Abstract
Abstract The root defect of carrot (Daucus carota L.) called cavity spot is injury due to feeding of the fungus gnat larvae, Bradysia impatiens (Joh.). In sand cultures and in the field, carrots treated with the systemic insecticide, aldicarb (2-methyl-2(methylthio) propionaldehyde 0-(methylcarbamoyl) oxime) were free of the defect. The symptoms of cavity spot on carrot roots grown in sand culture were the same as those on field-grown roots. Eliminating Ca from the nutrient solution reduced the Ca content of roots and leaves but had no effect on the incidence of cavity spot. Plants with Ca-deficiency symptoms on the foliage produced roots that, except for size, were indistinguishable from roots of plants receiving the complete nutrient solution.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the American Society for Horticultural Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
