Informatics Publishing Limited

Satyendra K. Srivastava , Neeta Verma , C. M. Mishra , P. Dubey , B. S. Burfal

Abstract

The seed samples of D. sissoo were collected from 58 CPTs representing 7 seed sources of U.P. These samples were studied to evaluate different parameters viz. length, breadth, thickness, shape index (l/b ratio), seed weight, viability and germination percentage. Significant variation was observed between seed sources and studied parameters. On the basis of over all performance, the seed sources can be grouped in descending order as Mathura > Etawah > Kanpur > Ramnaghar > Lucknow > Haldwani > Mau. The performance of some CPTswas found poor with low values of viability and germination. Hence, these ePTs must be avoided for future collections. However, seeds from better CPTs could he used for further genetic improvement programmes.

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S. L. Singh , A. C. Banerjee , N. K. Shukla , B. S. Burfal , C. M. Mishra , P. Dubey

Abstract

The occurrence of multiple seedlings were observed in Neem (Azadirachta indica) during the germination studies in different Seed Sources of seeds. In the case of Neem the emergence of multiple seedlings is not due to polyembryony but due to sowing of seeds along with the endocarp of fruit not kernel. Each endocarp encloses 1-4 seeds in it. However, in the present study it differs in different Seed Sources.

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C. M. Mishra , P. Dubey , A. Kumar

Abstract

Under the present investigation suitable silvipasture model has been developed for large scale planting of fodder tree-grass combination in saline-alkali soils of U.P. Three tree species viz. Leucaena leucocephala, Albizia lebbek and Cassia siamea along with forage grasses like Brachiaria mutica, Panicum maximum and Chloris gayana were planted in spacement of 4.0m × 2.50m (Tree spp.) and 0.50m × 0.50m (Grass spp.), respectively. The results revealed considerable improvement of the entire system with huge amount of fodder biomass production.

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C. M. Mishra , R. J. Srivastava , S. L. Singh

Abstract

The present study deals with the accumulation pattern of biomass (dry matter) by Leucoma leueocephala var. K-8, under different planting space at Kanpur. It is obvious by the present investigation that biomass accumulation pattern differs in plant part as well as in different spacing with similar deviations in average height and diameter However, the values were found maximum in the spacement of 1.25 ×l 25 m² out of 4 different spacing. Taken for study. The mean annual increment (MAI) was also found maximum i.e. 5307 mt/ha/yr in the same spacing. Hence, along road side the planting distance of 1.25 × 1.25m has been suggested for maximum yield.

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D. S. N. Raju ¹, B. C. Jaiprakash ¹, Arun Kumar ¹, R. K. Saxena ¹, Alok Dave ¹, T. K. Chatterjee ¹, C. M. Mishra ¹

Affiliations
1 Geological Laboratories, KDM Institute of Petroleum Exploration, ONGC, Kaulagarh Road, Dehra Dun - 248195, IN

Abstract

The latest Paleontological data suggest that the duration of Deccan trap eruption in Krishna-Godavari basin varies from place to place and could be anywhere between <0.5 Ma and 6 Maacross KTB. Three groups of fossils viz., Planktic foraminifera, Nannoplanktics and Dinoflagellate cysts suggest that the initiation of volcanism was during latest Maastrichtian within the upper part of Abathomphalus mayaroensis Zone, Micula murus Zone and Triblastula utinensis Zone between 67 and 66.5 Ma. There are conflicting evidences in dating the upper age limit of the volcanics probably due to diverse methods employed in calibration of forarniniferal and nannoplanktic scales or selective retrieval of very small sized planktics of zones P0 and P1 in well cuttings.

Keywords

Micropalaeotogy, Deccan Volcanism, Age, Krishna-Godawari Basin.

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