Manganese Sulfate FAQ
1. What are the directions for application for Manganese Sulfate?
Broadcast 20-60 lbs. per acre pre-plant or at planting.
For banded or side-dress applications, use 10- 30 lbs. per acre.
For improved results, apply in combination with at least 50 lb. Ammonium Sulfate per acre.
Foliar Applications: Apply to actively growing plants just before full leaf expansion for best results.
Thorough coverage and wetting are needed for optimum foliar spray results. Adjust application gallonage for equipment and/or crop coverage. DO NOT apply to foliage when plants are suffering from moisture or heat stress.
DO NOT apply to deciduous tree crops during bloom. Solutions of Greenway Biotech, Inc Manganese Sulfate - Powder may be prepared for dilute sprays according to nutritional need and the following ratios of product-to-diluent.
Nutritional Maintenance . . . . . . . . . . . . . . 1 lb. / 100 gals.
Mild Deficiency . . . . . . . . . . . . . . . . . . . . 1-2 lbs. / 100 gals.
Severe Deficiency . . . . . . . . . . . . . . . . . . . 3 lbs. / 100 gals
Note: Change pound to tablespoon for 1 gallon of water.
2. How much Manganese Sulfate do I put around palm trees?
Small Palms: Use 1/2 to 1 pound per tree
Medium Palms: Use 1 to 3 pounds per tree
Large Palms: Use 3 to 6 pounds per tree
Note: Water thoroughly after applying Manganese Sulfate.
3. What is the percentage of Manganese and Sulfur in Manganese Sulfate? Why do different brands percentages vary from 31% to 99%?
Greenway Biotech Manganese Sulfate contains 31% Manganese and 18% Sulfur.
Percentage of fertilizers never add up to be 100% and the remaining percentage is water in most cases (sometimes it is a carrier for specialty fertilizers such as 20-20-20 or 20-5-5).
Also, high percentages such as 99% or 99.9% usually refer to the purity of the product and not the percentage of guaranteed analysis.
For example, in this case, our Manganese Sulfate is 99% pure but it only contains 31% Manganese and 18% Sulfur with the remaining percentage being water.
4. What is the frequency of use recommended as a foliar spray, on king & queen palms with severe deficiency on fronds "fizzle top"?
We recommend applying once every 4-6 weeks. However, if you don't see any improvements after two weeks then we recommend increasing your frequency to once every 2 weeks until you see improvements.