Rice Insect Pest Management by Ecological

Engineering in Farmers’ Fields in Nueva Ecija,

Philippines

GS Arida, LV Marquez, BS Punzal and J Settele

LEGATO Conference, Banaue, Philippines August 5-11, 2016

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FREQUENCY OF INSECTICIDE SPRAY

CAR I II III IVA

IVB V VI VII VIII

IX X XII XIII ARMM

Frequency of insecticide application of rice farmers in the

Philippines. 2015 Wet season and 2016 Dry.

Location of Study

Farmers’ field in Munoz and Sto. Domingo, Nueva

Ecija during the wet season of 2015 and dry season of

2016. Two fields in each site were selected, one close

to flowering plants and the other without flowering plants.

Title of Study: Rice Insect Pest Management by Ecological

Engineering in Farmers’ Fields in Nueva Ecija, Philippines

Plant Nursery

Sto. Domingo, Nueva Ecija

With Flowering Plants No Flowering Plants

•Blower vac-suction and sweep net

were used for sampling arthropods. Ten

samples were collected by blow-vac

suction machine and ten sweeps using

sweep net along a diagonal line per

field replicated 4 times per field during

tillering, maximum tillering and booting stages.

Yellow sticky traps were installed at 30,

45 and 60 DAT and collected 3 days

after installation. Four traps were installed per field.

All the arthropods collected in the blow-vac suction

machine, sweep net and sticky traps were identified and counted in the laboratory.

Damage due to defoliators was recorded at 60 day

safter transplanting in 10 randomly selected hills and replicated 4 times.

Rice leaffolder

Deadheart

Whitehead

Stem borer damage (whitehead) was

recorded in 10 randomly selected hills replicated 4 times at one week before harvest.

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Tillering Max. tillering Booting

Art

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Crop Growth Stage

With FP Without FP

Population of important arthropod functional groups in fields

with and without flowering plants (FP). Munoz, Nueva Ecija. 2015 Wet season.

Population of important arthropod groups in fields with

and without flowering plants (FP).Sto. Domingo, Nueva Ecija. 2015 Wet season.

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rbvvo

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Tillering Max. Tillering Booting

Art

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(N

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Crop Growth Stage

With FP Without FP

1,0

6,0

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4,0

5,0

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7,0

8,0

With FP Without FP

Wh

ote

he

ad

(%

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TREATMENT

Damage (mean ±SE) due to stem borer one week

before harvest rice field with and without lowering

plants. Sto. Domingo, Nueva Ecija. 2015 Wet

season

3,80

8,60

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2

4

6

8

10

12

With FP Without FP

Da

ma

ge

d le

av

es

(%)

TREATMENT

Damage (mean ±SE) due to defoliators at

vegetative stage in rice fields with and without

lowering plants. Munoz, Nueva Ecija. 2015Wet season

3,00

6,30

0,00

1,00

2,00

3,00

4,00

5,00

6,00

7,00

8,00

9,00

10,00

With FP Without FP

Wh

ite

he

ad

(%

)

TREATMENT

Damage (mean ±SE) due to stem borer one week

before harvest in fields with and without lowering

plants. Munoz, Nueva Ecija. 2015 Wet season.

3,80

8,60

0

2

4

6

8

10

12

With FP Without FP

Da

ma

ge

d le

ave

s (%

)

TREATMENT

Damage (mean ±SE) due to defoliators at vegetative

stage in rice fields with and without lowering plants. Munoz, Nueva Ecija. 2015 Wet season.

0

10

20

30

40

50

60

70

Tillering Max.tillering Booting

Pa

rasi

toid

s (N

o/t

rap

)

Crop growth stage

With FP Without FP

Number of parasitoids recorded at different

crop growth stages in fields with and without

flowering plants (FP). Munoz, Nueva Ecija. 2015 Wet season.

0

10

20

30

40

50

60

70

Tillering Max. tillering Booting

Pa

rasi

toid

s (N

o/t

rap

)

Crop growth stage

With FP Without FP

Number of parasitoids recorded at different

crop growth stages in fields with and

without flowering plants (FP). Sto. Domingo, Nueva Ecija. 2015 Wet season.

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

9,0

10,0

With FP Without FP

Da

ma

ge

d le

ave

s (%

)

TREATMENT

Damage (mean ±SE) due to defoliators

during the vegetative stage in rice field

with and without lowering plants. Munoz,

Nueva Ecija. 2016 Dry season.

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

9,0

10,0

With FP Without FP

Wh

ite

he

ad

(%

) TREATMENT

Damage (mean ±SE) due to stem borer one week

before harvest in rice field with and without

lowering plants. Munoz, Nueva Ecija. 2016 Dry

season.

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0

With FP Without FP

Wh

ite

he

ad

(%

)

TREATMENT

Damage (mean ±SE) due to stem borer one week

before harvest in rice fields with and without

lowering plants. Sto. Domingo, Nueva Ecija. 2016

Dry season.

0,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

8,0

9,0

10,0

With FP Without FPD

am

ag

ed

le

ave

s (%

)

TREATMENT

Damage (mean ±SE) due to defoliators during the

vegetative stage in rice fields with and without lowering

plants. Sto. Domingo, Nueva Ecija. 2016 Dry season.

0

5

10

15

20

25

30

35

40

With FP Without FP With FP Without FP

45 60

Pa

rasi

toid

(N

o/t

rap

)

Crop age (DT)

Anagrus Gonatocerus

Number of rice plant and leafhopper parasitoids

recorded in yellow sticky traps in fields with and

without flowering plants. Munoz, Nueva Ecija. 2016 Dry

season.

0

5

10

15

20

25

30

35

40

With FP Without FP With FP Without FP

45 60P

ara

sito

ids

(No

./tr

ap

)

Crop age (DT)

Anagrus Gonatocerus

Number of rice plant and leafhopper parasitoids

recorded in yellow sticky traps in fields with and

without flowering plants. Sto. Domingo, Nueva

Ecija. 2016 Dry season.

Results indicated that ecological engineering offers immense opportunities to rice insect pest management

using non-chemical methods leading to economic,

health and environmental benefits.

This practice increased biodiversity in the ecosystem,

significantly increased biological control of rice pests,

provided stability in the ecosystem, lower incidence of

damage caused by defoliators and rice stem borer in the rice fields and in effect with low vulnerability for pest

outbreaks.

Ecological engineering (EE) will compliment

Integrated Pest management (IPM) programs

currently implemented in tropical rice by

improving the efficacy of beneficial organisms

to reduce reliance on pesticides.

In addition, EE will address our concern on

production cost, health and safety of farmers

and consumers, the environment, and

ecological stability and sustainability.

Field Days at the Central Experiment

Station and PhilRice Branch Stations and

Lectures in 2015

Re-tooling of extension workers in several provinces through the

Agricultural Training Institute (ATI) and the Regional Crop Protection

Center (RCPC) of the Department of Agriculture (DA)

National Training and Assessment of Crop Health October 19-22,

2015 Delivered Lecture on Ecological Engineering Approach for Pest

management attended by participants from DA-RFO from Regions

1-13, Cordillera Autonomous Region (CAR), and Autonomous

Region of Muslim Mindanao (ARMM) – Diversion 21 Hotel, Iloilo City.

Lecture on Ecological Engineering Approach for Pest

management September 7, 2015 Pioneer seeds Company

Lectures delivered on Ecological Engineering

Approach for Pest Management (Wet season, 2015)

Updates on Rice Pest Surveillance Orchid Hotel, Manila

Attended by the Regional Crop Protection Center Staff (all regions)

of the Department of Agriculture. September 23-25, 2015-

Five day Specialized Training Course and Symposium of Regional,

Provincial, Municipal Crop Protection Officers/IPM Coordinators.

November 04, 2015 (Tarlac province)

November 11, 2015 (Bulacan province

November 18, 2015 (Nueva Ecija province)

November 25, 2015 (Pampanga and Zambales)

December 02, 2015(Bataan province)

RCPC III Auditorium, Maligaya, Munoz, Nueva Ecija

Farmer Field School (FFS) and Techno Demo Coordinators

Congress (November 26-27, 2015) Hotel Stotsenberg, Clarkfield,

Pampanga

Thank you