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1. Reasonable FertilizationAccording to the law of fertilizer demand of grapes, generally more nitrogen fertilizer is applied from germination to flowering, which can promote the formation of flower buds and improve the fruit setting rate.During the berry growth period, more phosphorus and potassium
All succulent parts of the plant, including fruiting pedicels, leaves, petioles, tendrils, shoots, and berries, may be attacked. However, lesions on shoots and berries are the most common and obvious. Symptoms on juicy shoots first appear as numerous small, round and red spots. The spots then enlarg
1. Too Much Nitrogen Fertilizer and Too Little Potassium FertilizerGrape is a grape variety that needs more potassium. The ratio of nitrogen, phosphorus, and potassium demand of grapes should be 1:0.7~0.9.2. Over IrrigationDue to the excessive water and fertilizer, the vegetative growth of new shoot
The grape berry development, when the grape berries grow rapidly after sitting on the fruit, is the most vigorous period of the vine's annual growth period.Stage I: Berry Formation to Lag Phase It is a period of rapid growth in the number of cells, during which fruit expansion is influenced by the q
Downy mildew is a serious leaf and fruit disease.CausesThe fungus overwinters in infected leaves of the previous year's crop on the ground. Spores infect leaves and fruit throughout most of the season. Leaf lesions typically appear as bright yellow spots on the upper surface of the leaf, with white
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