Influence of Fungicide and Insecticide Applications on Persistence of Ladino Clover1
- J. R. James,
- L. T. Lucas,
- D. S. Chamblee and
- W. V. Campbell2
Ladino clover (Trifolium repens L.) is the most important perennial forage legume grown in North Carolina; however, stands often begin to decline within 2–3 years after seeding. An entomological-pathological complex has been reported as a major cause for decline of ladino clover. The objectives of this study were to determine the influence of benomyl [methyl l-(butylcarbamoyl)-2-benzimidazolecarbamate] and carbofuran (2, 3-Dihydro-2, 2-dimethyl-7-benzofuranyl methylcarbamate) applications on disease and/or insects which influence persistence of ladino clover.
The percent ground cover of ladino clover in control, benomyl, carbofuran, and carbofuran plus benomyl treated plots after 3-1/2 years was 12, 24, 75 and 88%, respectively. Plants treated with carbofuran had less root injury from the clover root curculio (Sitona hispidula Fab.) than fungicide and check plots. Carbofuran and carbofuran plus benomyl applications decreased root and stolon rot and increased yield and persistence of ladino clover. None of the treatments significantly increased tap root longevity. Insect damage and root and stolon rot were highly correlated in plant samples collected throughout the experiment. Results indicate that a pathological-entomological complex is a major factor involved with lack of persistence of ladino clover.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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