Lecture 19 - Annual Forage Crops

Question 1

methods of extending grazing season

Answer 1

swath grazing, bale grazing, crop residues, corn grazing, silage

Question 2

when can annual forage crops be grazed

Answer 2

can be grazed 4-6 weeks (6inch tall) after spring seeding

Question 3

difference between seed and forage oat

Answer 3

forage has larger, broader leaves

Question 4

forage wheat

Answer 4

• lodge resistance
• wild oats control
• longer growth time

Question 5

when to cut oat for silage

Answer 5

late milk stage

Question 6

when to cut barley for silage

Answer 6

soft dough stage

Question 7

the harvested yield of oats forage increases with increasing maturity until ___________

Answer 7

dough stage

Question 8

benefits to using annual legume forage pea for silage/greenfeed

Answer 8

• adapted to the dark brown, black, and grey soil zones
• high protein
• fix nitrogen

Question 9

forage pea has _________% single crop seeding rate of cereals

Answer 9

30-50

Question 10

t/f: typically need a higher percentage of pea crop when planted with other crops

Answer 10

f, not always, as lower pea percentage has similar amount of biomass

Question 11

when are winter cereals for pasture seeded

Answer 11

seed in spring or summer (vegetative growth only)

Question 12

seeding date for fall seeded fall rye

Answer 12

optimum Aug 15-Sept 15

Question 13

when do nitrates accumulate in annual cereals

Answer 13

following a period of stress:
- extreme high temp or drought
- frost/hail
- following N fertilization

Question 14

toxicity is possible when ______% nitrates on a dry matter basis

Answer 14

> 0.5