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organism that produces disease
pathogens
a weed that completes its life cycle within 1 year.
annual weed
a chemical substance that is composed of more than one elemen
compound
a compound that does not contain carbon.
inorganic compounds
a warning illustration such as a skull and crossbones located on a chemical container that warns of chemical toxicity to humans and animals
symbols
plant tissue responsible for plant growth.
meristematic tissue
horizontal, underground stems.
Rhizome
a fungicide applied before disease infection
protectant fungicide
a chemical substance that is composed of more than one element.
compound
a stem that grows above ground
stolon
portion of the stem that is swollen or slightly enlarged that gives rise to buds
node
members of a major group of lower plant life that lack chlorophyll and obtain nourishment from either live or decaying organic matter
fungi
a herbicide that is absorbed by the roots of a plant and translocated throughout the plant.
systemic herbicide
a material used to kill insects or protect against their attack.
Insecticides
a chemical capable of producing a tumor.
carcinogen
the term applied to the relationship of the host, pathogen, and the environment in disease development
disease triangle
a chemical secreted by an organism to cause a specific reaction by another organism of the same species.
pheromone
a measurement of the immediate effects of a single exposure to a chemical
Acute toxicity
a fungicide applied after disease infection has occurred
eradicant fungicide
a weed that lives for more than 2 years
perennial weed
a virus disease of plants in which a leaf shows a symptom of light and dark-green mottling of the foliage.
mosaic
a group of plants with a particular species that has been cultivated and is distinguished by one or more characteristics; through sexual or asexual propagation, it will keep these characteristics
cultivar
chemical breakdown caused by exposure to light
photodecomposition
a herbicide applied after the weed or crop is present.
postemergence herbicide
a type of tiny roundworm that causes damage to specific kinds of plants
Nematodes