BLUEBERRY PROGRAM
Nutrient Programs
Compost and organic materials applied 2 to 6 weeks in advance of season
| Product | 1st Application at Initial Fruit Set | 2nd Application During Fruit Enlargement | 3rd Application During Fruit Enlargement | 4th Application During Fruit Enlargement |
|---|---|---|---|---|
| Explorer™ 16-0-0 | 4 lbs./acre | |||
| Universal™ 0-0-1 | 32-64 fl. oz./acre | *for color if needed 1 gal/acre | ||
| Active™ 5-10-10 | 2-3 lbs./acre | |||
| Microelement™ 1-0-0 | 64 fl. oz./acre | 64 fl. oz./acre | 64 fl. oz./acre | 32 fl. oz./acre |
| Magnesium Sulfate 6% | 1 gal/acre | |||
| Active™ 10-3-10 | 4 lbs./acre | 2-3 lbs./acre | 2 lbs./acre | |
| Calcium 880Plus™ | 32 fl. oz./acre | 32 fl. oz./acre | 32 fl. oz./acre | |
| Nutri-Plus™ 2.5-0-0 | 32 fl. oz./acre | 32 fl. oz./acre | ||
| Citric Acid 12-25% | 1 gal/acre | |||
| Pro K™ 0-0-20 | 32 fl. oz./acre |
Guidelines for Soils
- CEC values or range of 20-30
- Organic matter range of 4% to 6% as a minimum
- pH range 4.5 to 5.5
- Preplant materials should be lower in pH values with the addition of citric acid in multiple treatments: 1-2 gallons per acre as a 12% to 25% solution
- Excess nitrogen may limit fruit production during fruit enlargement stage
Observations
- Tissue samples are required in 30-day intervals.
- Loss of cane production will require adjustments in n: k ratios.
- Increase in fruit sizing needs are derived from calcium applications of 880 plus and rates can be increased by 50%.
Trials