Preplant Fertilization of Fruiting Microirrigated Strawberry

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  • 1 Agricultural Research and Education Center, University of Florida, 13138 Lewis Gallagher Road, Dover, FL 33527
  • 2 Gulf Coast Research and Education Center, University of Florida, 5007 60th Street East, Bradenton, FL 34203
  • 3 Agricultural Engineering Department, University of Florida, 101 Frazier Rogers Hall, Gainesville, FL 32611

Strawberry (Fragaria ×ananassa Duch.) was grown for two seasons with microirrigation. Preplant fertilizer treatments of zero, one, two, three, and four times the basic N and K rate of 17 and 15 kg·ha–1, respectively, were applied each season. Additional N and K were applied twice weekly through the microirrigation system at 1.12 and 0.92 kg·ha–1·day–1, respectively. Total marketable fruit yield and marketable fruit per plant were not affected by preplant fertilizer rate. The percentage of marketable fruit increased with increased preplant fertilizer to the 51N–45K (three times basic rate) kg·ha–1 rate the first season. Average fruit weight increased the first season but decreased the second season with increased preplant fertilizer. Plants were larger the first season in treatments receiving preplant fertilizer.

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