Selenium status in soils of northern districts of India

Selenium status in food grains of northern districts of India

“…On the other hand districts such as Mohindergarh, Hisar and Jind had comparatively higher levels of the selenium in food grains as their soil had high selenium levels (Yadav et al, 2005). Similar results were shown for the selenium levels in the districts of Rajasthan state adjacent to the from the top soils toward the deeper soils and larger amount of selenium was found in the agricultural lands of Rajasthan and its adjacent areas, thereby increasing the selenium levels in the food grains grown on these agricultural lands.…”

“…Food grains such as wheat, gram, mustard seeds, bajra (pearl millet) in the form of raw materials were collected from the agricultural fields of the districts shown in the map (Map 1) from where the soil samples were also collected and analysed (Yadav et al, 2005). The raw grains were washed thoroughly with deionised water and dried in open air under sunlight for several days, finally drying them in an oven at 50 1C.…”

“…For these districts, the lower selenium contents were caused by flooding. Soluble selenium (mostly in the selenate form) is likely to have been lost by leaching (Yadav et al, 2005).…”

“…In the present study, we planned to cover the districts of the Haryana, Punjab, Himachal Pradesh and Rajasthan states of India shown in Map 1. However, in our previous studies, we have analysed the selenium contents in soils by using Atomic Absorption Spectrophotometer with vapour generation accessory (Hydride Generator) [HG-AAS] and Inductively Coupled PlasmaOptical Emission Spectroscopy (ICP-OES) (Yadav et al, 2005).…”

Selenium: Its Role in Livestock Health and Productivity

“…Arid environments with alkaline soils, in times of drought or where less irrigation water is predispose to high soil selenium levels and a greater uptake of Se by plants. Such conditions exist in Rajasthan and southern parts of the Haryana states of India where above normal soil selenium levels (Yadav et al, 2005). In parts of China the Se content of early Cambrian aged rock range from 10-40ppm (mg/kg) (Kunli et al, 2004).…”