New Mexico FFA Floriculture Practice Test

DIF stands for the difference between daytime and nighttime temperature, which is a critical concept in crop height management, particularly in the context of growing conditions for plants. The DIF is used to help manipulate plant growth and control height by regulating the temperatures in the growing environment.

In plant science, a greater differential between daytime temperatures (usually warmer) and nighttime temperatures (usually cooler) can lead to shorter, more compact plants. Conversely, if the temperatures are more consistent or the nighttime temperatures are too high compared to daytime levels, plants may grow taller and become more leggy.

Understanding DIF is essential for growers aiming to produce plants that meet specific height criteria, as adjusting temperature settings can directly influence plant growth patterns. This is particularly significant in floriculture where height control can impact the aesthetic quality of ornamental plants and flowers.