scholarly journals GEOCHEMICAL AND MINERALOGICAL STUDIES OF CRYSTALLINE LIMESTONE OCCURRED NEAR PODUPATTI VILLAGE OF ETTAYAPURAM TALUK, TAMIL NADU

2017 ◽  
Vol 8 (2) ◽  
Keyword(s):  
Tamil Nadu ◽  
Crystalline Limestone

Natural parasitism of eggs of yellow stem borer, Scirpophaga incertulas Walker (Lepidoptera: Crambidae) in rice ecosystem at Tiruchirappalli, Tamil Nadu

ENTOMON ◽  
2020 ◽  
Vol 45 (3) ◽  
pp. 181-188
Author(s):  
T. Sharmitha ◽  
C. Gailce Leo Justin ◽  
S. Sheeba Joyce Roseleen ◽  
P. Yasodha
Keyword(s):  
Field Study ◽  
Tamil Nadu ◽  
Host Density ◽  
Stem Borer ◽  
Scirpophaga Incertulas ◽  
Egg Masses ◽  
Yellow Stem Borer ◽  
Rice Ecosystem ◽  
Natural Parasitism

Three species of parasitoids viz., Telenomus dignus Gahan, Trichogramma japonicum, Ishii and Tetrastichus schoenobii Ferriere were recorded from the egg masses of rice yellow stem borer, Scirpophaga incertulas (Walker) in a field study. The extent of parasitism was high during Rabi (43.33 – 93.33 %) and low during Kharif (0 - 40.00 %). Parasitism by T. dignus was maximum in October (50.00 %), T. japonicum, in November (23.08 %) and T. schoenobii in February (55.55 %). dignus and T. schoenobii in combination parasitized maximum number of egg masses (41.82 %). Multiple parasitism by the three species was high in December (8.33 %) and January (7.14%). Parasitic potential was maximum, when T. schoenobii alone parasitised the egg masses followed by T. dignus and T. schoenobii in combination. Host density in the field influenced the extent of parasitism.

Water Resource Mismanagement in Tamil Nadu & Its Impacts on Farmers

2011 ◽  
Vol 3 (12) ◽  
pp. 320-321 ◽  
Author(s):  
P. SHANKAR P. SHANKAR ◽  
◽  
Dr. S. RAMACHANDRAN Dr. S. RAMACHANDRAN
Keyword(s):  
Water Resource ◽  
Tamil Nadu

Causes for Agricultural labour Migration in Tamil Nadu

2012 ◽  
Vol 2 (4) ◽  
pp. 7-8
Author(s):  
K. Suresh Babu ◽  
◽  
Dr. K. Balanaga Gurunathan
Keyword(s):  
Tamil Nadu ◽  
Labour Migration

Informal Credit System Through Social Entrepreneurs in Tiruchirappalli District, Tamil Nadu

2012 ◽  
Vol 3 (6) ◽  
pp. 21-23
Author(s):  
Dr. C. Paramasivan Dr. C. Paramasivan ◽  
◽  
T. Kannan T. Kannan
Keyword(s):  
Tamil Nadu ◽  
Credit System ◽  
Social Entrepreneurs ◽  
Informal Credit

Distribution of Sickle Cell Disease Among Tribal Population of Nilgiri District of Tamil Nadu

2012 ◽  
Vol 2 (11) ◽  
pp. 243-247
Author(s):  
Brindha B Brindha B ◽  
◽  
Vidyalakshmi R Vidyalakshmi R ◽  
Prashanthi Devi M Prashanthi Devi M
Keyword(s):  
Sickle Cell Disease ◽  
Sickle Cell ◽  
Tamil Nadu ◽  
Tribal Population ◽  
Cell Disease
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