Payne walnuts: Codling moth investigations in northern California and recommendations for 1949
oleh: A Michelbacher, W Middlekauff, D Davis
| Format: | Article |
|---|---|
| Diterbitkan: | University of California Agriculture and Natural Resources 1949-03-01 |
Deskripsi
Throughout Northern California the codling moth infestation in 1948 was much more serious than that encountered in any recent year. The cause of this is not known although it may have been associated in part with the lateness of the season.