Problems with chemical control of pear psylla
oleh: H Riedl, P Westigard, R Bethell, J DeTar
| Format: | Article |
|---|---|
| Diterbitkan: | University of California Agriculture and Natural Resources 1981-09-01 |
Deskripsi
The relatively new pyrethroid insecticides are effective against pear psylla, but intensive use can hasten resistance development.