Crop Nutrient Management Facts

Crop Nutrient Management Facts

What is it?

It is a system of crop production with little, if any, tillage. It increases the residue from the crop that
remains in the field after harvest through planting. This results in increased natural recycling of crop residues.

  • Used on 38% (109 million acres) of all U.S. cropland (293 million planted acres).
  • Goal is 50% (146 million acres) of the planted cropland in the U.S. by 2004.

Where is the use of conservation tillage expected to increase?

  • Conservation tillage soybean acres are expected to increase rapidly.
  • Wheat and cotton acres will also increase significantly the next five years.
  • Corn acres are expected to remain steady until technological and/or management research
    helps farmers overcome challenges.

How does it help create better soil?

 
By leaving crop residue undisturbed for as long as possible, microbial and other biological
activity in the soil feeds on the stalks, leaves and other crop residues. This increases organic matter,
improves soil tilth and, ultimately increases soil productivity.

Why is soil quality important?

Better soil retains more moisture for dry periods, yet the improved structure speeds natural infiltration in wet spots.

  • In the Great Plains, continuous no-till conserves 2-4" of soil moisture
    annually when compared to intensive tillage systems.
  • In other areas, it improves water infiltration after the soil reaches its
    maximum water holding capacity.
  • The improved soil structure also reduces compaction enabling plant roots
    to be stronger, healthier.

Cleaner water

Soil erosion can be reduced by 90% (compared to intensive tillage). While we have
long thought of soil erosion as reducing top soil, we now know it's one of the
top ‘pollutants’ in America’s waters.
  • Reducing soil erosion also reduces phosphorous and can
    reduce pesticide movement.
  • Reductions in phosphorous result in reductions in algae and
    increase oxygen supplies for fish.
  • Reduces risk of nutrient escape the soil by increasing nutrient
    availability and uptake by plant roots.
  • Converts any escape of crop protection products into carbon
    and other basic components.
     

Can Conservation Tillage really provide "Greater Profits?"

Certainly, every situation, every manager and every growing season impacts
profitability. The more risk is reduced, the better the opportunity in increased
profitability. The conservation tillage system reduces labor, equipment costs,
and fuel use, particularly when no-till, one type of conservation tillage, is used.

The bottom line?

If a grower wants to make a conservation tillage system work and has the
fortitude to make the necessary changes in crop production management, it can provide greater profits. 

  • No-till soybean production normally increases profit per acre.
  • No-till wheat improves rotation diversity providing more crop flexibility
    and greater profits over the entire rotation period.
  • No-till cotton can also increase profit per acre. This will become more apparent
    as ginners improve their ability to gin stripper harvested cotton.

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