Abnormal Head of Cauliflower and Ways for Prevention

1, early flowering. It means cauliflower plants have early fructification. (1) reasons: improper selection of varieties: lower temperatures or drought in seedling stage; low temperature after fix planting; inadequate soil fertility, bad nutrition and weak growth will lead to premature growth. (2) preventive measures: choose excellent varieties, planting at proper time; choose appropriate temperature when cultivating. Pay attention to the management of water and fertilizer. Avoid drought.
2, Yellow ball. When the curd has the size of fist, the bud turn yellow, the center of the bud depresses and turns to dried brown color. (1) reasons: during the process of curd expansion, the weather condition is high-temperature, more rain and few sunlight wet less sunshine; or the stem elongates, or outer leaves is over lush and the color of the ball become pale and yellow, quality decline. And the boron deficiency in the growth period will often lead to brown surface of the head and bitter taste. (2) preventive measures: apply adequate fertilization to the plants and prevent excess fertility. If the high-temperature lasts long in the no rain season, take measures to protect the ball such as make a strong light removable blade cover the curd, which can effectively prevent the ball to turn to yellow.
3,loose ball. That means accidented ball for the sake of the malnutrition of the buds. (1) reasons: First, the reproductive growth is inhibited; second, high-temperature makes incomplete differentiation of the flower buds; Third, low temperature in the late stage of nursing period, makes the bad growth of flower buds and form loose ball; fourth, the main root is damaged, and the plant’s growth is seriously impacted. (2) Prevention measures: nurturing robust seedlings. Watering frequently in the spring after fix planting. Keep proper humidity in the fields. Make the roots expand freely and prevent root rot disease. Avoid an excessive fertilizer.
4, Hair flower. It means there are hair around the surface of the ball. (1) Reasons: elongation of the flower stalk, differentiation of organs and formation of the sepal, and the hair is usually yellow-green or purple. (2) Prevention measures: planting at the prompt time, and avoid use the small and thin seedlings. Avoid partially using nitrogenous fertilizer. Drought missing forever, it is necessary to keep the moisture of the soil by timely watering under drought condition. Pick leaves to cover the ball if there are Long-term high temperature and sunlight.
5, purple flower. On the uneven surface of the cauliflower, there are inhomogeneous red, purple color. (1) reasons: low-temperature after the fructification. (2) Prevention measures: Select appropriate fine varieties, choose suitable time for planting. According to different characteristics of different periods, supply enough nitrogen fertilizer and water, pay attention to the management of the fields. (Reproduced)