Cauliflower Harvesting : Ergonomic Case Study

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Overview

In villages around Pune, small‑scale farmers harvest cauliflower by hand, spending hours bent over their fields.

This project combines field observations, ergonomic assessments (RULA, REBA, WERA, QEC, NMQ), and Indian anthropometry to design an ergonomic harvesting tool that:

• Encourages a more upright posture
• Reduces musculoskeletal risk
• Fits the real bodies and routines of Indian farmers

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With two rounds of prototyping and on‑field testing, the tool reduced ergonomic risk scores:

• RULA: 7 → 5
• REBA: 11 → 3
• WERA: 45 → 25 </aside>

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1. Life in the Cauliflower Fields

In a village near Pune, harvesting days start before sunrise.

Farmers walk into the fields with simple tools like khurpi, sickle, and hoe. For 5–6 hours a day during harvest, the pattern repeats:

• Bend deeply towards the soil
• Search for the right curd
• Cut close to the stem
• Lift, carry, repeat

By midday, lower backs ache, knees hurt, and hands feel numb. Yet every curd left in the field is lost income, so the work continues.

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Who this project focuses on

• Small‑scale cauliflower farmers in rural Maharashtra
• Working largely with manual tools and family labor
• With limited access to mechanized harvesters
• Facing repetitive strain and long‑term musculoskeletal discomfort </aside>

2. Problem: When Tools Hurt the Bodies that Use Them

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Core problem

Small‑scale farmers rely on manual tools and awkward postures, leading to MSDs, inefficiencies, and potential crop loss.

Poorly designed tools force stooping, squatting, and twisting, which over time damages back, shoulders, and knees.

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Challenges in simple terms

• Posture: Long hours in bent or squatting postures
• Tools: Khurpi and sickle are sharp, low to the ground, and not tailored to cauliflower stems
• Pain: Farmers report recurring back, shoulder, wrist, and knee pain
• Performance: Cutting is slow and effortful, and sometimes damages the curd

3. Crop and Context: Why Cauliflower?

Cauliflower (Brassica oleracea var. botrytis) is a vital vegetable in India, contributing about 4.7% of total vegetable production.

India is the second‑largest producer globally, with major cultivation in:

• Bihar
• Uttar Pradesh
• Odisha
• West Bengal
• Assam

In and around Pune, suitable climate and soil make cauliflower a common small‑scale crop.

From seedling to harvest

• Seedling preparation: 4–6 weeks
• Sowing: Plowing, compost, ridge making
• Transplanting: Moving healthy seedlings to the field
• Irrigation & weeding: Regular watering and weed removal
• Pest control: Neem and organic pesticides
• Harvesting: Cutting the curd cleanly at the right maturity

Out of all steps, harvesting combines:

precision + force + posture demands — making it an ideal focus for ergonomic redesign.