How to promote berry enlargement in Hutai No. 8 grapes? These practical tips are worth mastering

Hutai No. 8 needs suitable fertilizers for berry enlargement; Qibao, Baomeiling and others are all effective products. The enlargement treatment should be carried out 15 days before budding, and fertilizer and water management can be intensified.

Hutai No. 8 berry enlargement tips

1. Qibao performs better than domestic gibberellin. Its use concentration varies greatly depending on variety, time and purpose; the commonly used concentration is generally 5000—40000 times. When sprayed to wet the whole plant 15 days before flowering, the use concentration is 30000—40000 times, mainly to promote faster and stronger growth of branches and leaves, elongate the inflorescence and remove seeds. After physiological fruit drop is complete, the use concentrations are 5000 times, 10000 times, and 20000 times respectively. It is generally not used from flowering until before fruit drop, because grapes generally do not bloom uniformly, and using it can lead to large and small berries. In addition, note that the use concentration for seeded grapes is generally lower than that for seedless grapes.

2. Both Baomeiling and streptomycin have the effect of reducing stalk thickening and softening the stalk. Streptomycin in particular has the effect of inhibiting lateral thickening and reducing lignification and brittleness of the fruit stalk. However, gibberellin accounts for half of the total active ingredients in Baomeiling, and its formulation with benzylaminopurine has the good effects of preserving flowers and fruit, improving quality, promoting early ripening, and promoting flower bud differentiation. Therefore, using Baomeiling has more benefits than using streptomycin. The commonly used concentration of Baomeiling is 8000 times. After Baomeiling is mixed with Qibao, the effect of promoting the longitudinal diameter of berries is mutually additive and better than Qibao alone. In particular, 4 days after grape fruit drop, spraying all stems, leaves and flower clusters with Baomeiling alone not only elongates the cluster and removes seeds to promote seedlessness, but also promotes flower bud differentiation. For long-seeded grape varieties such as White Chickeart and Golden Finger, the mixed use of Qibao and Baomeiling will have a better effect.