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HOW AGRICULTURE BEGAN
Gathering wild plants, hunting wild animals and fishing
•From simple tools to advanced technology•Produce food and materials•For own consumption and economic purpose
=Moving from place to place to look for food=Growing crops (suitable land for growing crops)
=Rearing animals
Nomadic life
Arable farming
Pastoral
• What is Shifting Cultivation?
• Where is it practiced in the world?
• How do Shifting Cultivators carry out their cycle of activities?
• What are the characteristics of Shifting Cultivation?
A type of farming in which basic tools and burning are used to clear a small area of land for growing crops.
When the soil is no longer fertile, the farmers move on to another plot of land to start the process again.
Eg Rice, maize, tapioca
http://www.youtube.com/watch?v=-pQng2qZbqQ
Select site
Slash and Burn forests (fertilize)
Plant crops Move to new site
Eg Indonesia
Fig 7.4 pg 48
Infertile soil
(a) A small plot of land approximately 1 to 2 hectares is selected.
(b) The trees are felled at the beginning of the DRY season using very simple tools.
(c) After 1 to 2 months, when the felled trees have dried out, they are set on fire and the resulting ashes add nutrients (fertilizer) to the soil.
(d) Planting takes place at the beginning of the rainy period, when the soil is cool and moist.
Long, pointed sticks are used to make holes in the ground and seeds are dropped into the holes.
Once the seeds are sown, the shifting cultivators do not spend much time tending their crops.
Before Clearing
After Clearing
(e) Harvesting takes place when the crops are ready. Some of the best seeds from the harvest are kept for the next planting season.
Select area and slash
HarvestPlanting crops
Burn
(f) The soil may become infertile after 2 to 3 years of planting.
The shifting cultivators will look for another plot of land to carry out the slash-and-burn method again.
The original plot of land is left to fallow. They may return to the same spot after 7 to 10 years when the land has regained its fertility.
Lets look at text page 49.
1. What do you see in the first picture?
2. What does the second picture tell you about the level of technology?
Relief Flat land for easier farming
Soil Infertile after few years
Fertiliser Burnt vegetation from trees
Tools Traditional eg Dibble
Capital Little or no (poor farmers)
Seeds From previous harvests
Pesticides / Herbicides
No (cannot afford to)
Labour Family members
Sunlight/ Rainfall High temperature , high rainfall, high humidity
Inputs for Shifting cultivation
Shifting Cultivation (Indonesia) Wet Rice Cultivation (Thailand/China)
Plantation agriculture (Malaysia) High Tech farming (Singapore)
Agricultural Types
1.What is Wet Rice Cultivation?
2.Where is it practiced in the world?
3.How do Wet Rice Farmers carry out their cycle of activities?
4.What are the characteristics of Wet Rice Cultivation?
Inputs (Wet rice)
Relief
Soil
Fertiliser
Tools
Capital
Seeds
Pesticides / Herbicides
Labour
Sunlight/ Rainfall High temperature , high rainfall, high humidityCut terraces onto slopes to create flat land
Clayey soil, Flooded rice fields, Fertile alluvial soil
Animal manure Chemical fertiliser
Basic Intermediate
Low High
Previous harvests Purchased (may be HYVs)
Little or none Yes
Family/Some workers Hired workers
Traditional Commercial
Wet Rice Cultivation (Traditional VS Commercial)Grow padi on flooded field (pg51)
1. Plough (loosen soil) : Using animals or tractors
2. Transplant (Transfer) : Nursery to rice fields
3. Irrigation : Artificial water supply
4. Ripen crops
5. Harvest crop yield
6. Threshing for rice grains ( separate rice grains)
eg Thailand
Irrigation : To supply (dry land) with water by means of ditches, pipes, or streams; water artificially. (Worksheet page 5)
Growing of padi on flooded flat land
Main farming activity in Southeast Asia, East Asia and South Asia
Availability of clayey alluvial or volcanic soil = Fertile/rich in minerals
Abundant rainfall and suitable temperature of more than 25°C
(a) Before the rainy season, farmers build and repair bunds to separate and retain water in rice fields. At the same time, sowing of rice seeds in the nursery begins.
(b) Rainy season arrives and ploughing is done with water buffaloes or tractors.
(c) Transplanting the seedlings from the nursery to the main field in neat rows.
Bunds Close up of a bund
Ploughing by tractorsPloughing by water buffaloes
- Irrigation is practised in areas where rainfall is not adequate.
- Fertilisers are added to increase nutrients for the rice plants.
- Use of pesticides and herbicides to kill pests and weeds respectively. If left alone, the weeds would use up the soil nutrients.
- Rice fields are kept flooded during the entire growing season.
Growing rice seeds into seedlings in the nursery
Transplanting seedlings into the main field in neat rows
(e) When dry season arrives, bunds are broken to let the water drain off.
(f) Harvesting is carried out manually using a sickle or through use of machines such as combine harvesters (tools).
Beginning of Rainy season in Asia – October to December
Rainy season in Asia– January to March
Beginning of dry season in Asia – April to June
Lets look at text page 52 fig 7.10.
Qn: What kind of settlement pattern do you think Udon Thani has?
Some questions:
1.Why is repairing of bunds done before rainy season?
2.Why transplanting needs to be done in neat rows?
3.Why must harvesting be done in dry season?
High Tech farmingUse modern tech (pg57)
1. Hydroponics (Add nutrient solution using computers) - Water
2. Aeroponics (Spray nutrient solution to roots) - Air
Eg Singapore
Fig 7.21 pg 60
http://www.youtube.com/watch?v=m6o5LTl6GJw
1.What is High-tech Farming?
2.What are the examples of High-tech farming?
3.What are the characteristics of High-tech Farming?
Relief
Soil
Fertiliser
Tools
Capital
Seeds
Pesticides / Herbicides
Labour
Sunlight/ Rainfall High temperature , high rainfall, high humidity
Inputs
Flat land
Soiless / Soil
Organic fertiliser
High tech
Highest
HYVs
Yes & No (Organic)
Educated & skilled workers
The use of modern science and technology to obtain high quantity and high quality outputs.
Usually take place around densely populated urban areas where land is limited and costly.
•Chemical fertilisers - adding essential nutrients for crops to grow well and fast
•Irrigation - getting water from rivers though canals and supplying water to the crops through automated sprinklers at regular intervals
•High-technology - using machines, refrigerated vehicles, computers and Research & Development to raise production
Automated sprinklers
High-tech poultry farm
Hydroponics – plants are grown in a trough filled with a nutrient solution instead of soil.
Aeroponics – roots of the plants are suspended in the air and nutrient solution is sprayed onto the roots at preset intervals.
The greenhouse is covered with a layer of netting to prevent pests. The temperature and moisture in the greenhouse is carefully controlled through computers.
Netting
Aeroponics
High Yielding Variety Seeds (HYV)
•Genetically enhanced seeds
•Increased growth speed
•To increase crop yield
•Resistant to disease
•Expensive
•Eg maize, wheat, rice
Spraying pesticides using aircraft
Spotlight to speed up growing process
AGRICULTURE IN SINGAPORE
Where does some of the food found in our local markets come from?
- Singapore produces only a small proportion of its food locally.
- Most of our food is imported from countries such as Malaysia, Indonesia, Thailand, China and Australia.
How many percent of Singapore’s land area is used for farming?
1.6% of the total land area (692 sq km)
Why agriculture in Singapore has shown a decline in importance over the years?
- Land shortage and competition for land to meet residential, transport, commercial and industrial needs.
- Shortage of labour – Singaporeans are unwilling to work in farms.
What did Singapore do to increase our
own food production?- Setting up Agrotechnology parks to
practise high-tech farming - 6 Agrotechnology parks
- They house hundreds of farms producing vegetables, livestock, fruits, eggs, milk, fish, orchids for sale locally and abroad.
Plantation agricultureGrow 1 type of crop for money
1. Cultivation of oil palm
2. Processing for commercial purpose
Eg Malaysia
Fig 7.11 pg 54
http://www.youtube.com/watch?v=NYfM9R8JZo8&feature=related
1.What is Plantation Agriculture?
2.Where is it practised in the world?
3.How does oil palm plantation farmers carry out the cycle of activities?
4.What are the characteristics of Plantation Agriculture?
Commercial cultivation of cash crops (normally monocrop) on large estates of more than 40ha under favourable climatic conditions
High annual rainfall and high annual temperature
Found in the tropical regions in Asia, South America and Africa
Relief
Soil
Fertiliser
Tools
Capital
Seeds
Pesticides / Herbicides
Labour
Sunlight/ Rainfall High temperature , high rainfall, high humidity
Inputs
Flat land
Fertile
Chemical fertiliser
Intermediate
Higher
HYVs
Yes
A lot of hired labourers
Processes - Growing oil palm
1) Germination (grow)
~ in small plastic bags in pre-nursery
beds
2) Transplanting
~ after 8 weeks/ 2 months
~ seedlings transplanted to nursery
~ irrigation & weeding – done manually
Oil Palm Plantation
Tea Plantation
Processes - Growing oil palm
3) Growing in main fields
~ after 9 months
~ seedlings arranged in rows
~ growing cover crops between
rows of oil palm eg. legumes to prevent
soil erosion
~ weeding & adding fertilisers
The oil palm fruit Using a long-handled chisel to remove the fruits
Processes - Growing oil palm
4) Harvesting~ after the 3rd or 4th year – bear
1st fruits~ harvest once in 10 days (10 -20 years – perennial crops)~ use a chisel fitted to a wooden
pole
Refinery of palm oilAt the Processing Factory
Processing of oil palm
Done on the oil palm plantation itself Fruits must be quickly transported to
the factory – delay in processing – poor oil quality – less oil will be extracted from fruit bunches
Outputs of oil palm plantation
oil palm fruit crude palm oil palm kernal oil
palm kernal cake - made into animal feed
As raw materials for soap, margarine, cooking oil
Lets try to guess the order of a standard farming process…
1. Ploughing
2. Sowing5. Harvesting
4. Fertilising 3. Irrigating
URPOSE.. Intention/reason
NPUT… Resources put in
ARIETY…Type produced
UTPUT… What’s produced
ECHNOLOGY…Machines/tools
P
I
V
O
T
PURPOSEFactors Subsistence
FarmingCommercial Farming
Land size Small plot of land Large plot of land
Labour type Family members Hired workers
Capital cost Low capital input High capital input
Types of fertilisers
Natural fertilisers Chemical fertilisers
Tools/machines
Traditional tools/machines
High technology tools/machines
Level of technology
Low level High level
Output For own use For sale
PURPOSE.. Intention/reason
Commercial
-Majority of produce to be sold for $$$ in market
Subsistence
-Consumption for the family
INPUT… Resources put in
Human*Manmade itemsFertiliser ( Nutrients for growth)Farming tools (eg machines)Capital (money invested)Seeds Pesticides (kill crop pests )Herbicides (kill unwanted plants eg weeds)Labour (workers in the farm)
Physical *Natural features of EarthSunlightRainfall (Water the crops)Relief (gradient of land eg Flat land)Soil (Arable/fertile)
ImportantText pg 43Memorize these 11 inputs
High input per unit area
Eg High capital, HYV seeds, hired workers
Wet rice – commercial, plantation, high tech
Extensive
Input per unit areaIntensive
Low input per unit area
Eg Little capital, seeds from previous harvest, family members
Wet rice – traditional, shifting ( uses small area at a time)
Fixed area
vs
IntensiveExtensive
Different area
vs
Low input per unit area
Larger land area
Plantation, Shifting (over many years use up a lot of area)
High input per unit area
Smaller land area
High tech farming
VARIETY…Type produced
Monoculture1 type of crop
Different varieties
Eg Maize, rice, veg, fruits
OUTPUT… What’s producedKeywords
•Big/Small quantity of output
•High/Low amount of output
•Double/triple cropping (grow 2/3 times of crops in same space during growing season)
•High/Low quality of yield
TECHNOLOGYSimple Complicated
•Natural fertiliser (animal manure)
•Seeds from previous harvests
•Chemical fertiliser (expensive)
•High yielding variety seeds (genetically enhanced seeds = More resistance to pests & diseases, grow faster)
•Machines eg tractors
•Irrigation facilities (watering of soil in dry areas /when no rainfall)
•Dams/drainage canals (Control water supply)
SicklesDribbling sticks
Plough Machetes
Shifting Agriculture
Wet Rice Agriculture (Traditional)
Wet Rice Agriculture (Commercial)
Plantation Agriculture
High-Technology farming
Subsistence Subsistence Commercial
-Sale in local & overseas markets
Eg Export Rice
Commercial
- Exports
- Raw materials for local markets
Commercial
PURPOSE
Shifting Agriculture
Wet Rice Agriculture (Traditional)
Wet Rice Agriculture (Commercial)
Plantation Agriculture
High-Technology farming
- Low input/unit area
- Extensive
- Low input/unit area
- Extensive
- High input/unit area
- Intensive
- High input/unit area
-Intensive
-High input/unit area
- Intensive
INPUT
Inputs/ Resources
Shifting Agriculture
Wet Rice Agriculture (Traditional)
Wet Rice Agriculture (Commercial)
Plantation Agriculture
High-Technology farming
Sunlight/ Rainfall
High temperature , high rainfall, high humidity e.g. tropical countries like Thailand, Malaysia, India
Relief Flat land Cut terraces onto slopes to create flat land
Flat land Flat land
Soil Infertile after few years
Clayey soil, Flooded rice fields, Fertile alluvial soil
Fertile Soiless / Soil
Fertiliser Burnt veg Animal manure
Chemical fertiliser
Chemical fertiliser
Organic fertiliser
Tools Traditional Basic Intermediate Intermediate High tech
Capital Lowest Low High Higher Highest
Seeds Previous harvests
Previous harvests
Purchased (may be HYVs)
HYVs HYVs
Pesticides / Herbicides
No Little or none
Yes Yes Yes & No (Organic)
Labour Family Family/Some workers
Hired workers A lot of hired labourers
Educated & skilled workers
Shifting Agriculture
Wet Rice Agriculture (Traditional)
Wet Rice Agriculture (Commercial)
Plantation Agriculture
High-Technology farming
Rice, vegetables, sugar cane, bananas, maize, sweet potatoes
Mainly Rice, with some variety of vegetables & fruits
Only Rice Monoculture, Cash crops, Raw materials eg Oil palm/rubber
Organic & healthier vegetables, Orchids farm, Fish farm
VARIETY
Shifting Agriculture
Wet Rice Agriculture (Traditional)
Wet Rice Agriculture (Commercial)
Plantation Agriculture
High-Technology farming
Very small -enough to feed family only
Small -1 crop/year-Vegetable & fruits to supplement
Large
-Double to triple cropping
High quality & quantity yield
(major export)
Very high quality yield-Organic
(A lot of capital put in for R&D)
OUTPUT
Shifting cultivation
Plantation Agriculture
High Tech FarmingWet Rice (Commercial)
Wet Rice (Traditional)
Quiz time:
Name the agriculture type that produces this crop
Shifting cultivation
Plantation Agriculture
High Tech FarmingWet Rice (Commercial)
Wet Rice (Traditional)
Quiz time:
Name the agriculture type that uses this technology
Shifting Agriculture
Wet Rice Agriculture (Traditional)
Wet Rice Agriculture (Commercial)
Plantation Agriculture
High-Technology farming
Traditional
-Simple tools
Eg Dribbling sticks, machetes, sickles
Basic
-Wooden plough drawn by buffalo, sickle, animal manure
Intermediate
-Irrigation, dams, drainage canals,
-HYVs
-Fertilisers/ pesticides
Intermediate
-Fertilisers/ Pesticides
-HYVs
- Machinery
High Tech
-Computers
-R&D
TECHNOLOGY
Lets think further What are some of the advantages of each
type of farming? Do you think farmers might change their
type of farming? What can they do in their farms to
improve the outputs? Brainstorm for questions that might
come out in the CA.
Class activity
You are tour guides that will be bringing a group of Xinmin students on a tour around the farm.Prepare as much information about the farm using your textbook and general knowledge on the materials provided. :(One guide to answer one question) Your presentation should include
1. What is the farming process? Describe it briefly.
2. What is the purpose of this type of farming? Why? Hint: Subsistence or Commercial
3. What type of resources (input) are needed in the farm?
4. What crops are produced (variety/output)?
5. What tools (technology) are being used?
Revision for Agriculture
Shifting Cultivation Wet rice (traditional) Wet rice (Commercial) High tech farming
What are the INPUTS for this type of farming?
Explain the PROCESS for this farm type
What are the examples of OUTPUTS for this type of farming?
What are some of the differences between the 3 types of farming?
What are some of the similarities between the 3 types of farming?