1.
mosquitoes
infections
bullies
illnesses
pimples
insect pests
diseases
weeds
rats
snails

2.
Pest Management
Key Check 7:
No significant yield
loss due to pests
Part 1: Understanding the PalayCheck System

3.
Source of Photos: IRRI
A
B
C
What do you
observe?
Blast damage
Bug damage
Rat damage
What possible effects will A, B, and
C give on yield? To the farmer?

4.
IMPORTANCE OF KEY CHECK 7
KNOW how the rice crop interacts with the biotic factors,
agro-ecosystem, & the crop management system; and
CORRECTLY identify pest & apply ICM
(i.e. resistant variety; date & method of crop establishment;
fertilizer & water management; & pesticide use)
High quality seeds or grains
Uniform
grain size
No seed-
borne pests
Less weed
mixture
No discolo-
ration
Key Check 7: No significant yield loss due to pests.

5.
 No significant yield loss due to pests such as
insects, diseases, weeds, rats, snails, and birds.
 Significant damage occurs when one or more
pests cause damage.
ASSESSMENT OF KEY CHECK 7
H W?
Assessing
damage

6.
ASSESSMENT OF KEY CHECK 7
There is significant yield loss if…
≥ 10% of the area has
missing or snail-damaged
hills at 14 DAT or DAS
SNAILS

7.
ASSESSMENT OF KEY CHECK 7
≥ 5% of the area has
damaged tillers from
maximum tillering
to maturity
There is significant yield loss if…
RATS

8.
ASSESSMENT OF KEY CHECK 7
≥ 10% of the area has
weeds at 15 and/or
30 DAT or DAS
There is significant yield loss if…
WEEDS
BIRDS: ≥ 5% of the area has damaged panicles

9.
Assessment of
KEY CHECK 7
≥ 5 egg-
masses/m2
(nursery/seedbed)
≥ 1 egg-
mass/m2
(mid to max
tillering/EPI)
≥ 30%
deadheart
(early tillering)
≥ 20% whitehead
(flowering to maturity)
Stem borer

10.
none
(nursery/seedbed)
≥ 10 (nymph &
adult); ≥ 20%
deadheart
(early tillering)
≥ 20 (nymph & adult);
≥ 30% deadheart
(mid-max tillering/EPI)
≥ 20 (nymph & adult);
≥ 20% whitehead
(flowering to grain filling)
≥ 20% whitehead
(maturity)
Rice Black Bug
Assessment of
KEY CHECK 7

11.
none
(nursery/seedbed)
≥ 25 all stages of
insect/hill
(early tillering)
≥ 50 all stages of insect/hill
(mid-tillering to flowering)
tolerable
(milk stage-maturity)
Assessment of
KEY CHECK 7
Brown/White-backed
Planthopper

12.
none
(nursery/seedbed to EPI)
negligible
(flowering)
(milk stage)
≥ 5 (nymph & adult)/m2
(grain filling)
≥ 10 (nymph & adult)/m2
tolerable
(maturity)
Assessment of
KEY CHECK 7
Rice Bug

13.
none
(nursery/seedbed )
(early tillering)
≥ 30% of field
infected
(mid-tillering to milking stage)
≥ 50% of field w/ BS
(grain filling to maturity)
≥ 75% of field w/ BS &
10% unfilled grains
Assessment of
KEY CHECK 7
Brown Spot

14.
(nursery/seedbed
to early tillering )
(mid to max tillering)
≥ 30% of field w/ LB
(milking stage to maturity)
≥ 10% of field w/ PB
≥ 20% of seedbed,
field w/ LB
(flowering)
≥ 10% of field
w/ neck blast
Assessment of
KEY CHECK 7
Leaf/Panicle
Blast

15.
(nursery/seedbed
to early tillering )
(mid-tillering to milking stage)
≥ 40% of field w/ ShB
none to negligible
(grain filling to maturity)
≥ 40% of field w/ ShB &
≥10% of unfilled grains
Assessment of
KEY CHECK 7
Sheath Blight

16.
(nursery/seedbed
to early tillering )
(mid-tillering to maturity)
≥ 30% of field w/ BLB seen on flag leaf
(flowering); with w/ undeveloped spikelets
negligible
Assessment of
KEY CHECK 7
Bacterial
Leaf Blight

17.
(nursery/seedbed)
(flowering to maturity)
tolerable
none
(early tillering)
≥ 20% of field w/ RT
(mid to max tillering)
≥ 40% of field w/ RT
Assessment of
KEY CHECK 7
Rice Tungro

18.
In general, here’s how
the pests are at every
growth stage …
Source: IRRI

19.
Recommendations to Achieve KEY CHECK 7
 Use varieties resistant to
pests prevalent in the locality
Mestiso 19 is resistant
to whiteheads
 Adopt a synchronous planting
scheme after 1-month fallow
period in the locality

20.
 Conserve beneficial organisms
 Conduct regular field
monitoring to identify
potential pests
Recommendations to Achieve KEY CHECK 7

21.
 Rats: practice timely,
integrated, & sustained
community-wide control
 GAS: keep field saturated
during early vegetative stage;
construct small canals and
place attractants to facilitate
snail collection; place
wire/bamboo screen at water
in/outlets to prevent field
entry
 Weeds: control within 30 DAT
or 40 DAS; proper land prep &
water mgt; use high quality
seeds
Management
Options for RATS,
GOLDEN APPLE
SNAILS, & WEEDS

22.
 Insect pests: Do not spray
against defoliators w/in the
first 30 DAT or 40 DAS
 Diseases: Diagnose correctly
& practice field sanitation
 Insect pests & diseases:
Avoid too much fertilizer
application, 3 croppings/yr
or short turnaround time, &
unnecessary use of
pesticides
 Birds: scaring away birds is
the only practical solution to
manage them
Management
Options for
INSECT PESTS,
DISEASES, & BIRDS

23.
INPUT
• Use varieties
resistant to
pests in the
locality
• Practice
synchronous
planting
• Conserve
beneficial
organisms
• Conduct regular
field monitoring
OUTPUT
• No significant
yield loss due to
pests
• No significant
damage due to
pests
OUTCOME
• Good grain
quality
• High yield
• High profit
• Minimal
damage to
environment

24.
Pest Management
Key Check 7:
No significant yield
loss due to pests

25.
CREDITS
Instructional presentation designer:
Dr. Karen Eloisa Barroga
Sources of technical content/reviewers of presentation:
Mrs. Anita Antonio, Mr. Genaro Rillon
Note:
Adapted from a powerpoint presentation developed by:
You may use, remix, tweak, For more information, visit:
& build upon this presentation
non-commercially. However, always
use with acknowledgment.
Unless otherwise stated, the names
listed are PhilRice staffers.
Produced in 2011.
Text: 0920-911-1398