Table 1: Summary of studies on the evaluation of plant products for mosquito control in Zimbabwe from 1990 to 2022
Author [Reference] |
Objectives |
Study area |
Plant species used |
Plant part used |
Mosquito species tested |
Method |
Result |
Lukwa, et al. [25] |
To evaluate the effectiveness of Lippia javanica and Ocimum canum as larvicides |
Kamhororo, Gokwe South district, Midlands Province |
L. javanica and O. canum |
Leaves
|
An. gambiae s.s. larvae
|
WHO susceptibility tests |
Plant larvicides were effective against An. gambiae s.s. mosquito larvae |
Lukwa, et al. [26] |
To determine the major constituents of Lippia javanica leaf extracts and their repellency against laboratory-reared Aedes aegypti mosquitoes |
Musana Communal lands in Bindura district, Mashonaland Central Province |
L. javanica |
Leaves |
Ae. aegypti adult mosquitoes |
Arm-in-cage experiments |
Leaf extracts of L. javanica were effective at repelling Ae. aegypti mosquitoes |
Kazembe and Jere [22] |
To investigate the effectiveness/efficacy of ethanolic extracts of Colophospermum mopane, Dicoma. anomala and Lippia javanica and their mixtures in repelling Aedes aegypti mosquitoes |
Buhera district, Manicaland Province |
C. mopane, D. anomala and L. javanica |
Leaves |
A. aegypti adult mosquitoes |
Arm-in-cage experiments |
Higher repellencies were observed for extract mixtures than for individual plant extracts.
|
Kazembe and |
To evaluate the repellency and mosquitocidal effects of extracts from plants Blumea alata, Bidens pilosa and Chenopodium ambrosioides against Aedes aegypti mosquitoes |
Hurungwe District, Mashonaland West Province |
B. alata, B. pilosa and C. ambrosioides |
Leaves |
Ae. aegypti adult mosquitoes |
Arm-in-cage experiments |
Individual extracts from O. americanum and B. alata had short protection periods (2 hrs and below). The protection period increased when using a mixture of extracts. |
Kazembe, et al. [27] |
To evaluate the potential of the extracts of Ocimum americanum and Blumea alata as sources of mosquito repellents |
Mt Darwin district, Mashonaland Central Province, and Hurungwe district in Mashonaland West Province |
O. americanum and B. alata |
Leaves |
Ae. aegypti adult mosquitoes |
Arm-in-cage experiments |
Individual extracts from O. americanum and B. alata had short protection periods (2 hrs and below). The protection period increased when using a mixture of extracts. |
Lukwa, et al. [28] |
To investigate the knockdown and insecticidal effect of the plants Tagetes minuta, Lippia javanica, Lantana camara, Tagetes erecta, and Eucalyptus grandis against Anopheles arabiensis mosquitoes |
Mumurwi Village in Bindura district, Mashonaland Central Province |
T. minuta, L. javanica, L. camara, T. erecta and E. grandis |
Leaves |
An. arabiensis adults |
Burning (smoke) in field experiments |
Smoke from burning dried leaves of all these plants had varying knockdown and insecticidal effects against An. arabiensis mosquitoes. |
Kazembe and Makusha [29] |
To evaluate mosquito repellencies of Capsicum frutescens, Carica papaya and Cyanodon dactylon extracts and the effect of mixtures |
Chiredzi district, Masvingo Province |
C. frutescens, C. papaya and C. dactylon |
Leaves and fruits of C. frutescens, leaves and seeds of C. papaya, and the leaves of C. dactylon |
Ae. aegypti adult mosquitoes |
Arm-in-cage experiments |
Individual extracts from C. frutescens, C. papaya and C. dactylon had short protection periods (2.5 hrs and below). The protection period increased when using a mixture of extracts. |
Kazembe and Chauruka [30] |
To evaluate mosquito repellencies of the individual extracts and mixtures of Astrolochii hepii, Cymbopogon citratus, and Ocimum gratissimum |
South of Harare |
A. hepii, C. citratus and O. gratissimum |
Whole plant |
Ae. aegypti adult mosquitoes |
Arm-in-cage experiments |
Individual extracts from the plants had very short protection periods (1.5 hrs and below). The protection period increased when using a mixture of extracts. |