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Quantitative study of Nitrogen application on the growth of Bt and non-Bt Cotton hybrids.
B.SIVA KUMARI,Dr .B.GANGAIAH,Fr.Dr S.EMMANUEL S.J ANDHRA LOYOLA COLLEGE –VIJAYAWADA,A.P
Introduction of transgenic plants is bringing about Agricultural revolution .Bt cotton is one of the important transgenic crop. Cotton is a commercial crop and much importance is given particularly in the cultivation aspects. India has been traditional home of Cotton and cotton textiles. Over the last century cotton nutrition and management practices were studied extencively.BtCotton is introduced in Andhra Pradesh as necessitated the need for comparative study of physiological and morphological parameters of Bt and non-Bt hybrid .The effect of Nitrogen on the growth and physiological parameters have been experimentally assed.
In this study a field experiments are conducted in Bt non-Bt cotton varieties (RCH-317, LHH-144) respectively with five different levels of Nitrogen fertilizer, The level of 50% of Nitrogen utilization is Cost effective, and induced a progressive increase in root length(101%), Shoot length(120%), fresh weight (110%) and Dry weight (150%) than control of Bt and non-Bt hybrid varieties.At 35 DAI, also maximum induction in Bt hybrid followed by non-Bt hybrid cotton varieties. The present study should benefit the formers who are in economic crisis at this point of time.
This paper is presented in the national seminar which is conducted by JMJ College for women, Tenali.
INTERNATIONAL SEMINAR
Fr. Dr.S. Emmanuel S.J and Mrs. B.Siva Kumari attended an international seminar in xth International plant Virus Epidemiology Symposium in ICRISAT Patancheru Hyderabad India on 15th to 19th October 2007.
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