Questions and Answers
How many liters of spray solution need to be prepared for a 1.25 hectare rice farm at the seedling stage, if insecticide M is applied at 19 liters per hectare?
What is the concentration in percent of a formulated product that contains 500 g of Methiocarb per kg?
If 18 and 30 sprayer loads are used for the seedling and vegetative stages respectively, how much more insecticide M is needed per hectare at the vegetative stage?
What is the concentration in percent of a spray solution made from a pyrethroid insecticide used at 5 tbsp per 16 liters of water, assuming 1 tbsp equals approximately 15 ml?
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How many kilograms of the formulated product are needed to prepare 50 liters of the spray solution, using the recommendation of 5 tbsp per 16 liters of water?
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What percentage of Insecticide X is the active ingredient imidacloprid if it contains 300 g of the active ingredient per liter of the formulated product?
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What is the concentration of Insecticide Y in parts per million if it has 3% active ingredient?
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How much Furadan 3G is needed for 15,000 m² if 33.3 kg/ha is the recommended application rate?
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If 33.3 kg of Furadan 3G contains 30 g of Carbofuran per kg, how many kilograms of Carbofuran was applied?
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How much Furadan 3G would be applied per plant if there are 75,000 plants on a 15,000 m² farm with an application rate of 33.3 kg?
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How much Confider SL 100 is needed to prepare a 2,500 liters spray solution with a dilution rate of 25 ml/100 L of water?
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If Confider SL 100 is sold in 250 ml bottles, how many bottles are needed for 2.25 liters?
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What is the dilution rate of Sumicidin 3EC mixed at 5 tbsp per 16 liters of water?
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Study Notes
Insecticide Calculations
- Active Ingredient Calculation: For Insecticide X with 300 g active ingredient per liter, the percentage concentration is 30%.
- Concentration in ppm: Insecticide Y with 3% active ingredient translates to 30,000 ppm.
- Application Rate: Furadan 3G requires 33.3 kg/ha for severe corn borer infestations, equating to 49.95 kg for 15,000 m².
- Active Ingredient Content: If using 33.3 kg of Furadan 3G with 30 g Carbofuran/kg, total Carbofuran applied is 1 kg.
- Amount per Plant: For 75,000 plants, applying 33.3 kg per hectare results in approximately 0.44 g per plant.
Dilution and Preparation
- Preparation of Spray Solution: To create 2,500 liters with a 25 ml/100 L dilution rate of Confider SL 100, 625 ml is needed.
- Packaging Needs: For 2.25 liters of Confider SL 100, 9 bottles (250 ml each) must be purchased.
- Cost Calculation: At P750 per 250 ml, total cost for 2.25 liters of Confidor SL 100 is P6,750.
Mixing and Ratios
- Dilution Rate of Sumicidin 3EC: Mixed at 5 tbsp/16 L water represents a dilution ratio of 5:16.
- Percentage in Spray Solution: Sumicidin 3EC at this dilution yields approximately 0.31% concentration in the spray.
Application for Crop Stages
- Spray Solution Volume: For a 1.25 ha rice farm at seeding stage, 380 liters of spray solution is necessary at 19 liters per hectare.
- Insecticide M Requirement: For pest management, if 40 ml per sprayer load is used for seedling stage and 30 ml for vegetative stage, an additional 10 ml is needed per hectare in the vegetative stage.
Concentration of Active Ingredients
- Methiocarb Concentration: In a formulated product with 500 g Methiocarb/kg, the concentration is 50%.
- Pyrethroid Concentration: A preparation with 5% active ingredient at 5 tbsp/16 L of water results in a 0.075% concentration in the mixture.
- Spray Solution Quantity: For a 50-liter spray solution, with the recommendation of using 5 tbsp/16 L, 0.47 kg of formulated product is required.
Seed Treatment
- Insecticide for Seeds: A slurry for treating 1 kg of seeds involves mixing 12.5 ml of Insecticide F, ensuring adequate coverage to assist in pest control.
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Description
Test your knowledge on insecticide calculations with this quiz focused on Crop Protection. Dive into problems involving active ingredients and their percentages. Perfect for students and professionals in agricultural sciences.
