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N. Ramana Rao ¹, M. N. Reddy ¹

Affiliations
1 Department of Geology, Osmania University, Hyderabad, IN

Abstract

No Abstract.

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P. V. Soma Yajulu ¹, M. N. Reddy ¹

Affiliations
1 Department of Geology, Osmania University, Hyderabad, IN

Abstract

An isolated oval body of hornblende porphyrite occurring three km SE of Chityal, Nalgonda District, A.P. shows typical porphyritic texture both megascopically and microscopically. Euhedral primary hornblende occurs as pnenocrysts in a mesostasis of secondary actinolite and altered plagioclase. With the development of diopside at the expense of hornblende, the rock has acquired a granulitic texture while retaining the porphyritic habit.

Chemically the rock is characterised by low alumina and high magnesia and calcium. Among the trace elements, the high concentration of Cr, Cu, V and Co are in sympathetic relation with the major elements. The somewhat high values of Li, Sr and Rb, are thought to be partly due to introduction through water-enriched magmatic fluids which have metamorphosed the primary members of the rock. Tne rock appears to have suffered first a retrograde and then a prograde metamorphism.

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Aarti Kawane ¹, K. A. Geetha ¹, M. N. Reddy ², Satyabrata Maiti ¹

Affiliations
1 Directorate of Medicinal and Aromatic Plants Research, Boriavi, Anand 387 310, IN
2 Veer Narmada South Gujarat University, Surat 395 007, IN

Abstract

No Abstract.

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M. N. Reddy ¹, M. Charitha Devi ¹, N. V. Sreedevi ¹

Affiliations
1 Department of Applied Microbiology S.P. Mahila Visvavidyalayam Tirupati 517502, Andhra Pradesh, IN

Abstract

Disease suppressive role of the antagonistic microorganisms, Trichoderma harzianum, Trichoderma virens and VAM fungus against rhizome rot of turmeric (Curcuma longa L.) caused by Fusarium solani was established in both pot culture and field studies. VAM treated plants in the infested soil showed reduced disease incidence as compared to F. solani alone treated plants. Trichoderma and Gliocladium treatment resulted in less disease incidence as compared to VAM treated plants. Among the three-biocontrol agents tested, T. harzianum was found to be the most effective in disease control as compared to others. Plants treated with biocontrol agents were healthy with enhanced biomass and also yield to varied extents.

Keywords

Biological Control, F. solani, Rhizome Rot, Turmeric.

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