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Gujarat) during summer season of the year 2017 to study the role of potassium and sulphur on yield attributes, yield and quality of summer groundnut (Arachis hypogaea L.) under middle Gujarat conditions. The experimental soil was loamy sand in texture having pH of 7.80. The experiment included four levels of potassium viz. 0, 25, 50 and 75 kg K 2 O ha -1 and three levels of sulphur viz. 0, 20 and 40 kg S ha -1 . The experiment was laid out in a Randomized Block Design (Factorial) with four replications. Potassium showed significant effect on yield and yield attributes of groundnut. Application of potassium @ 75 kg K 2 O ha -1 produced significantly highest dry matter content at 45 DAS, no. of branches plant -1 , no. of pod plant -1 , shelling %, seed index, pod yield, haulm yield and protein content. Sulphur fertilizer also gave significant effect on yield and yield attributes of groundnut. Application of sulphur @ 40 kg S ha -1 produced the highest dry matter content at 45 DAS, no. of branches plant -1 , no. of pod plant -1 , shelling %, seed index, pod yield, haulm yield, oil content and protein content. Potassium in combination with sulphur showed significant effect on yield and yield attributes of groundnut. Combined application of potassium @ 75 kg ha -1 and sulphur @ 40 kg ha -1 resulted significantly the highest no. of branches plant -1 , no. of pod plant -1 , pod yield, haulm yield and shelling % of groundnut. On the other hand, in all the cases the lower response was found from the control treatment.

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