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Re: Since jlmtractor asked a basic question...
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Posted by Paul from MI on April 19, 2007 at 17:14:07 from (66.231.36.33):
In Reply to: Since jlmtractor asked a basic question... posted by Mike CA on April 19, 2007 at 13:21:40:
Generally seeds will not germinate unless they are in tight contact with soil. Plowing loosens the soil and turns under the residue from the previous crop leaving the soil surface bare. Discing breaks up the soil into small particles to give good contact with the soil. It also levels the plowed surface to some extent, although other tools sucha s harrows will do a better job of leveling. Then when seeds are planted either packer wheels or antoher implement such as a cultipacker or roller compact the soil around the seed for good germination. Cultivators were used to remove weeds between the rows of row planted crops, such as corn. Corn was somretimes "check" planted so that cultivation could be done in two directions, thus eliminating weeds in the rows. This is the method used prior to the advent of herbicides in the 1950"s. They eliminated the need for cultivation and allowed plant populations and yields to greatly increase. After the herbicides came "no till" planting which eliminated plowing and discing. Why turn over 40" of soil to plant a seed in 2"? This bring us to the current farming practices, which are variations of these. There are so many different variations that many books could be written, but herbicides made it all possible. Just my opinion and faulty memory, Paul
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