Characteristics of Agriculture in the Caribbean Flashcards
(43 cards)
What is Agriculture
Agriculture is the rearing of plants and animals to produce food for human use and consumption, animal consumption and raw materials for industry.
It can also be defined as the cultivation of soil and/or water to produce crops and livestock for human consumption and use, animal consumption and raw materials for industry.
Characteristics of Peasant farming
- Small areas of land are cleared to plant crops. Usually the areas that are cleared are burned (slash and burn). Farmers tend to move from place to place.
- Does not use any input of agrochemicals and energy in the form of fossil fuels. This type of farming systems is not labour intensive.
- Productivity is very low
- Produce is consumed solely by the farmers and their families
- Does not use mechanised equipment in its operation.
- Does not require high levels of financing.
Characteristics of Subsistence Farming
- Uses areas of land larger than peasant farming systems for cultivation
- May use small amounts of agrochemicals and energy in the form of fossil fuels. Is more labour intensive than peasant farming systems but less than commercial farming systems.
- Productivity is low
- Produce is consumed by the farmers and their immediate families. Excess produce is often sold
- Does not use mechanised equipment in its operation.
- Does not require high levels of financing.
Characteristics of Commercial Farming
- Requires extremely large areas of land for cultivation. There is no burning of the area and the location of the farm is fixed.
- Uses large inputs of agrochemicals, energy in the form of fossil fuel and labour.
- Productivity is very high. Produces high yields per unit of farmland area.
- Products are mainly produced for selling to make a profit.
- Uses mechanised equipment in its operation.
- Requires high levels of financing.
Factors contributing to the evolution of agriculture systems in the Caribbean
Climate: The tropical climate in the Caribbean provides conditions that are conducive to planting, growing and harvesting crops and the rearing of livestock
Availability of land and fertility of soils: There is a lot of fertile land in Caribbean countries that is suitable for the cultivation of crops and the practice of aquaculture.
History: Historically, Caribbean countries have been engaged in the production of different crops and livestock. Flat fertile land, access to fresh water and ports have all favoured agricultural production in many Caribbean countries.
Labour: In many Caribbean countries people have been engaged in peasant or subsistence farming. The populations of many countries are adequate to support farming activities.
How does Agriculture impact on the lifestyle of Caribbean people
In the Caribbean, most agricultural communities are rural. Ofte nactivitie are centred on working and tending to agricultural plots. Sometimes it can affect children’s attendance at school as they often have to work on farms.
very often a substantial percentage of the population of some rural communities are directly employed in agricultural activities as farmers, processors and in the transport sector. The lifestyle of the population is therefore based on such jobs and the earnings from these jobs.
Aquaculture
Aquaculture is defined by the United Nations Food and Agriculture Organization as the farming of aquatic organisms including fish, molluscs, crustaceans ad aquatic plants. Farming implies some type of intervention in the rearing process to enhance production, such as regular stocking, feeding and protection from predators. The term aquaculture encompasses freshwater farming of aquatic species. Aquaculture may be either intensive or extensive
Intensive and Extensive Aquaculture
Intensive aquaculture: requires heavy inputs of fertilisers and feed, has high stocking densities and produces high yields per unit area.
Extensive aquaculture: requires low stocking densities, but does not require supplemental feed or fertilisers.
Over the years there has been an increase in aquaculture activities in the Caribbean. Some of the factors that have contributed to this increase include:
- the continuously rising cost of fishing operations due to the steep rise in the price of fuel.
- a decrease in the production of marine fish by countries that depend on fishing in either their own territorial waters or the territorial waters of other countries.
- a need to increase the foreign exchange earnings of Caribbean countries engaging in aquaculture.
Objectives of Aquaculture in Caribbean Countries
- Production of protein-rich, nourishing, palatable and easily digestible human food benefiting the whole of society through plentiful food supplies at low or reasonable cost.
- Providing new species and strengthening stocks of existing fish into natural and man-made water bodies through artificial recruitment and transplantation.
- Production of species to support recreational fishing.
- Development of industries that can create a production surplus for export to increase foreign exchange earnings.
Mariculture and its Features
Mariculture is the production of food from exclusively marine organisms in their natural environment. While the form of aquaculture is relatively new, it has already become important and still has great potential. Fish produced by mariculture are regarded as a good source of affordable protein. Mariculture is growing in popularity in some Caribbean countries because of the high demand for seafood.
Features of Mariculture:
- It is conducted in either brackish water or in the marine environment, depending on the species that is cultivated.
- Organisms grown often feed on naturally occurring food sources such as algae and plankton. This helps to reduce the cost of production.
- The organisms grown are generally spared human-induced stressors since there is no transfers between the artificial and natural environments.
- The practice of mariculture usually requires large areas of the sea or coastal environment if the venture is to be economically viable.
Advantages and Disadvantages of Mariculture
Advantages:
- It can provide an alternate source of protein from marine species even as the cost of production from commercial operations increases.
- It can produce high yields of fish protein at low cost and can be sustainable
- It requires small inputs of food, machinery, time and anergy compared to commercial operations.
- It is an excellent opportunity for small Caribbean countries to provide protein for their population while generating a surplus for revenue generation.
- As a relatively new industry in some Caribbean countries, it can provide an alternative source of income for people and help address unemployment in these countries.
Disadvantages:
- Excess organic matter settles on the seabed and results in an increase in the populations of bacteria, which could be determined to other species.
- An increase in organic matter can promote eutrophication thereby affecting the water quality, which ultimately reduces the productivity of the aquatic environment and the cultured species.
Food Security and Agro-processing
The role of agriculture in food security in the Caribbean:
Food security is defined as a condition in which all people, at all times. have physical and economic access to sufficient, safe and nutritous food to meet their dietary needs and food preferences for an active and healthy life.
Five Components of Food Security
- Availability: implies that there is sufficient food for all people at all times.
- Accessibility: addresses the physical and economic access to food for all at all times.
- Adequacy: is access to food that is nutritious and safe, and produced in environmentally sustainable ways.
- Acceptability: is about access to culturally acceptable food, which is produced and obtained in ways that do not compromise people’s dignity, self-respect or human rights.
- Agency: refers to the policies and processes that enable food security to be achieved.
Factors Affecting Food Security
- A decline in the productivity of land, labour and management, which often reduces the capacity to produce agriculture products at competitive prices.
- A decline in earnings from traditional export crops, resulting from changes in trade preferences.
- Trade regulations and other policies that affect the global marketplace for agricultural products.
- A growing dependence on imported foods and cheap agricultural products, which is often worsened by external shocks such as global market and price fluctuations.
- The inefficient use of water and other inputs.
- A dependency on imported food, resulting from the inability to produce food locally at competitive prices.
Production of materials for agro-processing industries
Agro-processing involves turning agricultural produce into products which can be marketed locally, nationally or exported. The employment opportunities provided by the agro-processing industry are numerous. They range from unskilled labour to people with professional qualifications.
In some Caribbean countries much of the agricultural produce is processed between harvesting and final use. Agro. processing industries that use agricultural products as raw materials comprise a very varied group. These may range from simple preservation by sun drying to operations that use technological harvesting techniques, to production by modern, capital-intensive methods.
Agriculture and the Economy
Agriculture is very important to the economic development of many Caribbean countries and today agriculture production still accounts for a large part of the Gross National Product (GNP) and the Gross Domestic Product (GDP) of some Caribbean countries.
The importance of the sector is even greater when one considers that primary agricultural production has links with industrial processing and manufacturing activities, transport, marketing services and foreign trade. Population growth also brings about a rise in demand for agricultural products.
Technology and Agricultural Productivity
Technology has enabled the successful practice of agriculture in the Caribbean over the years. Technological innovations have led to increased agricultural productivity, new and improved varieties and improved resistance to pests and diseases.
They are two key assumptions regarding the role of technology in agriculture:
- technology has and will continue to increase agricultural productivity.
- technology, if managed properly, can be the basis for sustainable agriculture
Technological innovations that have aided Caribbean Agriculture
Use of Agrochemicals (fertilisers and pesticides): Fertiliser inputs can increase productivity by increasing the nutrients available to plants, thus promoting improved plant growth and production. Pesticides have been useful in curbing pest and disease outbreaks, which eventually leads to healthier crops and greater productivity.
Mechanisation: Mechanisation in agriculture has led to increased productivity through the use of larger and more efficient implements for cultivation and harvesting. Through mechanisation, uncultivated land can now be cultivated. Harvesting of crops using mechanised methods makes harvesting easier and less time consuming and minimises wastage, so increasing overall productivity. Mechanisation has also led to an increase overall productivity. Mechanisation has also led to an increase in the use of agrochemicals, which has promoted an increase in productivity.
Genetic Engineering: Genetic engineering has led to the identification of genes that determine favourable characteristics in crops and livestock. This technology has resulted in the development of transgenic organims and greater productivity. Crops can now be genetically engineered to tolerate different environmental conditions. With such improved tolerance, degraded farmlands can now become productive or be made more productive. Crops and livestock can now be engineered to have greater resistance to certain pests and diseases.
The Impact of technology in Agriculture on the Environment
- Heavy reliance on agrochemicals to improve production and control damaging insects and weeds.
- Intensive soil manipulation to maintain crop productivity.
- Heavy reliance on external inputs of water. Irrigation allows year-round cropping of the same crop.
- Heavy reliance on external inputs of energy.
- Monocropping is thought to be better suited for large-scale mechanisation. However, it creates ideal condition for pests and adverse conditions for natural controls.
Agrochemicals
The increased use of agrochemicals can lead to the development of resistance of pests and diseases to certain agrochemicals, thus reducing their effectiveness.
Leaching of fertilisers into water bodies can occur, leading to nutrient enrichment and contamination of water resources. Nutrient enrichment or eutrophication of waterways can lead tp progressively more complex problems in ecosystems. Food chain contamination, bioaccumulation and biomagnifications of toxic substances can also occur.
Mechanisation
Using machinary often promotes an increased use of pesticides and fertilisers, which could lead to serious environmental problems. Mechanisartion can also lead to farm specialisation, thus eliminating less profitable crops, and resulting in farm amalgamation. This can have serious social consequences. mechanisation also often encourages monoculture cropping, which can increase the risk of pest outbreaks. This means more agrochemicals are necessary to rid the crops of the pest or disease. Excessive use of pesticides can lead to increased residues of these pesticides in crops and livestock, thereby posing a threat to human health and the ecosystem in general.
The use of heavy machinery in agriculture could also cause soil compaction, promote loss of soil structure and increase erosion. This could eventually affect plant growth and reduce productivity.
What i Soil Compaction and why it is a problem for plant growth
Soil Compaction- A healthy soil is made up of large a amount pf pore space, organic matter and mineral particles. Pore space in soil provides adequate room for air and water to circulate around the mineral particles. This provides a healthy environment for plant roots and useful soil microbes. In a compacted soil, the particles are pressed together so tightly that the space for air and water is greatly reduced.
Why it is a problem for plant growth:
- roots cannot easily penetrate the soil to obtain the nutrients, water, and structural support they require.
- reduced pore space results in reduced drainage, causing the soil to become waterlogged.
- in waterlogged soils there is no room for oxygen, and this inhibits plant growth.
- the lack of oxygen also inhibits the decomposition of organic matter- an essential process for recycling nutrients and aerating the soil.
- compaction of the soil prevents water from percolating through the soil, causing it to run off the soil surface and increasing soil erosion.
Health Risks from Agriculture
Many Caribbean countries face the challenge of developing sustainable food production systems. It is necessary to maintain a supply of healthy food at affordable prices. Doing this has led to an increasing use of agrochemicals and the implementation of practices that pose serious health risks to people and the environment. The ‘Green revolution’ itself led to:
- High-input monoculture, using selectively bred or genetically engineered crops.
- High yields, using high inputs of fertiliser and water and extensive use of pesticides.
-multiple cropping systems, where there is an increase in the number of crops grown per year on a plot of land.
Consequences:
- Over-application of fertilisers that can increase pollution through runoff onto water bodies, infiltration of aquifers and evaporation into the air. The nitrates and phosphates in fertilisers can cause health problems.
- waste runoff that increases nutrients and pathogens in streams.
-runoff that carries sediments, nutrients and pesticides into streams that damage fish and other aquatic organisms’ habitats.
Threats to Sustainable Livelihood of Communities
agriculture plays a significant role in many communities in Caribbean countries. Although agriculture has helped meet the needs of these communities, there are instances where the practice of agriculture has compromised the availability of valuable natural resources.
There are two inextricably linked components to agricultural sustainability: social and environmental. The agricultural sector in the Caribbean has always played multiple roles in helping to:
- ensure food security
- promote rural development
- provide resources for the livelihood of the majority of people, without destroying the environmental base
A livelihood comprises the capabilities, assets and activities required as a means to earn a living. A livelihood is said to be sustainable if it has the ability to:
- cope with, and recover from, stresses and shocks
- maintain or enhance its capabilities and assets
- provide net benefits to other livelihoods locally and more widely, now and in the future, without undermining the natural resource base