Six, early maturity

Ethephon

It is a commonly used medicine for early coloring. It is used depending on the concentration and period. It is generally applied at the beginning of berry ripening at 100-500 mg/L, and the colored varieties are used at 5% to 15% of fruit. , can mature 5 to 12d in advance. Tests have shown that when the fruit begins to mature, the spikes of the giant spikes are immersed in 250-300 mg/L of ethephon, which can mature 6 to 8 days earlier. However, the use of ethephon causes the separation between the grain and the stem to form a separation layer. Therefore, we must master the concentration, spray in stages, harvest in stages, and sell in stages to prevent losses.

The optimum concentration of ripening for different grape varieties is different, and the production should be tested to determine the optimal treatment concentration and method.

Gibberellin 

Impregnation with low concentration gibberellic acid can make the ripening period of grape berry greatly advanced. The treatment of arantimycin with ear can be listed nearly one month ahead of time, and its economic benefit will be greatly improved.

Seven, delayed maturity

ATOA (2-indolozolethioacetic acid) carefully sprays the fruit with 10~100mg/L of the drug during the growth period of the young fruit to the beginning of maturity, which can delay the ripening of the grape and delay the ction to prolong The period of supply of grapes. The higher the concentration, the more obvious the effect of maturity, but it is necessary to pay attention to the grape leaves are more sensitive to this drug. Generally, 200mg/L or more can form phytotoxicity. When using, care must be taken not to spray the liquid onto the leaves.

Eight, fruit denuclearization

Gibberellin

The commonly used plastic cups are immersed one by one, and the concentration of the rose buds treated by the dipping method is 100 mg/L before flowering, and about 0.5 mL per pan. After flowering, the growth of the ear was increased by about 1.5 mL per ear. The pre-flowering treatment was carried out by artificial flower ear dipping method, and the shower was sprayed with a hａnd sprayer after the flower. You should choose to avoid the time when the temperature is higher than 30 degrees before 12 o'clock in the morning or after 3 o'clock in the afternoon. The relative humidity is around 80% and can be maintained for 2d. The weather is dry, which is easy to cause phytotoxicity, and the treatment effect is not good in rainy days. This weather should be avoided when operating in the field. If it is rained after 8 hours of treatment, it will not be treated again. If the rainfall is strong, it will be done again. After using gibberellin, 74% of the fresh grapes can be produced, and the raisins can also increase by 50.3%. Rose dew has more seeds. After using gibberellin, gibberellin makes the growth rate of grape pollen and embryo sac different, thus forming seedless fruits.

Zhengzhou Delong Chemical CO., Ltd. is the production base of plant growth regulators in China, which established in 2009, specializing in offering plant protection products. If you have any question, contact us any time.