Checking wheat for pests. A man sifting stored grain to detect adult weevils. This method has been used for centuries to test stored grain for signs of infestation. Weevils are beetles that lay their eggs inside grains,which the larvae use as a food supply. Sifting can only detect adult weevils,not the destructive larvae | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Goetgheluck, Pascal |
Bildgröße: | 4064 px × 2704 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |