Browsing by Author "Richa Raghuvanshi"

Now showing 1 - 2 of 2

Application of selected nutrient amendments to regulate soil properties for reducing arsenic accumulation in rice
(Taylor and Francis Ltd., 2023) Suman B. Singh; Mariya Naseem; Richa Raghuvanshi; Pankaj Kumar Srivastava
Arsenic (As) contamination in rice and the deleterious effects of its consumption on human health is a major concern. To decrease the bioavailable fractions of arsenic in soil for achieving subsequently reduced accumulation of arsenic in rice grains, a pot experiment was conducted using arsenic-laden soil. The effects of different nutrient amendments viz., ZnSO4, FeSO4, Ca2SiO4, Murate of Potash (MOP), Di-Ammonium Phosphate (DAP) independently and in combination (as a mix) at low, mid, and high doses were evaluated concerning arsenic accumulation in rice variety Muktoshree IET-21845. Changes in bioavailable fractions of soil arsenic were measured by the sequential extraction procedure. The total arsenic in the control treatment without any amendment was 19 mg kg−1. The maximum concentration of total arsenic in grains in the control treatment without any amendment was 1.02 mg kg−1. It was found that the combined (mid-dose of the mix) amendments enhanced rice growth by 55%, and decreased arsenic accumulation in the grain by 89%, which was the minimum total arsenic reached with the suitable amendments. The bioavailable fractions of soil arsenic were decreased to 79% and 88% in the case of mid-dose application of the DAP and the mix (combined amendments) treatments to the soil, respectively. These nutrient amendments in defined doses may be highly effective in reducing arsenic toxicity to rice cropping in the arsenic-contaminated soils. © 2022 Taylor & Francis.
Comparative Study of Moisture Dynamics in the Soils of Two Different Sugarcane-Based Cropping System (Viz: Intercropping and Sole) in Western Indo-Gangetic Plains of Uttar Pradesh
(Springer, 2025) Shivam C. Singh; Richa Raghuvanshi; Satendra Kumar; Debashis Dutta; Jagannath Pathak; U. P. Shahi; B. P. Dhyani; Mahendra Pratap Singh
Soil water plays important role in soil–plant consortium in which plant absorbs from soil. Thus, soil acts as reservoir of water towards its proper growth. Sugarcane among the cash crop needs large quantity of water during its life-cycle. Hence, dynamics of water in soil were studied from two major sugarcane-based cropping pattern (intercropping and sole) at three depths at 15 cm interval (0–45 cm). The result invoked that soils were sandy-loam to sandy-clay-loam textured under different cropping system and depth. The increase in the clay content down the depth elevates the holding capacity of water via clogging the pore spaces under all the cropping system and depth. Therefore, the difference in behaviour is mainly attributed to the difference in cropping system only. Intercropping system showed high bulk density, low organic carbon, high clay:carbon ratio, high porosity and high E.C. compared to the sole sugarcane-based cropping system. The moisture dynamics under all cropping system behaved quadratically and attains minimum value. The other moisture parameter derived from the moisture loss curve indicates that intercropping has high moisture loss, high instaneous loss and low average moisture content. © The Author(s), under exclusive licence to The National Academy of Sciences, India 2025.