ISHS Acta Horticulturae 808: II International Symposium on Tomato Diseases
INTEGRATED MANAGEMENT OF TOMATO YELLOW LEAF CURL IN PROTECTED TOMATO CROPS IN SOUTHERN ITALY |
| Authors: | A. Fanigliulo, S. Comes, A. Crescenzi, M.T. Momol, S.M. Olson, M. Sacchetti, L. Ferrara, G. Caligiuri |
| Keywords: | tomato, TYLCSV, UV reflective mulch, integrated management |
| Abstract:
A study was performed in Calabria region, southern Italy, during summer-winter period 2005-2006 and 2006-2007, aiming at evaluating various management tactics for the control of Bemisia tabaci vectored Tomato Yellow Leaf Curl Sardinia Virus in protected tomato crops. The management practices evaluated, alone or in combination, were the use of UV reflective mulch (UVRM), the SAR inducer Acibenzolar-S-methyl (Actigard) and two insecticides, Imidacloprid (Admire 2F) and Thiamethoxam (ACTARA 25WG). The parameters considered in the study were the effects of the treatments on plant height, number of flower bunches, fruits per bunch, marketable yield, TYLCS disease incidence and, just in the theses Actigard/no Actigard, of Oidium (Leveillula taurica) incidence. The highly UVRM alone was effective in reducing disease incidence. However, its association with Actigard signifi¬cantly reduced to a greater extent TYLC disease incidence. By contrast its association with insecticides, resulted in a moderate reduction of disease incidence, significant only within the first three months after plant setting. The use of Actigard combined with the insecticides on UVRM reduced the disease incidence significantly. Even if its use, alone or combined with insecticides, resulted in a contraction of vegetation (height), there was no significant effect on the number of bunches and of flower/ bunch and, consequently, on marketable production. Highly UVRM and Actigard were effective in reducing the primary spread of TYLCSV in greenhouse hydroponic tomatoes. Comparative analysis of their effects at different periods post-treatment suggests that multiple applications of Actigard may be necessary to reduce progress of the disease. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
