Discover more product details, including technical features and primary uses of Solubor.
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Get details on chemical and physical specifications.
Explore our field studies to see how Solubor improves crop performance.
Solubor is a highly concentrated sodium borate (Disodium Octaborate Tetrahydrate, Na2B8O13.4H2O). You’ll find no added impurities or ingredients.
20.5% boron content
Particle size of <75 microns
Offers higher concentration of boron than boric acid in solution—0.9% B (w/w) versus 0.6% B (w/w) at room temperature
Solubor DF is a mixture of disodium tetraborate, boric acid, and sodium pentaborate. The chemical composition and physical size of Solubor DF promote rapid dissolution in water.
Solubor DF resources
When you need a boron fertilizer for foliar application, you need to make sure you’re getting Solubor from U.S. Borax.
Solubor is an excellent boron source for inclusion in liquid fertilizers because it is readily soluble and does not react with other components of these fertilizers.
Solubor is highly water soluble, and is commonly applied in foliar sprays. Because the season for the most effective foliar application of boron is short, foliar sprays must be prepared quickly and accurately.
Foliar nutrient sprays are commonly applied to fruit trees. Boron is immobile in most plant tissues so boron may not be readily transported to developing flower buds. Solubor can be effectively applied with dormant oil-insecticide sprays during the dormant stages of most fruit trees.
Corn requires high levels of all nutrients to ensure maximum economic yields. Soybeans, like all legumes, have a high boron requirement.