POSITIVE PRODUCTS FOR CONTROL OF INSECT PESTS ,
DISEASES AND WEEDS IN RICE
(Dr RK Wanjogu and CM Kambo)
Presentation during the NIB / Collaborators research
findings Workshop, Kenya School of Monetary Studies,
3rd to 4th July, 2014.
Introduction
Rice (Oryzae sativa) is the third most important food crop in
Kenya after maize and wheat
National rice consumption is estimated at 400,000 metric
tonnes
Annual production range of 45,000 to 80,000 metric tonnes
Low production is caused mainly by poor natural resource
management
And continuous monoculture leading to accumulation of,
weeds, diseases and insect pests
PADDY FIELD
Objectives
To evaluate the efficacy of 6 selected
Insecticides against rice pests
To evaluate the efficacy of 4 selected
Fungicides against weeds paddy fields
To evaluate the efficacy of 5 selected
Herbicides against weeds paddy fields
Justification
Target pests: Insect pests, diseases and
weeds
If uncontrolled, may cause upto 100% yield
losses
Evaluation of pest control products should be
a continuous processes
For
effective
pesticide
resistance
management
insecticide
screening
is
necessary
Materials and methods
Field experiments : Conducted at MIAD
Research Centre between 2012 and 2014
Rice variety, Basmati 370 was planted at a
spacing of 15 cm x20 cm
Plot size – 5m by 1 m : In RCBD with 4
replicates
Treatments: 5 including, Local check &
untreated control
Example: East trap 4G
Chemical name
Active Ingredient (a.i.)
Rate
of
Application per
Ha
East trap 4G
Cartap Hydrochloride
10 kg
East trap 4G
Cartap Hydrochloride
15 kg
East trap 4G
Cartap Hydrochloride
20 kg
Cyclone 505 EC
Cypermethrin +Chlorpyrifos
1L
Untreated control
Nil
Nil
Efficacy of East trap 4G against Rice pests
Treatment
Rate per ha
Root borer
Shoot borer
Leaf folder
Gall midge
0 kg
1.79a (2.70)
0.84a (0.21)
0.97a (0.44)
0.79a (0.12)
East trap 4G
10 kg
1.73ab (2.49) 0.82ab (0.17) 0.96ab (0.42) 0.77ab (0.09)
East trap 4G
15 kg
1.76ab (2.60) 0.75ab (0.06) 0.96ab (0.42) 0.76ab (0.08)
East trap 4G
20 kg
1.74ab (2.53)
0.71b (0.00)
0.96ab (0.42)
0.75b (0.06)
Cyclone 505 EC
1L
1.66b (2.26)
0.81ab (0.16
0.93b (0.36)
0.79a (0.12)
LSD (p=0.05)
-
0.13
0.13
0.04
0.04
p-value (0.05)
-
0.325
0.159
0.173
0.164
CV (%)
-
6.05
8.12
9.76
11.65
Untreated
control
Recommendation
East trap 4G at the rate of 15 kg to 20 kg per hectare
effectively controlled the shoot borers, root borers, leaf
folders and gall midges in rice fields.
In addition, significantly more tillers were recorded in plots
treated with East trap 4G at 20 kg ha-1 and Cyclone 505 EC
1.0 L ha-1 (Local check) as compared to the untreated control
plots
East trap 4G at 20 kg ha-1 recorded significantly taller plants
as compared to the local check and untreated control plots
Two season results: East trap4G at 15-20 kg ha-1 may be
recommended for the control of shoot borers, root borers,
leaf folders and gall midges in rice fields.
RICE STEM BORER
Cyperus difformis-weed
Monocharia vaginalis-weed
REPORTS SUBMITTED TO PCPB
PRODUCT
CLASS
COMPANY
SEASONS
Engeo 247 SC
Insecticide
Syngenta
1
East trap 4G
Insecticide
East African Business Co. Ltd.
2
Ochestra 50 EC
Insecticide
Dipchem EA Ltd.
1
Steward 0.3% GR
Insecticide
Agromine 860 SL
Herbicide
Flair 50 EC
Herbicide
Witness 52.5% WP
Amistar Top
Sacrifido 125 EC
Greenlife Crop protection Africa
Ltd.
Greenlife Crop protection Africa
Ltd.
East African Business Co. Ltd.
2
2
2
Dipchem EA Ltd.
Fungicide
Fungicide
1
Dipchem EA Ltd.
1
Fungicide
Dipchem EA Ltd.
1
EFFICACY TRIAL IN PROGRESS
PRODUCT
Spectator Gold 50%
EC
Epitome elite 500 SP
CLASS
Insecticide
Insecticide
COMPANY
Greenlife Crop
Protection Limited
East African Business
Greenlife Crop protection
SEASONS
1
1
Exempo curve 250 SC
Fungicide
Defacto 500 EC
Fungicide
Dipchem
1
Breakdown 450 EC
Herbicide
Greenlife
1
Africa LTD
1
Acknowledgement
 Director, KARI
 Managing Director-NIB
 NIB – MIAD staff
 Centre Director, KARI Mwea
BUTTERLIES