Foliar application of microbial and plant based biostimulants increases growth and potassium uptake in almond (Prunus dulcis [Mill.] D. A. Webb)

Frontiers in Plant Science
Sebastian SaaPatrick H Brown

Abstract

The use of biostimulants has become a common practice in agriculture. However, there is little peer-reviewed research on this topic. In this study we tested, under controlled and replicated conditions, the effect of one biostimulant derived from seaweed extraction (Bio-1) and another biostimulant derived from microbial fermentation (Bio-2). This experiment utilized 2-years-old almond plants over two growing seasons in a randomized complete design with a full 2 × 4 factorial structure with two soil potassium treatments (125 μg g(-1) of K vs. 5 μg g(-1)) and four foliar treatments (No spray, Foliar-K, Bio-1, Bio-2). Rubidium was utilized as a surrogate for short-term potassium uptake and plant growth, nutrient concentration, and final plant biomass were evaluated. There was a substantial positive effect of both biostimulant treatments on total shoot leaf area, and significant increases in shoot length and biomass under adequate soil potassium supply with a positive effect of Bio-1 only under low K supply. Rubidium uptake was increased by Bio-1 application an effect that was greater under the low soil K treatment. Though significant beneficial effects of the biostimulants used on plant growth were observed, it is not possible to d...Continue Reading

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Citations

Apr 20, 2016·Frontiers in Plant Science·Giovanni PoveroPrem Warrior
Sep 18, 2015·Frontiers in Plant Science·Patrick Brown, Sebastian Saa
Feb 15, 2019·Journal of the Science of Food and Agriculture·Paula LorenzoHelena Freitas
Feb 17, 2017·Frontiers in Plant Science·Georgia TanouAthanassios Molassiotis
Aug 1, 2015·Journal of the Science of Food and Agriculture·Anna La TorreFederica Caradonia
Dec 11, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Carla PereiraIsabel C F R Ferreira
Oct 28, 2019·Frontiers in Plant Science·Tony TwamleyAngela Feechan
Nov 30, 2018·Frontiers in Plant Science·Salmabi K AssainarZakaria M Solaiman
May 26, 2018·Journal of the Science of Food and Agriculture·Antonios ChrysargyrisNikos Tzortzakis
Dec 4, 2019·Food Chemistry·Enrique Barrajón-CatalánVicente Micol
Feb 16, 2021·Frontiers in Plant Science·Izhar MuhammadFeng Bai Li
Oct 11, 2019·Journal of Agricultural and Food Chemistry·Ivan PanfiliDaniele Del Buono

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