France Première STAV (agronomy and life sciences) — 1re specialties
Chapters: 7
1. S1 Managing resources and food
Food products, farming methods and human needs · The agroecosystem as a managed system · Energy in work buildings · Energy in transport
- Food Science: The Chemistry of What We Eat – Food science studies what food is made of and how it changes from farm to plate. Food contains carbohydrates, proteins, fats, water, vitamins and minerals. Cooking changes them: heat unfolds proteins (denaturation), starch swells in water (gelatinisation), and dry heat browns food through the Maillard reaction and caramelisation. Microbes ferment food into bread, curd and pickles, but can also spoil it. Processing, preservation and safe temperatures keep food safe and nutritious for a growing world population.
- Minerals and Energy Resources – Minerals are natural substances found in rocks. They are metallic (ferrous or non-ferrous), non-metallic, or energy minerals. Energy comes from conventional sources like coal, petroleum, natural gas and electricity, and from non-conventional sources like sun, wind, nuclear, biogas, tides and heat from the Earth. Both minerals and energy must be conserved.
2. S2 Territories and societies
Resources and actors of a territory · Social and cultural practices in a territory · Social and cultural identity of a territory
- Rural Geography: How Countryside Areas Live and Change – Rural areas have few people per square kilometre, lots of open land and small settlements. Farming shaped them, but machines mean fewer farm jobs. Today rural land has many uses: homes for commuters, tourism, nature protection and energy. Areas near cities often grow (the rural-urban fringe), while remote areas may lose people and services. Farmers, residents, local councils and businesses all want different things, so land-use planning sets rules.
- Social Change and Social Order in Villages and Cities – Social change means a big, lasting change in how society is organised. It can be slow (evolutionary) or sudden (revolutionary), and it can change structures, ideas or values. It is caused by the environment, technology and the economy, politics and culture. Social order is the other side: the way society keeps itself steady through shared values, domination, authority and law. Order is always challenged by contest, crime and violence. Villages, towns and cities differ in size, density and work, and each changes in its own way.
3. S3 Technology — services
Variety of service activities · Technical answers and context · Reasons behind technical choices
- Services in the Countryside – A service is work done for someone, not an object you take home: a vet visit, a bus ride, a health check, a farm advice call, a repair, a delivery. In the countryside people and farms are spread out, so the technical answer to a need (a fixed shop, a mobile van, a pick-up point, a phone consult) depends on the context: distance, number of users, roads, season, cost and rules. Actors such as farmers, residents, firms and public authorities each have their own logic, and the final choice is a compromise between them.
4. S3 Technology — food processing
Variety of food-processing activities · Technical answers and context · Reasons behind technical choices
- Food Preservation, Processing and Value Addition – Food spoils when microbes grow in it and when its own enzymes, air, light and pests damage it. Preservation removes what microbes need: water (drying, salt, sugar), warmth (refrigeration, freezing), a mild pH (acids, fermentation) or the microbes themselves (heat, canning, pasteurisation, permitted preservatives). Foods are classed as perishable, semi-perishable or non-perishable, and as minimally, moderately or highly processed. Good post-harvest storage and processing reduce losses and add value, so farmers and food businesses earn more.
5. S3 Technology — agricultural equipment
Variety of equipment activities · Technical answers and context · Reasons behind technical choices
- Agricultural Machinery: How Machines Prepare, Sow, Protect and Harvest – Agricultural machines do farm work faster, more evenly and with less hard labour. The tractor is the power unit; implements are attached for each job: ploughs and harrows prepare soil, drills and planters sow, sprayers and drones protect crops, combines harvest. Choices depend on farm size, soil, crop, cost and environment, and safe use saves lives.
6. S3 Technology — farm production
Variety of farming activities · Technical answers and context · Reasons behind technical choices
- Agriculture – Agriculture means growing crops and raising animals. In India it ranges from small family plots to big commercial farms and plantations. Crops grow in three seasons: kharif, rabi and zaid. Each major crop needs its own mix of rain, temperature and soil. The government has made reforms to help farmers.
7. S3 Technology — land and landscape management
Variety of land-management activities · Technical answers and context · Reasons behind technical choices
- Land and Landscape Management – Land and landscape management means looking after a piece of land on purpose. The jobs include caring for forests, gardens and parks, nature areas and water. Every project follows steps: survey the site, find out what people need, check the rules and the money, choose technical solutions, build in order, then care for the place. The site itself (slope, soil, water, neighbours) shapes the project, and social, legal and economic factors shape every decision.