Tomato red four not suitable
Tomato can not turn red because the temperature does not meet the requirement of the growth of lycopene. The use of the drug red on the strain is an effective measure to promote the early listing of the tomato, but in the actual red process, the growth of the plant is often inhibited due to improper treatment. Some also cause phytotoxicity. Therefore, the use of drugs to remind red should pay attention to: (1) red should not be too early. Generally, when the fruit is fully grown and the fruit color turns white and becomes fried rice, the redness effect is best. If it is actually in the green stage, if it is not fully grown up, it will rush to red, and it will easily appear the phenomenon of uneven fruiting. (2) The concentration of the agent should not be too high. Too high concentration of tomato red solution will damage the base leaves and make the leaves yellow. Usually 40% ethephon 50 ml water 4 kg, fully mixed and used. (3) The amount of red fruit should not be too much at one time. The red fruit of each plant is generally 1 to 2 at a time, because the red fruit of a single plant is too much, and the amount of drug is too large, and it is easy to produce phytotoxicity. (4) The red liquid cannot contaminate the leaves. In the process of redness, the drug should be carefully handled. The small sponge can be used to dip the liquid and smear the surface of the fruit. You can also use the cotton gloves to dip the liquid and wipe the fruit surface with hands. China Agricultural Network Editor