Grape seedless treatment is also a method to improve grape quality at present. At present, some grapes we eat have no stone or few stone. This is not because grapes are born seedless, but because most grapes are seedless when they grow.
At present, the treatment technology of seedless grapes is not perfect, so the use of pesticides should be avoided as far as possible during the treatment of seedless grapes to avoid adverse consequences on grape fruits.
Grape seedless treatment method
There are two methods for seedless treatment of grapes: soaking before flowering and spraying after flowering. The soaking method is to soak the grape ears one by one with gibberellin solution before flowering.
Generally, the spraying method after flowering is to spray gibberellin solution on the ear. When processing these two seedless grapes, we should also pay attention to avoid high temperature period, and generally choose to operate around 10 in the morning and after 3 pm.
Matters needing attention in grape seedless treatment
When grapes are denuclearized, the requirement for humidity is relatively high. Generally, the relative humidity is best to reach 80%, and it will be better to keep it for two days.
If it is too dry, it is not easy to carry out seedless treatment, which is easy to cause grape phytotoxicity. It is not easy to denuclearize before and after rain, which will lead to poor denuclearization effect. If it rains heavily after denuclearization, it is better to make up the homework after the rain.
Disadvantages of spraying pesticides at the same time in grape seedless treatment
For the same reason, spraying pesticides when grapes are denuclearized also has several disadvantages:
First, spraying chemicals will wash away and dilute gibberellin solution, which will greatly affect the seedless effect and lead to the decrease of seedless rate of grapes;
Second, the sprayed pesticides may react with gibberellin, resulting in pesticide failure and failure to achieve denuclearization.
Advantages and disadvantages of seedless grape treatment
Gibberellin is not suitable for all grape varieties.
For example, the seedless treatment of Kyoho grape with gibberellin not only has no effect, but also affects the growth of grape fruit, resulting in smaller grape fruit, and the concentration of gibberellin solution is not easy to be too large, which is easy to cause phytotoxicity.
Gibberellin and agricultural streptomycin can also be used together in grape seedless treatment.
This mixture can promote the seedless grape, also can promote the early maturity of grape, increase the soluble solid content of grape, and make grape go on the market in advance, but the disadvantage is that it affects the ear weight of grape.
The conclusion is that although grape seedless treatment has been widely used, the technology is not fully mature, so we should be cautious in grape seedless treatment. Everything has advantages and disadvantages.
Before taking medicine, you need to consult relevant professionals, and strictly prohibit the proportion of drugs, so as to avoid drug harm caused by excessive concentration, or the ideal nuclear-free effect cannot be achieved by too small concentration.