Response of Summer Groundnut (Arachis hypogaea L.) to Varying Levels of Sulphur and it’s sources
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Date
2018-08
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University of Agricultural Sciences, Dharwad
Abstract
A field experiment was carried out at Agriculture Research Station Farm, Bagalkot during summer 2017. The experiment comprising of 11 treatments with three levels of sulphur (10, 20 and 30 kg ha-1), three sources of sulphur (gypsum, elemental sulphur and sulphur bentonite), RPP and control. The experiment was laid out in a randomized block design with three replications.
The results of the experiment showed that application of sulphur at 30 kg ha-1 through gypsum significantly increased the growth parameters of groundnut viz., plant height (31.50 cm) number of branches (8.90) total dry matter production (51.58 g per plant), number of nodules per plant (54.3) and relative chlorophyll content (46.12) as compared to other treatments.
Application of sulphur at 30 kg ha-1 through gypsum significantly increased the yield attributes of groundnut namely number of pods per plant (18.3), 100 pod weight (64.2 g) and 100 kernel weight (35.7g) over other treatments. Significantly higher pod yield (2278 kg ha-1), haulm yield (3,625 kg ha-1) protein content (22.03 %) and oil content (46.92 %) was recorded in treatment receiving 30 kg sulphur ha-1 through gypsum as compare to other treatments.
The total uptake of nitrogen (142.15 kg ha-1), P2O5 (23.34 kg ha-1), K2O (73.04 kg ha-1) and sulphur (33.11 kg ha-1) was significantly higher in treatment receiving 30 kg sulphur ha-1 through gypsum, while lowest uptake of N,P2O5,K2O and S was observed in control. The significantly highest net return (Rs 76,185 ha-1) and B:C (3.05) was observed in treatment with application of sulphur at 30 kg ha-1 through gypsum as compare to other treatments.
Application of sulphur through gypsum at 30 kg ha-1 proved significantly superior over other treatments with respect to growth, yield attributes and pod yield of groundnut.