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Phosphorus, zinc, and boron influence yield components in Earliglow strawberry


, : Phosphorus, zinc, and boron influence yield components in Earliglow strawberry. Journal of the American Society for Horticultural Science 118(1): 43-49

The main effects and interactions of soil-applied P, B, and Zn on yield and its components were examined in the field at two pH, levels with 'Earliglow' strawberries (Fragaria times ananassa Duch.). Applied nutrients had significant effects on several yield components, but responses depended on the levels of other nutrients or the soil pH. At a soil pH of 5.5, yield responded linearly to B and quadratically to P. At pH 6.5, P interacted with B and Zn. Fruit count per inflorescence was the yield component most strongly associated with yield, followed by individual fruit weight. However, these two yield components responded differently to soil-applied nutrients. Foliar nutrient levels generally did not increase with the amount of applied nutrients, but often an applied nutrient had a strong effect on the level of another nutrient. Leaf nutrient levels were often correlated with fruit levels, but foliar and fruit levels at harvest were not related to reproductive performance. Our study identifies some of the problems inherent in using foliar nutrient levels to predict a yield response and demonstrates how plant responses to single nutrients depend on soil chemistry and the presence of other nutrients.

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