Novel nitrogenous heterocyclic compounds, compositions containing them, their preparation and application for reducing plant moisture loss and increasing crop yields.

摘要

Method comprises applying to the plant surface an amt. sufficient to reduce moisture loss from the plant surface without inhibiting plant photosynthetic electron transport, of N-heterocyclic cpd. of formula R1-X-R2 (I) Also claimed are methods of increasing crop yields and reducing moisture loss from soil by applying (I) In (I), R1=(i) opt. substd. carbocyclic or heterocyclic ring system selected from mono-, bi- and polycyclic (non)aromatic ring systems, and opt. unsatd. bridged ring systems; or (ii) a substd. heteroatom or substd. C atom, or an opt. substd. branched or straight chain contg. two or more C atoms or heteroatoms in any combination; X=covalent single or double bond, an opt. substd. heteroatom or substd. carbon atom, or an opt. substd. branched or straight chain contg. two or more C atoms or heteroatoms in any combination; R2=opt. substd. heterocyclic ring system having at least one N atom, which is selected from nomo-, bi- and (non)aromatic ring systems and opt. unsatd. bridged ring systems; a very large number of specific substits. for R1, X and R2 is given. (I) include 33 classes of new cpds. -