Diamondback Moth Credit: Biovision-Infonet 1. Geographical Distribution in Africa 2. General Information on Pest and Damage Damage Throughout the world diamondback moth is considered the main insect pest of brassica crops, particularly cabbages, kales, broccoli and cauliflowers. The economic impact of diamondback moth is difficult to assess since it occurs in diverse small scale and large-scale production […]
Author Archives: sukahumbu
Aphids
Credit:Biovision- Infonet Geographical Distribution in Africa 2. General Information on Pest and Damage Introduction Major species of aphids attacking crops in Africa: Banana aphid (Pentalonia nigronervosa) Black bean aphid (Aphis fabae) Cabbage aphid (Brevicoryne brassicae) False cabbage aphid (Lipaphis erysimi) Citrus aphid (Toxoptera citricidus, T. aurantii) Green peach aphid (Myzus persicae) Groundnut aphid (Aphis craccivora) Cotton aphid […]
Ch 2: Managing Whiteflies
Pest and Disease Management Credits: Infonet These illustration shows the methods promoted on infonet-biovision. The methods shown at the top have a long-term effect, while methods shown at the bottom have a short-term effect. In organic farming systems, methods with a long-term effect are the basis of crop production and should be used with preference. On the […]
Ch 1: Whiteflies
Whiteflies Credit:Biovision-Infonet Scientific Name: Aleurodicus disperses, Aleurothrixus floccosus, Aleyrodes proletella, Bemisia tabaci, Trialeurodes vaporariorumOrder / Family: Homoptera: AleyrodidaeType of Pest: Insect Host Plants: Beans, Cabbage/Kale, Brassicas, Cassava, Citrus plants, Cotton, Cucumber, Eggplant, Green gram, Mango, Okra, Papaya, Peppers, Pigeon pea, Pumpkin, Sesame, Sweet potato, Tomato, Watermelon 1. Geographical Distribution in Africa 2. General Information on Pest and Damage Damage Whiteflies cause direct damage to plants by sucking plant sap and removing plant nutrients, thereby […]
Cutworms
Credit: Biovision-Infonet Cutworms (Agrotis spp. and other species) 1. Geographical Distribution in Africa (red marked). Updated 10 July 2019. Source CABI Cutworms (Agrotis spp.) occur in Africa from the Cape to the Mediterranean Coast. Agrotis ipsilon is one of the most widely distributed species of the cutworm complex. It is generally considered to be worldwide in distribution. Distribution of Agrotis […]
Ch 7: Photos of good bugs and others
Check out your garden, if you see any of these, high five!!! These are the good guys!! They need the bad guys in order to survive so don’t pray toxic pesticides or you will kill both the good guys and the bad guys and the bad guys will come back faster!
Ch 6: Biological Control Methods
Biological control is the process of pest management by the use of living organisms that prey on or attack pests. Three important steps are generally required to improve the biological control of pests: Find out which natural enemies are present. Insect zoo To find out who is eating who or what, an “insect zoo” can be set up. […]
Ch 5: Importance of Identification
A key factor in protecting and conserving farmers’ friends is being able to tell friends from enemies. Various studies have shown that many farmers (and also many agricultural professionals) are not good at insect identification and know little about insect biology and behaviour. In vegetable pest management, if farmers cannot distinguish between pests and friends, […]
Ch 4: Feeding levels in agricultural systems
Credit:Infonet Natural systems support a wide range of plants and animals. The plants provide food for plant-eating animals such as antelopes and many insects. The plant-eating animals are themselves eaten by a wide range of predators. Plant-eating animals that feed on a crop that we value (for example aphids that feed on cabbage), are considered pests. […]
Ch 3: Types of natural enemies: Predators, parasitoids and pathogens
Types of natural enemies: Predators, parasitoids and pathogens Credit: Infonet/Dino Martins/Wam K Dennler Predators These are organisms that prey and feed on other organisms. They often feed on various stages of the host (pest): eggs, larvae, pupae and adult. Each predator kills and feed on a number of prey individuals during their development (larvae to adult). Most […]