Sola ARES-2713, Руководство по эксплуатации, Страница: 10 / 40

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4. ESSENTIAL SOWING CONCEPTS
4.1 TERRAIN
THE BETTER THE SOIL CONDITION, THE BET-
TER THE SOWING QUALITY. WORK IS MORE
DIFFICULT ON BIG CLODS OR UNEVEN FUR-
ROWS. ALTHOUGH
SOLÀ
MACHINES RESIST
HARSH CONDITIONS, IF THE SEEDBED DOES
NOT SATISFY APPROPRIATE CONDITIONS
THEN THE SOWING QUALITY WILL SUFFER.
4.2 THE SEED
IT IS ESSENTIAL THAT SEEDS ARE WELL MAIN-
TAINED AND CLEAN. BARLEY SEEDS SHOULD
BE TRIMMED.
4.3 SEED PLANTING DEPTH
THE RECOMMENDED SEED PLANTING
DEPTHS ARE FROM 3 TO 5 CENTIMETRES.
PLANTING TOO DEEP CAUSES PROBLEMS AS
RHIZOME CANNOT REACH THE SURFACE AND
THE PLANT WILL DIE. IT DOES NOT MATTER
THAT SOME GRAINS ARE VISIBLE BECAUSE
THE HARROW’S. TINES WILL COVER THEM
EVENTUALLY.
The seed planting depth has consequences for tillering, as
well as for the plant’s strength and its ability to resist frost-
bite or drought. The parent shoot grows from 1 to 2 cm un-
der the ground, whatever the depth of the seed.
Planting deeper does not necessarily mean getting deeper
roots. Only a few roots grow from the lower part of the seed.
Most of them grow from a parent shoot close to ground level.
Tillering node
SEED
Normal Planting Depth: from 2 to 4 cm
• Thick stem, short rhizome and resistant to frostbite.
• Multiple tillering providing from 3 to 6 shoots and a lot of
blades, from 6 to 10.
• Deep and thick roots, approximately 5 cm in width and 10-
12 cm in depth.
• With less grains per sowing square metre, more ears are ob-
tained.
SEED
Rhizome
Tillering node
Deeper Planting: from 5 to 6 cm
• Fine stem, rhizome exposed to frostbite.
• Late and weak tillering, 1 or zero shoots and only a few
blades, 3-4 aprox.
• Medium quality roots of approximately 3 cm in width and
5 cm in depth.
• More grains per sowing square metre are required to ob-
tain the same number of ears as in the previous case.
SEED
Tillering node
Rhizome
Very deep planting: from 8 to 10 cm
• Very fine stem. No tillering and only one blade.
• Seed runs out of supplies by growing a long rhizome
which frostbite can easily cut.
• The plant takes weak roots, approximately 1 cm in width
and 3 cm in depth.
• Twice the number of grains per sowing metre are required
to obtain the same number of ears as in the first case.