How to get more fruit set on jujube trees? Remember these three tips
1. Rationalized control. Before flowering (around early May), apply 0.5-0.75 kg of urea per large tree and 0.25 kg per young fruiting tree; after flowering, during the young fruit development stage (mid-to-late June), apply a nitrogen, phosphorus, and potassium compound fertilizer once more, about 0.75 kg per tree. At the early full-bloom stage, spray a 10-50 ppm gibberellin solution or at the full-bloom stage...
1. Rationalized control. Before flowering (around early May), apply 0.5-0.75 kg of urea per large tree and 0.25 kg per young fruiting tree; after flowering, during the young fruit development stage (mid-to-late June), apply a nitrogen, phosphorus, and potassium compound fertilizer once more, about 0.75 kg per tree. Spraying a 10-50 ppm gibberellin solution at the early full-bloom stage or a 0.3% borax solution at the full-bloom stage can both significantly increase the fruit set rate.
2. Irrigate before flowering and spray water during flowering. If the soil is too dry before flowering, irrigate in time to ensure stable fruit set. During the full-bloom stage of jujube trees, spraying water once every 2-3 days can promote pollination and fertilization and increase the fruit set rate.
3. Place bees in the jujube orchard. Jujube flowers are typical insect-pollinated flowers, and placing bees during the flowering period can increase the fruit set rate. Generally, 1 box of bees per 6-10 mu of jujube orchard is sufficient.