Answers
1. open virgin soils to cultivation
for crop use we must provide nitrogen, 2. N-fixing plants --legumes symbiosis with rhizobia
what does this include? 3. recycle organic wastes
4. import nutrients from other places
, Chilean nitrate water
the Santa Maria school massacre
-pre and post give way agriculture ground in prone to erosion, soil loss etc.
open virgin soils to cultivation -think providence canyon, this was created due to years and years of
mismanagement of farm ground.
nitrogen fixing plants --legumes
recycle organic wastes -night soil (poop!)
-1804-1880
-this is the first example of importing nutrients
from other places
the age of Guano
-the chincha islands were a place for birds to
reproduce and migrate for a long time so it had
lots of nutrients.
-1856, this was the first time the US was territorial aggressiveness
-gauano islands, we said if no one else owned it and it had bird poop mean we then
U.S island territories in the pacific ocean
"owned it"
-there were 11 and we still have 7 of them
book to read for fun alchemy of air
-Mineable fertilizer,
-Chile ended up in control of the nitrate fields
sodium nitrate was the first...
the Tennessee valley authority and fertilizer -1930s made by the TVA
development -they developed slow release fertilizer (1950s)
-has a guaranteed analysis
-this is the minimum level of fertilizer nutrients expressed as a percentage
fertilizer basic definition -also tells us the source of the fertilizer nutrients
-contrains fertilizer nutrients
-not a growth amendment or stimulant
1. % nutrient in the bag
what does a guaranteed analysis tell you
2. where those nutrients come from
guaranteed analysis is a____ mandated state
minimum nutrient content in fertilizer
the P and K is reported as _____ and ______ P2O5, K2O
because it is our old method of analysis
-soluble
classes of nitrogen containing fertilizers -slow release
-other fertilizers: bio enhanced, microbial mediated, etc.
-has 30% calcium
what does 0-0-0 have in it
-derrived for calcium carbonate (lime)