BIOL 1070 Lecture Notes - Lecture 1: Sweet Potato, Manorialism, Soil Fertility

• School: University of Guelph
• Department: Biology
• Course: BIOL 1070
• Professor: Aaron Fazekas

Document Summary

History of agriculture practices; 1500 to present. Advances and increased production (keeping pace with world population increases) Relationship between agriculture practices/production and environmental impacts and issues. World population reached 1 billion in 1804. Late medieval farming subsistence-based, conducted by a predominantly rural population. Changes began with switch from feudal society (manorialism) to farmers owning land. Transition to commercial or money-based farm market economy. Doubling of population primarily associated with doubling of land cleared for agriculture. Asian new crops maize, potato, sweet potato, peanut. More frequent cropping less time in fallo bw or pasture. The second billion 1825 to 1927 (cid:1005)(cid:1006)(cid:1007) years later world pop"n rea(cid:272)hed (cid:1006) (cid:271)illion in 1927. Increased caloric intake from 2000 to 3000 calories; increased animal protein intake. Expansion rather than intensification of agriculture responsible for increased production. Increased arable land area esp russia and north america. 1870-(cid:1005)9(cid:1006)(cid:1004)= world pop"n in(cid:272)reased (cid:1008)(cid:1004)% ara(cid:271)le land in(cid:272)reased 7(cid:1009)%