Nonsystemic fungicides

Mepanipyrim is a nonsystemic fungicide to control gray mould on vines, tomatoes, etc., and scabs on pome fruits. 

Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and fumes Uses Insect chemosterilant nonsystemic fungicide... 

Properties Colorless cryst. mod. sol. in org. soivs. m.w. 328.87 m.p. 129.5 C Toxicoiogy LD50 (oral, rat) > 5000 mg/kg, (dermal, rat) > 2000 mg/kg Uses Nonsystemic fungicide used against Rhizoctonia diseases in potatoes, rice, ornamentals... 

Alkylenebis(dithiocarbamates) compounds, known also as ethylenebisdithiocarba-mates (EBDCs), are nonsystemic, low-toxicity pesticides with strong and broad fungicide activity on plant diseases. Developed by Rohm and Haas and E. I. du Pont de Nemours, they are used to protect vegetables and fruit crops. 

Initial attempts by Baker et al. [ 160] to determine the nonsystemic triphenyl tin-based fungicide fentin by HPLC were unsuccessful due to a lack of sensitivity and interference by coextractives. They therefore decided to investigate the applicability of spectrofluorimetry to this determination. Different extraction procedures are described for vegetables and cocoa products. For potatoes, for example, the grated potato is dried with anhydrous sodium sulfate and then Soxhlet-extracted with dichloromethane. 

The nonsystemic pyrrole fungicides fenpiclonil (76 1988, Beret , Syngenta) [163] (R = Cl) and its difiuoromethylenedioxy analogue fludioxonil (77 1993,... 

Uses Nonsystemic, foliar fungicide used in potatoes, tomatoes, wheat, barley and ornamentals. 

As residues of the nonsystemic DTC fungicides remain on plant surfaces and comminution of samples will degrade DTCs, surface extraction of whole samples is performed. The aqueous extraction buffer consists of sodium hydrogen carbonate (10 mM) and DL-penicillamine (10 mM), adjusted to pH 12 by sodium hydroxide solution (10%).Therefore, firm plant samples like apples, tomatoes, or grapes are weighed as whole... 

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