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Research Article
A Comparative Analysis of Tebuconazole Mediated Phytotoxicity to Legumes

Munees Ahemad

Journal of Environmental Science and Technology, 2011, 4(6), 630-637.

Abstract

In agricultural operations, fungicides are used to protect the crop plants from fungal pathogens. An indiscriminate and injudicious application of fungicides leads to their accumulation in upper soil layers of agricultural fields and exerts damaging impact on soil fertility as well as the crop productivity. The present study was therefore, navigated to assess the effect of triazole fungicide tebuconazole concurrently on common food legumes (chickpea, pea, lentil and greengram). The recommended field rate of the technical grade (active ingredient 100% w/w) tebuconazole was used in soils. Root and shoot biomass, chlorophyll content, nodule number, nodule biomass, leghaemoglobin content, seed protein and seed yields of each legume were measured at an appropriate time following different methods. The recommended field rate of tebuconazole showed a varying degree of phytotoxicity to the tested legumes. Tebuconazole significantly (p≤0.05) decreased shoot growth, leghaemoglobin, chlorophyll, shoot N, shoot P and seed protein in chickpea to the highest level. Generally, tebuconazole showed the most adverse effect on the growth parameters of chickpea and affected the least those of greengram. These findings demonstrated that an outcome of the effects of a specific fungicide on a specific crop plant species can not be generalized. The degree of toxicity of any fungicides and the type of plant organs affected may differ from one plant species to another.

ASCI-ID: 40-136

Cited References Fulltext

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