ALLEVIATION OF PHYTOTOXICITY OF FENSULFOTHION (DASANIT) ON PEA.

Abstract

The germination and early growth of pea particularly, secondary root development, were highly inhibited by fensulfothion (Dasanit), an organophosphorous pesticide. Various light treatments like red, lusted and white light (18 hr light and 6 hr dark cycle) as well as different phytohormones and acetylcholine treatment had no influence on the seed germination either independently or in combination with each other, nor could these treatments reverse the fensulfoth ion induced toxicity. On the other land, the development of shoot, tap root and secondary roots were variously affected by these factors and there vas significint interaction among the different treatments. The most severe effect of the Nsticide wason the development of secondary roots and often simultaneous application of phytohormones enhanced the toxic effect of fensulfothion. The statistical analysis of the data showed that the interaction among the light, the hormones and pesticide were found to be highly significant pirticilarly, in acetylcholine treatment, where maximum interactions among light, acetylcholine and, fertsInfothion were noticed with respect to growth and development of pea seedlings.