Department of Soils, Haryana Agricultural University, Hissar, Haryana
An experiment on the effect of sulphur and selenium on nitrogen, sulphur, selenium and phosphorus concentration in raya was conducted at H.A.U., Hissar, in screen-house with three doses of sulphur (0, 30 and 60 ppm) and four doses of selenium (0,2.5,5 and 10 ppm), using three soils, viz, sandy, sandy loam and sandy loam sodic. High selenium in soil decreased plant nitrogen and sulphur in 50-day old and mature plants. Thirty ppm of added sulphur counteracted the harmful effect of 5 ppm selenium while 60 ppm of it counteracted 10 ppm Se. There was a decrease in concentration of selenium with the application of sulphur. Nitrogen concentration increased significantly by application of 30 and 60 ppm sulphur whereas phosphorus concentration increased only with 30 ppm sulphur. The phosphorus concentration decreased with increasing selenium application when sulphur was not added, but in the presence of added sulphur, it increased with increasing selenium application. The effect of selenium were more pronounced in sandy soil, less so in sodic and least in sandy loam soil. The highest absorption of selenium was observed in sodic soil.
Sulphur, selenium, concentration, antagonistic relationship
