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Dr. Rajendra Prasad Central Agricultural University, Pusa

In the imperial Gazetteer of India 1878, Pusa was recorded as a government estate of about 1350 acres in Darbhanba. It was acquired by East India Company for running a stud farm to supply better breed of horses mainly for the army. Frequent incidence of glanders disease (swelling of glands), mostly affecting the valuable imported bloodstock made the civil veterinary department to shift the entire stock out of Pusa. A British tobacco concern Beg Sutherland & co. got the estate on lease but it also left in 1897 abandoning the government estate of Pusa. Lord Mayo, The Viceroy and Governor General, had been repeatedly trying to get through his proposal for setting up a directorate general of Agriculture that would take care of the soil and its productivity, formulate newer techniques of cultivation, improve the quality of seeds and livestock and also arrange for imparting agricultural education. The government of India had invited a British expert. Dr. J. A. Voelcker who had submitted as report on the development of Indian agriculture. As a follow-up action, three experts in different fields were appointed for the first time during 1885 to 1895 namely, agricultural chemist (Dr. J. W. Leafer), cryptogamic botanist (Dr. R. A. Butler) and entomologist (Dr. H. Maxwell Lefroy) with headquarters at Dehradun (U.P.) in the forest Research Institute complex. Surprisingly, until now Pusa, which was destined to become the centre of agricultural revolution in the country, was lying as before an abandoned government estate. In 1898. Lord Curzon took over as the viceroy. A widely traveled person and an administrator, he salvaged out the earlier proposal and got London’s approval for the appointment of the inspector General of Agriculture to which the first incumbent Mr. J. Mollison (Dy. Director of Agriculture, Bombay) joined in 1901 with headquarters at Nagpur The then government of Bengal had mooted in 1902 a proposal to the centre for setting up a model cattle farm for improving the dilapidated condition of the livestock at Pusa estate where plenty of land, water and feed would be available, and with Mr. Mollison’s support this was accepted in principle. Around Pusa, there were many British planters and also an indigo research centre Dalsing Sarai (near Pusa). Mr. Mollison’s visits to this mini British kingdom and his strong recommendations. In favour of Pusa as the most ideal place for the Bengal government project obviously caught the attention for the viceroy.

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Subject: Entomology × Author: Monica, Vamguri Latha × End date: 2015 × Start date: 2010 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Bio-efficacy of some newer acaricides and population dynamics of red spider mite, Tetranychus urticae Koch on brinjal, Solanum melongena L.
    (Rajendra Agricultural University, Pusa (Samastipur), 2013) Monica, Vamguri Latha; Kumar, Anil
    In order to study the bioefficacy of newer acaricides and population dynamics of red spider mite, Tetranychus urticae Koch on brinjal, experiments were conducted in the laboratory as well as in field conditions from the month of March to August 2012. The bioefficacy of newer acaricides against T.urticae was determined in the laboratory at Department of Entomology, S.R.I, R.A.U, where as the field experiment was laid out at the Research Farm of Rajendra Agricultural University, Pusa (Samastipur), Bihar, India. The results pertaining to the present studies have been abstracted below. The absolute population of two spotted mite, T.urticae commenced from the third week of March 2012 and continued its activity till the month of August. Initial population was low and gradually reached peak (6.91 mites per 1 cm2 leaf area) in the first week of June when the weather parameters viz.; maximum and minimum temperature (0C), relative humidity (%) at 07 and 14 hours and recorded 38.3, 27.1, 76 and 47 respectively. There was no rainfall (mm) during this period of observation. These weather parameters were found to be congenial for the population build up of red spider mite. The mite population gradually declined from the month of July and became untraceable in the month of August. The relationship between the population of T. urticae and the weather parameters showed significant positive correlation (r= 0.814) with maximum temperature and significant negative correlation (r= -0.425) with relative humidity at 07 hrs while, non-significant with minimum temperature, relative humidity at 14 hrs and rainfall. All these weather parameters combinedly produced 73.50 percent impact on mite population (R2 = 0.735). Eight newer acaricides including standard check (dicofol) that were tested against T. urticae on brinjal crop in laboratory conditions revealed that the treatments, T8 (dicofol @ 4 ml/ltr), T2 (fenopyroximate @ 0.8 ml/ltr), T3 (spiromesifan@ 0.7 ml/ltr ), T6 (propargite @ 4.0 ml/ltr ) and T1 (diafenthurion @ 0.75 gm/ltr) were highly effective by causing 98% mortality and possessed excellent acaricidal properties. It is quite evident from the data that the per cent mortality increased with increase in exposure period under laboratory condition. Under field conditions also, the bioefficacy of acaricides showed same pattern as that in laboratory conditions. The standard check i.e., dicofol recorded cent per cent mortality in the laboratory and 80 percent mortality in the field conditions respectively.