AGR 1110 Lecture 1: AGR1110 - Raizada Lecture 1

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13 Feb 2016
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Saturday, February 13, y
AGR1110: Raizada - Lecture 1
Introduction to Subsistence Farmers & to Africa
-Subsistence Agriculture: farmers grow only enough food to feed their families
-Number of poor farmers 2 billion people
-Many farmers size <2 (hectare 100mx100m)
Implications of Subsistence Farmer
-Farmers will grow various plants never one single crop
-Mathematical break down of tax revenue of cost in relation to farmers crop - making
money, food, can feed the livestock
-Federal budget in Uganda is $6.7
-Goal is to generate a profit from the farms empowering local people to generate tax
revenue
Introduction to Africa
Lesson 1: Humans Evolved in Africa
-Evolution occurred in East Africa 2 million years ago
-Small groups of humans left Africa starting 40,000-80,000 years ago
-In Africa all of the human features in the world are there
-Consequences more genetic diversity in Africa then in different continents — since a
large group left together went to one section of the world, they only have those genes
in that area. Where in Africa all of the genes are across Africa
- 250 languages in one small section of Africa if Canada had this many languages
there would be a large miscommunication — difficult govern this diversity in Africa
- Diseases pathogens can jump from primates to humans >99% genetically similar
- AIDS consequences to agriculture n relation to productivity
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Saturday, February 13, y
Lesson 2: Africa and African Nations are Geographically Huge
-Africa can fit, US, Argentina, Western Europe, India and China within itself
-Ontario is a million squared km — many African nations are this size (3 Canadas in
Africa)
-Consequence: Is Africa over-populated? In relation to other countries Africa has the
same amount of population, and Africa has larger land to be spread out amongst
unlike Japan
Left is geographic land size and population
Right is rich countries
-Consequences for Agriculture: there is a potential for a lot of arable land (farmable for
crops) and pasture land for grazing
-Today African has 733 million hectares if arable land
Lesson 3: Africa is the only content to be located dead-centre with respect to the
Equator
-Higher moisture at the equator because of the air flow
-Hot moist air rises to the equator leaving dry air for the subtropics causing deserts
-Consequence for Agriculture: middle of Africa is too wet, and the top and bottom of
Africa are too dry
- Pests and Insects
- Hard to store crops
- Erosion
Too Little Rain: no water, no crops — no pasture for livestock
Too Much Rain: human/livestock disease, soil, post-harvest
-Too much rain — insects can reproduce and spread disease e.g malaria parasite
Plasmodium falciparum spread by mosquitoes
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