Rooting powder and weedkillers

Question 1

What are hormone rooting powders?

Answer 1

• contians auxin
• stimulates production of roots
• makes it easier to propagate new plants from plant cutting

Question 2

What is a cutting?

Answer 2

• small piece of plant stem, usually with leaves
• if placed in water or compost, roots may appear and a new plant forms
• if dipped in hormone rooting powder increases the chances of roots forming and of successful propagation

Question 3

Why are hormone rooting powder commerically important?

Answer 3

• easier to develop couttings to sell and for individuals taking their own cutting

Question 4

What is microprpagation?

Answer 4

• larged scale propagation
• thousands of new plants are grown from a few cells of the original plants
• plant hromones are essential
  
  • control the production of the mass of new cell and then the differention of the clones into new plants

Question 5

What happens if the balance of plant growth hormones is lost?

Answer 5

• can interrupt metabolism of the whole plant and may lead to plant death
• sometimes this is important

Question 6

Why are weeds damaging in food production?

Answer 6

• commercial food crobs are vital globally
• weeds interfere
  
  • competing for light, space, water, and minerals

Question 7

How do hormonal weedkillers work?

Answer 7

• main staple founds are mainly narrow leaved monocot plants
• most weeds are broad-leaved dicots
• if synthetic dicot auxins are applied as weedkiller, they are absorbed by the broad-leaved dicots and affect they metabolism
• growth rate increases and become unsustainable so they die
• narrow-leaved crops unaffected

Question 8

why are hormonal weed killers important??

Answer 8

• simple and cheap
• low toxicity to mammals
• selective