Farmer’s Weekly – 30 August 2019

(Amelia) #1

COMMUNALFARMING


BYSHANEBRODY


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In ‘rich’ environments


with plenty of moisture,


pastures are very


attractive to ticks


and organisms that


cause conditions


such as foot rot.


Pasture and livestock


management


K

now the correct season for the
planting of pasture crops; know
too there are parts of South Africa
that could be exceptions to the rule. For
example, rye grass is hardy when it comes
to frost, but does not do well in regions
where temperatures get very high. Obtain
expert advice when buying seed.


  • Seeding depth and density
    There are quite a few factors to consider
    when planting seed, but, on average,
    seed should be planted about 5mm
    under the soil surface. Most pasture
    seeds can be planted with maize or
    wheat planters (just ensure the seed exit
    settings are set correctly), but I’ve found
    a hand-held seed spreader works very
    well with fine seeds, such as lucerne and
    clover, particularly on smaller lands.

  • Planting
    Hand spreaders have a bag that holds the
    seed and a hand-turning mechanism that
    sprays the seed in a semi-circle in front
    of you. They’re great, and affordable, for
    communities without seed planters.
    Remember, however, seeds planted in
    this manner need to be covered because
    they’re left on the soil surface. There
    are numerous ways of doing this if you
    don’t have a multitine drag harrow.
    I’ve seen a large thorn tree branch
    used or even a few car tyres linked
    to one another and dragged
    over the seeded surface.

  • Pasture management
    For the first month or two, keep the
    planted pasture moist and beware of
    flood irrigation before the seed shoots
    have shown above the ground surface.
    If you only have flood irrigation at your
    disposal, try to ensure the water doesn’t
    flow too swiftly. This might wash a large
    number of your seeds from the soil.

  • Pasture and livestock maintenance
    Don’t keep livestock on pastures all
    of the time as they will usually eat as
    much as they can utilise in a day within
    two to six hours. Have an area near
    the pastures where dry matter such as
    bailed hay or lucerne can be fed ad lib.
    Only allow livestock to graze
    on pastures about one day after
    irrigating the area, because livestock


walking on muddy surfaces can
compact the soil surface too
much and damage plants.
In summer, sprinkler or pivot-type
irrigation pastures will need about
50mm of water each irrigation session;
about 25mm in spring and autumn; and
about 10mm to 12mm during winter.
Note that 50mm of water is quite a
lot and, if you use sprinklers, would
constitute quite a few hours of watering.
With pastures containing ryegrass,
lucerne, Smuts finger or clover, lightly
top dress (spread fertiliser on the surface)
with nitrogen at 20kg/ha to 25kg/ ha
every six months. Then irrigate well as
the nitrogen might burn the plants.


  • Livestock maintenance
    Because of the ‘rich’ environment,
    with plenty of moisture, pastures
    are very attractive to parasites such
    as ticks and organisms that cause
    conditions such as foot rot.
    As noted, animals grazing
    on pastures should have access to dry
    matter. It’s also important that sheep,
    and particularly lambs, are vaccinated
    with a broad spectrum vaccine at
    no later than six weeks of age.


PULPY KIDNEY DISEASE
Under these pasture conditions,
lambs are prone to pulpy kidney
disease, as well as internal parasites.
Always be on the lookout for diarrhoea
in lambs, and take dung samples for
parasite testing every two months or so.
When you have dewormed livestock
grazing on pastures, try keeping them
off the pastures for at least seven days so
they can drop the worm load affecting
them away from the pastures.
Dip according to visible prevalence of

ticks and other external parasites. (^) ▪FW
BE ON THE LOOKOUT
FOR DIARRHOEA IN
LAMBS AND TAKE
DUNG SAMPLES FOR
PARASITE TESTING
28 farmer’sweekly 30 AUGUST 2019

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