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Abstract:The present investigation was undertaken to study the effect of different concentrations of Indole 3-butyric acid (0, 2000, 4000, 8000 and 10000 ppm), different types of rooting media (i.e. sphagnum moss, coco peat, vermicompost, sphagnum moss + coco peat and sphagnum moss + coco peat + vermicompost) and the interaction of these in different combinations on rooting and growth characteristic of guava, cv. L-49. The results revealed that the exogenous application of Indole 3-butyric acid (IBA) 8000 ppm with media combination of sphagnum moss + coco peat + vermicompost (I 3 M 5 ) significantly increased the root characters i.e. success percent of air-layers (83.3 %), callus formation (23.7), number of primary roots (24.21) and secondary roots (32.57); and growth characters i.e. number of leaves (48.17), branches (7.92) and sprouts (8.48) and survival percentages (83.18) over the other treatments and control. Among the rooting media, the combination of sphagnum moss + coco peat + vermicompost (M 5 ) produced the highest rooting percentage (71.27), root characters and growth characters during months of July and August.

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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.