3.1 Personal protective equipment

Personal protective equipment (PPE) is clothing and gear worn by a worker to create a barrier between the body and a hazard that cannot be removed completely. In agricultural work, hazards include dusty soil, lime, fertiliser granules, spray chemicals, noisy machines, sharp tools and heavy loads. A farm hand who wears the correct PPE is far less likely to suffer burns, eye injuries, chemical poisoning, hearing loss or crushed feet. Example: a worker at a tea estate who mixes agrochemicals in a store wears gloves, goggles, a mask and boots, so a splash on the hands or face does not become a medical emergency.

3.1.1 Types

PPE is grouped by the part of the body it protects. Choosing the right type starts with identifying the hazard: a splash needs eye and skin cover, dust needs breathing protection, and noise needs hearing protection. The main groups used in soil, crop and workshop work are shown below.

Gloves

Gloves protect the hands, which are the part of the body most often in contact with materials. The material must match the hazard. Nitrile and neoprene resist many chemicals, natural rubber suits general wet work, and leather resists abrasion and thorns but absorbs liquids, so it is not suitable for chemical handling.

Points to consider when selecting gloves:

• Material: Use chemical-resistant gloves for fertilisers and pesticides and leather gloves for fencing wire, stones and thorny material.
• Length of cuff: A long cuff stops liquid running down the wrist and into the glove.
• Fit: A glove that is too loose reduces grip, and one that is too tight tears easily.
• Condition: Cracked, thin or punctured gloves give a false sense of safety and must be discarded.
• Thickness: Thin gloves give better feel for delicate work such as handling seedlings, while thick gloves resist cuts and heavy wear.

Gloves should be removed carefully, turning them inside out so that any contamination stays inside, and the hands must be washed afterwards.

Safety goggles

Safety goggles are sealed eye protectors that fit closely against the face, unlike ordinary spectacles which leave gaps at the sides, top and bottom. They guard against liquid splashes, dust, flying chips and spray drift. Example: a technician at a county soil testing laboratory wears goggles when pouring acid-based reagents so that a splash cannot reach the eyes.

Features of good goggles:

• Impact-resistant lens: The lens should not shatter when struck by a flying stone or metal chip.
• Indirect ventilation: Vents shielded from direct splashes let air in to reduce fogging while still keeping liquids out.
• Adjustable strap: The strap holds the goggles firmly against the face during bending and lifting.
• Anti-fog and scratch-resistant coating: A clear view is needed for safe work, and scratched lenses should be replaced.
• Fit over spectacles: Workers who wear prescription glasses need goggles designed to fit over them.

Contact lenses do not replace goggles. If a chemical enters the eye, the eye must be flushed with clean running water for at least 15 minutes, keeping the eyelids open, and medical help sought.

Safety boots

Safety boots protect the feet and ankles from falling tools, sharp objects, hot or corrosive materials, and slippery or wet surfaces. In farm work they also keep the feet away from soil-borne infection and snake or insect bites. Rubber gumboots are suitable for wet fields, dairy parlours and spraying, while leather boots with a steel or composite toe cap suit workshops, stores and construction work.

Features to check when choosing boots:

• Toe cap: A reinforced toe cap resists crushing from dropped tools, sacks or equipment.
• Sole: A thick, slip-resistant sole grips wet soil and prevents puncture by nails or thorns.
• Ankle support: A high shaft protects the ankle and stops soil and liquid entering from above.
• Material: Rubber and synthetic boots resist chemicals, while untreated leather absorbs liquids and can hold contamination.
• Fit: Boots should allow toe movement and be worn with clean socks to prevent blisters.

Trouser legs should be worn over the boots when working with liquids, so that spills run outside and not into the boot.

Overalls

Overalls are hard-wearing garments that cover the trunk, arms and legs. They protect the skin from soil, dust, grease and chemical splashes, and keep ordinary clothes clean so that contamination is not carried home. Cotton or polycotton overalls are comfortable for general farm and workshop work, while special chemical-resistant overalls are used for spraying or handling concentrated chemicals.

Good practice for overalls:

• Full cover: Sleeves and legs must be long, and the collar and front fastened.
• Fit: Loose, dangling parts can catch in moving machinery, so the overall must be neither baggy nor too tight to allow free movement.
• Colour: Bright colours improve visibility on a busy work site, and light colours make contamination easier to see.
• Washing: Work overalls are washed separately from household clothing.
• Replacement: Overalls soaked with concentrated chemicals must be removed at once and replaced, not worn until the end of the shift.

Dust coat

A dust coat is a light, knee-length, long-sleeved coat worn over ordinary clothes. It is used where the risk is light dust, small spills and staining, rather than heavy chemical exposure. Example: staff in the seed and feed store of a school farm wear dust coats so that grain dust and powders do not settle on their clothes and skin.

Characteristics of a dust coat:

• Fabric: Cotton or polycotton is breathable, easy to wash and not easily damaged by mild chemicals.
• Length and sleeves: The coat reaches the knees and has sleeves to the wrist, giving cover to the arms and upper legs.
• Fastening: Buttons or press studs down the front keep the coat closed during work.
• Pockets: Pockets hold pens, labels and small tools, but should not be used to carry food.
• Stay in the work area: The coat is removed before eating, leaving the work area or going to public places.

Ear muffs

Ear muffs are padded cups held over the ears by a headband. They reduce the level of noise reaching the inner ear, protecting against permanent hearing loss that develops gradually after long exposure to loud sound. Noise levels at or above about 85 dB over a working day are generally treated as harmful. Tractors, grinding mills, chainsaws, generators and water pumps can all exceed this level.

Points on the use of ear muffs:

• Seal: The cushions must sit flat against the head. Hair, hats or spectacle arms can break the seal and reduce protection.
• Noise rating: Muffs are rated for the amount of noise reduction they give, and the choice should match the noise level of the machine.
• Comfort: Muffs worn for long hours must be light enough and not press too hard, otherwise workers remove them.
• Hygiene: Cushions should be wiped regularly and replaced when cracked or hardened.
• Awareness: Workers wearing muffs may not hear warnings, so hand signals and visual cues should be agreed in advance.

Face masks

Face masks protect the nose and mouth from harmful particles, mists and vapours. A simple dust mask filters coarse particles such as soil dust, lime powder and grain dust. A respirator with replaceable filters or cartridges is required for pesticide mist and chemical fumes. A cloth or surgical mask is not designed for chemical protection and must not be used for that purpose.

Guidelines for effective use of masks:

• Right type: Dust masks do not stop chemical vapours, so the mask must be chosen to suit the hazard.
• Close fit: The mask must seal against the face, and facial hair under the sealing edge lets contaminated air leak in.
• Filter condition: A clogged filter makes breathing hard and a saturated cartridge no longer protects, so filters are changed according to the manufacturer's instructions.
• Single use: Disposable masks are thrown away after use and not shared.
• Training: Workers must be shown how to put on, test and remove a respirator correctly.

Care, inspection and storage of PPE

PPE protects only when it is clean, undamaged and correctly stored. Damaged or contaminated equipment can give the wearer a false sense of safety and may itself spread contamination. A regular routine of checking and cleaning keeps equipment effective and extends its life, reducing replacement costs. Example: a dairy cooperative that inspects its gumboots and gloves every week finds cracks before they cause a leak during washing of milking equipment.

Procedure for caring for PPE:

1. Inspect before use: Check each item for cracks, holes, loose straps, worn soles, scratched lenses and clogged filters. Anything faulty is set aside and reported.
2. Wear correctly: Fasten overalls, fit the mask and goggles snugly and place the glove cuffs over or under the sleeves as the task requires.
3. Remove carefully after work: Take off gloves first by turning them inside out, then goggles, overalls and mask, avoiding touching the outer, contaminated surfaces.
4. Clean after use: Rinse gloves, boots and goggles with clean water and mild soap. Wipe ear muff cushions and shake out dust coats and overalls.
5. Wash and dry: Wash overalls and dust coats separately from family clothing and dry equipment fully in the shade, since strong sun can harden and crack rubber.
6. Store properly: Keep PPE in a clean, dry, ventilated cupboard, away from chemical stores, with respirators sealed in a bag to protect the filters.
7. Replace when worn: Discard and replace items that are damaged, expired or heavily contaminated, and record the replacement.

Limitations of PPE

PPE is the last line of defence and not the first. It does not remove the hazard, it only reduces the effect on the wearer, and it works only if it is the right type, fits well and is worn throughout the exposure. For this reason, safe workplaces first try to remove or reduce the hazard, for example by choosing a less harmful product, using guards on machines, or working in well-ventilated areas.

Limitations to remember:

• Dependence on the wearer: PPE fails if it is left off, worn incorrectly or removed for comfort.
• Discomfort: Heat, weight and restricted vision can tire workers, so rest breaks and shade are needed in hot weather.
• Wrong selection: A dust mask used against chemical vapour or cotton gloves used with liquid chemicals give little or no protection.
• Wear and ageing: Rubber hardens, filters saturate and lenses scratch, so protection decreases with time.
• Training need: Workers must understand why and how to use each item, or it will be used poorly.

3.1.2 Uses

PPE is used to reduce the chance and severity of injury or illness when a hazard remains after safer methods, such as good planning, ventilation and guards on machines, have been applied. It is worn whenever a task exposes the body to dust, chemicals, noise, sharp or heavy objects, or infection. Example: on a horticultural export farm, workers who load and spread fertiliser wear gloves, masks and boots so that the product does not touch the skin or enter the lungs.

Main purposes of PPE

• Preventing chemical contact: Gloves, overalls and boots stop fertilisers, lime and pesticides touching the skin, where they can cause irritation, burns or absorption into the body.
• Preventing injury: Boots, gloves and goggles protect against cuts, punctures, crushing and flying fragments during digging, fencing and machine work.
• Protecting breathing: Masks keep dust, spray mist and fumes out of the lungs, reducing coughing, allergy and long-term lung disease.
• Protecting hearing: Ear muffs prevent the gradual hearing loss caused by working near noisy engines and mills.
• Protecting the eyes: Goggles stop splashes and particles reaching the eyes, which are very sensitive and heal slowly.
• Preventing infection: Gloves and boots reduce contact with animal manure, contaminated soil and wet ground where disease organisms live.
• Keeping contamination out of the home: Overalls and dust coats stay at work, so chemicals and dust are not carried on ordinary clothing to the family.

Matching PPE to the task

The table compares common tasks with the PPE normally worn. The hazard in each task decides the protection needed.

Chapter Summary

This chapter began by emphasizing the importance of personal protective equipment and described various types necessary for safely handling soil and fertilizers. It then defined soil fertility and outlined the key characteristics that make soil productive, including the presence of essential micro and macro nutrients. The chapter explored how soil loses fertility through processes such as erosion and nutrient depletion. Different types of fertilizers were discussed, distinguishing between organic and inorganic sources, along with methods for their effective application. Soil amendments were covered next, highlighting the role of fertilizers, agricultural lime, and gypsum in improving soil quality. Finally, the chapter addressed soil conservation measures, focusing on cultural and biological practices that help maintain and restore soil fertility for sustainable agricultural productivity.