SUBJECT: EFFECTS OF BOTANICAL PESTICIDES ON APHIDS (Aphis fabae) AND THRIPS (Thrips tabaci) PESTS OF...
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Transcript of SUBJECT: EFFECTS OF BOTANICAL PESTICIDES ON APHIDS (Aphis fabae) AND THRIPS (Thrips tabaci) PESTS OF...
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 IDRISA22/0071/2009.
©2013
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.
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.
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.
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)
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.
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.
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.
2012 2013
Activity Nov Dec Jan Feb Mar Apr May
Proposal writing and presentation
Exp. Set up
Data collection
Data analysis
Report writing
Report submission
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 4 800
TOTAL 10 560
ASANTENI.