Why does the tomato crack? Causes of tomato stem stalk cracking and its control method
Recently, many tomato farmers have developed this problem. The symptoms of tomato in these vegetable farms are basically the same, both of which are longitudinally split, and the medullary tissue of the stem gradually breaks down and is corked. However, it does not rot, the growth point is slowly yellowed, and the plant is short. According to the description, the possibility of infective diseases can be ruled out. It should be the longitudinal stalk of the tomato caused by boron deficiency. When tomatoes are deficient in boron, they cause stalk cracking. There are three main reasons: 1. The newly formed pectin can not bind to the cell wall when boron is deficient, resulting in disorder of cell wall structure; Second, because boron is not easy to move from the old tissue to the young tissue, the boron deficiency is often caused by the destruction of the top growth point of the plant, the plant is short, the axillary bud grows a lot, and the stem and petiole are easy to crack; Third, the lack of boron can cause the accumulation of phenolic compounds in plants, which will cause tissue necrosis and also cause the accumulation of lignin. Therefore, when tomatoes are deficient in boron, cork formation often occurs. For the above reasons, Huinong.com believes that the lack of boron in the shed is often caused by the vegetable farmers' lack of awareness of boron supplementation. Because most vegetable farmers are more extensive in boron supplementation, some do not apply boron after applying boron fertilizer in the base fertilizer. Some vegetable farmers supplement boron fertilizer mainly by relying on water soluble fertilizer and trace amount of boron in whole nutrient foliar fertilizer. Lead to insufficient absorption of boron in plants. In response to the above situation, Hui Nongwang Xiaobian suggested that vegetable farmers should pay attention to the following points in the use of boron fertilizer: (1) Bottom fertilizer should be applied to boron fertilizer. In general, 0.5-1 kg of boron fertilizer per mu of ground can basically meet the demand for boron in vegetable growth, while sandy soil should increase the amount of boron fertilizer. (2) It is necessary to grasp the key period of boron required for boron supplementation. That is, in the two key stages of seedling stage and flowering, the boron fertilizer is supplemented in time. (3) In order to crack the stem caused by boron deficiency, it is necessary to supplement boron in time. It is recommended that vegetable farmers pay more time to supplement boron fertilizer. Foliar fertilizer should choose chelating fertilizer with high utilization rate. Spray boron fertilizer once every 7 days, such as the expansion of agricultural fertilizer, to prevent cracking in the later stage. In addition, sheds with stalk cracking should pay attention to curing roots and enhance the absorption capacity of roots for boron fertilizer and other fertilizers. At the same time, it is necessary to spray chemicals such as quinoline copper or thiabium copper or zhongshengmycin to prevent bacteria. Sexual diseases invade through the gap. The reason for the cracking of tomato stems, Huinong.com Xiaobian today summarizes this for everyone. The needy vegetable farmers havetened to study quickly. You can continue to pay attention to Huinong.com because there are more planting techniques here!
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