Introduction

A cashew tree planted today may still be bearing nuts in thirty years. A well-managed coffee plant can stay productive for decades. Crops like these are long-term commitments, and the land they grow on has to stay healthy for just as long. Farming that exhausts the soil, wastes water or relies on heavy chemical use may give quick results, but it leaves the land weaker every year.

We grow cashews and coffee on our own plantations, along with seasonal crops of Scotch bonnet chillies and golden pumpkins. Our cashews supply Udari Nuts & Spices, and our coffee goes into Desco premixes. The quality of those brands depends on the health of our land, so caring for it is not an extra; it is part of making good products.

This article explains how we approach sustainable plantation management: protecting and building soil, managing water, controlling pests with integrated pest management, protecting pollinators and wildlife, using shade trees and crop diversity, reusing by-products, keeping people safe, and keeping records that help us improve. It ends with answers to common questions.

What sustainable plantation management means

Sustainable farming is often described in three parts:

• Environmental: protecting soil, water, air and wildlife, so the land stays productive.
• Economic: producing good yields and quality, so the farm stays viable.
• Social: treating the people who work on the farm, and the surrounding community, fairly and safely.

These parts support each other. Healthy soil grows healthier plants, which resist pests better, need fewer inputs and produce better crops. Safe, skilled workers harvest more carefully, which improves quality. Sustainability, done well, is simply good farming over the long term.

Protecting and building soil

Soil is the foundation of every crop we grow. It holds water and nutrients, supports roots and contains a vast community of living organisms that keep it fertile. Soil can be lost quickly through erosion and slowly through loss of organic matter, and it takes many years to rebuild.

Keeping soil covered

Bare soil is vulnerable. Heavy rain washes it away, strong sun bakes it, and organic matter breaks down faster. We keep soil covered wherever possible:

• Mulch of prunings, leaves and other plant material around coffee plants, young cashew trees, chillies and pumpkins;
• Ground cover between rows, managed so it does not compete with crops; and
• Leaf litter from shade trees and cashew trees, left to break down naturally.

Adding organic matter

Organic matter improves soil structure, helps soil hold water and feeds soil life. We return organic matter to the soil through compost, mulch and crop residues. Coffee pulp from processing can be composted and returned to the plantation, and cashew apples left between the rows after the nuts are removed break down into the soil.

Preventing erosion

Where land slopes, rain can carry topsoil away. Planting along the contour, keeping ground cover, building simple drains and barriers, and using mulch all slow water down and hold soil in place.

Feeding crops wisely

Crops remove nutrients with every harvest, and those nutrients must be replaced. We aim to feed crops based on their needs and the condition of the soil, using organic matter as the foundation and fertiliser where it is needed, at the right time and in the right amount. Soil testing helps guide these decisions. Over-feeding wastes money, can damage soil life and can wash nutrients into waterways.

Managing water

Water is precious, and weather patterns are becoming less predictable. Good water management protects both the crops and the wider environment.

• Holding rain in the soil. Mulch, ground cover and organic matter help rain soak into the soil rather than run off, and reduce evaporation.
• Efficient irrigation. Where seasonal crops such as chillies and pumpkins need watering, drip irrigation delivers water directly to the roots, using far less water than flooding or sprinkling, and keeping leaves dry, which reduces disease.
• Timing. Watering is matched to the crop’s stage: young plants and flowering crops need steady moisture, while pumpkins need less water as they ripen.
• Drainage. Good drainage prevents waterlogging, which damages the roots of cashews, coffee, chillies and pumpkins alike.
• Protecting waterways. Wastewater from coffee processing is rich in organic matter and should never flow straight into streams. It needs settling or treatment before it is released or reused.

Integrated pest management

Every crop has pests and diseases. Integrated pest management (IPM) is a way of controlling them that puts prevention and observation first, and uses chemical treatments only when they are really needed. The Food and Agriculture Organization of the United Nations promotes IPM as a way to grow healthy crops while minimising risks to people and the environment.

The steps of IPM

1. Prevention. Start with healthy planting material, suitable varieties, good spacing, pruning for airflow, balanced feeding and field hygiene.
2. Monitoring. Walk the fields regularly and inspect plants for pests, diseases and natural enemies.
3. Thresholds. Decide whether the level of pest or disease is high enough to cause real damage. A few insects do not always justify treatment.
4. Non-chemical control. Remove affected shoots, fruit or plants; use traps; collect fallen fruit; encourage natural predators.
5. Targeted treatment. If treatment is needed, choose the most suitable product, apply it only where needed, follow the label instructions and safety rules, and avoid times when bees are active.
6. Review. Record what was found and what was done, and check the results.

IPM in our crops

Protecting pollinators and wildlife

Many of our crops depend on insects. Cashew flowers are visited by bees and other insects; Robusta coffee depends on cross-pollination; and pumpkins need bees to carry pollen from male to female flowers. Without pollinators, harvests fall.

We protect pollinators by:

• avoiding sprays when crops are flowering and bees are active;
• choosing the least harmful option when treatment is needed;
• keeping flowering plants, hedgerows and trees around fields; and
• leaving undisturbed areas where insects can live.

Birds, spiders, wasps, ladybirds and other natural predators also help control pests. A varied plantation with trees, hedges and ground cover supports these allies.

Shade trees and climate resilience

Coffee grown under shade trees benefits in many ways. Shade lowers leaf and soil temperatures, slows cherry ripening (which can improve flavour), protects soil from heavy rain, adds leaf litter and provides habitat for birds and beneficial insects. Leguminous shade trees can also add nitrogen to the soil.

As weather becomes more unpredictable, with hotter spells and unseasonal rain, shade trees, mulch and healthy soil help our plantations cope. Choosing suitable, more resilient varieties for new planting is another important step. Recent reports of unseasonal weather affecting cashew harvests in Sri Lanka show why resilience matters.

Crop diversity and rotation

Growing more than one crop spreads risk and supports healthier land.

• Long-term and seasonal crops. Cashew and coffee are long-term crops. Scotch bonnets and pumpkins are seasonal crops that give harvests within months.
• Intercropping young trees. Space between young cashew trees, before their canopies close, can be used for short-term crops, keeping land productive and covered.
• Rotation. Chillies and pumpkins are rotated with crops from other plant families, rather than planted in the same place season after season. This breaks the cycles of soil-borne pests and diseases.

Crop diversity also supports the business: different harvests at different times of year provide steadier work and income.

Making use of by-products

Farming and processing produce many by-products. Treating them as resources rather than waste reduces pollution and returns value to the land.

People and safety

Sustainable farming must also be safe and fair for the people who do the work.

• Training. Workers are shown how to pick, handle and sort each crop properly, and how to recognise pests and diseases.
• Protective equipment. Gloves when handling Scotch bonnet chillies and freshly processed cashew nuts, and proper protective equipment whenever crop protection products are used.
• Safe storage. Fertilisers and crop protection products are stored securely, away from food, water sources and children, and empty containers are disposed of safely.
• Healthy working conditions. Shade, drinking water and rest during hot working days.

Records and continuous improvement

Good records turn experience into better decisions. We record planting, feeding, pest and disease observations, treatments, rainfall, harvest dates and quality. Over time, these records show which practices work, which blocks need attention and how the plantation is changing. They also support traceability, so we can follow a lot of cashews or coffee back to where and how it was grown.

Sustainability through the plantation year

Sustainable management is not a single project; it runs through every season. The outline below shows how the main tasks fit into the year on our cashew and coffee plantations.

Measuring progress

What gets measured gets managed. Simple indicators help us see whether our practices are working and where we need to improve.

Indicators like these turn sustainability from a promise into a practice we can check and improve, season after season.

From healthy land to Udari and Desco

The care we give our land is the first step in our products. Healthy cashew trees give well-filled nuts for Udari Cashew Nuts and Udari Oven Roasted Cashews. Well-managed coffee plants give ripe, sound cherries for Desco premixes. Fresh, clean Scotch bonnets and golden pumpkins reach kitchens in good condition.

You can explore our finished products on the Udari Nuts & Spices page and the Desco World of Coffee page.

Illustrative example

The following example is illustrative and does not describe a specific block or figures.

During the dry season, the team notices that topsoil has washed away along one slope of the coffee plantation after an unusually heavy storm. They plant a row of ground cover along the contour, mulch the bare patches with coffee prunings and dig a small drain to slow runoff.

At the same time, monitoring in the cashew plantation finds tea mosquito bug damage on a few trees. Instead of spraying the whole plantation, the team prunes the damaged shoots and watches the affected block closely. The damage does not spread, so no further treatment is needed.

After the coffee harvest, pulp from processing is composted and spread back under the coffee plants. The chilli field is cleared and rotated to a different crop for the next season. All of these actions are recorded, so the team can see the results the following year.

Frequently asked questions

Are your crops organic?

We do not label our crops as organic. We use organic matter, mulch and integrated pest management to keep chemical use low, and use crop protection products only when needed and as directed.

Why don’t you spray on a fixed schedule?

Spraying on a schedule often treats problems that are not there. Monitoring first and treating only when needed protects pollinators, natural predators, workers and the environment, and saves money.

Why are shade trees important for coffee?

They keep plants and soil cooler, slow ripening for better flavour, protect soil, add organic matter and give a home to birds and beneficial insects.

What happens to coffee pulp and cashew apples?

Coffee pulp can be composted and returned to the plantation. Cashew apples are left in the field, where they return organic matter to the soil.

Why do you rotate chillies and pumpkins?

Rotation breaks the cycles of pests and diseases that build up when the same crop family grows in the same place repeatedly.

How does sustainability affect product quality?

Healthy soil and well-managed plants produce better-filled cashews and sounder coffee cherries, which become better Udari and Desco products.

Do you use chemical fertilisers?

We use organic matter, compost and mulch as the foundation of soil fertility, and add fertiliser where crops need it, at the right time and in the right amount, guided by the condition of the soil.

How do you protect bees on the plantation?

We avoid spraying when crops are flowering and bees are active, keep trees and flowering plants around the fields, and choose the least harmful option when a treatment is needed.

Conclusion

Sustainable plantation management means looking after the land so it stays productive for decades. That means protecting soil with cover, mulch and organic matter; using water carefully; controlling pests with monitoring and integrated pest management; protecting pollinators and wildlife; using shade trees and crop diversity; making use of by-products; keeping people safe; and learning from good records.

These practices are how we grow our cashews, coffee, Scotch bonnets and golden pumpkins, and they are the foundation of every Udari and Desco product.

Want to know more about our plantations or our products? Get in touch.

Contact Our Team

Sources

• FAO, integrated pest management: https://www.fao.org/pest-and-pesticide-management/ipm/integrated-pest-manmgement/en/
• FAO, soil health and sustainable soil management: https://www.fao.org/soils-portal/en/
• FAO, cashew cultivation and processing practices in Sri Lanka: https://www.fao.org/4/ac451e/ac451e08.htm
• Climate Fact Checks, Sri Lanka’s cashew crisis and climate extremes: https://climatefactchecks.org/sri-lankas-cashew-crisis-climate-extremes-push-farmers-to-abandon-a-once-thriving-crop/
• Department of Agriculture Sri Lanka, HORDI crop information: pumpkin: https://doa.gov.lk/?p=36076