- been looseleaf, romaine,
crisphead, and butterhead, with the
others being intermediary or more exotic. The
butterhead and
crisphead types are
sometimes known...
- Look up lettuce,
crisphead, or
Lactuca sativa in Wiktionary, the free dictionary.
Lettuce is a
leafy vegetable. The name is also
applied to
other related...
- has a wide host range. All
types of
lettuce are susceptible,
including Crisphead, Romaine, Butterhead, and leaf lettuces. And in nature, the
virus infects...
-
varieties are
mostly moderately to
highly resistant to the
aphid whereas crisphead varieties are susceptible. If
numbers of
aphids are
sufficiently high...
-
lettuce grown are the
Butterhead (Lactuca
sativa var. capitata), the
Crisphead (Lactuca
sativa var. capitata), the
Looseleaf (Lactuca
sativa var. crispa)...
