Rigid Boost
Rigid Boost strengthens stems and improves lodging and wind resistance. Calcium and magnesium with potassium and phosphorus build structural rigidity so crops stand up to weather and carry their load without collapsing.
Structural-strength fertilizer · Fruit setting and damage response, Anti soft-rot.
- Zero REINo re-entry wait
- Zero PHIHarvest the same day
Pre-harvest and re-entry intervals are restrictions carried on pesticide labels. These products are not pesticides, so neither applies. For comparison, four hours is the shortest re-entry interval a registered pesticide can carry.
Structural-strength supplement from Vegalab Crop Science, powered by Ca, K, P, N + organic acids. Rigid Boost targets Stem strength, lodging resistance, wind tolerance.
A balanced P-K fertilizer with calcium and magnesium, applied through fruit setting and when damage is a concern, to firm fruit and resist soft rot. Calcium is the structural nutrient in the cell wall, cross-linking pectins in the middle lamella so tissue holds its integrity under handling and storage; phosphate and potassium support the energy and water relations that keep it there. Post-harvest shelf life extends.
| Active | Ca, K, P, N + organic acids |
|---|---|
| Targets | Stem strength, lodging resistance, wind tolerance |
| Dilution rate | 1:500 · 2 mL/L (7.6 mL/gal) · 1.5–3.0 L/ha (20.0–40.0 fl oz/acre) |
| Application | Foliar spray, 4–7 applications: 1–2 at fruit setting, 2–3 during damage concerns, 1–2 seven days after an incident |
| Line · Category | Boost · Structural-strength fertilizer |
- Reduces soft rot incidence
- Improves post-harvest firmness
- Extends shelf life
- Strengthens stem and fruit walls
| Nutrient | Content |
|---|---|
| Total Nitrogen (N) | 1.00% |
| Available Phosphate (P2O5) | 4.00% |
| Soluble Potash (K2O) | 4.00% |
| Calcium (Ca) | 1.75% |
| Magnesium (Mg) | 1.00% |
| Boron (B) | 0.25% |
Derived from: Protein hydrolysate · Urea · Boric acid · Calcium chloride · Magnesium sulfate · Potassium phosphate
Contains: Citric acid
Why does stem strength matter?
Lodging - when stems bend or collapse under their own load or in wind and rain - causes direct yield and quality loss and makes harvest harder. Heavily fruiting or tall crops are especially vulnerable. Building structural strength into stems before peak load and weather exposure keeps the crop upright and productive.
How does Rigid Boost work?
Rigid Boost (1-4-4, with Ca 1.75%, Mg 1.00% and B 0.25%) combines calcium and magnesium with potassium, phosphorus and organic acids. Calcium cross-links pectins in the cell wall, while potassium and phosphorus support structural growth and water regulation. The result is improved stem strength, lodging resistance and tolerance to wind, so plants stay standing as they carry fruit and grain.
When and how should it be applied?
- Apply when
- Fruit is setting - 1 to 2 applications
- Then when
- Damage or weather exposure is a concern - 2 to 3 applications
- And again
- Seven days after an incident - 1 to 2 applications
- Method
- Foliar spray
- Rate
- 1:500 · 2 mL/L · 1.5–3.0 L/ha1:500 · 7.6 mL/gal · 20.0–40.0 fl oz/acre · Work out your rate
- Frequency
- 4-7 applications per season, of which 1-2 are made at fruit setting
- Pre-harvest interval
- Zero - harvest the same day
- Re-entry interval
- Zero - no re-entry wait
The label's pattern is event-driven with one stage anchor. Rendered as `event_trigger` with the fruit-setting window stated in the facts footer: see docs/guaranteed-analysis-rebuild.md for why a fourth `stage_plus_trigger` kind was rejected.
Always read and follow the applicable product label.
Apply as a foliar spray through structural growth, building rigidity progressively before the crop faces peak load and weather exposure. Regular applications across the growth phase are more effective than a single late dose, because the reinforcement is laid down over time.
Which crops is it for?
Rigid Boost has been tested on strawberries, tomatoes, stone fruit and berries - crops where stem and structural strength protect both yield and ease of harvest. It is useful wherever heavy fruit load or exposed conditions make collapse a risk.
What roles do calcium and magnesium play?
Calcium provides the structural reinforcement in cell walls and stems, cross-linking pectins in the middle lamella, while magnesium and the balanced nutrients support cell-wall integrity and steady structural growth. Together they make tissue stiffer and more resilient, which is what lets the crop bear its load and resist wind and lodging.
Need a recommendation for your crop or pest?
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Frequently asked questions
What is the application rate for Rigid Boost?
1:500 · 2 mL/L (7.6 mL/gal) · 1.5–3.0 L/ha (20.0–40.0 fl oz/acre) Application: Foliar spray, 4–7 applications: 1–2 at fruit setting, 2–3 during damage concerns, 1–2 seven days after an incident.
Is Rigid Boost suitable for natural or organic programs?
Rigid Boost supplies Ca, K, P, N, Mg + organic acids in a formulation designed to fit low-residue and IPM programs.
What does Rigid Boost do?
Strengthens stems and improves resistance to lodging and wind.
What is the analysis?
N 1.00%, P2O5 4.00%, K2O 4.00%, Ca 1.75%, Mg 1.00%, B 0.25%.
When should I apply it?
Through structural growth, before peak load and weather exposure.
Which crops is it for?
Strawberries, tomatoes, stone fruit and berries.
How does calcium help?
It cross-links pectins in the cell wall, making tissue stiffer and more lodging-resistant.
The evidence behind these actives
Reference pages on the actives this product declares - mode of action, limits and the published sources, written independently of the product listing.
Problems addressed
Supports the root zone where these problems establish. Reference links only - see the label for approved uses.
Pest & disease library
See all plant pests & diseases →
Reference links to identification and management guides. Claims and product availability vary by jurisdiction - always read and follow the product label.
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