Azoxystrobin 23% SC Fungicide Uses

Azoxystrobin 23% SC is a broad-spectrum, systemic fungicide from the strobilurin (QoI) chemical group, registered for use in India under the Insecticides Act, 1968, formulated as a suspension concentrate (SC). It is registered for the control of downy mildew, powdery mildew, anthracnose, blight and fruit/leaf spot diseases across fruit and vegetable crops. This page lists its mode of action, key benefits and the complete crop-wise recommended dosage as per the Central Insecticides Board & Registration Committee's (CIB&RC) official list of approved fungicide uses.

Which Problem Is This For? (Symptom Guide)

Not sure whether what you're seeing in the field matches this fungicide's use case? This guide helps match symptoms to this fungicide's approved crop-wise uses.

Mode of Action

Azoxystrobin belongs to the strobilurin (QoI, quinone outside inhibitor) group of fungicides — FRAC Group 11. It works by binding to the cytochrome bc1 complex at the Qo site in fungal mitochondria, blocking electron transfer during respiration. This starves the fungal cell of the energy (ATP) it needs to grow and reproduce, halting spore germination, mycelial growth and sporulation. Azoxystrobin has translaminar and locally systemic movement within the leaf and is also taken up by plant tissue and redistributed acropetally through the xylem, giving it strong protective (preventive) activity and useful early-curative activity against several diseases, along with residual activity on new growth that emerges after spraying.

Features & Benefits

• Broad-spectrum control across several disease groups — downy mildew, powdery mildew, anthracnose, blight and fruit/leaf spot — on a wide range of fruit and vegetable crops from a single fungicide.
• Translaminar and locally systemic movement gives strong protective action plus useful early-curative activity, and continues protecting new growth that emerges after spraying.
• A different mode of action (FRAC Group 11) from the older multi-site and triazole fungicides, making it a useful rotation partner in a resistance-management program.
• Suspension concentrate (SC) formulation that mixes readily with water for uniform tank application.

Recommended Usage of Azoxystrobin 23% SC Fungicide

The table below gives the recommended dose and water volume per acre for each crop and target disease, converted from the official rate published in the Central Insecticides Board & Registration Committee's (CIB&RC) list of approved fungicide uses (Government of India), which is expressed per hectare (1 ha ≈ 2.47 acres). Always spray in the recommended water volume for uniform coverage, and confirm against the current product label before use.

Doses above are converted from the official rate published in the CIB&RC's list of approved fungicide uses (Government of India), which states the rate in grams/ml a.i./formulation per hectare; converted here to a practical per-acre spray-tank quantity (1 ha ≈ 2.47 acres) and rounded. Mango and pomegranate are listed on a tree-size basis rather than a fixed per-acre rate — use the stated percentage concentration and adjust total spray volume to the size of the tree. Always confirm the current dose on your specific product's label, and consult your local agricultural extension office if in doubt.

How to Use

1. Identify your crop and target disease from the table above, and confirm the correct dose per acre and water volume.
2. Shake the container well before use, then measure the required quantity of Azoxystrobin 23% SC and mix it thoroughly into the spray tank water, agitating well before and during spraying.
3. Apply as a fine, uniform spray covering the entire crop canopy, including the underside of leaves where downy mildew and powdery mildew fungal growth typically develops.
4. Begin spraying at the first appearance of disease symptoms, or preventively ahead of expected disease pressure during humid, favourable weather.
5. For tree crops such as mango and pomegranate, adjust the total spray volume to the size of the tree while keeping the stated percentage concentration.
6. Repeat sprays at 10–15 day intervals if disease pressure continues, or as advised by local agricultural extension, and rotate with fungicides from a different FRAC group to manage the risk of resistance.

Precautions & Safety

• Wear appropriate PPE — mask/respirator, gloves, goggles and full-sleeved clothing — while mixing and spraying, and avoid inhaling spray mist.
• Resistance to strobilurin (QoI, FRAC Group 11) fungicides, including azoxystrobin, is a well-documented, real-world concern in several fungal pathogen groups worldwide because of their single-site mode of action; avoid repeated, back-to-back applications on the same crop/disease, and rotate or tank-mix with fungicides from a different resistance group as part of a resistance-management program.
• Follow the recommended dose and concentration strictly — both underdosing (poor disease control and greater risk of resistant pathogen populations developing) and overdosing reduce field performance and increase cost.
• Respect the waiting period (PHI) given in the table above and on the current product label before harvesting the treated crop.
• Store in the original, tightly closed container in a cool, dry place away from direct sunlight, food and feed, and out of reach of children and livestock.
• Wash hands, face and any exposed skin thoroughly with soap and water after handling or spraying, and change out of contaminated clothing before eating, drinking or smoking.

Brand names mentioned on this page are registered trademarks of their respective owners and are referenced here for identification purposes only; FarmMate is not affiliated with or endorsed by these brands. This page is for general information only — always consult your local agricultural extension office and confirm the current product label before use.