INTRODUCTION
Sunflower is one of the key oilseed crops in both Ukraine and the world. While some may think growing sunflowers is straightforward, this crop is actually quite vulnerable to pests and diseases — especially during the stages of bud formation, flowering, and seed filling. Delays in treatment or the use of suboptimal protection strategies can cost farmers between 5% and 20% of their yield.
In this article, we’ll go through all the key growth stages of sunflower, explore the main technological approaches and threats at each stage of cultivation, and most importantly — discover how agrodrones can help preserve yield and boost profitability.
MAIN SECTION
🌱 Crop Biology and Key Vulnerability Stages
According to the BBCH scale, sunflower goes through more than 8 key growth phases, but the most critical in terms of protection are:
🎯 Interim Conclusion: it is during the flowering and seed filling stages that agrodrones become indispensable, as they provide access to tall-growing plants.
🐛 Major Pests and Diseases of Sunflower
🔎 Pests:
-Sunflower longhorn beetle (Migdolus fryanus) — bores into the stem, creates cavities, causes lodging.
-Sunflower broomrape (Orobanche cumana) — a parasitic plant that drains sap from the root and kills the host.
-Cutworms and bollworms (Helicoverpa, Mamestra) — feed on seeds inside the sunflower heads.
-Aphids, thrips — transmit viruses and suck plant sap.
🦠 Diseases:
-Phoma — dark spots on stems, damage to the vascular system.
-Sclerotinia — white mold on the head and stem base, leads to 30–50% yield loss.
-Downy mildew, rust, false powdery mildew — especially prevalent in rainy years.
-Alternaria — affects heads, reduces seed quality.
📌 All these diseases are best managed through preventive treatments, which agrodrones can deliver precisely at the optimal time.
🚁 Advantages of Agrodrones in Sunflower Protection Systems
🧪 AGRONIX Practice (2024):
- DJI Agras T30, T50 — used for fungicide application during the flowering stage (BBCH 60–65).
- 80–90% water savings and optimal canopy coverage.
- Result — 3–4 c/ha yield preserved during active flowering compared to untreated fields.
📋 Example of a Sunflower Protection System with Agrodrones (by growth phases)
* Sulfur application during the seed filling stage (BBCH 71–83) is important because:
🔹 Sulfur is a key micronutrient for oil formation in sunflower seeds.
🔹 At this stage, it:
- Activates the synthesis of amino acids and fats;
- Enhances nitrogen uptake;
- Promotes head filling and increases oil content.
✅ Application of sulfur-based products (e.g., ammonium thiosulfate or elemental sulfur in a tank mix with fungicide) during the seed filling stage is an economically justified practice for improving sunflower yield quality.
🚨 Tank mix preparation requires pH control. Optimal pH is essential for formulation stability when working with low water volumes.
REAL CASES FROM PRACTICE
✅ Farm “Delta Agro”, Mykolaiv region
- 320 ha of sunflower
- Growth stage: BBCH 63 (flowering)
- DJI Agras T30, rate — 12 L/ha
- Spraying with fungicide + biostimulant
- Feedback: “Our neighbor couldn’t enter the field after the rain. We treated on time and preserved our yield potential.”
✅ “Zlahoda Agro”, Poltava region
- 840 ha of sunflower
- Protection system — 4 agrodron applications
- Average yield increase: +4.5 c/ha compared to control
- Protection system cost: 1280 UAH/ha, profit: +5250 UAH/ha
✅ “Blahovishchenka” Farm Enterprise, Zaporizhzhia region
- 500 ha of sunflower
- Insecticide application with agrodrones
- Additional income from preserved yield — 1.9 million UAH
- Farm owner’s feedback: “We calculated the saved yield and found that its value was 1,900,000 UAH. That’s far more than we spent on drone services — and even on transporting the increased harvest.”
💰 Economics: Is It Worth It?
ECONOMIC IMPACT: AGRODRONES AS A HIGH-RETURN INVESTMENT
The use of agrodrones for sunflower protection offers significant economic advantages:
Reduced water and logistics costs: Agrodrones require only 8–12 L/ha of working solution, which is far less than traditional sprayers.
No crop damage: Unlike wheeled machinery, drones don’t trample plants, preserving around 5% of the yield.
Increased yield: Timely and efficient crop protection treatments reduce the risk of losing an additional 3–6 c/ha.
💡At an average sunflower seed price of 25,000 UAH/t, an extra 4 c/ha equals an additional 10,000 UAH/ha in profit.
🚜 WHY AGRODRONES OUTPERFORM WHEELED SPRAYERS ON SUNFLOWER
Sunflower is a tall-growing crop, which creates challenges for traditional machinery, especially during the flowering and seed filling stages. Agrodrones solve these issues:
-Availability in any conditions: Drones can operate after rainfall and on wet soils where wheeled machinery cannot pass.
-Precision spraying: With GPS navigation and high maneuverability, agrodrones ensure uniform coverage even on challenging terrain.
-Eco-friendliness: Minimal use of water and pesticides reduces environmental impact.
🎥 Video: Agrodrones in Action
For a deeper understanding of the practical use of agrodrones, we recommend watching the following videos:
- How are agrodrones transforming agriculture? Honest talk about experience, numbers, and forecasts: An interview with Mykola Cherniak, owner of AGRONIX, about implementing agrodrones in farming.
- All about agrodrones at the ReFarm conference | AGRONIX: A talk by Mykola Cherniak at the ReFarm conference, where he shares real-world drone experience.
🧭 CONCLUSIONS
🌻 Sunflower is a crop where timely treatment can save a significant portion of the potential yield. Throughout the season, various limitations arise for conventional machinery. Agrodrones help minimize these limitations and threats — with precision, speed, timeliness, and no harm to the plants.
🚁 Agrodrones are:
- Flexibility and rapid response
- Precision and minimized losses
- An investment that pays off in 1–1.5 seasons
- A reliable solution for crops at any growth stage
📣 Want to implement effective sunflower protection with agrodrones on your farm? — Contact the representatives of AGRONIX
AGRONIX offers:
DJI Agras drone sales: Official distributor with full service support.
Operator training: Professional pilot education at our own academy.
Agronomic support: Tailored crop protection systems for each farm.
Pesticide application services: High-quality and timely spraying with agrodrones.
For more information about the company and its services, visit the official website: agronix.com.ua
