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APRIL 2019
www.irishfarmersmonthly.com
Management Hints
55
Apply approx.. 100 units of N, discounting for
some residual N, with appropriate P and K
ACTIVELY MANAGE 2ND ROTATION:
X
After the spring we have had most farmers should finish
the first rotation between 1st and 12th April (wet land).
X
On many farms covers are low, approximately 1,000
Kgs DM, on the early paddocks of the second rotation
because;
Poor growth rates or not grazed early enough
and/or many paddocks suffered some soil
compaction/poaching damage
Too much ground grazed after 10th March.
X
This will result in farmers grazing the second rotation
too fast due to low covers.
X
The first paddocks of the second rotation should not be
grazed in the third rotation until after 25th April:
They need 25 to 30 days to regrow because
growth rates in April will average to 40-50 Kgs
DM per day.
Therefore, do not let this rotation become too
short.
X
To provide quality grass and be able to graze out
paddocks correctly:
It is essential to go into grass covers of 1,300-
1,500 Kgs DM per hectare.
However, the pre-grazing covers (PGC) for
anyone on 4.7 cows/ha should be 1700kgs/ha
that from 20th April on.
Very low stocked farms should go into lower
covers.
X
Poached or damaged paddocks; make absolutely certain
to graze on a dry day.
X
Under grazed paddocks on 1st rotation should be
grazed out tight this time to encourage tillering and set
them up for the summer.
X
You are advised to graze out to 4cm or less at this time
Every 1 cm post grazing grass left after grazing
represents 250 kgs DM/ha grass, which will rot.
If you leave 200 Kgs of grass DM/ha (many
farmers leaving a lot more) in the paddock
after the cows have grazed, that is the same as
throwing 200 Kgs meal (= 55) down the drain
because that grass will have rotted away by next
grazing.
If you leave 1cm too much after each grazing, that
comes to 2 ton DM/ha lost during the year.
X
Over 110 units/acre of N must have been applied to
every acre on the farm by early April.
Therefore, apply 40 units N/acre in early April. It
required because a lot of grass grew this spring
using up a lot of N and we will run into grass
shortage because of low levels on N available and
poor tillering
Urea is the cheapest source but some farmers
have a confused ignorance that CAN is better-
not so!
X
Use Nitrogen to match your stocking rate during
April/May as follows:
APRIL 2019
Management Hints
www.irishfarmersmonthly.com