The Pamphlet Collection of Sir Robert Stout: Volume 14
The Pea Aphis. Aphis Pisi. Siphonophora Pisi. Buckton
The Pea Aphis. Aphis Pisi. Siphonophora Pisi. Buckton.
This is commonly called the "green dolphin," and frequently sadly injures pea plants. Like the black dolphin it is fostered upon common plants and weeds, as the Shepherd's purse, Capsella bursa pastoris, the common Nettle, and others. Its life history is the same as that of the bean aphis, and the sole means of prevention is the eradication of weeds from cultivated land and its neighbourhood as much as possible. Unfortunately there appear to be no remedies against this insect, or, at least, where peas are produced upon a large scale. In market gardens and ordinary gardens washing the affected plants with decoctions of quassia and soft soap, as recommended in the case of the bean aphis, might advantageously be adopted.