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Category 1A weed management Questions and Correct Answers with Rationales (2026/2027)

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This document contains questions and verified answers for Category 1A weed management . It includes detailed explanations, revision-focused content, and exam preparation material suitable for 2026/2027 students.

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Category 1A weed management

Amino Acid Synthesis Inhibitors - ANS-act on unique enzymes to prevent the production of
positive amino acids
-ALS Inhibitors
-EPSPS
-Glutamine synthetase inhibitors

Ammonium fertilizer adjuvants are added to which plant - ANS-velvetleaf- which will increase
herbicide pastime on the species

AMS is commonly used with ____ to lessen antagonism as a result of cations found in tough
water - ANS-glyphosate

annuals - ANS-A flowering plant that completes its complete lifestyles cycle in a single 12
months or growing season.

Auricles - ANS-fingerlike projections of the blade

barnyardgrass - ANS-ANNUAL
-Ligule-absent
-Blade/sheath-hairless, purplish near base

biotype - ANS-resistant plant-no longer vulnerable to the herbicide

Broadleaf parts - ANS-cotyledons, authentic leaves, hypocotyls & petioles

carryover - ANS-the situation while herbicides persist in enough quantities to injure succeeding
vegetation

Cell Membrane Disruptors - ANS-react inside the plant to form compounds that damage mobile
membranes
-PPO
-PS I

chemical control - ANS-herbicides, perticides, fungicides , etc.

Cold/wet soil ______ the injury capacity of a few soil-applied herbicides - ANS-growth

commonplace lambsquarters - ANS-

, commonplace milkweed - ANS-PERENNIAL
-hypocotyl-hairless & light green to pink-tinged
-cotyledons-brilliant beneath & protected w/ scattered minute granules above
-actual leaves-contrary & have a waxy appearance

Common Ragweed - ANS-ANNUAL
-hypocotyl-hairless & crimson to darkish inexperienced
-cotyledons-club formed w/ rounded apex
-True leaves-opposite & finely divided w/ many lobes (lacy look)

not unusual waterhemp - ANS-ANNUAL
-cotyledons-oar fashioned
-seedlings-easy & flowers remain hairless

cotyledons - ANS-first pair of "leaves"

crop oil pay attention (COC) - ANS-spreads the herbicide throughout the leaf surface; continues
the surface wet longer, & aids penetration into the cuticle

move-resistance - ANS-resistance of a weed populace to 2 or extra herbicides that have the
equal mode or site of motion

cultural manipulate - ANS-seed, planting date/depth, crop rotation

dandelion is an instance of - ANS-easy perennial

early pre plant (EPP) - ANS-made numerous weeks prior to planting

jap black nightshade - ANS-ANNUAL
-hypocotyl-dark purplish & hairless
-cotyledons-ovate w/ pointed tip
-actual leaves-alternate & ovate w/ a wavy to toothed margin

example of ALS-inhibiting herbicide - ANS-chlorimuron, cloransulam

foliar implemented Herbicides - ANS-absorbed thru leaf; translocated to the website of motion;
kill on contact

germinate from seed in the spring and produce a root system & rosette of leaves at some point
of 1st year - ANS-biennials

Giant foxtail - ANS-ANNUAL
-ligule-hairlike

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