| 851 |
Incidence of the greenbug, Schizaphis graminum (Rondani) (Homoptera: Aphididae) on wheat in Upper Egypt |
1990 |
| 852 |
Influence of potato varieties, nitrogen fertilization and plant growth regulators on the infestation level of Myzus persicae in potato fields |
1990 |
| 853 |
Influence of potato varieties, nitrogen fertilization and plant growth regulators on the infestation level of Myzus persicae in potato fields |
1990 |
| 854 |
Myzus persicae (Sulzer) and its natural enemies in potato fields |
1990 |
| 855 |
Myzus persicae (Sulzer) and its natural enemies in potato fields |
1990 |
| 856 |
Myzus persicae (Sulzer) and its natural enemies in potato fields |
1990 |
| 857 |
Relative potency of some compounds against the Egyptian alfalfa weevil, Hypera brunneipennis Boheman, Coleoptera, Cruculionidae |
1990 |
| 858 |
Relative potency of some compounds against the Egyptian alfalfa weevil, Hypera brunneipennis Boheman, Coleoptera, Cruculionidae |
1990 |
| 859 |
Relative potency of some compounds against the Egyptian alfalfa weevil, Hypera brunneipennis Boheman, Coleoptera, Cruculionidae |
1990 |
| 860 |
Susceptibility of the cotton leafworm to mixtures of commercial Bacillus thuringiensis with chemical herbicides. |
1990 |