PHIT PK
Highly Concentrated Potassium Phosphonate for Systemic Crop Defence and P–K Nutrition
PHIT PK is a stabilised crystalline powder containing 96% potassium phosphonate, equivalent to 58% phosphorus pentoxide (P₂O₅) and 38% potassium oxide (K₂O). The formulation dissolves rapidly and homogeneously in water, making it suitable for foliar spraying, fertigation, soil drenching, sprinkler irrigation, hydroponic systems and trunk painting.
Once applied, PHIT PK can be absorbed through leaves, roots and the bark of woody crops. Its systemic movement distributes the active nutrients throughout the plant, including newly developing and sensitive tissues. The product stimulates the production of phytoalexins and supports chitinase activity, helping activate the crop’s natural defence response, strengthen cell walls and improve resistance to attacks associated with oomycete pathogens. It also contributes to higher phosphorus content, increased biomass and foliar area, improved fruit firmness, higher soluble sugar levels, better fruit size and increased yield potential.
Composition and Guaranteed Analysis
Composition
%w/w
Citrus essential oils (Limonene)
7,00
Inert ingredients
93,00
| Composition | %w/w |
|---|---|
| Potassium Phosphonate | 96.0 |
| Phosphorus (P₂O₅) | 58.0 |
| Potassium (K₂O) | 38.0 |
Origin and Certifications
PHIT PK is presented as a European-origin agricultural input and is available in professional bag formats for use in commercial crop-production programmes. The product is manufactured as a high-concentration, water-soluble and stabilised potassium phosphonate formulation.
The supplied technical datasheet does not identify specific third-party certifications or organic-production approvals. Certification, registration and authorised claims may differ between countries. Users should consult Tangel Agro and the locally approved product documentation before positioning PHIT PK as a fertiliser, biostimulant, plant defence inducer or plant-protection product in a particular market.
Multi-Benefits
PHIT PK provides an integrated combination of nutritional, physiological and crop-protection benefits:
- Supplies highly concentrated phosphorus and potassium.
- Activates the plant’s natural defence mechanisms.
- Stimulates phytoalexin and chitinase production.
- Supports systemic protection of roots, leaves, stems and new tissues.
- Strengthens plant cell walls.
- Helps crops withstand oomycete-related disease pressure.
- Supports biomass production and leaf-area development.
- Contributes to higher soluble sugar content.
- Improves fruit firmness and post-harvest quality potential.
- Supports fruit sizing and overall crop yield.
- Offers multiple foliar, soil and trunk-application possibilities.
Key Benefits
Systemic Activity
PHIT PK is readily absorbed through foliage, roots and bark. Its upward and downward systemic movement helps distribute the formulation to active growing points and other sensitive plant tissues.
Natural Defence Activation
The formulation stimulates the production of phytoalexins and supports chitinase activity, reinforcing the crop’s own defence response against pathogen pressure.
Concentrated P–K Nutrition
With 58% P₂O₅ and 38% K₂O, PHIT PK supplies two essential macronutrients involved in energy transfer, root activity, water regulation, fruit development and quality.
Stronger Plant Structures
By supporting cell-wall strengthening, PHIT PK contributes to firmer tissues, improved plant integrity and greater resilience under challenging growing conditions.
Yield and Quality Support
Regular preventive applications can support biomass, foliar development, soluble sugar accumulation, fruit firmness, fruit size and final yield.
Flexible Application
The product can be used by foliar spray, fertigation, drenching, sprinkler irrigation, hydroponic application and trunk painting, depending on crop requirements.
Technical Advantages
- Very high concentration: 96% w/w potassium phosphonate.
- Crystalline formulation: concentrated powder with efficient storage and handling.
- Fully water-soluble: dissolves rapidly and evenly in the spray or fertigation tank.
- Stabilised product: designed to maintain homogeneous application.
- Bidirectional systemic movement: translocation towards both upper and lower plant tissues.
- Multiple absorption pathways: uptake through leaves, roots and tree bark.
- Preventive positioning: suitable for planned programmes before severe disease development.
- Broad crop versatility: applicable to fruit trees, vegetables, berries, vines, ornamentals and turf.
- Multiple application systems: compatible with common foliar and irrigation-based methods.
- Combined physiological action: supports crop nutrition, defence activation and quality development.
Dosage & applications
| CROPS | ASSOCIATES | MAXIMUM Nº OF TREATMENTS | LAST MOMENT OF APPLICATION | SPRAYING EQUIPMENT |
|---|---|---|---|---|
| Citrus, avocado and top fruit | 250 g/hL by high-volume spray; 600 g/hL by mistblower; 5–7 kg/ha by fertigation; 300 g/L for trunk painting | 3 preventive treatments per season. For top fruit, 1–2 applications at pre-blossom and/or petal fall. Up to 3 trunk treatments in severe cases | At the beginning of spring, summer and autumn | High-volume foliar spray, mistblower, drip irrigation or trunk painting |
| Strawberries | 2.5–5 kg/ha by drip irrigation or 250 g/hL by foliar spray | 2–3 fertigation treatments or 3–4 foliar treatments | From root establishment to flowering by fertigation; from flowering until the end of harvest by foliar application | Drip irrigation or foliar spray |
| Vineyard and table grapes | 500 g/hL for vineyards; 250 g/hL for table grapes | Not specified; repeat at approximately 15-day intervals | From flowering to ripening | Mistblower or foliar spray |
| Lettuce and leafy crops | 2.5 kg/ha | 2 treatments | First application 7–10 days after transplanting; second application 15 days later | Foliar spray |
| Onions | 1.5–2.5 kg/ha | 3 treatments | At the three-true-leaf stage, 15 days later and again after a further 15–21 days | Foliar spray |
| Conifer hedges | 250 g/hL by foliar spray or 10 g per linear metre by soil application | 4 monthly treatments | From spring to mid-summer | Foliar spray, drip irrigation or soil drench |
| Tomatoes and cucurbits | 150–250 g/hL | Not specified; repeat every 15 days | From flowering until the middle or end of harvest | Foliar spray |
| Peppers | 2.5 kg/ha | Not specified; repeat every 15–21 days | From one week after transplanting until harvest | Drip irrigation or soil drench |
| Turf and golf courses | 0.75–1 kg/1,000 m² | Monthly applications | From the beginning of spring until mid-autumn | Foliar spray or sprinkler irrigation |
CROPS
ASSOCIATES
MAXIMUM Nº OF TREATMENTS
LAST MOMENT OF APPLICATION
SPRAYING EQUIPMENT
All crops
All approved agrochemicals
Follow the conditions established for the use of the associated agrochemical.
Follow the conditions established for the use of the associated agrochemical.
Suitable for use in various application techniques: Full coverage application, low volume concentrate, spray, pivot, and spray.
Vegetative nutrition
Authorized uses, rate and times of application
| CROPS | PRODUCT TYPES | ADJUVANT FUNCTION | WETTA FINAL CONCENTRATION |
|---|---|---|---|
| Water-soluble potassium phosphonate P–K fertilizer | P and K nutrition, natural defence activation and support against oomycete-related disease pressure | 250–600 g/hL foliar; 5–7 kg/ha by fertigation; 300 g/L for trunk painting | |
| Water-soluble potassium phosphonate P–K fertilizer | Root-zone support, natural defence activation and crop-quality improvement | 250 g/hL foliar or 2.5–5 kg/ha by fertigation | |
| Water-soluble potassium phosphonate P–K fertilizer | Systemic defence support, tissue strengthening and fruit-quality improvement | 500 g/hL for vineyards or 250 g/hL for table grapes | |
| Water-soluble potassium phosphonate P–K fertilizer | Preventive defence activation and support for early crop establishment | 2.5 kg/ha | |
| Water-soluble potassium phosphonate P–K fertilizer | Preventive defence support during vegetative development | 1.5–2.5 kg/ha | |
| Water-soluble potassium phosphonate P–K fertilizer | Systemic defence activation and support for root and foliar health | 250 g/hL foliar or 10 g per linear metre by soil application | |
| Water-soluble potassium phosphonate P–K fertilizer | Natural defence activation, P–K nutrition and yield-quality support | 150–250 g/hL | |
| Water-soluble potassium phosphonate P–K fertilizer | Root-zone defence support and nutritional reinforcement | 2.5 kg/ha | |
| Water-soluble potassium phosphonate P–K fertilizer | Support for turf vigour, tissue strength and natural defence mechanisms | 0.75–1 kg/1,000 m² |
GENERAL DOSE: For foliar applications, use 150–600 g/hL or 1.5–2.5 kg/ha, depending on the crop, canopy volume and application equipment. For fertigation or soil drenching, apply 2.5–7 kg/ha. On turf and golf courses, use 0.75–1 kg per 1,000 m². For conifer hedges, apply 10 g per linear metre, increasing to 20–30 g per tree for large isolated specimens. For trunk painting, prepare a solution at 300 g/L. Apply preferably as a preventive treatment and adjust the frequency according to crop stage, disease pressure and local label requirements.
CROPS
PRODUCT TYPES
ADJUVANT FUNCTION
WETTA FINAL CONCENTRATION
All crops
Insecticides, Fungicides, Acaricides, Herbicides, Protection, Plant Growth Regulators, Foliar Fertilizers, Biostimulants
Dispersion and wetting
0,05-0,15% V/V
Dispersion, Wetting + Anti-rebound, Rewetting, deposition
>0,15->0,25% V/V
Dispersion, wetting + anti-rebound, rewetting, deposition + penetration
0,25 – 0,30% V/V
Features and Properties
PHIT PK is a highly concentrated phosphorus and potassium fertiliser formulated as a stabilised, fully water-soluble crystalline powder. It contains 96.0% w/w potassium phosphonate, providing 58.0% w/w phosphorus expressed as P₂O₅ and 38.0% w/w potassium expressed as K₂O. The product dissolves rapidly and homogeneously in water, which facilitates accurate preparation and uniform distribution through different application systems.
Its systemic behaviour allows upward and downward movement within the plant after uptake through leaves, roots or bark. PHIT PK supports phosphorus and potassium nutrition while stimulating phytoalexin production, chitinase activity and cell-wall strengthening. It can be applied by foliar spray, fertigation, soil drenching, sprinkler irrigation, hydroponic systems or trunk painting, and is available in 1 kg, 2 kg, 5 kg and 20 kg bags.
Recommended Crops and Timing of Application
Fruit Trees
In citrus, avocado and top fruit, position PHIT PK at the beginning of the main seasonal risk periods. Spring, summer and early-autumn treatments help maintain active nutrient supply and defence readiness. In deciduous fruit crops, pre-blossom and petal-fall applications may be incorporated into preventive programmes where locally authorised.
Grapevines and Table Grapes
Begin applications around flowering and repeat during fruit development until ripening. Regular treatment at approximately 15-day intervals supports canopy resilience, bunch development and fruit-quality parameters.
Strawberries
Apply through fertigation during root establishment and before flowering to support root-zone protection. Foliar treatments may then be used from flowering through the harvest period.
Lettuce and Leafy Vegetables
Use shortly after transplanting, when root systems and young leaves are especially vulnerable. A second application approximately two weeks later helps maintain protection during early canopy development.
Onions
Start at the three-true-leaf stage and repeat during early vegetative growth. Preventive positioning is preferable to waiting until visible disease symptoms have become established.
Tomatoes and Cucurbits
Begin foliar applications at flowering and continue throughout the productive cycle at approximately 15-day intervals. Ensure uniform coverage of both upper and lower foliage.
Peppers
Apply through the irrigation system beginning approximately one week after transplanting. Repeat every 15–21 days to support roots and vegetative growth throughout the crop cycle.
Conifers and Ornamental Hedges
Apply during spring and early summer, when vegetative activity and disease risk are increasing. Soil drenching can complement foliar treatments, particularly for large trees or plants with limited foliar access.
Turf and Golf Courses
Use monthly from early spring to mid-autumn. Apply through foliar spraying or sprinkler irrigation and ensure uniform distribution over the treated surface.
FAQ
What is PHIT PK?
PHIT PK is a highly concentrated, water-soluble potassium phosphonate formulation that supplies phosphorus and potassium while supporting the crop’s systemic natural defence response.
What is the composition of PHIT PK?
It contains 96% w/w potassium phosphonate, providing 58% w/w phosphorus expressed as P₂O₅ and 38% w/w potassium expressed as K₂O.
How does PHIT PK work inside the plant?
The formulation is absorbed through leaves, roots and bark. It moves systemically in both upward and downward directions, helping reach active growing tissues throughout the plant.
Does PHIT PK activate plant defences?
Yes. It stimulates phytoalexin production and supports chitinase activity, two mechanisms associated with the plant’s natural response to pathogen pressure.
Is PHIT PK a fertiliser or a fungicide?
The datasheet presents PHIT PK as a P–K fertiliser with fungicidal and disease-control action. Its legal classification depends on the claims, registration and regulations applicable in each country. Only locally authorised claims should appear on labels and commercial materials.
Which pathogens is PHIT PK intended to help manage?
It is principally positioned for preventive programmes involving oomycete-related diseases, including Phytophthora pressure. Crop diagnosis and an integrated management programme are recommended.
Can PHIT PK be applied by fertigation?
Yes. It can be applied through drip irrigation, soil drenching and other suitable irrigation systems, provided the product is fully dissolved and distributed evenly through the active root zone.
Can it be used as a foliar spray?
Yes. Foliar rates generally range from 150 to 600 g/hL, depending on the crop, equipment, canopy volume and programme described in the technical recommendations.
Can PHIT PK be applied to tree trunks?
Yes. The datasheet recommends trunk painting at 300 g/L after cleaning or scraping the target bark area. This use must comply with local product registration and application requirements.
Is PHIT PK suitable for preventive use?
Preventive application is the preferred positioning. Treatments should begin before severe symptoms appear and should be timed according to crop stage, weather conditions and expected disease pressure.
Can PHIT PK be mixed with other products?
Compatibility depends on water quality, tank pH and the characteristics of the other formulation. Conduct a jar test before preparing a full tank and use only combinations permitted by the local label. Avoid mixing products without technical guidance.
What precautions should be taken during application?
Use appropriate personal protective equipment, avoid inhaling dust, maintain continuous agitation during preparation and follow all safety instructions on the label and safety data sheet. Do not exceed the locally authorised dose or number of applications.
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