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Abstract
Aged pine sawdust and bark are likely to be the most widely used media for sweet potato transplant production in heated beds in north Alabama. Transplant production in these media, however, may be limited by acid conditions. This experiment was conducted to determine the effects of the application of lime (0.0, 2.2, and 4.4 kg/m3) on early‐season production of ‘Georgia Jet’ sweet potato transplants. Differences in transplant yield and quality due to media were not obtained at the first harvest, but heavier total early‐season transplants were obtained with aged pine bark than with aged pine sawdust. At the first harvest, the highest transplant number (936 transplants/m2) and weight (1.685 kg/m2), and the greatest mean transplant length (23.4 cm) were obtained with 2.2 kg/m3 of lime, but the total early‐season transplant numbers increased linearly from 1025 to 1154 transplants/m2 with the addition of lime. Total early‐season transplant quality parameters, however, did not respond to the addition of lime in the same manner. Mean transplant weight decreased from 2.31 to 2.17 g with the addition of lime, and greatest mean transplant length was obtained with 2.2 kg/m3 of lime. High media pH and petiole Ca and Mg concentrations were also obtained as a result of the lime applications.
Notes
Horticulture Department, 101 Funchess Hall.