Infected plants have small, yellowish spots on the outer leaves.
13+ Brown Spots On Lettuce Leaves. Brown spots (generally with some yellow/whitening surrounding them) on a golden pothos can be caused by a few things. Lettuce, lactuca sativa, is a leafy herbaceous annual or biennial plant in the family asteraceae grown for its leaves which are used as a salad green.
H2o2 Generation Indicated By Dark Brown Spots In Lettuce Leaves As A Download Scientific Diagram from www.researchgate.net
These spots grow and become large, irregular and brown. Your plant most likely has leaf spot of schefflera caused by colletotrichum. Brown leaves aren't usually harmful to eat, but they sure can make a salad look unappetizing.
A lot of shoppers are puzzled when a physiological disorder that may develop during postharvest transport and storage, russet spotting is particularly common in iceberg lettuce.
Vitians was first described in the united states by nellie brown in 1918 from diseased lettuce in south carolina and virginia. Over the last few days about 25% of the leaves are showing the brown spots. However, it is sometimes caused by bacteria and other times caused by insects mimicking a leaf spot disease. It thrives in cooler temperatures.
