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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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20211
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Subject: Entomology × Author: DAS, TUHIN × Start date: 2021 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Germplasm Screening and Management of Coriander Aphid, Hyadaphis coriandri D.
    (Dr.RPCAU, Pusa, 2021) DAS, TUHIN; Prasad, Rabindra
    A sets of field experiments were conducted at the Tirhut College of Agriculture research farm at Dholi, Muzaffarapur, (Bihar) from November to March, 2020-21 to study the susceptibility of coriander germplasms to aphid infestation and the effectiveness of botanical insecticides against the coriander aphid, Hyadaphis coriandri. Through the seven weekly observations which were recorded during rabi season 2020-21, it was found that RD-416 had the lowest mean population (19.91 aphid/ plant) and RD-373 had the highest mean population (34.69 aphid/ plant). The resistance variabilities in coriander germplasms were as followed: RD-416> RD-380 > Acr-1 > RD-417 > RD-382 > RD-412 > RD-120> RD- 404 >RD-23> RD-188 > RD-379 > RD-378 > RD-383 > RD-365 > RD-407> RD-403> RD-377 > RD-366 > RD-154 > RD-373. In second objective, the combined effect of two sprayingsapplied at fortnightly interval against coriander aphid revealed that, thiomethoxam 25 WG @ 0.2g/l had lowest mean population of aphid (5.78 aphid/10 cm apical twig) and it was superior to all other treatments in terms of managing aphid population, followed by Neem Seed Kernel Extract @ 5 ml/l (14.02 aphid/10 cm apical twig) and Neem oil @ 3 ml/l (14.80 aphid/10 cm apical twig).However, Neem seed kernel extract @ 5 ml/l was found at par with neem oil @ 3 ml/l(14.80 aphid/10 cm apical twig), tobacco decoction @ 5ml/l (15.98 aphid/10 cm apical twig) and karanj oil @ 10 ml/l (16.68 aphid/10 cm apical twig) treatments. Remaining treatmentsviz.Lecanicillium lecanii@ 4 g/l (17.45aphid /10 cm apical twig) andyam Bean Seed Extract @ 5ml/l (YBSE) (18.77 aphid /10 cm apical twig) showed considerably less efficiency against coriander aphid. The plots treated with Thiomethoxam 25 WG @ 0.2g/lrecorded highest seedyield (12.95 q/ha).The seed yield obtained in the plots that were treated with Neem Seed Kernel Extract @ 5 ml/l, Neem oil @ 3 ml/l, tobacco decoction @ 5 ml/l and karanj oil @ 10 ml/l recorded 11.35 q/ha, 11.01 q/ha, 10.58 q/ha and 10.51 q/ha seed yield, respectively, and found comparable to each other and considerably superior to the other treatments.The lowest seed yield was achieved in Yam Bean Seed Extract @ 5 ml/l treatment (10.25 q/ha), followed by Lecanicillium lecanii@ 4 g/l (10.37 q/ha), which was statistically at par with one another. Thiomethoxam 25 WG @ 0.2g/l had the highest benefit-cost ratio (2.61) followed by Neem Seed Kernel Extract @ 5ml/l (1.99) and Neem oil @ 3ml/l (1.86). The treatment with Lecanicillium lecanii@ 4 g/l resulted the lowest benefit-cost ratio (1.59), followed by Yam Bean Seed Extract @ 5m/l, Karanj oil @ 10 ml/l and Tobacco decoction @ 5ml/l, which resulted benefit-cost ratios of 1.61, 1.66, and 1.75, respectively.