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Transcript of Agricultural Issues
No Till Farming
Method used to plant crops with tools that run through soil
EX. shoveling, raking, using cultivators or plows, etc.
Method used to plant crops without the use of tools which will alter the soil, herbicides can still be used
Till Farming v.s. No Till Farming
No Till Farming
-Reduces labour(save money)
-Reduces fuel, irrigation and machinery
-Reduces carbon emissions
Pros & Cons
-May increase carbon-based
-Reduces labour (less jobs
-Greatens albedo by absorbing less radiation when the moisture is dried by turning over to the top, causing global cooling
-Without tillage, the residues from crops will decompose. If we grow winter cover
crops on top, the carbon loss will be
slowed, and eventually reversed.
(the carbon holds the soil
-Provides monetary grants and rewards to farmers
-Better soil quality (more stable)
-Higher water infiltration rate and capacity
-Increases organism life and biodiversity
-Increases amount of nutrients and water by
-Helps mix nutrients evenly
-Can cause crop diseases if they are harboured in surface residues and then spread due to tilling, which would produce unsellable crops
-Can attract harmful insects
-Loosens the soil, making it easier to plant
-Increases growing potential of poorly drained soil
-Dries the soil before you plant seeds (advantage in wetter climates)
-Herbicides are still used
-Reduces organisms living in the soil
-Dries the soil before seeding (disadvantage in drier climates)
-Causes soil to lose a lot of nutrients (fertilizer, nitrogen), as well as its ability to store water
-More runoff and erosion is caused (slower infiltration rate)
-Increased carbon emissions (est'd that 78 bil.
metric tonnes of carbon that was trapped in
the soil has been released because of tillage)
-Lowers albedo – more global
-May use herbicides