Effect of nitrogen and sulphur on yield, quality, nutrient uptake and post harvest nutrient status of groundnut Arachis hypogaea L.
1K Balagangathar, *C. Kalaiyarasan1, S. Kandasamy1, S. Madhavan2, S. Jawahar1, K. Suseendran1 and S. Ramesh1
1Department of Agronomy, 2Department of Horticulture, Faculty of Agriculture, Annamalai University, Annamalai Nagar - 608 002 India *Corresponding author E-mail: kalai77.agri@gmail.com
ABSTRACT
Field investigations were carried out during 2022 and 2023 Kharif season at Experimental farm,Annamalai University to investigate the effect of nitrogen N and sulphur S on yield, quality, nutrient uptake and post-harvest nutrient status of groundnut. The experiment was laid out in factorial randomized block design FRBD with 4 nitrogen levels 0, 17, 25 and 34 kg per ha and 4 sulphur levels 0, 20, 40 and 60 kg per ha which are replicated thrice. The results revealed that the different nitrogen and sulphur levels notably influenced the yield parameters, quality characters, uptake and post harvest soil available nutrients of groundnut. Among the various nitrogen levels tested, 34 kg N per ha N4 registered maximum pod yield 2579 kg per ha, kernel yield 1835 kg per ha and haulm yield 3761kg per ha, oil content 49.10 per cent, oil yield 902.66 kg per ha and crude protein content 26.31 per cent. Regarding sulphur levels, pod yield 2573 kg per ha, kernel yield 1837 kg per ha and haulm yield 3727 kg per ha, oil content 49.12 per cent, oil yield 906.31 kg per ha and crude protein content 26.33 per cent by groundnut was influenced by sulphur application at 60 kg per ha S4. With respect to various interaction effects, application of 34 kg N per ha along with 60 kg S per ha N4S4 has a significant effect on the yield, quality characters and increased nutrient uptake which ultimately results in maximum yield of groundnut.