R.W. Samson's Images
Organization: Purdue UniversityCountry: United States
Web: http://www.ppdl.purdue.edu/PPDL/
| 46 Images of 21 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 5402920 | 2,4-D | Herbicide- 2,4D, Fruit distortion | |
| 5402939 | Fusarium wilt | Fusarium oxysporum f.sp. lycopersici | |
| 5402949 | Common bacterial blight of beans, fuscous blight | Xanthomonas axonopodis pv. phaseoli | Common bacterial blight symptoms on bean |
| 5402965 | fungicides | Tomato fungicide trials 6-9(right) t t./a. zero manzte 6-10(left) 29 t./a. 6 lbs. maneb/a. | |
| 5402969 | phlox powdery mildew | Erysiphe cichoracearum | |
| 5402970 | black rot of crucifers | Xanthomonas campestris pv. campestris | |
| 5402981 | angular leaf spot of cucumber | Pseudomonas syringae pv. lachrymans | |
| 5402924 | 2,4-D | Herbicide- 2, 4-D | |
| 5402921 | bacterial spot | Xanthomonas vesicatoria | |
| 5402940 | late blight | Phytophthora infestans | Fungicide trial on potatoes with late blight. Dithane D-14 plus zinc sulfate applied at 3.2 qts./a. every 7 days from July 12 to September 6, 1954. |
| 5402948 | dodder | Cuscuta spp. | |
| 5402933 | Fusarium wilt | Fusarium oxysporum f.sp. lycopersici | Left: Sioux variety, completeley susceptible Right: PBP 14, immune to Fusarium wilt |
| 5402937 | late blight | Phytophthora infestans | |
| 5402938 | late blight | Phytophthora infestans | 1950 |
| 5402934 | black rot of crucifers | Xanthomonas campestris pv. campestris | |
| 5402922 | bacterial spot | Xanthomonas vesicatoria | |
| 5402929 | anthracnose | Colletotrichum coccodes | fruit lesions |
| 5402928 | late blight | Phytophthora infestans | |
| 5402925 | late blight | Phytophthora infestans | on leaflets |
| 5402926 | late blight | Phytophthora infestans | leaf lesions |
| 5402927 | late blight | Phytophthora infestans | |
| 5402980 | angular leaf spot of cucumber | Pseudomonas syringae pv. lachrymans | |
| 5402975 | common scab of potato | Streptomyces scabiei | Katahdin variety |
| 5402976 | smooth patch of oak | Aleurodiscus oakesii | |
| 5402952 | Alternaria leaf blight | Alternaria cucumerina | Control of Alternaria cucumerinum with maneb or zineb. |
| 5402941 | fungicides | Experimental plot sprayer. Old Iron Age outfit on Farmall A tractor.Boyce Foerman, operator. | |
| 5402954 | fungicides | Custom-constructed spray boom on onion sprayer. | |
| 5402953 | fungicides | Custom-constructed spray boom on onion sprayer. | |
| 5402945 | tomato | Lycopersicon esculentum | Defoliation control. Comparison of sprayed and unsprayed plots. |
| 5402956 | Southern bacterial wilt | Ralstonia solanacearum (except Race 3 Biovar 2) | |
| 5402987 | apple scab | Venturia inaequalis | |
| 5402985 | apple scab | Venturia inaequalis | |
| 5402986 | apple scab | Venturia inaequalis | |
| 5402966 | bacterial canker and wilt of tomato | Clavibacter michiganensis ssp. michiganensis | Marginal browning and rolling of leaves |
| 5402963 | apple scab | Venturia inaequalis | |
| 5402964 | apple scab | Venturia inaequalis | |
| 5402957 | Alternaria black molds / stem cankers | Alternaria spp. | |
| 5402919 | Alternaria leaf blight | Alternaria cucumerina | Also Muskmelon cracking |
| 5402984 | brown spot | Alternaria alternata | |
| 5402983 | brown spot | Alternaria alternata | On Queen of Colorado variety |
| 5402982 | brown spot | Alternaria alternata | On Queen of Colorado variety. |
| 5402979 | brown spot | Alternaria alternata | |
| 5402968 | anthracnose | Colletotrichum orbiculare | |
| 5402967 | anthracnose | Colletotrichum orbiculare | variety Sugar Baby |
| 5402958 | Alternaria black molds / stem cankers | Alternaria spp. | |
| 5402955 | angular leaf spot of cucumber | Pseudomonas syringae pv. lachrymans |
