Definition - What does Broad Spectrum Pesticide mean? A broad-spectrum pesticide is a powerful pesticide that targets entire groups or species of organisms that are commonly harmful to plants. Another name for a broad-spectrum pesticide is a non-selective pesticide. Unlike narrow-spectrum pesticides, broad-spectrum pesticides can target large amounts of crops at the same time, that might be plagued by more than one type of pest, and is therefore commonly used by farmers who need a fast-acting, guaranteed solution to an unknown problem.
Green belt definition: A green belt is an area of land with fields or parks around a town or city, where people... | Meaning, pronunciation, translations and examples English Dictionary | Thesaurus | Translator | Grammar | Scrabble | Blog
Definition of 'Van Allen Radiation Belts'. Definition: A radiation belt refers to a layer of charged and energetic particles which is held by the planet's magnetic field around the planet. The Van Allen belt specifically refers to the radiation belts around the Earth. Description: These belts were discovered by a group of US scientists in 1958 under the supervision of Dr James Van Allen. The Earth has two belts - one is Van Allen and the second appears to be temporary.