ECOLOGICAL PEST MANAGEMENT
NATURAL PESTICIDES
PLANT EXTRACTS
AFRICA MARIGOLD(tagetes exrecta)Mexican marigold)tagetes minuta
Used against :bacteria, fungi, nematodes, insect
Insects :beetles and many others
2.BLACK JACK (vixens pilosa)
Used against :insects, mites
:repels aphids, ants, beetles, cabbage root fly ,caterpillar, crickets, mites, termites and white flies
3.CASTOR OIL PLANT(Ricinus Communis)
Use against :rats, mice, termites (mounds),fungal diseases, rodents, pest, cutworms
4.Chilli/hot pepper and sweet peppers(Capsicum frutescens)
Used against ;slug, snails, soil pests, viral diseases, termites, ants, cutworms and other insects
5.Garlic (gallium CEOs)
Used against ;bacterial and fungal diseases
insects ;mites, mice, mole, aphids, ants, army worm, caterpillars,moths, grub, mosquitoes, termites
6.Papaya(caricature papaya )
Used against :fungal diseases e.g coffe rust, powdery mildew and rice brown leaf spot, nematodes and quite a few kinds insects
7.Pyrethrum(chrysanthemum cinerarifolium)
Used against ;all kinds of insects
8.Stinging nettle /wild nettle
used against ;fungal diseases
9.Tomato (lycopersicon esculentum)
Used against ;bacterial and fungal diseases
insects ;mites, nematodes, aphids, ants, asparagus bettle,cabbages worm, diamond back moth, cockroaches, whiteflies
10.Sodom apple fruit
Used against :aphids, caterpillar, mite and others
11.Datura stramonium
Used against ;most garden pest
12.Neem tree(azadirachta indica )
Leaves, fruits and roots have insecticidal repellent, antifeedant and pest-growth inhibiting qualities
Used against fungi and nematodes
13.Tobacco
When the above remedies do not prove effective, tobacco can be used, but it's not recommended for frequent use because pests can possibly became immune to it
it also kills beneficial
This what I was taught and I heard to share out to other people if your are intreasted to know any how of this is prepared feel free to ask al let you know

N/B
Can also mix the plant extra (most of them)to make astrong natural pesticides for most of the plant pest and diseases .