Tomato wilt and bacterial wilt

Symptom difference

Both of these diseases can cause tomato plants to wilting, and severe cases cause dead trees. The easiest way to identify is to cut the diseased stem into a clear glass filled with clear water. If there is mucus overflow, it is blight, and if there is no mucus, it is wilt.

1. Bacterial wilt is first of all a bacterial disease. The leaves show different degrees of dryness. At the same time, there are adventitious roots at the bottom of the plant. Tomatoes appear hollow inside the stems of the plants, and the tomatoes with wilting symptoms can be cut off. It is clear that the vascular bundle color has turned brown. It is precisely because these vascular bundles have been destroyed that nutrients and water cannot be transported normally upwards, which causes the tomatoes to appear wilting symptoms. Vegetable medical network experts remind everyone that if the tomato bacterial wilt is not treated in time, it will appear dead after several times of repeated wilting, causing great losses to the vegetable farmers.

2 , blight is often expressed after colonization. In the early stage of the disease, the leaves that are generally closer to the ground are yellow, and finally brown and dead, and the dead leaves remain on the stems; the leaves on one side of the stem are yellow, and the leaves on the other side are normal; there are also leaves on individual branches. The yellow side is yellow and the other half is normal. When the disease is serious, the diseased leaves expand from the bottom to the top, and only a few leaves at the top remain, and the rest are dead. The incidence is light, except for the yellow leaves of the leaves closer to the ground, the rest are normal.

The root of the diseased plant showed brown rot or local necrosis. The vascular bundle was yellowish brown when the base of the stem was cut. According to experts in the vegetable medical network, the main symptom of the disease is that the leaves of the plant are yellow after the disease, and the pink mold is often found at the base of the stem when wet. Moreover, the root cause of bacterial wilt is small.

Control method

1. The best way to prevent and cure the above two diseases is to irrigate the roots of the medicine, but pay attention to prevention. It is preferable to select a drug having strong systemicity when selecting a drug, for example, a drug such as chlorobromoisocyanuric acid or copper rosinate. For tomatoes that are not ill, protective agents such as streptomycin, neutrophin, and chlorhexidine can be used to prevent bacterial wilt.

2 , control of blight can choose: carbendazim + Fumei double + carbunion root irrigation, the effect is significant.

3 , tomato plants that have died of morbidity, can not be abandoned in the greenhouse, should be buried outside the shed, while disinfecting the soil. Bacterial wilt and blight can be spread by running water. Flooding of large water can spread the pathogens quickly. Therefore, experts in the vegetable medicine network remind everyone that there is a flood in the greenhouse where dead symptoms occur. And pay attention to "first rooting and then watering."

4. Pay attention to the rational application of nitrogen fertilizer and apply organic fertilizer and phosphorus and potassium fertilizer to enhance the disease resistance of the plant. At the same time, pay attention to cultivating the robust roots of the plants.

 

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