Preharvest application of naphthalene acetic acid and kelpak® improve postharvest quality and phytonutrient contents of sweet pepper

Biostimulant Substances for Sustainable Agriculture: Origin, Operating Mechanisms and Effects on Cucurbits, Leafy Greens, and Nightshade Vegetables Species

“…No quality parameter improvements were recorded when Colla and collaborators [199] applied Ecklonia maxima extract 'Kelpak' at the rate of 3 mL L −1 on greenhouse-grown tomato plants; similar results were obtained by Di Stasio, who similarly tested ANEs 'Rygex' and 'Super Fifty' and only found increases in fruit calcium, potassium, and magnesium contents (31 and 22%, 17 and 45%, and 32%, respectively) and essential amino acids content [178]. Still, SWEs may found utilities at the post-harvest level, as increased fruit firmness retention during cold storage, coupled with a lesser oxidative increase in fruit TSS were recorded in pepper fruits [194,218] Three instances of quality improvements using PH biostimulants on tomato plants were found in the available literature, and in each instance, the 'Trainer' legume-derived PH was employed [198][199][200].…”