World Grain - August 2021 - 27

selves. However, Madden said he's spoken with growers
who've seen mice that aren't following this cycle.
" Mice were following planters and digging up and eating
the grain, " he said. " I heard about a contractor who
was planting canola but said the mice were digging up
the seed as soon as it was planted, so much so he rang the
farmer to ask if he wanted him to continue. It's a $100-perhectare
exercise by the time you factor in the cost of seed,
contractor costs, etc. You need to do something. "
Madden said these conditions forced growers in
NSW to rethink how they combat mouse plagues by
using pre-emptive baiting ahead of planting to protect
their crops. He added that baiting costs the grower between
$14 and $17 per hectare, but this was worth protecting
the investment in planting.
" People are baiting in my district this week (early
July) after they've seen mouse holes in fields and damage
to mung bean crops, " Madden said.
Madden said he was concerned that if numbers were
left unchecked over winter, the mouse population
would rebound to an even larger number in the spring,
particularly since another good grain crop is expected.
He said farmers in Victoria and South Australia had
adjusted to a reality where they experienced mouse
plagues every two to three years. He said they had bait
available so they could control mice before the population
spirals out of control.
However, Madden conceded that despite growers'
best efforts to control mice numbers, a plague was possible
next season due to the expected bumper crop.
Looking to the future, Nelson said the GRDC and
CSIRO were partnering to understand how to better
control mice. This includes examining how effective
zinc phosphate rodenticide bait is when alternative
food was present. They also flagged research into understanding
mouse biology and ecology in zero and no
till cropping systems to guide best management practice
strategies. Nelson also said they will look at improving
surveillance and management options for mice in cropping
operations.
Chris Gillies is a freelance writer based in Sydney, Australia.
He may be reached at chris.gillies@jamtincopy.com.au.
We want to hear from you - Send comments and inquiries
to worldgrain@sosland.com. For reprints of WG articles,
email reprints@sosland.com.
EXPERIENCE
THE DIFFERENCE
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aggrowth.com
27

World Grain - August 2021

Table of Contents for the Digital Edition of World Grain - August 2021

World Grain - August 2021 - Intro
World Grain - August 2021 - 1
World Grain - August 2021 - 2
World Grain - August 2021 - 3
World Grain - August 2021 - 4
World Grain - August 2021 - 5
World Grain - August 2021 - 6
World Grain - August 2021 - 7
World Grain - August 2021 - 8
World Grain - August 2021 - 9
World Grain - August 2021 - 10
World Grain - August 2021 - 11
World Grain - August 2021 - 12
World Grain - August 2021 - 13
World Grain - August 2021 - 14
World Grain - August 2021 - 15
World Grain - August 2021 - 16
World Grain - August 2021 - 17
World Grain - August 2021 - 18
World Grain - August 2021 - 19
World Grain - August 2021 - 20
World Grain - August 2021 - 21
World Grain - August 2021 - 22
World Grain - August 2021 - 23
World Grain - August 2021 - 24
World Grain - August 2021 - 25
World Grain - August 2021 - 26
World Grain - August 2021 - 27
World Grain - August 2021 - 28
World Grain - August 2021 - 29
World Grain - August 2021 - 30
World Grain - August 2021 - 31
World Grain - August 2021 - 32
World Grain - August 2021 - 33
World Grain - August 2021 - 34
World Grain - August 2021 - 35
World Grain - August 2021 - 36
World Grain - August 2021 - 37
World Grain - August 2021 - 38
World Grain - August 2021 - 39
World Grain - August 2021 - 40
World Grain - August 2021 - 41
World Grain - August 2021 - 42
World Grain - August 2021 - 43
World Grain - August 2021 - 44
World Grain - August 2021 - 45
World Grain - August 2021 - 46
World Grain - August 2021 - 47
World Grain - August 2021 - 48
World Grain - August 2021 - 49
World Grain - August 2021 - 50
World Grain - August 2021 - 51
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World Grain - August 2021 - 53
World Grain - August 2021 - 54
World Grain - August 2021 - 55
World Grain - August 2021 - 56
World Grain - August 2021 - 57
World Grain - August 2021 - 58
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World Grain - August 2021 - 60
World Grain - August 2021 - 61
World Grain - August 2021 - 62
World Grain - August 2021 - 63
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World Grain - August 2021 - 71
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World Grain - August 2021 - 75
World Grain - August 2021 - 76
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