Northern California walnuts: Environmental resistance a factor in the control of codling moth populations shown in tests at Linden
oleh: A Michelbacher, W Middlekauff, D Davis
| Format: | Article |
|---|---|
| Diterbitkan: | University of California Agriculture and Natural Resources 1950-07-01 |
Deskripsi
Control of the codling moth on susceptible varieties of walnuts usually requires spray applications each year.