AGRI 31 - Intro to Crop Science

Lecture to bebs EXAM NA SA 20!

Agriculture

Agriculture

• systematic raising of useful plants and livestock under the management of man;

• the entire system that links the producers and consumers of food and non-food agricultural products.

ager

field

Cultura

cultivation

food

basic human need

Percentage of dependency directly or indirectly on agriculture for their livelihood

3 out of 4 people

Effects of Changing environments

• Urbanization and other land uses

• Decreasing the amount of arable land

• Decreasing number of people engaged in agriculture

10 - 15 Thousand Years before present

Start of agriculture

Theories on why did agriculture start

• As a divine gift

• As a discovery

• As a result of stress

• As an extension of gathering

Where did agriculture start?

China, India, Central Asia, Near East, Mediterranean, Ethiopia, Mesoamerica, South America such as Andes of Peru, Ecuador, Bolivia, Chile, Paraguay and Brazil

Origins of Agriculture

Can be found thru:

• Living Plants

• Archeological Finds

• Pottery

• Literature

  • History

What type of plants?

• Thrive in disturbed areas

• Short Life cycle

• High competitive ability

Elements to start Agri

• Plants

• Man

• Environment

Cultivation

encouragement of growth

Domesticcation

selection of particularly useful plants

Plants Cultivated

• Cereals

• Legumes

Cereals

for energy

Legumes

for proteins

Abaca

Musa textilis

Pili

Canarium ovatum

Kapa-kapa

Medinilla magnifica

Jade Vine

Strongylodon macrobotrys

Mussaenda

Mussaenda sp.

Waling-waling

Vanda Sanderiana

Lubi-lubi

Ficus pseudopalma

Duhat

Syzigium cumini