Effect of sulphur and iron on nutrient content, uptake and quality of groundnut (Arachis hypogaea L.)

Abstract

An experiment was conducted at Agronomy farm, S.K.N. College of Agriculture, Jobner during kharif season 2017. The treatments comprising four Sulphur levels (control, 20 kg S/ha, 40 kg S/ha and 60 kg S/ha) and four foliar spray of iron (control, foliar spray of 0.5% FeSO4 at flowering, peg formation and flowering + peg formation) assigned to main and subplots of Randomized Block Design, respectively were replicated thrice. Groundnut variety RG-425(Raj Durga) was used as a test crop. The highest concentration of N, P, K, S and Fe in kernel and haulm and protein and oil content were obtained with 40 kg S/ha, however it was remained at par with 60 kg S/ha. The total uptake of N, P, K, S and Fe as well as oil yield were also obtained with application of 60 kg S/ha. The content of N, P, K, S and Fe in kernel and haulm, protein and oil content significantly increased with foliar application of 0.5% FeSO4 at peg formation stage, which was remained at par with 0.5% at flowering + peg formation stage. The total uptake of N, P, K, S and Fe as well as oil yield were also obtained with foliar spray of 0.5% FeSO4 at flowering + peg formation stage than rest of treatments.