Gibberellin is a plant growth regulator that we are very familiar with. It has the functions of promoting the elongation of stems, alleviating the harm of paclobutrazol, breaking the dormancy of seeds, promoting the germination of seeds, promoting the flowering and setting fruit, and making the fruits mature earlier. Used in agricultural production. Recently, Liu Ruiqiang, a tomato cultivation expert in Xinglong Village, Datian Township, Shouguang City, Shandong Province, discovered another use of gibberellin to prevent tomato cracking.
Tomato cracking is a disease that is commonly occurring in tomato in late autumn and has caused serious damage. However, in the prevention and control of fruit cracking in tomatoes, in addition to the use of scientific management of water and fertilizer, and reasonable control of greenhouse environment, it is difficult to find an effective product to prevent cracking, cracking fruit has become a stumbling block to affect tomato production. After a large number of experiments, Liu Ruiqiang found that the smart spray 2010-6 ~ 3010-6 gibberellin can effectively prevent tomato cracking.
The gibberellin is sprayed on the top fruit (the seventh ear fruit) of the tomato when it is sitting and has bean size (not to be sprayed at the flowering period to prevent poor fruit setting or plant leggy). At this time, the bottom ear of the tomato is turning to the coloring stage. The middle ear of the tomato is in fruit expansion period, spraying gibberellin can play a role in stretching the peel cells and promoting the growth of the peel, so as to achieve the purpose of preventing cracking.
The concentration of gibberellin should be strictly controlled. If the spray concentration is too large, it is easy to form empty fruit, which will also reduce the benefits. Under normal circumstances, when the temperature in the booth exceeds 25°C, the spraying concentration can be 2010-6. If the temperature is lower than 25°C, the spraying concentration should be slightly increased, and spraying can be performed in 2510-6-3010-6. In addition, it should be noted that there are differences in the spray concentration in different varieties, and it is best to test the small area before spraying, and then spread it over a large area.