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📍 Dohar & Nawabganj, Dhaka  •  BARI Circulating Tray System with 1,000L Padma Reservoir Tank  •  Case Study #7

Dohar & Nawabganj, Dhaka: Expatriate Entrepreneurs Build a 5,200-Plant Circulating Tray & Padma Reservoir Polyhouse

Dohar & Nawabganj, Dhaka: Expatriate Entrepreneurs Build a 5,200-Plant Circulating Tray & Padma Reservoir Polyhouse
📸 Real Field Photograph: A 1,000-liter Padma plastic reservoir tank connected via PVC plumbing to circulating hydroponic trays inside a UV polyhouse.

📊 Case Study Technical & Economic Profile

📍 Location (Upazila & District) Dohar & Nawabganj, Dhaka, Bangladesh
⚙️ Hydroponic System Used BARI Circulating Tray System with 1,000L Padma Reservoir Tank
🌱 Primary Crops Cultivated Romaine Lettuce, Cherry Tomato, Sweet Pepper & Strawberry
🧪 Nutrient & EC/pH Regime EC 1.8–2.4 dS/m • Automated pH 6.0
💰 Yield & Economic Impact ৳14.5 Lakh Annual Gross Revenue • Full ROI in 14 Months

1. Regional Context & Agricultural Challenge

Returning expatriates in Dohar and Nawabganj wanted to invest in high-value commercial agriculture near Dhaka, but seasonal Padma river flooding and heavy clay soil limited year-round horticulture.

2. Technical Implementation & BARI Protocol Applied

The entrepreneurs installed a 3,500 sq ft UV-stabilized polyhouse equipped with raised galvanized circulating trays connected to a 1,000-liter overhead and underground Padma plastic reservoir tank, circulating BARI Stock A & B solution for 6 hours daily.

3. Harvest Results, Economic Impact & Grower Outcome

With 5,200 plant sites operating 10 cycles of leafy greens and 2 cycles of cherry tomatoes per year, the farm supplies premium outlets in Dhanmondi and Gulshan, achieving full capital payback in 14 months.

🇧🇩 Key Takeaway for Bangladeshi Growers:

This verified case study from Dohar & Nawabganj, Dhaka demonstrates how adapting BARI Stock Solution A & B and localized soilless structures solves real regional climate and soil constraints while delivering strong commercial returns in Bangladesh.

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