Lecture 18 - Pasture Rejuvenation Flashcards
(13 cards)
1
Q
t/f: sk grass/alfalfa hay prices are steadily increases
A
t
2
Q
pasture rejuvenation methods
A
- manage the stand without adding species
- maintain old stand and introduce new species
- break and reseed
3
Q
why do we need pasture rejuvenation
A
- stands are too old
- loss of desirable species
- weed invasion
- unfavorable weather (winterkill)
- soils (salinity, drainage)
4
Q
when do pasture rejuvenation not require adding any additional species
A
> 50% of desirable forage species
5
Q
pasture fertilizer application
A
- soil test
- N fertilization is not as profitable if P and K are inadequate
- broadcast or deep banded fertilizer
6
Q
carrying capcity
A
number of animals that can graze a pasture for a season without harming it
7
Q
must give rest period during the _________________
A
active growing season
8
Q
types of rotational grazing
A
rest-rotational grazing and deferred rotational grazing
9
Q
ultra-high stock density (mob grazing or flash grazing)
A
- high density, short period grazing
- long rest period
- weedy pasture
- can result in more uniform pasture utilization and manure distribution
10
Q
sod seeding
A
no-till or direct seeding into a perennial grass or legume stand without breaking the stand
11
Q
site preparation of sod seeding
A
- graze heavily in the fall to reduce competition
- use herbicide to suppress vegetation
- mowing
12
Q
sod seeding
A
- success is highly correlated to rainfall
- control competition after seeding
13
Q
pasture rejuvenation methods
A
- sod seeding
- mowing
- prescribed burning
