Monopotassium Phosphate 0-52-34
NOTE: Depending on your shipping address, we may ship 50 pound items as two 25 pound bags.
Monopotassium Phosphate fertilizer contains 52% Phosphorous and 34% Potassium and is water soluble.
Deciduous Fruits (including apples, pears, cherries, prunes, apricots, peaches, plums and nectarines): Apply 5 to 10 lbs. per acre per application. Apply as pre-bloom and post-bloom sprays.
Note (for pears): When daytime temperatures are expected to exceed 90°F. Do not apply more than 8 lbs. per acre.
- Keep a minimum of 7 days between application.
- Do NOT apply to crops under stress.
- With rising temperatures (a.m.) stop spraying at 84°F.
- Falling temperatures (p.m.) start spraying at 90°F.
- Under certain conditions, including handgun application, Monopotassium Phosphate can cause leaf injury.
- To reduce chances of foliage injury be sure to obtain enough gallonage with dilute sprays to cause runoff (350 GPA).
- Use correct gallonage with concentrate sprays to avoid a runoff and excessive dripping on the tree.
- Be sure to avoid over spraying when treating young or dwarf trees.
- Comments on gallonage are based on spray volume being applied on full size trees.
- Proper spray calibration is important to reduce chances of injury.
Field Crops (Foliar Application):
Alfalfa, Clover: Use 2 to 8 lbs. per acre per application. First application at 6 to 8 inches, repeat applications to new growth after each cutting.
Almonds: Make 3 to 4 applications per season at a rate of 5 to 10 lbs. per acre in sufficient volume for thorough coverage.
Make first application at petal fall and continue at 30 day intervals until hull split.
Beans (including dry, succulent and limas): Use 5 to 10 lbs. per acre. Apply when plant leaves are large enough to absorb a foliar nutrient or from bud set to early bloom.
Carrots, Beets, Sweet Potatoes and Other Vegetable Root Crops: Use 5 to 10 lbs. per acre per application.
Citrus: First, dilute spray. Use 3 to 5 lbs. per 100 gallons, not to exceed a total of 15 lbs. per acre per application.
In concentrate sprays or aerial application, use 5 to 10 lbs. per acre in 15 to 150 gallons per acre.
Grapes: Apply at 3 to 10 lbs. per acre per application when leaves first appear. Repeat application as necessary.
An application pre-bloom and post-bloom are suggested if needed.
Apply 10 lbs. per acre within 30 days of harvest to increase solids.
Strawberries: Apply 3 to 10 lbs. per acre shortly after first blooms appear.
Repeat applications as necessary during growing season to improve berry size and quality.
Hops: Begin application at early season training and continue through the end of bloom period as often as every 7 days.
Corn (Field and Sweet): Use 5 to 10 lbs. per acre per application.
Cotton: Use 5 to 10 lbs. per acre per application as needed, starting at squaring (pre-bloom).
Legumes (peas (dry and succulent), lentils, garbanzos): Apply 2 to 8 lbs. per acre in sufficient water to cover by ground or by air.
Apply when plant leaves are large enough to absorb a foliar nutrient up through mid-bloom stage.
Celery, Cole Crops, and Leafy Vegetables: Use 1 to 2 lbs. per acre per application.
Lettuce: Use 1 to 5 lbs. per acre. Make several applications at intervals of 10 to 14 days starting at thinning or after transplanting.
Use multiple low rates instead of high rate applications.
Melons, Cucumbers, and Other Cucurbits: Use 5 to 10 lbs. per acre per application. Make two or more applications starting just prior to bloom.
Mint: Use 2 to 10 lbs. per acre per application.
Onions (dry and green):
Garlic: Use 5 to 10 lbs. per acre per application.
Pistachios: Make 3 to 4 applications per season at a rate of 5 to 10 lbs. per acre in sufficient volume for thorough coverage.
Make first application immediately post bloom and repeat as necessary until hull split.
Potatoes: Use 5 to 10 lbs. per acre. Apply at initial tuber formation.
Subsequent applications may be made with various fungicide and/ or insecticide cover sprays.
Consult your local Agricultural Consultant for specific recommendations.
Small Grains (wheat, barley, and oats): Use 2 to 6 lbs. per acre in sufficient water to cover by air or by ground.
Apply at tillering, but before early boot stage.
Sugar Beets: Use 5 to 10 lbs. per acre. Apply when leaves are 10” across. Repeat 3 to 4 weeks later.
Tomatoes (Fresh) and Peppers: Use 5 to 10 lbs. per acre per application in a minimum of 20 gallons of water per acre by ground.
Do not exceed 5 lbs. per acre in 10 gallons of water by air.
Two to three applications are advised at two to three week intervals, starting immediately prior to full bloom, two weeks later and finally at early fruiting stage.
Tomatoes (Processing): Apply 2 to 3 applications at 5 to 10 lbs. per acre in a minimum of 20 gallons of water per acre by ground.
Do not exceed 5 lbs. in 10 gallons of water per acre by air.
The first application should be made immediately prior to full bloom, two weeks later and finally at early fruit sizing.
Walnuts: Make 2 to 3 applications in rates of 5 to 10 lbs. per acre in sufficient volume for thorough coverage.
Make first application at an early set and repeat at 3 to 4-week intervals until June 15th.
Related Blog Posts:
- What's the Function of Phosphorus (P) in Plants?
- What's the Function of Potassium (K) in Plants?
- Why Monopotassium Phosphate is a Great Choice for Plant Health
Frequently Asked Questions: