Oregon Agriculture herbicide exam
Questions And Answers With Latest Quizzes
tillering stage - Correct Answer-formation of erect shoots from crown of grass
jointing stage - Correct Answer-first node of the stem appears above the soil surface
summer annuals - Correct Answer-sprout from seed in spring, die before winter
winter annuals - Correct Answer-sprout form seed in fall, die before summer
biennial - Correct Answer-grow for two years, develop roots and rosette in first year,
send out seed second
rosette - Correct Answer-a cluster of leaves growing around the base of a plant
spike stage - Correct Answer-leaves still within the coleoptile or tightly rolled to form a
spike
Flag stage - Correct Answer-early stage of onion. Bent tip of seed leaf
Creeping perennials - Correct Answer-produce seed and rhizomes or stolons.
Bulbous perennials - Correct Answer-reproduce by seed, bulbests or bulbs
simple perennials - Correct Answer-tap root, produce seed
broadleaves - Correct Answer-broad leaves, coarse root system.
grasses - Correct Answer-narrow leaves, upright parallel veins
Sedges - Correct Answer-triangular stems
dodder - Correct Answer-parasitic plant
when to apply herbicide for perennials, annuals, bi annuals - Correct Answer-ALL
WEEDS SUSPTABLE AT SEEDLING STAGE
perennials: early to late bud stage
Biannials: rossete stage
Annuals: seedling stage
