toopic 11

Question 1

importance of temp-crops agriculture + control

Answer 1

growing season-frost period
evapotrasnspiration rates
shelter+meshing like tarp

Question 2

light
importance+control

Answer 2

longer days-<milk
mating season-shorter days for sheep
artificial lighting

Question 3

importance of water

Answer 3

metabolite
preciptation of water -unpredictable

Question 4

issues with water+control

Answer 4

dissolved substances-may affect growth
waterlogged soil-fungal disease
less heavy machinery =less soil compaction
adding DOM increases water retntion of soil
water shortage
livestock-increase compaction of land ned to walk further for food-increase desertification

Question 5

soil fertility
2 types of nutrients
types of fertiliser

Answer 5

macronutrients + micro nutrients
organic-slower release of nutrients-control-nontoxic
inorganic-faster-control-toxic

Question 6

2 application of fertiliser

Answer 6

cultural and mechanised-
natural-weathering
spray by humans

Question 7

alternative crop growths-hydropnics

Answer 7

hydroponics-
less plant energy wastred in roots more used in fruit+less pathogen
very intensive-high nutrients+energy

Question 8

cause of compaction
solution

Answer 8

heavy machinery
death of worms by fertiliser
adding of DOM-no tillage
ploughing

Question 9

ph issue

Answer 9

increases nutrient solubility
increase-limestone
decrease-powdered sulfur

Question 10

topography

Answer 10

aspect
frost pockets
relief of the land-run off
machinery msay not be usuable

Question 11

cultural pest crontrols

Answer 11

predator habitats-hedgerows
sterile matnig technique
-radiation exposure
pheromone trap -attracts pests-specific
genetic resistance

Question 12

chemical pest controls features

Answer 12

toxic-higher toxicity lower amount needed
specifity - taxa range
persistence
solubility-meningitus-bioaccumulation

Question 13

how chemical pesticides applied

Answer 13

contact action - damages plant tissue
systematic action- absorbed by roots -eaten by humans cant be waashed

Question 14

antibiotics

Answer 14

killsbacteria-high density populations-risk increase resistance

Question 15

whatdo hormone pesticides do

Answer 15

starts metamorphisi earlier-high specifity

Question 16

why are integrated controls used

Answer 16

combines techniques more effective-
predator habitats + crop rotation

Question 17

sexual reproduction breeding techniques

Answer 17

selective breeding-cheviot sheep
gm-bt crops-natural toxin against insects
embryo transfer

Question 18

manipulation of food species-population control

Answer 18

monocultures-easier to cultivate-disease can spread easily

Question 19

control of genetics-asexual plants+animals advantages and disadavbtage

Answer 19

geneticlaly identical -characteristics predicatbale
no genetic variation-characteristics arent improved

Question 20

control of geentics animals-asexual reproduction advantages

Answer 20

if valuable aniamls die they can be easily replaced
herds can be culled if disease breaks out

Question 21

energy subsidies examples-

Answer 21

pumping of irrigation water
transport of food for consumers
nitrate fertiliser production

Question 22

envinronemntal impacts of farming+control

Answer 22

drainage -death of wetland species
bio-control species-may eat indiginnous species

Question 23

pollution in agricyulture

Answer 23

pesticides-non target species
nitrate toxicity-leachate

Question 24

change in hydrological cycle

Answer 24

soil compaction-s.r.
irrigationi of water can deplete water systems

Question 25

social factors affecting agriculture

Answer 25

religious factors-mus;im mo pork
ethical issues-
free range+food miles
fair trade

Question 26

t6echnology agriculture

Answer 26

pesticides fertiliser
survey technology-spread of disease+soiol water conetn

Question 27

reducing food surpluses

Answer 27

quotas
alternative crops-biofuels
agri enviro scheme