| 5485254 |
downy mildew |
Bremia lactucae |
Sporangiophore and sporangia |
| 5485247 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Conidia. |
| 5458673 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria leaf spot. |
| 5458674 |
Alternaria black molds / stem cankers |
Alternaria spp. |
Alternaria leaf spot. |
| 1572457 |
rabbit |
|
Vertebrate pest management. Alfalfa flakes placed at the edge of a lettuce field keep rabbits from entering the lettuce field and eating seedlings. October 1996 |
| 1572399 |
allelopathy |
|
Planting lettuce following various durations of sudangrass decomposition time. October 1996 |
| 1571677 |
riverhemp |
Sesbania spp. |
Field of organic mixed lettuce during stand establishment. Field was previously cropped to sesbania, whose crop residue was speculated to have a negative impact on lettuce. November 1995 |
