Effects of a Nitrogen-Deficient Host and Crowding on the Corn Leaf Aphid1

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.


Corn leaf aphids, Rhopalosiphum maidis (Fitch), were allowed to feed on sorghum plants grown under high and low levels of nitrogen. Results showed that more than. twice as many aphids were found on plants receiving nitrogen than on nitrogen-deficient plants. Other tests indicated that the reduction in aphid fecundity was due to a crowding response rather than to nitrogen deficiency. Aphid densities (number of aphids per gram of green plant weight) were more than double on nitrogen-deficient plants than on plants receiving nitrogen.

The percentage of alate aphids on nitrogen-deficient plants was twice that on plants that were not deficient. The higher percentage of alate aphids appeared to be due to nitrogen deficiency and not to overcrowding.

Document Type: Research Article

Publication date: April 1, 1966

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more