During the harvesting period of mulberry strawberries, many growers tend to focus only on early-stage management and neglect the importance of later care. This oversight often leads to a decline in the secondary fruit yield, lower quality, and ultimately affects the farmers' income. The following issues may arise during the late growth stage of mulberry strawberries, as highlighted by **Chinese Pesticide Network**.
First, water stress is common in mid-June when temperatures rise, wind speeds increase, and dry hot winds become frequent. At this time, strawberry plants experience high evaporation rates, leading to rapid soil moisture loss. Water shortages can negatively impact flowering, fruit development, and overall plant health.
To address this, it’s recommended to use flood irrigation under the plastic mulch. Before watering, lift the film between the rows and use wooden sticks to prop up both ends. Allow water to flow into the furrows, ensuring even distribution before re-covering with the mulch. This method helps reduce soil compaction while maintaining proper moisture levels. In general, clay soils should be watered and fertilized every 15–20 days, while sandy soils require more frequent watering, about every 10–20 days.
Second, pest infestations become more severe as temperatures rise. Aphids, red spider mites, and other pests multiply rapidly, posing a serious threat to strawberry crops.
To control aphids, a 10% imidacloprid solution diluted at 1:1000 is effective. For red spider mites, an 800–1000 times dilution of dicofol emulsifiable concentrate is recommended. Spraying should be done between 8 and 11 am, when mites are most active. When applying pesticides, make sure to spray the underside of the leaves, as that’s where the pests typically reside, for better effectiveness.
Third, some strawberries may develop a “fattening†phenomenon after the first harvest due to heavy nutrient consumption. If nutrients aren’t replenished, this can affect both the yield and quality of the second crop.
To prevent this, it's important to apply specialized trace element fertilizers such as Shibao or potassium dihydrogen phosphate. These help boost soil organic matter and replenish missing micronutrients like manganese, zinc, and calcium. Additionally, high-efficiency phosphorus and potassium fertilizers should be added. During irrigation, dissolve 25 kg of diammonium phosphate and potassium sulfate per mu into the water for even nutrient distribution.
By paying attention to these critical aspects of late-stage care, growers can significantly improve the quality and productivity of their mulberry strawberries. Proper irrigation, timely pest control, and balanced nutrition are essential for long-term success in strawberry cultivation.
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