問題一覧
1
Mature more than one growing season
perennial weed
2
Study of interaction and relationship
weed ecology
3
the numbers and implications
YImplication
4
Sloping or leading upward
ascending
5
Study of weeds and their control
weed science
6
Horizontal shoots, ex. Itch grass
erect
7
Largest reservoir of seed
YResult
8
Lying along the ground, along surface
decumbent
9
Narrow elongated season
sedges
10
A resting stage
seed dormancy
11
Particularly undesirable
Noxious weed
12
Stem that grow horizontally
creeping
13
Plants produces toxins
alellopathy
14
Grow well in upland, drier soil
dry land weed
15
Grass stem are called
culms
16
Length of seed buried
weed seeds longevity
17
Leaves arise alternately in two rows
grass
18
Reproduce by means of vegetative propagules
asexual weed
19
A baby plan, arise from the mother plant
off-shoot
20
One that mature in one growing season
annual weed
21
Conducted in Michigan 1804-197/
beals experiment
22
Short thickened underground stem
tuber
23
Modified aboveground stem that creep and roots at the aide
stolon
24
Study of establishment, growth
weed biology
25
Modified underground stem with buds
rhizome
26
Shorter but wider leaves
broadleaves
27
Grow well in lowland, moist soul
wet land weed
28
Capable of climbing
twinning
29
Reproduce by means of seeds and propagules
sexual weed
30
The process of initiating growth in seeds
weed seed germination
31
Rigidly upright or straight
prostate