Vol. 9, Special Issue 1, Part I (2025)

A field experiment was conducted to study the influence of different arbuscular mycorrhizal species on groundnut under water stress during 2019-20 and 2020-21. Lower soil moisture content was observed in the treatments that received the soil application of Glomus mosseae and Gigaspora sps. compared to control which indicates the enhanced the water uptake of plants by the extensive hyphal network of these mycorrhiza, whereas higher soil water content was recorded in plots without mycorrhizal application, Acaulospora sps. and Glomus aggregatum. Under water stress conditions, soil application of Glomus mosseae enhanced the relative water content during both the years of experiment. It was observed that the uptake of nitrogen and phosphorus was reduced by 41.0 and 29.9 per cent during 2019-20, and 46.2 and 35.9 per cent during 2020-21 under water stress compared to control without stress at 60 DAS. Among the sub treatments, groundnut plants inoculated with Glomus mosseae increased the nitrogen uptake by 59.9 and 71.4 per cent, phosphorus uptake by 41.3 and 70.8 per cent and potassium uptake by 40.6 and 19.1 per cent during 2019-20 and 2020-21, respectively. Nitrogen uptake of groundnut plants inoculated with Glomus mosseae (68.3 and 94.4%) and Gigaspora sps. (47.2 and 82.2%) was significantly higher than control under stress. Similarly, phosphorus uptake was significantly increased with Glomus mosseae (33.9 and 57.1%) and Gigaspora sps. (26.8 and 55.5%) under water stress.