Chilli Crop Monitoring & Pest Management Solutions | Fyllo

Commercial chilli (mirchi) cultivation is one of the most profitable yet volatile agricultural ventures in India. Concentrated across the major production belts of Andhra Pradesh (Guntur, Prakasam), Telangana (Khammam, Warangal), Karnataka (Byadgi, Haveri), and Maharashtra (Nagpur, Amravati), chilli farming requires heavy investments in seed, water, and crop protection. Because of the crop's long duration (6 to 8 months) and continuous harvesting cycles, any lapse in management can wipe out a farmer's entire season's earnings.

In recent years, traditional crop management practices have proved insufficient against shifting climate patterns. Today's chilli growers face a combination of destructive pests, viral pathogens, soil degradation, and excessive chemical costs:

• Invasive Thrips (Scirtothrips dorsalis and Thrips parvispinus): The sudden emergence of invasive black thrips has devastated millions of acres of chilli. Thrips feed on young leaves, flowers, and tender shoots, causing the leaves to curl upwards, dry out, and drop. They ruin flower buds, preventing fruit set and leaving brown scars on the pods.
• Yellow Mites (Polyphagotarsonemus latus): Mites thrive in warm, humid microclimates, feeding on the undersides of chilli leaves. Their saliva contains toxins that cause leaves to curl downwards, turn dark green, thicken, and take on a brittle, "leathery" texture.
• Chilli Leaf Curl Virus (ChiLCV): This destructive viral pathogen causes severe stunting of the plant, upward leaf curling, puckering, and reduction in leaf size. Affected plants fail to produce marketable fruits. ChiLCV is transmitted by whiteflies, making early vector management critical.
• Fruit Rot & Anthracnose (Colletotrichum capsici): Fungal fruit rot ruins chilli pods just before harvest. Warm, wet weather causes circular black spots to develop on mature pods, which spread rapidly and turn the chillis soft and unmarketable.
• Aphids & Sucking Pests: Aphids colonize fresh foliage and excrete a sticky substance called honeydew. This honeydew attracts sooty mold, which blocks sunlight and reduces photosynthesis. Aphids also act as vectors for several viral strains.
• Excessive Chemical Dependency: Fearing crop loss, chilli farmers often spray broad-spectrum chemical pesticides every 4 to 6 days. This calendar-based spraying increases production costs (exceeding ₹30,000 per acre), kills beneficial predatory insects, increases pest resistance, and leaves pesticide residues that fail export and quality standards.
• Unpredictable Weather Volatility: Unseasonal rain, sudden heatwaves, and humidity spikes disrupt traditional calendar schedules. Without local weather forecasts, farmers cannot time their sprays or irrigation, leaving crops vulnerable.

To protect their investment, chilli growers need real-time data from their own plots. Relying on general regional forecasts is no longer enough.

Fyllo provides full visibility into your chilli crop by combining ground-level hardware sensors with cloud-based machine learning models. Instead of using generic data from regional weather stations miles away, Fyllo tracks the exact microclimate and soil conditions of your specific plot.

The system uses two connected devices: the Fyllo Kairo Weather Station and the Fyllo Nero Pulse Soil Sensor (along with the Nero Infinity system).

Fyllo's system monitors these critical variables at regular intervals:

• Canopy Temperature & Relative Humidity: Tracked directly inside the plant canopy to measure pest activity and pathogen germination risks.
• Leaf Wetness Duration: Measures how long moisture remains on leaves, which is the key trigger for fungal fruit rot and anthracnose spores.
• Rainfall Accumulation: High-resolution rain gauges measure precipitation, alerting growers to spray wash-off risks and soil moisture changes.
• Soil Moisture at Multiple Depths: Tracked at active root zones (usually 15 cm and 30 cm) to show water movement and prevent root rot.
• Soil Electrical Conductivity (EC): Measures salt concentration in the soil to guide fertigation schedules.
• Vapor Pressure Deficit (VPD): Measures the drying power of the air, showing if the chilli plant is transpiring normally or if dry air is causing flower drop.
• Delta T & Wind Speed: Calculates the relationship between dry-bulb and wet-bulb temperatures to identify the best time to spray.

All sensor data is sent via cellular networks to Fyllo's cloud servers. There, Dharti AI processes the readings to generate simple, crop-stage-specific advisories that are sent directly to the grower's phone.

Thrips and mites do not appear suddenly. Their reproduction, egg-laying, and population growth are driven by temperature, humidity, and wind patterns in the crop canopy.

Traditional farming reacts to pests only after leaves begin to curl or turn brown. By then, the population is already established, and the pests have caused permanent damage to flowers and new shoots. To combat this, farmers often use heavy chemical sprays, which leads to pest resistance and high costs.

Fyllo changes this by offering a preventative pest prediction system. By monitoring microclimatic conditions, Fyllo warns you of pest pressure before symptoms become visible:

Predicting these risk windows early allows chilli growers to use targeted, low-residue options rather than heavy chemical sprays. This reduces pesticide costs, protects beneficial insects, and helps meet export compliance standards.

Chilli Leaf Curl Virus (ChiLCV) is one of the most destructive diseases in chilli farming. Once a plant is infected, there is no chemical cure. The virus halts the plant's growth, curls the leaves, and stops fruit development. The only way to manage leaf curl virus is to prevent it by controlling the insect vector that transmits it: the whitefly (Bemisia tabaci).

Whiteflies are tiny sucking pests that feed on plant sap and transmit the virus from infected plants to healthy ones. Their activity, mating, and movement depend on weather conditions:

• Warm, Humid Weather: Whitefly populations multiply rapidly when temperatures stay between 26°C and 32°C and relative humidity is high.
• Low Wind Conditions: Whiteflies are weak fliers. In strong winds, they cannot move between plants, but in calm conditions, they spread easily.
• Weed Hosts: Post-rain periods trigger weed growth, which serves as a breeding ground for whiteflies before they move to your chilli crop.

Fyllo helps manage this by tracking canopy temperature, humidity, and wind patterns to calculate a Whitefly Activity Index. When the system detects conditions that favor whitefly movement, it sends an early warning to your phone.

This early warning allows you to take preventative action before the virus spreads:

By focusing on the vector during these high-risk windows, farmers can prevent Leaf Curl Virus outbreaks, saving their crop and reducing chemical costs.

Many farmers do not realize that when they spray is just as important as what chemical they use. Spraying under the wrong weather conditions leads to wasted chemicals, poor pest control, and leaf burn.

Pesticide efficacy depends on two key weather factors: Delta T and Wind Speed.

Delta T is the difference between dry-bulb and wet-bulb temperatures. It indicates the rate of evaporation and leaf-cooling capacity.

• Low Delta T (Below 2): Indicates high humidity and low temperatures. In these conditions, spray droplets do not dry. They run off the leaves onto the ground, wasting chemicals and polluting the soil.
• High Delta T (Above 8–10): Indicates hot, dry air. Droplets evaporate before they can settle on the leaf surface. This causes the chemicals to crystallize on the leaves, which can burn the foliage and fails to control pests.
• High Wind Speed (Above 10–12 km/h): Strong winds carry the spray droplets away from the target plants, wasting chemicals and risking damage to adjacent crops.

Fyllo Kairo measures these canopy conditions in real time, calculating dry-bulb temperature, wet-bulb temperature, relative humidity, and wind speed. The app then displays clear, color-coded spray windows:

Following these spray window recommendations helps chilli growers reduce chemical waste by 30-40%, saving money and improving crop protection.

Chilli plants have a shallow, fibrous root system. They are highly sensitive to both waterlogging and drought stress, requiring careful water management.

Traditional, calendar-based irrigation often leads to problems:

• Over-irrigation: Keeping soil wet deprives roots of oxygen, leading to root rot (Phytophthora capsici), damping-off, flower drop, and reduced pungency (Capsaicin levels).
• Under-irrigation: Water stress during flowering causes flowers and young pods to drop, reducing yields and causing stunted fruit growth.
• Fertigation & Salt Buildup: Chillis require high nutrients (NPK, Calcium, Boron) for crop growth. However, applying fertilizer without knowing soil conditions raises soil Electrical Conductivity (EC). This salt buildup burns root tips, blocking water and nutrient uptake.

Fyllo's Nero Pulse and Nero Infinity sensors monitor soil moisture at multiple root depths (typically 15 cm and 30 cm) and soil EC in real time.

Instead of guessing, the app displays a soil moisture depletion curve. It alerts you when the root zone drops below the lower threshold (telling you to turn on the drip system) and when it reaches the upper saturation limit (telling you to stop watering).

The system also tracks soil EC. When EC levels rise too high, Dharti AI recommends a clean water flush to wash away accumulated salts. This keeps the root zone healthy, prevents nutrient locks, and ensures the plant can absorb nutrients efficiently.

Precision farming is an investment that delivers clear financial returns. By replacing calendar-based decisions with real-time data, chilli growers can reduce input costs and improve crop quality.

Data collected from Fyllo chilli farms across Guntur, Khammam, Haveri, and Nagpur shows these average results:

For an average chilli plot, reducing chemical sprays and fertilizer saves ₹8,000 to ₹12,000 per acre, per season. Combined with a 15–25% increase in premium-quality yield, growers see a net profit increase of ₹20,000 to ₹35,000 per acre. This means the system can pay for itself within a single crop cycle.