3'alkoxy spiro cyclopentyl substituted tetramic acid and tetronic acid

The present invention relates to novel compounds of formula (I) (W, X, Y, Z , A, B, D, Q 1, Q 2 and G have the meanings indicated in the specification.), A plurality of methods and intermediate products for this preparation, pesticides and / or their use as herbicides and / or fungicides, and 3'-alkoxy-spiro cyclopentyl of formulas (I) - select comprising compounds to improve the substituted tetramic acid and tetronic acid and at least one tolerance of the plants on herbicides. Also disclosed is, by addition of ammonium salts and / or phosphonium salts or by adding ammonium salts or phosphonium salts and penetration enhancers, formula (I) 3'alkoxy spiro cyclopentyl - substituted tetramine acid and method of increasing the effect of the crop protection products containing drug class of tetronic acid, the corresponding drug, these production methods, as well as their use in crop protection.