Science Unit 5 Lesson 4 Flashcards
What is sustainable agricultrue?
farming that meets current needs while preserving and protecting resources for the future
Sustainable agriculture can help farmers what?
sustainable methods can help farmers produce enough crops while reducing deforestation, erosion, and water usage, and sustaining the land for future farming.
What is agroforestry?
Is a sustainable farming practice, it is the intentional use of trees and shrubs in farming
What are some examples of agroforestry?
One example is planting tall trees to prevent winds from damaging weaker crops.
Another example of agroforestry is introducing cover crops and shrubs to retain water, slow erosion, smother weeds, and improve the health of the soil.
What is the cover crop method?
Cover crop is a method in agroforestry
Introducing cover crops and shrubs to retain water, slow erosion, smother weeds, and improve the health of the soil
What is crop rotation?
Is a sustainable farming practice, it is the planting a different crop each year: a different crop is planted each year allowing the soil time to rebuild its nutrients
What slash and burn?
Mainly used in rainforest regions, farmers burn down vegetation in order to make room to plant crops.
Is slash and burn sustainable?
no
Why would sustainable farmers plant Inga seedlings?
An alternative to slash and burn. These plants shade out weeds and grasses, which creates space and restores the soil.
Where is terrace farming used?
In mountainous regions
What is terrace farming?
A sustinable farming technique where, creating flat steps for farming on slopes of hills or mountains, in heavy precipitation, these steps control the release of water, preventing the soil nutrients and crops from washing away.
What happens if a farmer plants the same crop over again every year?
if farmers plant a single crop in a field over many years, nitrogen and other nutrients in the soil may be reduced, which can cause farmers to rely on commercial fertilizers or cause significantly reduced production in future years.
What is the definition of hydroponics?
is the use of water rather than soil to deliver nutrients to crops, Hydroponics systems use water rather than soil to deliver nutrients to crops. These systems use only 5 to 30 percent of the water required for conventional farming.
Hydroponics allows farmers to grow crops in hot and dry climates while conserving water and land.
What is alley cropping?
a type of agroforestry in which rows of trees are planted in between rows of crops. it increases biodiversty and maintain the soils nutrients .
What does polyculture mean?
the practice of growing more than one crop in an area of land, helps
maintain the rain forest’s biodiversity. It also reduces the need to clear more farmland.
