Transcript EFFECTS OF BOTANICAL PESTICIDES ON APHIDS (Aphis fabae)

PROPOSAL PRESENTATION
SUBJECT: EFFECTS OF BOTANICAL PESTICIDES
ON APHIDS (Aphis fabae) AND THRIPS (Thrips
tabaci) PESTS OF FRENCH BEANS (Phaseolus
vulgaris).
SUPERVISOR: Dr. DORAH KILALO.
SEIF MATI IDRIS
A22/0071/2009.
©2013
BACKGROUND INFORMATION





The common bean (Phaseolus vulgaris) forms
important food and cash crop in Africa.
They are considered the second most important
source of human dietary protein after maize and third
as source of calories (after maize and cassava) in
Africa.
Most beans are produced by small-scale farmers for
home consumption.
However, high quality dry and snap beans are
exported to markets in European Union EU countries.
Most common varieties are, samantha, julia, amy, etc.
PROBLEM STATEMENT



Due to disease and pest instances which causes: poor crop development.
 low yields.
The main method used for control is through use of
chemicals.
Other problems occur such as:
 pesticide resistance.

residual effects on products.
JUSTIFICATION



Certain plants contain chemicals which repel and
affect pests presence.
Used in making of botanical pesticides.
Its use is recommended because of: Availability.
 Adaptability.
 No residual effect.
 Cheap.
OBJECTIVES

The main objective entail:To develop a sustainable management method
for controlling aphids (Aphis fabae) and thrips (Thrips
tabaci) through use of botanical pesticides.

Specific objective is:To determine the effects of botanical pesticides
(Tagetes tephrosia, tithonia, spider plant and
nimbecidine) on aphids (Aphis fabae) and (Thrips
tabaci) infesting French beans.
MATERIALS AND METHODS
Materials to be used are:
 jembe
 Panga
 Tape measure
 fertilizer
 rope and pegs
 Seeds
 Fertilizer
 knapsack sprayer
Botanicals pesticides
which are extracted
from: spider plant
 tithonia
 neem plant
 Tagetes tephrosia.
`
CONTI...



This is to be carried out at Kabete Field Station.
All agronomic practices recommended are to be
carried out.
Establishment of crops is to cater for seven
treatment plots at a Randomized Complete
Block Design RCBD with three replicates.
EXPERIMENTAL LAYOUT AND DESIGN
Blocks (B)
Treatments (T)
B1
T7
T5
T3
T1
T6
T2
T4
B2
T6
T2
T7
T4
T3
T5
T1
B3
T2
T1
T4
T5
T6
T3
T7
Key:•T1 – positive control
•T2 – negative control
•T3 – spider plant extract
•T4 – nimbecidine
•T5 – Tagetes tephrosia,
•T6 – Tithonia
•T7 – synthetic chemical (Katrin)
DATA COLLECTION



Physical identification of the pests both the adults and
immature stages.
Counting to be carried out and the results put in
record.
For the aphids it entails:
observation to commence after crop
establishment in the field.
 counting on three meristematic leaves per
plant from five plants per plot.
CONTI....


For the thrips it entails: observation to commence during flowering
period.
 counting on three flowers per plant from five
plants per plot.
Parameters such as date and time of collection to be
recorded at all times.
DATA ANALYSIS



The data will be subjected to the analysis of variance.
Using the Separate Fisders Protected LSD at 95% c.i.
This is to evaluate the effect of the botanicals
pesticide on the pests.
WORK PLAN
2012
Activity
Nov
2013
Dec
Proposal
writing and
presentation

Exp. Set up

Data
collection
Jan

Feb
Mar






Report
submission


Data
analysis
Report
writing
Apr



May
BUDGET
ITEMS
QUALITY
UNIT
COST (Ksh)
French beans
2
Kg
2 000
Fertilizer DAP
5
kg
400
Katrin (insecticide)
100
ml
450
Nimbecidine
100
ml
650
Spider plant extract
4
kg
760
Tagetes
4
kg
700
Tithoni
5
kg
800
Labour
12
days
TOTAL
4 800
10 560
ASANTENI.