Effect of Different Herbicides and Allelochemicals on Weed Density and Soil Microbial Population under Direct Seeded Rice (Oryza sativa L.)

The use of herbicides for weed control often catches the eye environmentalists as it harms soil microflora leading to deteriorated health. So, efforts are being made in order that can cause no or very less harm microflora. In this context, an experiment is planned know potential effect different and allelochemicals on density microbial population under direct seeded rice where herbicide management widely adopted. conducted during Rabi, 2020 summer, 2021 red sandy loams Gandhi Krishi Vignana Kendra (GKVK), University Agricultural Sciences, Bengaluru by using randomized complete block design with three replications. Out treatments tried out, T4 i.e., bispyribac sodium 10 SC 40 g a.i. ha-1 post emergence has reported superior which evident lower (43.3 no. m-2) dry weight (49.2 followed T1 bensulfuron methyl + pretilachlor 6.6 GR 660 pre (46.0 m-2 51.4 m-2, respectively). When considered all allelochemical recorded higher but these was not satisfactory. Among herbicides, bacteria, actinomycetes fungi (23.52 x 105, 15.30 104 12.45 103 CFU g-1 soil, respectively) over (21.83 13.33 10.91 Hence, taking both into consideration treatment concluded be better herbicide.