Green Revolution
Also known as the agriculutral revolution
Occurred during the 1950s and 60s
This saw the advancement of chemical and fertiliser use. As well as selective breeding and an increase in machniery use and production.
Disadvantages
Increased fertilisers and chemical reliance
More food waste
Higher financial costs
Changed the cause of farming. From need to profits.
Physical land changed due to the chemicals
Not everyone in the world can use updated technology/ chemicals
Advantages
Greatly increased the yield of food.
Stopped millions of people of dying of famine
Created a constant food supply
Countries could then export food and created a profit
Cheaper consumer prices
More food means that less areas would need to be converted into agricultural lands
Mexico
There was a need for wheat however wheat crops were failing due to them having a large stem and windy conditions.
A man named Norman Bourlag wanted to solve this and so went to Japan and sawa shorter stem wheat. In order to bring this to Mexico he developed an genetically modified wheat which used the short stem and large head.
Brazil
Brazil had little agriculture as the soils were extreamly acidic. The green revolution saw the first use of limestone and so could reduce and control the pH.
This even has modern imlications as 25 million tonnes of limestone in 2003/4 were used in Brazil.