Principles of Horticulture / Plant growth
Plant growth
Content
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Figure 8.1 Pumpkins
representing the large
amount of growth a
plant can produce |
In any horticultural situation, growers are concerned with controlling
and even manipulating plant growth. They must provide for the plants
the optimum conditions to produce the most efficient growth rate and
the end product required. Therefore the processes that result in growth
are explored in order that the most suitable or economic growth can be
achieved. Photosynthesis is probably the single most important process
in plant growth. Respiration is the process by which the food matter
produced by photosynthesis is converted into energy usable for growth of
the plant. Photosynthesis and respiration make these processes possible,
and the balance between these results in growth. It must be emphasized
that growth involves the plant in hundreds of chemical processes,
occurring in the different organs and tissues throughout the plant.
Growth is a difficult term to define because it really encompasses the
totality of all the processes that take place during the life of an organism.
However, it is useful to distinguish between the processes which result
in an increase in size and weight, and those processes which cause the
changes in the plant during its life cycle, which can usefully be called
development, described in Plant Reproduction and Plant
development.
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