Regional variation in the number of pea aphids caught in the suction traps of the Rothamsted Insect Survey (RIS) was associated with the proportion of each region under pea crops. The degree of infestation of crops was similar in areas of high and low pea production as the mean annual abundance of aphids per hectare of crop remained constant. Yearly variation in abundance was loosely associated with temperature from January to July. Cold weather in January and February resulted in large numbers of aphids. Warm weather in February led to early colonization, and emigration from, pea crops as well as making early sowing of the crop more likely. A forecast of the time of first appearance of Acyrthosiphon pisum 1 in the aerial plankton can be ma...
The aphids Sitobion avenae F., Metopolophium dirhodum Wlk. and Rhopalosiphum nadi L. are important p...
<div><p>Background</p><p>The species diversity of aphids and seasonal timing of their flight activit...
Aphids represent a significant challenge to food production. The Rothamsted Insect Survey (RIS) runs...
Once a minor pest, the pea aphid, Acyrthosiphon pisum (Harris) has recently become a major pest of f...
Two important lady beetle species commonly found in alfalfa fields in Iran are the variegated lady b...
International audienceThe evolutionary maintenance of sex, despite competition from asexual reproduc...
Cereal aphids are a major pest of crops. There are seven important pest species found in Britain- Si...
Fraser oats were used to study populations of cereal aphids in 1972,1973 and 1974. The most commonly...
Although phytophagous insects can vary genetically in host use and exhibit long-range movements, the...
The ability to resist or avoid natural enemy attack is a critically important insect life history tr...
1 Aphid populations may show strong year-to-year fluctuations, but questions remain regarding the do...
Aphid populations show periodic fluctuations and many causes are attributed to their dynamic. We inv...
Trabajo presentado en la International Conference Advances in grain legume breeding, cultivations an...
Spring-sown dry pea, Pisum sativum, is an important rotational crop grown with wheat in the Palouse ...
To insure a large number of Pea Aphids (PA) Acyrthosiphon pisum (Harris) in the field, cages and met...
The aphids Sitobion avenae F., Metopolophium dirhodum Wlk. and Rhopalosiphum nadi L. are important p...
<div><p>Background</p><p>The species diversity of aphids and seasonal timing of their flight activit...
Aphids represent a significant challenge to food production. The Rothamsted Insect Survey (RIS) runs...
Once a minor pest, the pea aphid, Acyrthosiphon pisum (Harris) has recently become a major pest of f...
Two important lady beetle species commonly found in alfalfa fields in Iran are the variegated lady b...
International audienceThe evolutionary maintenance of sex, despite competition from asexual reproduc...
Cereal aphids are a major pest of crops. There are seven important pest species found in Britain- Si...
Fraser oats were used to study populations of cereal aphids in 1972,1973 and 1974. The most commonly...
Although phytophagous insects can vary genetically in host use and exhibit long-range movements, the...
The ability to resist or avoid natural enemy attack is a critically important insect life history tr...
1 Aphid populations may show strong year-to-year fluctuations, but questions remain regarding the do...
Aphid populations show periodic fluctuations and many causes are attributed to their dynamic. We inv...
Trabajo presentado en la International Conference Advances in grain legume breeding, cultivations an...
Spring-sown dry pea, Pisum sativum, is an important rotational crop grown with wheat in the Palouse ...
To insure a large number of Pea Aphids (PA) Acyrthosiphon pisum (Harris) in the field, cages and met...
The aphids Sitobion avenae F., Metopolophium dirhodum Wlk. and Rhopalosiphum nadi L. are important p...
<div><p>Background</p><p>The species diversity of aphids and seasonal timing of their flight activit...
Aphids represent a significant challenge to food production. The Rothamsted Insect Survey (RIS) runs...