1、 Sun rose seedless treatment formula

The formula of sun rose seedless treatment is mainly gibberellic acid 20 mg / L and clopidourea 3 mg / L. The sun rose can form a core after more than 24 hours of flower decay. When it exceeds 72 hours, the core can develop and improve. At this time, it is more difficult to eliminate the core. When the sun rose is treated without a core, you can choose to form a core but not develop and improve, that is, between 24-72 hours after flower decay

2、 Precautions for seedless treatment of sunshine rose

Applying sufficient fertilizer: gibberellic acid needs to be used for nuclear free treatment. The premise of using gibberellic acid is to apply sufficient fertilizer. Therefore, before nuclear free treatment, we should strengthen management, cultivate strong tree potential, strengthen the application of organic fertilizer, mineral fertilizer and trace element fertilizer, and spray foliar fertilizer, which is conducive to increasing leaves, enhancing tree potential and better nuclear free treatment

Sufficient water before flowering: ensure the water before flowering, then dry the ground to increase the ground temperature, and deal with the seedless situation after the ground temperature is restored

Pruning in advance: you can prune the sunshine rose in advance to remove the ears with poor growth, reduce the consumption of nutrients and promote the development of the remaining ears

Prevent sunburn: after treatment, be sure to prevent sunburn and avoid sunburn of grapes

Concentration control: when using formula treatment, the concentration of formula can be increased in case of low temperature, continuous low temperature can be treated in advance, and the concentration can be reduced for weak trees

Time selection: when nuclear free treatment is carried out, you can wait until after dew elimination to avoid high temperature period