What is agriculture?
Agriculture is the cultivation of crops and the rearing of animals for food, fuel, fibre, and other products. It is the foundation of human society, providing sustenance, raw materials, and employment for billions of people across the world.
For most of history, farming practices were shaped by local knowledge and natural rhythms. But industrial-scale agriculture, driven by population growth and global food demand, has placed enormous pressure on soils, water systems, and ecosystems. The result has been widespread land degradation, biodiversity loss, deforestation, and a significant contribution to global greenhouse gas emissions.
Sustainable agriculture addresses these pressures directly. By implementing farming practices that maintain productivity while protecting natural resources, it offers a path for agriculture to be part of the solution to environmental challenges rather than a driver of them.
Herd of Jersey cows grazing on a farm.
Read more: What is sustainable land management?
Why sustainable agriculture matters
Agriculture is one of the most significant drivers of environmental change on the planet. It accounts for approximately 70% of global freshwater withdrawals, is responsible for around 10 to 12% of global greenhouse gas emissions, and has contributed to the loss of nearly a third of the world's topsoil over the past century. At the same time, it must feed a global population projected to reach nearly 10 billion by 2050.
Sustainable agriculture is not simply an environmental preference, it is a practical necessity. Farming systems that degrade the land they depend on are not viable in the long term. Practices that conserve soil health, reduce chemical inputs, manage water efficiently, and restore biodiversity do not just protect the environment: they also produce more resilient yields, reduce input costs, and protect the livelihoods of farming communities for generations.
Growing beetroots, organic farm.
Read more: Agroforestry explained: a guide to regenerative farming
The benefits of sustainable agriculture
Economic benefits
Sustainable agricultural practices deliver concrete economic benefits at farm, community, and national level. By reducing dependence on synthetic inputs and improving soil health over time, sustainable farming lowers operating costs and improves long-term yields. Diversified farming systems — particularly those integrating trees, crops, and livestock — create additional revenue streams and reduce exposure to market volatility. At the national level, agriculture remains a major contributor to GDP and export earnings, and the shift towards sustainable production increasingly opens access to premium markets and green finance.
Social benefits
Agriculture is the primary source of income and food security for a large share of the world's rural population. Sustainable farming practices protect and extend this by maintaining the productivity of land over the long term, rather than depleting it for short-term gain. Community-based approaches to land management — including agroforestry and cooperative farming models — have also been shown to improve gender equality and provide educational and training opportunities that strengthen rural communities more broadly.
Woman working on cultivating vegetables in a field.
Environmental benefits
Sustainably managed farmland can function as a significant carbon sink. Practices such as reduced tillage, cover cropping, and agroforestry build soil organic matter, which captures and stores carbon dioxide from the atmosphere. Healthy soils also filter water, reduce runoff and flood risk, and support the biodiversity that underpins all agricultural productivity, from pollination to natural pest control.
The key challenges facing agriculture today
Environmental instability
Environmental instability is already reshaping agricultural conditions across the world. Shifting rainfall patterns, more frequent droughts and floods, rising temperatures, and the spread of pests and diseases are reducing yields and increasing the unpredictability of farming. Long-term changes in the climate can also render previously productive land unsuitable for cultivation, threatening food security and displacing farming communities, particularly in regions that are already ecologically fragile.
Soil degradation and erosion
Intensive farming practices including: overuse of synthetic fertilisers, heavy machinery, and continuous monoculture cropping degrade soil structure and reduce fertility over time. Degraded soils are less productive, less able to retain water, and more vulnerable to erosion. Once topsoil is lost, it takes centuries to rebuild naturally. Sustainable soil management is therefore not just an environmental goal, it is a prerequisite for long-term food production.
Water scarcity and water overuse
Agriculture accounts for the majority of global freshwater consumption. In many regions, groundwater reserves are being drawn down faster than they can be replenished, and surface water systems are under pressure from pollution and reduced rainfall. Water-efficient irrigation, soil health management, and agroforestry can all reduce agriculture's water footprint while maintaining or improving productivity.
Read more: 10 Agricultural techniques for water conservation
Irrigation system watering a green vegetable field.
Food security and population growth
With the global population projected to grow significantly over the coming decades, agriculture must produce more food on roughly the same amount of arable land, while simultaneously reducing its environmental impact. This requires a fundamental shift in how land is managed, with greater emphasis on efficient, restorative, and diversified farming systems.
Biodiversity loss
The simplification of agricultural landscapes (replacing diverse ecosystems with large monoculture fields) has contributed significantly to global biodiversity decline. Loss of biodiversity weakens the ecological systems that agriculture depends on, including pollination, natural pest regulation, and soil microbial health. Restoring biodiversity through diversified cropping, hedgerow and woodland management, and the integration of native species is both an ecological and agricultural priority.
Bee on a chamomile field flower.
At Green Earth, we recognise the importance of maintaining biodiversity for the benefit of all. That is why our projects are designed to safeguard biodiversity and restore vital habitats.
Read more: Sweet solutions: the role of bees and Impact Investments in environmental restoration
Sustainable agricultural practices that make a difference
Organic farming
Organic farming is a sustainable agricultural practice that involves using natural inputs and biological processes to produce crops and livestock. Organic farming prohibits the use of synthetic fertilisers, pesticides, genetically modified organisms (GMOs), and irradiation. Organic farming aims to promote soil health and biodiversity. Organic farming also places a strong emphasis on animal welfare and avoids using antibiotics and hormones. Organic farming has gained popularity in recent years due to increasing concerns about the negative impacts of conventional agricultural practices on the environment and human health.
Permaculture
Permaculture is a sustainable agricultural practice that aims to create permanent, self-sustaining agricultural systems that mimic natural ecosystems. Permaculture involves designing agricultural systems that work with nature rather than against it, using principles such as diversity, interdependence, and regeneration. Permaculture systems typically involve a mix of crops, livestock, and other elements such as ponds, composting, and energy production. The goal of permaculture is to create agricultural systems that are resilient, productive, and sustainable in the long term.
Regenerative agriculture
Regenerative agriculture is a holistic approach to farming that seeks to improve the health and fertility of the soil, increase biodiversity, and promote sustainable and resilient ecosystems. It involves working with natural systems and processes to build soil health, sequester carbon, and enhance the productivity and profitability of farms.
Regenerative agriculture emphasises practices that restore and enhance soil health, such as minimising tillage, using cover crops, crop rotations, and composting. It also includes grazing management that mimics natural grazing patterns and allows animals to move and graze freely in a way that benefits both the land and the animals.
Regenerative agriculture recognises the importance of biodiversity and seeks to promote it by creating diverse habitats for beneficial insects, birds, and other wildlife. It also emphasises the use of natural pest management techniques and the avoidance of synthetic pesticides and fertilisers. At Green Earth, we incorporate regenerative agricultural techniques within our projects to ensure the highest benefit for both communities and ecosystems.
Read more: How regenerative agriculture is transforming sustainable farming
Conservation agriculture
Conservation agriculture is a sustainable agricultural practice that aims to protect and improve soil health while maintaining or increasing crop yields. Conservation agriculture involves minimising soil disturbance, maintaining soil cover, and rotating crops to improve soil fertility and reduce erosion. Conservation agriculture also emphasises the use of natural inputs and reduces the use of synthetic fertilisers and pesticides. The goal of conservation agriculture is to create agricultural systems that are sustainable, productive, and environmentally friendly.
Read more: Dry farming: growing crops without irrigation
Agroforestry
Agroforestry is a sustainable agricultural practice that integrates trees and shrubs into agricultural systems. Agroforestry improves soil health, increases biodiversity, and provides benefits such as shade, windbreaks, and food sources for livestock. Agroforestry also helps to mitigate the negative impacts of agriculture on the environment, such as reducing carbon emissions and soil erosion. Agroforestry systems can include alley cropping, silvopasture, and forest gardening, among others. The goal of agroforestry is to create agricultural systems that are sustainable, productive, and environmentally friendly.
Read more: Farming's new frontier: agroecology in action
Amazon Agroforestry Parcel/Land with a variety of tropical crops.
Technology in agriculture
Precision agriculture
Precision agriculture is a technology-based approach to farming that uses data and analytics to optimise crop yields and reduce inputs such as fertilisers, pesticides, and water. Precision agriculture involves using tools such as drones, sensors, and GPS to monitor crops and soil conditions in real time. This information is then used to create customised management plans that optimise inputs and maximise crop yields. Precision agriculture reduces costs for farmers, improves productivity, and reduces their environmental impact.
Vertical farming
Vertical farming is a technology-based approach to agriculture that involves the cultivation of crops in vertically stacked layers using artificial lighting and controlled environments. Vertical farming can be done indoors or outdoors and produce crops year-round, regardless of climate or weather conditions. Vertical farming also reduces water usage, pesticides, and fertilisers and increases crop yields per unit of land. However, vertical farming requires significant energy inputs and can be expensive to set up and maintain.
Organic vertical farming.
Hydroponics and aquaponics
Hydroponics and aquaponics are technology-based approaches to agriculture that involve cultivating crops without soil, using nutrient-rich water instead. Hydroponic systems are used to grow crops in a controlled environment and produce crops year-round, regardless of weather conditions. Aquaponic systems combine hydroponics with aquaculture, using fish to provide nutrients for the plants. The plants, in turn, filter the water, which is then returned to the fish tanks. Hydroponics and aquaponics can reduce water usage, pesticides, and fertilisers and increase crop yields per unit of land. However, these systems require significant energy inputs and can be expensive to set up and maintain.
Sustainable livestock farming
The importance of sustainable livestock farming
Sustainable livestock farming is important for several reasons. First, it helps reduce the environmental impact of agriculture by minimising the use of natural resources and reducing carbon emissions. Sustainable livestock farming also improves animal welfare and provides economic benefits for farmers and their communities. Additionally, sustainable livestock farming can help ensure food security by providing a reliable source of protein and other nutrients.
Grass-fed vs grain-fed
Grass-fed livestock farming involves the practice of raising animals on pasture and feeding them a diet primarily of grasses and other forage. Grain-fed livestock farming involves feeding animals a diet based on grains such as corn or soy. Grass-fed livestock farming is considered more sustainable and environmentally friendly than grain-fed farming because it reduces the need for fossil fuels and the risk of soil erosion. Grass-fed livestock also tend to have higher levels of omega-3 fatty acids and other beneficial nutrients compared to grain-fed livestock. However, grass-fed livestock farming can be more expensive and may not be as efficient in terms of meat production.
Read more: What is carbon farming?
Animal welfare
Animal welfare is an important aspect of sustainable livestock farming. Sustainable livestock farming involves providing animals with humane living conditions, access to pasture or outdoor areas, and a diet that meets their nutritional needs. Additionally, sustainable livestock farming avoids using antibiotics and growth hormones, which can negatively impact animal health and welfare. Improving animal welfare not only benefits the animals but also improves the quality of the meat and other animal products produced. Consumers are increasingly demanding products from animals that have been raised in humane and sustainable conditions.
Read more: How carbon project developers quantify biodiversity and community impact
Challenges of livestock farming
Land degradation and deforestation
Land degradation and deforestation are significant challenges in livestock farming. As demand for meat and dairy products increases, more land is needed for grazing and feed production. This can lead to deforestation and land degradation, which can negatively impact biodiversity, soil quality, and water resources. Livestock farming can also contribute to soil erosion and desertification, further degrading the land quality and reducing its productivity.
Read more: What is sustainable land management?
Water use and pollution
Livestock farming is water-intensive, with animals requiring significant amounts of water for drinking and other uses. Additionally, livestock farming can contribute to water pollution through runoff from manure and other waste products. This leads to contamination of surface water and groundwater, which can negatively impact human health and the environment. Livestock farming can also contribute to the eutrophication of water bodies, resulting in harmful algal blooms and other negative impacts on aquatic ecosystems.
Antibiotic resistance
Antibiotic resistance is a growing concern in livestock farming. Antibiotics are commonly used in livestock farming to prevent and treat diseases, but their overuse can lead to the development of antibiotic-resistant bacteria. This has negative impacts on human health, as antibiotic-resistant bacteria can spread from livestock to humans through food, water, and other pathways. Antibiotic-resistant infections can be more challenging to treat and result in higher morbidity and mortality rates. Additionally, the overuse of antibiotics in livestock farming can lead to the development of superbugs, which can be resistant to multiple antibiotics and pose a significant public health threat.
A herd of sheep in the field drinking water from a stream.
Food waste and food loss
One way of making agricultural practices and the amount of agricultural products produced more sustainable is better management of end products. That means that along with making agriculture a more sustainable practice, in parallel, we need to pay attention to the topic of food waste too.
What are food waste and food loss?
Food waste and food loss are two terms used to describe the amount of food discarded or lost at various stages of the food supply chain. Food waste refers to food that is discarded by consumers, retailers, and restaurants, while food loss refers to food that is lost during production, transportation, and storage before it even reaches consumers. Both food waste and food loss have significant economic, social, and environmental impacts.
The causes of food waste and food loss
There are many causes of food waste and food loss. In some countries, food loss is often due to inadequate infrastructure for transportation and storage, while in other countries, food waste is often due to consumer behaviour and preferences. Retailers and restaurants also contribute to food waste by discarding food that is still safe to eat but that passed its sell-by date. Additionally, overly strict cosmetic standards for fruits and vegetables lead to significant amounts of food being discarded.
Solutions to reduce food waste and food loss
There are many solutions to reduce food waste and food loss. These include improving infrastructure and technology for food storage and transportation, implementing better supply chain management practices, and reducing consumer food waste through education and awareness campaigns. Food recovery programmes can also help divert food that would otherwise be wasted to food banks and other organisations that serve those in need.
Improved food labelling practices, like using ‘best by’ instead of ‘sell by’ dates, can also reduce consumer confusion and minimise the amount of food needlessly discarded. Finally, businesses and governments can work together to create policies that incentivise the reduction of food waste and food loss throughout the supply chain.
Hands holding wheat grains.
How Green Earth supports sustainable agriculture
It is clear that sustainable agricultural practices are crucial for creating a better planet. We must take action to reduce our environmental impact and create more resilient and sustainable food systems. This can be achieved through a combination of education, innovation, and policy changes. Consumers can make a difference by supporting local, sustainable agriculture and reducing food waste, while businesses can implement sustainable practices throughout their supply chains. Governments also play a critical role in incentivising sustainable agricultural practices and investing in research and development to support innovation in the agricultural sector.
Green Earth believes in the power of innovation and that only by following principles of sustainability can we create a better and brighter future for all. Our projects incorporate a variety of sustainable agricultural techniques, such as agroforestry and regenerative agriculture. We also maintain a heightened focus on safeguarding biodiversity and preventing habitat loss through the species chosen for planting. Moreover, helping local communities develop and upkeep sustainable agricultural practices is a key component that contributes to the long-term success of our endeavours.
Agriculture has a vital role to play in creating a better planet. Sustainable agricultural practices help address some of the most pressing environmental and social challenges facing our planet, from environmental instability to food insecurity.
By embracing innovative technologies and practices, we can create more efficient and resilient food systems that benefit both people and the planet. It is up to all of us — from consumers and businesses to policymakers and researchers — to take action and work together towards a more sustainable and equitable future.
