🌸 Precision Farming in Horticulture

This lesson builds core elective concepts in BSc Agriculture with practical applications and exam-oriented clarity.

---

Precision Farming in Horticulture

Concept

Precision farming in horticulture applies the principle of managing spatial and temporal variability within orchards, vegetable fields, and protected structures to optimize inputs and maximize output quality.

Key Technologies

GPS and GIS Mapping

• Geo-referencing individual trees in orchards for tree-by-tree management
• Soil nutrient maps for variable-rate fertilization
• Yield mapping using weigh-scale equipped harvest bins

Remote Sensing and Drones

• NDVI mapping: Identify stressed zones in orchards from canopy reflectance
• Thermal imaging: Detect water stress before visible wilting
• Multispectral cameras on drones: Monitor nutrient deficiencies and disease hotspots
• Coverage: 10–15 hectares per hour with agricultural drones

Sensor-Based Monitoring

Sensor Type	Parameter	Application
Soil moisture (TDR)	Volumetric water content	Irrigation scheduling
Tensiometer	Soil water potential	Trigger irrigation at set kPa
Weather station	Temperature, RH, rainfall, wind	Disease forecasting
Sap flow sensor	Transpiration rate	Real-time water use
Leaf wetness sensor	Surface moisture duration	Fungal disease prediction

Variable Rate Technology

• Fertigation controllers: Adjust nutrient concentration based on crop stage and EC/pH sensors
• Variable rate sprayers: GPS-guided, canopy-sensing sprayers reduce pesticide use by 30–40%
• Precision pruning: Mechanical pruners with sensor-guided cutting for uniform canopy

Benefits in Horticulture

• Water savings: 30–50% through sensor-triggered irrigation
• Nutrient efficiency: 20–30% fertilizer reduction with VRT fertigation
• Quality improvement: Uniform fruit size, color, and maturity
• Reduced waste: Targeted spraying minimizes chemical residues
• Data-driven decisions: Historical data enables continuous improvement

Challenges

• High initial investment (sensors, drones, software)
• Technical expertise required for data interpretation
• Small farm sizes in India limit economies of scale
• Connectivity issues in rural areas for IoT-based systems

---

Summary Cheat Sheet

Topic	Key takeaway
Main focus	Precision Farming in Horticulture.
Section context	Revise this lesson with the rest of Hi-Tech Horticulture for stronger conceptual continuity.