Seed-hawk TOOLBAR 2010 Manuel d'utilisateur télécharger pdf (Page 40)

Seed Hawk Manual Tool Bar Page 37

4.10 CROP RESIDUE CONSIDERATIONS

Seeding into fields with heavy residue is challenging, but residue cover is

essential to the success of a zero-till cropping system. Ideally, the straw height

from the previous year will be less than or equal to the width of the Seed Hawk

Drill row spacing.

For optimum results, the combine should chop the straw and spread the straw

and chaff evenly across the entire swath width. The fertilizer and seed knives will

catch and drag small amounts of crop residue while seeding. Some small clumps

of straw may be deposited along the seed row making the finished seed bed

appear rough.

IMPORTANT: Avoid harrowing after seeding with the Seed Hawk Drill.

Harrowing after seeding can drastically alter seed depth. Although

tempting to harrow to smooth out straw clumps, these clumps will smooth

out over time and exposure to the weather.

Increased humidity will reduce the ease with which the straw will flow around the

knives. Increased humidity near the soil surface is more common during the first

few years of zero-till. This is due to lower soil porosity and infiltration rates. With

time, the soil porosity and infiltration rates will rise, and the humidity will

decrease.

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Seed-hawk TOOLBAR 2010 Manuel d'utilisateur Page 40