Sentences with phrase «against aphids»

Researchers at Umeå University and Wageningen University have discovered how plants can defend themselves against aphids.

Parasitic wasps protect the plants against aphid infestations, Johnson explained as he described wasp - aphid interaction on cup plants.

Not exact matches

Oh what a poor pumpkin, I live in an apartment without a garden so I just have my herbs but I understand what it's like to raise a war against insect infestations (my thai basil is currently recovering from an aphid invasion!).

While U-type offered no protection against the larvae, the wasp larvae were more likely to shrivel and die in aphids infected with T - type or R - type.

Last week here at the Ecological Society of America meeting, ecologists described how a little - studied type of bacteria protects pea aphids against parasitic wasps.

The study is the first to show conclusively that a bacterial symbiont can protect aphids against parasites, says Richard Stouthamer, an ecologist at the University of California, Riverside.

They were first manufactured in the 1970s to protect crops from aphids, and act against insects» nervous systems.

At each site Meyerson and Cronin measured plant biomass and defenses against herbivores and quantified insect damage by galling, chewing and sucking (aphids) insects to measure the effects of herbivory on Phragmites fitness.

The harlequin ladybird (Harmonia axyridis) was introduced to some countries as a biological control agent against agricultural pests such as aphids.

In a field study, Losey found that the ladybugs eat more red aphids because these stand out against the green pea plant.

Some also include natural soaps, which can be especially effective against soft - bodied insects such as aphids.