Weed and Bush Control Flashcards
T/F: herbicides are the most widely used pesticide
True
weeds reduce the yield of valuable crops by competing for
moisture, nutrients, and light
weeds are best identified from:
mature plants
Annual weeds complete for their life cycle within:
one year
almost 100% control is obtained if you treat annual weeds at the seedling stage. at the vegetative stage, control drops to about what precent?
75
T/F: temperature influences the speed at which an herbicide
true
which method of application mixes the pesticide into the soil using tillage equipment
soil incorporation
what factor influences the choice of pesticide application method
the pests natural habits, the target site, and the pesticide being applied
brush cuts livestock production by ____ percent
50
what types of method can be used to control brush
biological, mechanical, and chemical
what is “thin lining” when applying an herbicide
applying it horizontally around the base of a tree
T/F: stressed plants are best treated with foliar application
False
broadcast application is the uniform application of a pesticide to a __________
whole area
T/F: tree injectors treat several trees at the same time
false
pelleted herbicides are most effective when the plants are
dormant
