Agricultural phosphoric acid is one of the important sources of phosphorus in plant nutrition. With appropriate purity and high absorption capability, it holds a special position in the nutritional programs of agricultural crops. This mineral substance plays a vital role not only in root growth, flowering, and plant performance but also in correcting the pH of alkaline soils.
Sepidstan Tejarat Company, as a major importer and supplier of chemical raw materials, provides high-quality agricultural phosphoric acid from reputable brands and also offers the Iranian type from the Razi brand to consumers. For buying and selling various chemical materials, stay connected with Sepidstan Tejarat.
Introduction to Agricultural Phosphoric Acid
H₃PO₄ (phosphoric acid) is one of the most commonly used phosphorus sources in agriculture. The agricultural-grade phosphoric acid is usually available in the market with purity ranging from 50% to 85%. It should be a refined industrial type free from harmful heavy impurities for plants.
Features:
- Rapid and effective supply of phosphorus element to plants
- Decrease in irrigation water or alkaline soil pH
- Assistance in better absorption of micronutrients
- Promotion of root growth and stimulation of flowering
Timing of Use in Agriculture
Using this material at the right time plays a critical role in optimizing plant performance. It is generally recommended during the early growth stages, flowering periods, and post-harvest to replenish consumed elements.
Best Times to Apply:
- Beginning of the growth season: To stimulate root development and better plant establishment.
- Before flowering: To increase flower production capacity and thus enhance fruit yield.
- After harvest: To help plant recovery and store phosphorus for the next season.
In drip irrigation systems, this material can be injected together with irrigation water to increase effectiveness and adjust the pH of the nutrient solution.
Mixing Phosphoric Acid with Urea Fertilizer
A common question among farmers is whether phosphoric acid can be mixed with urea fertilizer.
Short answer: Yes, but with precautions.
Mixing phosphoric acid with urea is often used to simultaneously supply nitrogen and phosphorus, especially useful during early growth stages when plants need both nutrients.
Important Notes for Mixing:
- Add phosphoric acid to water first, then add urea.
- Use the solution on the same day to avoid decreased efficacy.
- Do not use simultaneously with fertilizers incompatible with acids (such as calcium nitrate).
Recommended Application Rates per Hectare
The exact amount depends on the crop type, growth stage, soil analysis, and irrigation system. Generally, the recommended rates are:
| Crop Type | Recommended Rate (liters per hectare) |
|---|---|
| Vegetables & Melons | 20 to 30 liters |
| Fruit Trees (e.g., Pistachio) | 15 to 25 liters |
| Potatoes & Root Crops | 20 to 35 liters |
Note: These are approximate values; soil testing and expert consultation are recommended before application.
Application for Pistachio Trees
Pistachio trees, especially in alkaline and low-phosphorus soils, require high phosphorus supply. Agricultural phosphoric acid is an ideal option for this purpose.
Benefits in Pistachio Orchards:
- Stimulates root growth in early stages
- Increases flowering and fruit set
- Improves micronutrient absorption such as zinc and iron
- Reduces problems caused by calcareous soils
Application at 15 to 25 liters per hectare in spring and autumn as fertigation is recommended.
Application for Potatoes
Potatoes, as a crop with a high phosphorus demand, respond positively to phosphoric acid application.
Benefits for Potatoes:
- Enhances early growth and induces more tuber formation
- Increases photosynthesis efficiency
- Promotes uniform tuber size
- Improves skin color and quality
Recommended application: 20 to 35 liters per hectare from vegetative growth through tuber formation. Mixing with urea during early growth is advised.
Iranian Production by Razi Brand
Alongside imported brands, the Iranian Razi brand produces agricultural phosphoric acid with suitable quality, readily available in the market. This product, with 50% purity and carefully controlled impurities, offers an economical and effective choice for farmers.
Sepidstan Tejarat supplies the Razi brand directly along with other imported brands, guaranteeing analysis and quality.
Agricultural phosphoric acid is one of the most important phosphorus sources in plant nutrition systems. By regulating pH, improving nutrient absorption, and enhancing plant performance, it plays an indispensable role in sustainable agriculture. From pistachio orchards to potato fields, the correct use of this material can increase productivity, quality, and profitability.
If you are looking for reliable direct purchase, Sepidstan Tejarat with its reputable brands is a trustworthy supplier of your chemical raw materials.
For more information and to buy phosphoric acid, stay with us.