Optimization of chemical fertilizer application for blueberry vegetative growth, fruit quality and soil condition

Commercial cultivation of blueberry has rapidly expanded in China recent years. However, suboptimal fertilization results poor growth and management practices orchards. The present study studied southern highbush southwest China. We evaluated the effects inorganic nitrogen, phosphorus, potassium fertilizers at different doses. Plant vegetative growth, leaf photosynthesis parameters, fruit quality soil nutrient contents were analyzed. Application ammonium sulfate enhanced weight, sweetness, content, including vitamin C anthocyanin contents. Comparison P K fertilizer treatments revealed that 30 g P/plant combination with K/plant conferred superior plant improved sweetness content. Using as N source monopotassium phosphate contributed to maintenance acidity