2. Avoid Fall Tillage |
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Avoiding fall tillage can make a key difference in controlling
erosion.
Even if you end up tilling in the spring, you can buy yourself
six to eight months of additional soil protection by not tilling
in the fall. Chisel plowing in the fall can bury 40 to 70 percent
of soybean residue and 30 to 50 percent of corn residue.
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One
reason fall tillage is done is to combat soil compaction. But before
considering deep tillage, make sure your soil is actually compacted.
Know the signs: Reduced soil drainage, slow crop growth and root development,
increased plant injury from some soil-applied herbicides, deformed
or flattened roots, and poor soil structure. |
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Avoiding
tillage entirely—in both the fall and spring—remains a
growing trend. In the face of a 5. 4 million-acre decline in total
cropland during 1995, no-till was the only production system to gain
acreage nationwide. In fact, no-till is approaching conventional tillage
as the most common tillage system for soybeans. |
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No-till
corn dropped off a little in 1995, but not as much as conventional
tillage, reduced-till, mulch-till, and ridge-till. |
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Illinois
was the leading state for no-till soybeans with 3.2 million acres
in 1995, and it ranked second in no-till corn with 1.8 million acres.
The growth and success of no-till may be due to lower production costs,
improved planters and drills, a lower capital investment in equipment,
better herbicides, the desire to control erosion, and the need to
meet conservation plan goals. |
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