Effect of Foliar Application of Boron Fertilizer on the Yield and Quality of Blueberry

PurposeTo study the effect of foliar application of boron fertilizer on the yield and quality of blueberries.

MethodThrough field trials, study the effects of six boron fertilizer application amounts (0, 0.15%, 0.30%, 0.45%, 0.60% and 0.75%) on the yield per plant, fruit vertical and horizontal diameter, fruit shape index, single fruit quality, fruit firmness, soluble solids, titratable acid, soluble solids to acidity ratio, anthocyanin and vitamin C content.

ResultsThe high-level boron fertilizer treatment reduced the yield and quality of blueberries. The proper concentration of boron fertilizer could improve blueberry plant yield and blueberry fruit quality. Among them, 0.30% boron fertilizer treatment had the best effect, compared with 0% boron fertilizer (CK) treatment, plant yield increased by 7.67%, fruit horizontal diameter increased by 1.05%, vertical diameter increased by 1.16%, and single fruit quality increased by 6.67%; fruit hardness increased by 4.53%, soluble solid content increased by 1.31%, titratable acid decreased by 14.94%, solid acid ratio increased by 18.72%, anthocyanin content and vitamin C content increased by 6.62% and 13.43%, respectively.

ConclusionIn the blueberry planting and production, 0.30% boron fertilizer can be sprayed twice from the bud to the initial flowering stage and the fruit expansion stage of blueberries to meet the boron nutrition demand of blueberry trees.