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Pesticide Dosage Calculator

Calculate precise pesticide dosage, water requirements, and application schedule for effective crop protection

Pesticide Information

Pesticide Type

Select the type of pesticide you want to use

Pesticide Name

Common insecticides available in market

Recommended Dose (2 ml)

Dosage as per product label recommendation

Custom Water Volume (0 liters) - Optional

Leave at 0 to use recommended water volume based on spray method

Field Information

Land Area (1 acre)

Total area to be sprayed with pesticide

Spray Method

Different methods require different water volumes

Application Details: 🐛 Insecticide

Cypermethrin 10% EC • 1 acre • Manual Sprayer

Pesticide Requirements

Per Application

323.76 ml

Cypermethrin 10% EC

💧 Water Required

162 L

🔄 Total Sprays

Total Season Requirements

Complete Season

647.52 ml

Total pesticide for 2 applications

Total Water

324 L

Coverage

1 acre

Cost Estimate

Total Season Cost

₹3,238

For 2 applications on 1 acre

Per Application

₹1,619

Per acre

₹3,238

Safety Information

⚠️ Pre-Harvest Interval

7 Days

Minimum waiting period before harvest

🚫 Do not harvest crops within 7 days of last spray

Application Overview

Application distribution and cost breakdown per spray

Spraying Schedule

Quick Summary

Pesticide:🐛 Insecticide

Area:1 acre

Per Application:323.76 ml

Total Cost:₹3,238

How We Calculate Pesticide Dosage Requirements

⚠️ Safety Precautions

• Wear protective clothing (mask, gloves, boots)

• Spray during early morning or late evening

• Avoid spraying on windy days

• Keep away from children and livestock

• Do not eat, drink or smoke during spraying

• Wash hands and face thoroughly after spraying

• Dispose empty containers safely

• Store pesticides in original containers

• Observe 7-day waiting period before harvest

• Use clean water for mixing

• Calibrate sprayer before use

• Avoid contamination of water bodies

🧪 Mixing Instructions

1. Fill spray tank half with clean water

2. Add 323.76 ml of pesticide

3. Stir thoroughly

4. Add remaining water to fill the tank

5. Mix well before spraying

6. Use within 24 hours of preparation

7. Do not mix with other pesticides unless recommended

8. Maintain constant agitation during spraying

How Pesticide Dosage Is Calculated

This calculator converts a product label's recommended dose into the exact quantity of pesticide and water you need for your field size, spray method and number of applications - helping farmers avoid both under-dosing (poor pest control) and over-dosing (wasted product, crop damage, residue risk).

Water Volume by Spray Method

Water requirement is based on hectares sprayed and equipment: manual sprayers use about 400 litres/hectare, power sprayers about 300 litres/hectare, and tractor-mounted sprayers about 250 litres/hectare, since better equipment applies water more precisely with less volume.

Pesticide Quantity Formula

Per-litre dose: Pesticide = Dose (ml or gm/litre) × Total water (litres)
Per-hectare dose: Pesticide = Dose (ml, gm or kg/hectare) × Area (hectares)

Number of Sprays & Pre-Harvest Interval

Insecticides typically need 2 sprays per season, fungicides 3, herbicides 1, and bio-pesticides 3, each timed to crop growth stages. The Pre-Harvest Interval (PHI) - 7 days for insecticides, 5 for fungicides, 14 for herbicides, 0 for bio-pesticides - is the minimum wait before it is safe to harvest.

Pesticide Dosage Calculator FAQs

How do I convert a 'ml per litre' dose into total pesticide needed for my field?

Multiply the recommended dose (ml or gm per litre) by the total water volume your sprayer will use for the field, which itself depends on your spray method and field size - the calculator does this conversion automatically once you select your spray method and area.

How much water do I need per acre for spraying?

It depends on your sprayer: manual sprayers typically use about 400 litres/hectare (roughly 162 litres/acre), power sprayers about 300 litres/hectare, and tractor-mounted sprayers about 250 litres/hectare.

What is the Pre-Harvest Interval and why does it matter?

The Pre-Harvest Interval (PHI) is the minimum number of days you must wait after the last pesticide spray before harvesting the crop, ensuring pesticide residues break down to safe levels - it ranges from 0 days for bio-pesticides to 14 days for some herbicides.

How many times should I spray pesticide in a season?

This depends on pesticide type: insecticides are typically applied twice per season, fungicides three times, herbicides once (post-emergence), and bio-pesticides three times, each at specific crop growth stages listed in the spraying schedule.

What safety precautions should I follow when spraying pesticides?

Always wear protective clothing (mask, gloves, boots), spray during early morning or evening, avoid windy days, keep children and livestock away, wash thoroughly after spraying, and strictly observe the pre-harvest interval before harvesting.