UNDER DIFFERENT GROWING CONDITIONS |
| Authors: | G. Colla, E. Svecová, M. Cardarelli, Y. Rouphael, H. Reynaud, R. Canaguier, B. Planques |
| Keywords: | biostimulants, Lactuca sativa L., nutrient solution, SPAD index, Zea mays L. |
| DOI: | 10.17660/ActaHortic.2013.1009.21 |
| Abstract:
The aim of the current work was to determine whether the use of a commercial plant-derived protein hydrolysate (‘Trainer’) could improve the growth and nitrogen uptake of maize and lettuce grown in a floating system using full strength and reduced nutrient solution concentrations (100 and 10%, respectively) (Experiment 2). In Experiment 1, ‘Trainer’ was applied to the maize roots at the following concentrations 0, 0.25, 0.50 and 2.5 ml L-1, whereas in Experiment 2, two concentrations (0, and 2.5 ml L-1) of ‘Trainer’ were used as foliar spray. Increasing ‘Trainer’ concentration from 0 to 2.5 ml L-1 significantly increased the plant height, shoot dry biomass, SPAD index and leaf nitrogen of maize, whereas an opposite trend was observed for the root-to-shoot ratio. In Experiment 2, at reduced solution concentration (10% of standard solution), weekly foliar applications of ‘Trainer’ at 2.5 ml L-1 increased the fresh weight biomass, SPAD index and leaf nitrogen in lettuce by 50, 11 and 11%, respectively. Thus the application of biostimulants could be considered as a good production strategy for obtaining high growth and yields of valuable crops with lower impact on the environment. | |
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