During which period is the development of cotton bolls critical?

The development of cotton bolls is crucial during the flowering period because it is at this stage that the flowers, once pollinated, will develop into cotton bolls. The flowering period is where the plant's reproductive success is determined; successful pollination and subsequent flowering lead to the formation of bolls, which contain the cotton fibers.

During this time, environmental factors such as temperature, humidity, and adequate moisture levels are vital for the optimal growth of the flowers and, ultimately, the bolls. Any stress during this period can negatively impact yield and fiber quality. Therefore, understanding that the flowering period is where the transition from flower to boll occurs highlights its critical importance in cotton cultivation.