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Philip from Yuma, Az writes

Can I use 0 - 0 - 25 Liquid Potassium Solution as a foliar spray on fruit trees like guava, lychee and mango?

What ratio to water must I use and when in the year is the best time to apply?

Answer:

0-0-25 Liquid Potassium Solution can be applied to turf, ornamentals, trees, crops and hydroponics by both foliar and root feeding methods of application. The product label does list berries and tropical/sub tropical fruits which would include mango, guava and lychee (soapberries) at the rate of 2 to 4 qts per acre (1.5 to 3 fl oz per 1000 sq ft) in a sufficient water volume to thoroughly cover the plants. Berries: Apply prior to bloom. Repeat at fruit set. Repeat every 14 - 21 days until harvest.
Tropical / Sub Tropical Fruits: Apply on new major growth and on successive flushes. Spray monthly until harvest. Do not apply during bloom. We suggest reaching out to the manufacturer directly for product support regarding specific information on applications to your fruit trees and with other questions not addressed on the product label.   Growth Products can be reached by either calling 1-800-648-7626 or by visiting GrowthProducts.com.

Answer last updated on: 07/15/2022

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