CANGĠ, Rüstem Gaziosmanpaşa Üniversitesi - Ziraat Fakültesi - Bahçe Bitkileri Bölümü, Turkey , YANAR, Yusuf Gaziosmanpaşa Üniversitesi - Ziraat Fakültesi - Bitki Koruma Bölümü, Turkey , YAĞCI, Adem Gaziosmanpaşa Üniversitesi - Ziraat Fakültesi - Bahçe Bitkileri Bölümü, Turkey , TOPÇU, Neval Gaziosmanpaşa Üniversitesi - Ziraat Fakültesi - Bahçe Bitkileri Bölümü, Turkey , SUCU, Seda Gaziosmanpaşa Üniversitesi - Ziraat Fakültesi - Bahçe Bitkileri Bölümü, Turkey , DÜLGEROĞLU, Yağmur Erzincan Gıda Tarım ve Hayvancılık Müdürlüğü, Turkey

The Effect of Picking Period and Brining Applications on Fungicide Residue Levels in Brined Vine Leaves Production

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Especially at the time then the leaves are harvested contact and systemic fungicides are applied frequently to protect the grapevine agaist downy mildew and powdery mildew. Intensive pesticide use in vineyard resulted in residue problem on brined vine leaves that are used as food. In this study two fungucides applications were applied against powdery mildew and downy mildew to the Narince grape cultivars vine leaves. Vine leaves were harvested at end of the half-lifes of the pesticides. A part of harvested leaves were stored fresh and the other part of vine leaves use two different brine applications. Then residue analyses made separately fresh, cold and hot water brine vine leaves and determined residues against to used fungucides. To make brining leaves, leaf samples were put in the water containing salt (NaCl) of 8 % and lactic acid 0,25 % and they were subjected to fermentation for 3 months. The 3 systemic fungicides (triadimenol, carbendazim, metalaxyl) residues detected on fresh leaves in applications were over MRL (maximum residue level). Folpet and mancozep residue could not be dedected in fresh and brined vine leaves. Although brining application were generally decreased fungucides residue levels, carbendiazm residue was also over MRL in the brining applications. Hot brining method according to cold brining method has giving much better results and residues in leaves decreased according to fresh leaves between %21 to %91. Fungucides used in vineyard, recommended for grape elapse between applications and harvested time, is not applicable to vine leaves. As a result, systemic fungicide should not be used in vineyards produced for brine vine leaves and recommended if producers use contact fungucides must be careful.

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Brined vine leaf , fungucide , carbendazim , folpet , residue

Journal Of Agricultural Faculty Of Gaziosmanpasa University

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