USA HISTORY

Detailed explanation-1: -Slash and burn agriculture is a widely used method of growing food in which wild or forested land is clear cut and any remaining vegetation burned. The resulting layer of ash provides the newly-cleared land with a nutrient-rich layer to help fertilize crops.

Detailed explanation-2: -Slash-and-burn had an important place in the colonisation of the North and in the development of Nordic culture and economy. It was practised in areas of central and southern Sweden well into the 20th century.

Detailed explanation-3: -Shifting cultivation, better known as slash and burn agriculture, is bad for the environment as it accelerates deforestation, burning down forests to make way for farmlands. In addition, by burning the forests, shifting cultivation robbed the soil of its nutrients, rendering it infertile in the process.

Detailed explanation-4: -Milpa has been widely related with slash-and-burn farming, which today is considered an unsustainable practice that decreases soil fertility in the long term. Particularly, burning increases soil pH and drastically decreases soil organic matter, which was confirmed in the present study.