Increasing yield of crops e.g. beans - using new or known malonic acid derivs.

摘要

Increasing crop yield comprises applying a cpd. of formula (I), R1 and R2 are independently a substd. or unsubstd., carbocyclic or heterocyclic ring system, Y1 and Y2 are independently a substd. or unsubstd. heteroatom, Y3 and Y3 are independently hydrogen, or a substd. or unsubstd. heteroatom carbon atom, or a substd. or unsubstd. branched or straight chain contg. two or more carbon atoms or heteroatoms or (e.g.) halogen, alkylcarbonyl, formyl, alkylcarbonylalkyl, alkoxycarbonylalkyl, etc. Y5 and Y6 are independently oxygen or sulphur.