Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XXV, Issue 1
Written by Roxana HOROIAȘ, Marius BECHERIȚU, Cristian CIOINEAG, Paul BOROVINĂ, Carmen GAIDĂU, Mihaela NICULESCU
In 2020, nine new biostimulators for maize crop, with foliar application, have been created and the testing process started. All these biostimulators are based on protein additives, respectively hydrolyzed keratin and collagen of animal origin, obtained from residues left after the skins tanning process. The tested products have been applied in 2 phases (3- 4 and 7-8 leaves) and in 2 graduations (2.5 and 5.0 l/ha). In maize crop, in successive experiments in the laboratory and in research fields, two biometric indicators have been chosen, namely chlorophyll content index (CCI) and plants height. Each time the measurements have been made 5 days after the foliar application of the biostimulators. After performing both foliar treatments with biostimulators, it has been found that both chlorophyll content index (CCI) and plants height are significantly influenced by some of the products tested (increases of up to 100% in chlorophyll and 10- 15% in plant height), compared to control plot (untreated). By correlating the results of these indicators with those of yields, it will be possible to choose the products with the best efficiency, with optimal characteristics for maize and which will go further in the testing process.
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