Archer, T.L. and Onken, A.B. and Matheson, R.L. and Bynum, Jr, E.D. (1982) Nitrogen fertilizer influence on greenbug (Homoptera: Aphididae) dynamics and damage to sorghum. Journal of Economic Entomology, 75 (4). pp. 695-698.
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Abstract
Field experiments carried out in Texas between 1974 and 1980 showed that densities of Schizaphis graminum (Rond.) on sorghum increased in direct relation to the rate of application of nitrogen fertilizer (0, 45, 90, 135, 180 and 225 kg/ha) and to increase in plant dry matter. Damage ratings related to the density of the pest indicated that nitrogen fertilizer did not alter natural tolerance of sorghum to attack. The dynamics of S. graminum responded positively to ammonium nitrogen content in leaves. These results indicated that increasing nitrogen fertilizer enhanced the suitability of sorghum as a food-plant for S. graminum. However, the rate of aphid increase diminished at higher nitrogen concentrations
| Item Type: | Article |
|---|---|
| Author Affiliation: | Texas A & M University Agricultural Research and Extension Center, Lubbock, TX 79401, USA |
| Subjects: | Plant Protection |
| Divisions: | Sorghum |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 23 Apr 2012 13:54 |
| Last Modified: | 23 Apr 2012 13:54 |
| Official URL: | http://www.ingentaconnect.com/content/esa/jee/1982... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4904 |
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