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Glite Dictionary
halo spot

halo spot

9.4
A disease of bean leaves that makes pale spots with light rings
  • noun
  • /ˈheɪloʊ spɑt/
  • Specialized
translation icon : mancha de halo
  • You can identify halo spot by the distinctive pale circles on affected leaves.

Examples

  • Many farmers lose yield to halo spot when humidity and warm temperatures persist.

  • The agricultural extension office has published a guide on managing halo spot in crops.

  • Look at that halo spot!

  • The halo spot is visible.

  • Farmers can prevent halo spot by improving air circulation around their bean plants.

  • The first sign of halo spot is the appearance of pale spots surrounded by light halos on leaves.

  • Proper treatment can help control halo spot and protect bean crops from severe damage.

Synonyms

halo blight
vshalo spot
  • Specialized
8.1

A plant disease caused by bacteria that makes spots with yellow rings on leaves

is specific to bean plants and refers to pale spots with light halos

Surface Forms

halo spot singular
halo spots plural

Morphology

halo + spot

The meaning — a spot surrounded by a halo — is directly and compositionally derived from 'halo' (a ring-like area) + 'spot' (a small mark). Although used as a technical plant-disease term, the visual relation is literal and predictable, so a B1 learner who knows both constituents would readily infer it refers to a spot with a pale halo on a leaf.

Etymology

Halo spot gets its name from how infected leaves look: a pale spot with a lighter ring like a halo. So Halo spot names the 'disease' of bean plants that makes those ringed spots.