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Rao, B. N.
- Geophysical Signatures of a Fracture Controlled U-Mineralisation: A Case Study from Mulapalle Area, Cuddapah District, Andhra Pradesh
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Authors
Affiliations
1 Department of Atomic Energy, Hyderabad - 500 016, IN
2 Department of Atomic Energy, Nagpur - 440 001, IN
1 Department of Atomic Energy, Hyderabad - 500 016, IN
2 Department of Atomic Energy, Nagpur - 440 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 55, No 4 (2000), Pagination: 421-429Abstract
Geophysical methods have been extensively used for delineation of structural features such as fractures and shear zones which often control and host economic mineralisation. Numerous fractures hosting uranium mineralisation and confined to younger intrusives and leucogranites occur within basement gneissic complex on the southwestern margin of the Mesoproterozoic Cuddapah basin. The geophysical signatures of one such mineralised fractore zone near Mulapalle are discussed. Mineralised fractures are mostly confined to a zone of cataclastic rocks characterised by widely varying magnetic character with respect to the surroundings. A strong redox barrier associated with the mineralisation is revealed by seIf-potential data. The mineralised zone is also indicated by a higher order resistivity attributable to the enrichment of silica in the fracture zone.Keywords
Geophysics, Fracture, Redox Barrier, Uranium Mineralisation, Peninsular Gneiss, Cuddapah Basin, Andhra Pradesh.
- Influence of Different Methods and Levels of Irrigation on Vegetative Growth and Yield of Oil Palm (Elaeis guineensis Jacq.)
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Authors
Affiliations
1 Department of Horticulture, Dr. Y.S.R. Horticultural University, Venkataramannagudem, West Godavari (A.P.), IN
2 ICAR-Indian Institute of Oil Palm Research, Pedavegi, West Godavari (A.P.), IN
1 Department of Horticulture, Dr. Y.S.R. Horticultural University, Venkataramannagudem, West Godavari (A.P.), IN
2 ICAR-Indian Institute of Oil Palm Research, Pedavegi, West Godavari (A.P.), IN
Source
International Journal of Agricultural Sciences, Vol 15, No 1 (2019), Pagination: 84-90Abstract
A field experiment with two methods and three levels of irrigation using crop factor was carried out on eighteen years old oil palm plantation at ICAR-Indian Institute of Oil Palm Research, Pedavegi to find out their influence on vegetative growth and yield of fresh fruit bunches during the year 2016-2017. The data obtained have indicated non-significant differences for most of the parameters evaluated. However, application of irrigation water through drip method at crop factor 0.8 recorded highest number of leaves produced (25.83), highest number of female inflorescences (7.16), lowest number of male inflorescences (5.12) which contributed to increased production of number of fresh fruit bunches (7.16), total weight of FFBs (148.44 kg/palm/year) thereby FFB yield (21.23 t/ha). Further, the same treatment combination has increased percentage of fruits to the bunch (64.79%).Keywords
Crop Factor, Female Inflorescence, Fresh Fruit Bunches, Male Inflorescence, Oil Palm.References
- Basavaraju, T.B., Palanna, K.B., Lavanya, T.N., Prashanth, M. and Arulraj, S. (2011). Growth and yield performance of coconut hybrids in maidan tract of Karnataka. J. Plantation Crops, 39(1): 171-173.
- Blum, A. (2005). Drought resistance, water use efficiency and yield potential - are they compatible, dissonant or mutually exclusive. Australian J.Agric. Res., 56: 1159-1168.
- Chaves, M.M. and Oliveira, M.M. (2004). Mechanisms underlying plant resilience to water deficits: prospects for water saving agriculture. J. Exp. Bot., 55: 2365-2384.
- Ferwerda, J.D. (1977). Oil palm in ecophysiology of tropical crops. Academic Press, London, 351-388pp.
- Gajbhiye, R.C., Gawankar, M.S., Arulraj, S and Patil, S.L. (2011). Evaluation of drought tolerant oil palm genotypes for their performance in Konkan Region of Maharashtra. J. Plantation Crops, 39(1): 161-163.
- Gawankar, M.S., Devmore, J.P., Jamadagni, B.M., Sagvekar, V.V. and Hameedkhan, H. (2003). Effect of water stress on growth and yield of tenera oil palm. J. Appl. Hort., 5(1):39-40.
- Hartley, C.W.S. (1988). The oil palm, 3rd Ed. Harlow, England, Longman.
- Henson, I.E. and Harun, M.H. (2005).The influence of climatic conditions on gas and energy exchanges above a young oil palm stand in north Kedah, Malaysia. J. Oil Palm Res.,17:7391.
- Hsiao, T.C., Silk, W.K. and Jing, J. (1985). Leaf growth and water deficits. Biophysical effect. In: Control of leaf growth. Baker, N.R. W.J. Davies and C.K. Ong (Eds.) Cambridge University Press, Cambridge. pp. 239-266.
- Jones, L.H. (1997). The effect of leaf pruning and other stresses on sex determination in the oil palm and their representation by a computer simulation. J. Theoret. Biol., 187: 241-260.
- Kijne, J.W. (2006). Abiotic stress and water scarcity: Identifying and resolving conflicts from plant level to global level. Field Crops Res., 97: 3-18.
- Larsen, B.J. (1981). Drought resistance and water relations in conifers in relation to the nutrient. Pot Rev., 11, subj. 22, 28th Suite. pp. 1-5.
- Neumann, P.M. (2008). Cropping mechanisms for crop plants in drought prone environments. Ann. Bot., 101: 901-907.
- Panse, V.G. and Sukhtame, P.V. (1985). Statistical methods for agricultural workers. Indian Council of Agricultural Research, New Delhi, India.
- Passioura, J. (2007). The drought environment: physical, biological and agricultural perspectives. J. Exp. Bot., 58: 113117.
- Rao, B.N., Suresh, K., Behera, S.K., Ramachandrudu, K. and Manorama, K. (2016). Irrigation management in oil palm (Technical Bulletin). ICAR-IIOPR, Pedavegi, Andhra Pradesh.
- Rao, K.K. (2009). Effect of different methods of irrigation and nutrient requirement on yield of oil palm. Internat. J. Oil Palm Res., 6 (1):31-34.
- Reddy, A.R, Chaitanya, K.V. and Vivekanandan, M. (2004). Drought-induced responses of photosynthesis and antioxidant metabolism in higher plants. J. Plant Physiol., 161: 1189–1202.
- Sanjeevraddi, G., Patil, D.R., Maheshwarappa, H.P., Arulraj, S., Mastan Reddy, B.G. and Chandravathi, B. (2014). Evaluation of African oil palm germplasm for drought tolerance. J. Plantation Crops, 42 (2): 170-174.
- Sun, C., Cao, H., Shao, H., Lei, X. and Xiao, Y. (2011).Growth and physiological responses to water and nutrient stress in oil palm. African J. Biotechnol., 10 (51) : 10465-10471.
- Zhu, X.C., Sun, Z.M., Tao, Y.Q, Gao, W.H., Huang, Q.A., Cang, Z.W. and Zhou, X.W. (2008). Introduction of prior variety of Elaeis guineensis from Malaysia. Guangdong For. Sci.Technol., 24: 84-86.