In an interview with the village of Gucheng Street, Shouguang City, the master chef Cai Nong reflected the mottled chlorosis phenomenon on the leaves of some tomato plants in his shed.
According to reports, mottled chlorosis occurs in the lower leaves of plants and there is no sign of development, and this symptom only appears in the western half of the greenhouse.
Careful observation of the leaves revealed that mottled chlorosis occurred in the middle part of the leaves, but as the plants grew, the defoliated leaf tissues recovered.
The symptoms seemed similar to those of phytotoxicity, but Master Hu denied the analysis of the reporter because the weather was not good and the tomatoes in the greenhouse had not been used for several days.
After observing the walkway, the reporter discovered signs of Hu using smoke, because there were many black marks in the walkway at the back wall. This was the residue of the vegetable farmers after using the smoke agent to smoke the medicine.
Is it caused by excessive use of smoke agent blade damage?
"Impossible. Although I am an old shed, when I use smoke, I also reduce the amount of smoke. I'm afraid of phytotoxicity. In addition, if it is a phytotoxicity, why is it concentrated in the western half of the shed?" Master Hu Doubt.
This also needs to start from the condition of the smoked shed. In many cases, the vegetable farmers more noticed the length of the shed, the concentration of medication, but they ignored the outside wind and wind. In the case of strong winds, the air pressure in the shed is certainly different. In this case, the smoke agent may accumulate on one end of the shed and cause phytotoxicity.
“Not to mention that the day that the smoker blew was east wind. When I ignited it was usually from the east to the west, and then I withdrew. But when that day was not smoked, the western part of the shed was already very sultry. The reporter's analysis was approved by the vegetable farmers.
Therefore, the appearance of mottled chlorosis in tomato leaves is caused by the excessive smoke concentration. Under the influence of wind power, most of the smoke agents are concentrated in the western half of the greenhouse, resulting in a sudden increase in the concentration of the smoke agent, and eventually leading to drugs. Harm occurred.
In view of this situation, the reporter recommended that vegetable farmers pay attention to the size of the outside wind when using the smoke agent, and adjust the concentration of the agent in due course.
After the occurrence of phytotoxicity, the foliar fertilizer No. 1 can be timely sprayed for remission.
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