Discuss the different methods horticulturalists may use to control the growth rate,
size, and shape of plants. Which are the advantages and disadvantages of each
method?
What will be an ideal response?
The methods horticulturalists use to control the growth rate, size, and shape of plants
may include:
• Chemical and natural stimulants, like gibberellins, that cause plants to grow taller or
faster.
• Chemical retardants that cause plants to grow slower or cease growing at a certain
point.
• Rooting hormones that cause cuttings to root faster
• Dwarfing rootstock for tree fruits
• Plant biostimulants that stimulate soil microbial activity and improve soil cation
exchange capacity, stimulate plant growth, and promote disease resistance. They also
reduce the need for fertilizers.
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