Research article


Mohini R Natha, Dr. S. R. Vyas, Dr. S. B. Gondaliya

Online First: March 30, 2023

The Department of Biochemistry, College of Basic Science and Humanities, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, carried out the current study, "Phytoremidation of Fipronil and Matalaxyl by Vigna radiata and Brassica juncea." Currently, weeds, pests, and diseases cause roughly 40.00 percent of the world's potential agricultural yield to be lost each year; however, this loss would easily treble without crop protection from pesticides. Growing food crops is not a simple undertaking. There are around 30,000 kinds of weeds, 3,000 species of worms, and 10,000 species of insects that feed on plants. From 1998 to 2005, the pesticide fipronil was frequently utilised in the US; this was followed by a sharp fall. In order to control superfluous arthropods in different types of food, horticulture, and turf plants, it was utilised in seed coatings and granular soil treatment. A fungicide called metalaxyl is often used on plant diseases such mildews, pythium, and late blight. Uridine inhibition in particular RNA polymerase inhibition are credited with the pesticide's efficiency. Metalaxyl is classified as having EPA toxicity class III. The stability of metalaxyl under hydrolysis and its resistance to destabilisation by light and water have both been proven by recent investigations. However, one of metalaxyl's characteristics is its capacity to permeate deep soil, which raises the possibility of groundwater contamination. Therefore, excessive usage of metalaxyl in the same location is to be avoided. Only the R-isomer of metalaxyl has been shown to be the chemically active substance. The current investigations were conducted to remediate by Vigna radiata and Brassica juncea with the aforementioned situation in mind. Fipronil and Metalaxyl were used in the experiment in five different combinations (T1: Untreated control, T2: Fipronil 5 percent SC @ 200 g a.i. ha-1, T3: Fipronil 5 percent SC @ 600 g a.i. ha-1, T4: Metalaxyl 35 percent WS @ 200 g a.i. ha-1, and T5: Metalaxyl 35 percent WS @ 600 g The research was divided into two sessions; the first session evaluated the persistence of Fipronil and Metalaxyl in sandy loam soil prior to the phytoremediation inquiry, and the second session assessed the effectiveness of Vigna radiata and Brassica juncea for phytoremediation. The combined findings showed that Vigna radiata dramatically lowered the half-lives of Fipronil and Metalaxyl from 84 days to 45 days and from 67 days to 36 days, respectively. It's interesting to note that Brassica juncea remediates Fipronil and Metalaxyl more effectively thanks to their much-shortened half-lives of 3.7 days and 4.8 days, respectively. While the residues of Fipronil and Metalaxyl from the whole plant of Brassica juncea at harvest were below the determination limit, bioaccumulation of the chemicals was seen in the Vigna radiata at the 30th day after harvest. Brassica juncea is the perfect crop for phytoremediation because of this.


phytoremediation, Fipronil, Matalaxyl, Brassica juncea, Vigna radiata