CROP NUTRITION
Peaches.
Plan by growth stage.
Explore a seasonal NABTA product example for mature peaches, with growth-stage timing, stage quantities and separate application amounts.
Planning example for agronomic review. These calculations use stated assumptions and are not field-validated NABTA recommendations. Adjust for block tests, crop load, water nutrients, salinity and irrigation capacity before field use. Use current product labels.
Mature-acre rates do not apply to young plantings. Missing information is identified in each program. No yield guarantee or UC endorsement is implied.
Peaches · early harvestView growth stages, NABTA rates & application timing
Illustrative feeding program · agronomic review required
Example block: early harvest May–Jun; mature trees. Mature commercial planting with zero assumed soil, water or other nutrient credits.
Seasonal fertilizer nitrogenPotassium rate pending
Seasonal potassium budget91.9 lb Ca/ac
Calcium supplied by CALTRATE
How to read this schedule: bold amounts are total product pounds per acre for the entire stage. Divide them across the separate applications shown. Dates are approximate; use actual crop stage. All rates shown are for root-zone fertigation, not foliar spraying.
| Growth stage / timing | NABTA CALTRATE 15.5-0-0 + Ca19 | NABTA SOP 0-0-52 |
|---|---|---|
| Dormancy / bloomWinter to early spring | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
| Spring growth / fruit setMar–Apr | 193.5 lb/acStage total: 7 separate applications × 27.6 lb/ac each | Rate pendingSet the potassium budget from crop and test results. |
| Harvest periodMay–Jun | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
| Postharvest growthJun–Jul; active leaves | 290.3 lb/acStage total: 10 separate applications × 29.0 lb/ac each | Rate pendingSet the potassium budget from crop and test results. |
| Late summerReview vigor and leaf test | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
| Leaf fall / winterNo routine soil N | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
Assumptions & adjustments
- 75 lb N/ac is a selected example inside the UC compilation range 50–100; adjust for field credits and vigor.
- 40% spring and 60% active postharvest summer is a proposed implementation of UC early-peach timing.
- K quantity is unresolved. Blank K inputs and n.a. outputs are intentional; do not read them as zero crop demand.
- This quantified nitrogen schedule is incomplete as a whole nutrient program. Potassium quantities remain pending; no rate has been borrowed from another crop.
- No routine phosphorus or micronutrient dose is included. These examples assume adequate phosphorus; other nutrients require diagnostic evidence.
- Application counts are arithmetic subdivisions using 30 lb CALTRATE/ac and 20 lb SOP/ac as maximum example event sizes. Confirm current label directions, irrigation frequency, injection capacity, EC and calcium loading. Do not add irrigation solely to fit the schedule.
Product compatibility: apply CALTRATE separately from SOP, MKP, LIB and other phosphate or sulfate solutions, with appropriate flushing. Confirm the current California registration and label for SOP before purchase or use; its current status has not been verified for this example.
Research basis: UC / CDFA crop nutrition reference. UC nitrogen-rate compilation. Product analyses: CALTRATE label reference · SOP label reference. These references do not imply UC endorsement of NABTA products.
Print / Save PDFDiscuss Your Peaches · early harvest ProgramPeaches · mid / late harvestView growth stages, NABTA rates & application timing
Illustrative feeding program · agronomic review required
Example block: mid/late harvest Jul–Sep; mature trees. Mature commercial planting with zero assumed soil, water or other nutrient credits.
Seasonal fertilizer nitrogenPotassium rate pending
Seasonal potassium budget91.9 lb Ca/ac
Calcium supplied by CALTRATE
How to read this schedule: bold amounts are total product pounds per acre for the entire stage. Divide them across the separate applications shown. Dates are approximate; use actual crop stage. All rates shown are for root-zone fertigation, not foliar spraying.
| Growth stage / timing | NABTA CALTRATE 15.5-0-0 + Ca19 | NABTA SOP 0-0-52 |
|---|---|---|
| Dormancy / bloomWinter to early spring | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
| Spring growth / fruit setMar–May | 290.3 lb/acStage total: 10 separate applications × 29.0 lb/ac each | Rate pendingSet the potassium budget from crop and test results. |
| Fruit developmentJun to before late harvest | 193.5 lb/acStage total: 7 separate applications × 27.6 lb/ac each | Rate pendingSet the potassium budget from crop and test results. |
| HarvestJul–Sep; cultivar dependent | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
| Postharvest assessmentNo automatic additional dose | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
| Leaf fall / winterNo routine soil N | No routine application0 lb/ac in this example | Rate pendingSet the potassium budget from crop and test results. |
Assumptions & adjustments
- 75 lb N/ac is a selected example inside the UC 50–100 range. The 60% spring share fits UC 1/2–2/3 guidance.
- The remaining 40% is placed in summer before harvest here. This timing split requires local cultivar review.
- K quantity is unresolved. This is a quantified seasonal N program with a K calculation slot, not a complete NPK prescription.
- This quantified nitrogen schedule is incomplete as a whole nutrient program. Potassium quantities remain pending; no rate has been borrowed from another crop.
- No routine phosphorus or micronutrient dose is included. These examples assume adequate phosphorus; other nutrients require diagnostic evidence.
- Application counts are arithmetic subdivisions using 30 lb CALTRATE/ac and 20 lb SOP/ac as maximum example event sizes. Confirm current label directions, irrigation frequency, injection capacity, EC and calcium loading. Do not add irrigation solely to fit the schedule.
Product compatibility: apply CALTRATE separately from SOP, MKP, LIB and other phosphate or sulfate solutions, with appropriate flushing. Confirm the current California registration and label for SOP before purchase or use; its current status has not been verified for this example.
Research basis: UC / CDFA crop nutrition reference. UC nitrogen-rate compilation. Product analyses: CALTRATE label reference · SOP label reference. These references do not imply UC endorsement of NABTA products.
Print / Save PDFDiscuss Your Peaches · mid / late harvest ProgramPlan for your own block.
Include crop and variety, acreage, planting age, expected yield, irrigation method and recent test results. Ask about current product supply or a specialty blend.
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