Resistance of Moapa Alfalfa to the Spotted Alfalfa Aphid in Commercial-Size Fields in South-Central Arizona
- 1 February 1963
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 56 (1) , 84-85
- https://doi.org/10.1093/jee/56.1.84
Abstract
In counts over a 3-year period, 1959-61, in 15-to 80-acre fields in warm, low-elevation areas of south-central Arizona, average populations of the spotted alfalfa aphid (Therioaphis maculata (Buckton)) were 5 to 13 times higher on susceptible alfalfa varieties Chilean 21-5 and African, than on Moapa alfalfa, a recently developed resistant variety. Foliage damage by the aphid was 15 to 22 times greater on the susceptible varieties than on Moapa. The resistance of Moapa to the aphid was evident in each of the 3 years and in all seasons of the year.This publication has 1 reference indexed in Scilit:
- Sampling Technique Studies on the Spotted Alfalfa Aphid1Journal of Economic Entomology, 1957