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The present study was planned to evaluate the performance of groundnut (Arachis hypogaea L.) under varying levels of sulphur and its sources under Semi-Arid condition of Rajasthan. Application of 60 kg S/ha resulted 8.8, 23.8 and 59.6% more pod/plant than 45, 30 and 15 kg S/ha, respectively. Gypsum as a source of S recorded 15.4 and 50.4% higher pods/plant over SSP and elemental sulphur, respectively. However, number of kernels/pod increased significantly upto 45 kg/ha only. Gypsum and SSP improved the kernels/pod by 14.2 and 11.2% over elemental sulphur, respectively. Application of 60 kg S/ha resulted in 140, 345 and 744 kg/ha and 127, 319 and 616 kg/ha higher pod and kernel yield over 45, 30 and 15 kg/ha, respectively. Sulphur application through gypsum recorded the highest pod yield (1872 kg/ha) of groundnut that was 13.1 and 32.0 percent more than obtained under SSP and elemental sulphur treatment, respectively. Application of sulphur at 75 kg S/ha was recorded highest shelling% (72.13%) which were 7.0 and 10.9 per cent higher over 30 and 15 kg S/ha. The application of S at 45 kg/ha exhibited 7.6 and 17.0% higher protein content over 30 and 15 kg S/ha, respectively. Among sources, the highest protein content (23.75%), oil content (44.49%) and oil yield (597.76 kg/ha) was obtained with gypsum. Application of 60 kg S/ha increased oil yield by magnitude of 70.3, 175.1 and 316.9 kg/ha over 45, 30 and 15 kg S/ha, respectively. Sulphur application at the rate of 60 kg/ha increased the margin to the tune of ₹ 6343, 15867, 34062 /ha over 45, 30 and 15 kg S/ha, respectively. Likewise, graded increment in levels of sulphur resulted in significantly higher BCR upto 60 kg/ha over lower levels. The maximum net returns ₹(55358/ha) and BCR (1.68) were obtained with gypsum. [ABSTRACT FROM AUTHOR]

A field experiment was conducted at Agronomy research farm, S.K.N. College of Agriculture, Jobner during kharif, 2015 in order to evaluate the performance of groundnut (Arachis hypogaea L.) under varying levels of sulphur and its sources. Results of experiment revealed that CGR of crop during 0 - 35 DAS registered significant increase upto application of sulphur at 45 kg/ha. However, at later stages of growth the significant increase was noted upto 60 kg S/ha only. Application of sulphur at 60 kg/ha recorded a significant increase of 6.1 per cent in RGR over 15 kg/ha during 70 DAS - at harvest stage. Likewise, application of 60 kg S/ha also significantly enhanced the number of total and effective nodules as well as fresh and dry weight of nodules/plant and produced significantly higher pod and biological yields of groundnut (1832 and 5361 kg/ha) than 45, 30 and 15 kg/ha. Application of sulphur through gypsum recorded significant increase in plant height and dry matter accumulation/m row length at all the stages of crop over SSP and elemental sulphur treatments. The maximum CGR at all the stages of crop was recorded when sulphur was applied through gypsum. Sulphur application through SSP registered 13.9, 9.8 and 21.4 per cent increase in CGR over elemental sulphur at these stages, respectively. On the other hand, SSP and gypsum increased the RGR by 7.2 and 6.3 per cent, respectively over elemental sulphur. Gypsum as a sources of sulphur fertilization recorded the highest number of 62.30 total and 55.00 effective nodules/plant and as well as fresh and dry weight of nodules (229.87 and 102.00 mg/plant) thereby increasing to the extent of 22.1, 27.6, 23.9 and 18.9 per cent over elemental sulphur. Sulphur application through gypsum produced 13.1 and 10.2 per cent higher pod and biological yield of groundnut over elemental sulphur. [ABSTRACT FROM AUTHOR]

A field experiment was conducted at S.K.N. College of Agriculture, Jobner in Jaipur district of Rajasthan during kharif 2009 on loamy sand soil under semi-arid conditions. The experiment consisting of four levels each of phosphorus (0, 15, 30 and 45 kg ha-1) and sulphur (0, 15, 30 and 45 kg ha-1) thereby making sixteen treatment combinations was laid out in randomized block design and replicated thrice. Sesame variety 'RT-127' was used as a test crop. Results showed that every increase in level of phosphorus upto 30 kg ha-1 brought about significantly higher seed (933 kg ha-1) and stalk yield (3385 kg ha-1) in comparison to lower levels and control. Nitrogen, phosphorus and sulphur concentration in seed and stalk and their uptake, protein and oil content in seed as well as oil yield were also significantly improved under this level of phosphorus. However, it was found at par with 45 kg P ha-1. Results further indicated that application of sulphur at 30 kg ha-1, remaining at par with 45 kg ha-1 produced 9.8 and 32.5 per cent higher seed and stalk yield of sesame than 15 kg ha-1 and control, respectively. Nutrient concentration in seed and stalk and their uptake as well as protein and oil content in seed was also significantly higher at these levels of sulphur than lower levels. Sulphur fertilization at 30 and 45 kg ha-1 also recorded oil yields of 453.1 and 469.0 kg ha-1 that was 55.3 and 60.8 per cent higher than control, respectively. The economic optimum dose of phosphorus and sulphur as derived from response function was found to be 42.15 and 42.75 kg ha-1, respectively. [ABSTRACT FROM AUTHOR]