The commercial oil Bioneem[c] is effective in controlling citrus blackfly
, Aleurocanthys woglumi Ashby (Homoptera, Aleyrodidae).
It was observed in the sampling dates that the values vary from 0.08 to 0.78 in the MPS (Table 1) and from 0.43 to 0.75 in the APS (Table 2), indicating a maximum variation of 78% in the blackfly
survey, considering both systems.
A variety of factors (water temperature, velocity, streambed, dissolved oxygen concentration and vegetation) acting in concert have been found to influence the blackfly
richness in the streams of central Amazonia (8).
In 1992, mosquito and blackfly
abundance did not vary with time of the day (Table 1) or among sites (Table 2).
The joy of hitting the natural balance is that although you may see a couple of blackfly
or greenfly colonies on your nasturtiums, you can also watch hoverfly larvae devour the greenfly on your roses, or delight in your kids counting the spots on the ladybirds and see the light catching the delicate green wings of the lacewings.
In Brazil, the citrus blackfly
was first detected in the Northern region, specifically in the state of Para (greater metropolitan area of Belem and neighboring municipalities) in 2001 (OLIVEIRA et al., 2001).
Insecticides based on natural materials include pyrethrum (Py Garden Insect Killer, Doff All In One Bug Spray, Gem Stop Bugs, Westland Bug Killer, Nature's Answer Natural Pest Control), rotenone (Bio Liquid Derris Plus), fatty acids (Bayer Organic Pest Control, Doff Greenfly and Blackfly
Killer, Fito Get Off Insect), plant and fish oils (Vitax Organic 2 in 1 Pest and Disease Control), plant extracts (Growing Success Fruit & Veg Bug Killer, Growing Success Shrub and Flower Bug Killer) and mineral lattice (SB Plant Invigorator).
You will find greenfly and blackfly
- small, wingless insects - on the tips of shoots and buds and the undersides of leaves, both outdoors and in the greenhouse.
Tens of thousands of Americans are seeing Juke--Bar, Get A Job and Blackfly
on their television sets, a situation that happens all too infrequently here.
Do the same with blackfly
on broad beans and aphids if you find them anywhere.
A ADRIENNE SAYS: They are aphid eggs (greenfly or blackfly
), which will hatch in spring and feed on the plant sap.