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.