Benghal bean

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Definition

Noun: 1. A tropical leguminous vine: "Benghal bean" refers to a specific annual, woody climbing plant (Mucuna pruriens var. utilis) native to Asia. It is characterized by long clusters of purplish flowers and pods covered in dense hairs. It is cultivated in some regions, such as the southern United States, primarily for use as green manure to enrich soil and as forage for grazing animals.

Usage Examples
  • Noun:
    • Farmers planted benghal bean to improve the nitrogen content of the field.
    • The long, hairy pods of the benghal bean are a distinctive feature.
    • This cover crop is benghal bean, which is later plowed under as green manure.
Advanced Usage
  • As a botanical subject: The term is used in agricultural and botanical contexts to specify this particular cultivar of the genus, valued for soil improvement rather than for its edible beans (which require special preparation to be safe for human consumption).
    • The study compared the biomass yield of benghal bean to that of cowpea.
Variants and Related Words
  • Velvet bean: A common name for plants in the species complex, which includes the benghal bean. It broadly refers to similar hairy-podded vines.
  • Mucuna (n): The genus name for this group of tropical leguminous vines.
  • Green manure (n): A crop, such as benghal bean, that is grown and then plowed into the soil to improve its quality.
Synonyms
  • Bengal bean: An alternate spelling.
  • Cowitch (less common): A name that sometimes refers to related itchy-podded varieties.
  • Cover crop: A general term for a crop grown to manage soil erosion, fertility, and quality; benghal bean is a type of cover crop.
Related Phrases/Idioms

(This specific botanical term is not commonly used in idiomatic expressions.)

Noun
  1. the annual woody vine of Asia having long clusters of purplish flowers and densely hairy pods; cultivated in southern United States for green manure and grazing

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