Walnut aphid control: Aphicide in May codling moth spray effective in northern California
oleh: W Middlekauff, A Michelbacher
| Format: | Article |
|---|---|
| Diterbitkan: | University of California Agriculture and Natural Resources 1950-05-01 |
Deskripsi
Natural enemies of the walnut aphid-one of the most destructive insects attacking walnuts in northern California—serve to keep the aphid population in check.