*Contribution from Quality Testing Laboratory, Haryana Agricultural University, Hissar.
Studies have been carried out to investigate the effect of varying concentrations of Lasso on chemical composition of groundnut variety ‘C-501’. Oil content, reducing sugars and total sugars increased initially with increasing doses of Lasso whereas higher doses suppressed the same. Crude protein content decreased consistently with increasing concentrations of the weedicide. Varying doses of Lasso did not have any appreciable effect on iodine value.