Debashish Sen

• Tripura University

In Tripura, India the soil productivity is less due to its light texture, acidic in nature, low fertility status, low microbial activity. Thus, a field experiment on groundnut (Arachis hypogaea L.) was carried out on acidic soil of Khowai district of Tripura during 2017 and 2018 to evaluate the impact of the application of various combinations of l...

A multi-locational trial on rizi-pisciculture was conducted to evaluate the feasibility and economic viability of rice fish culture (RFC) in the East Siang District of Arunachal Pradesh. The experiment was conducted in the wet season of 2010 and 2011 in 4 villages of the district viz. Ngorlung, Niglok, Balek and Mirem. One experimental unit at each...

This research was carried out with the Adi and Galo tribes of East Siang and West Siang districts of Arunachal Pradesh, India to understand fishing methods employed by them using stones and boulders occurring in the river beds of small tributaries of the Siang River in the study area. The identified sustainable fishing technique is locally known as...

An approach was made to evaluate the feasibility and economic viability of rice fish culture (RFC) by conducting trials in 8 different villages viz. Ngorlung, Niglok, Balek, Mirem, Sikatode, Ayeng, Rayang and Seren of East Siang district, Arunachal Pradesh during Kharif seasons of 2011 to 2014. In the multilocational trials on rizi-pisciculture sur...

Essential oil from aromatic plants showed strong nematicidal activity in vitro experiments. Among six tested essential oils, percent juvenile mortality was observed in lemon grass (Cymbopogon citratus), 89, 51 as well as in palmarosa (Cymbopogon martini), 80 and 44 at the doses of 500 and 250 ppm respectively at 12 hour of exposure time. However, m...

The burgeoning human population requires increased amounts of food from a shrinking agricultural land base. To date, modern agriculture has largely achieved these objectives but intensive and extensive cultivation of high yielding varieties coupled with the application of geometrically increasing amounts of agro chemicals has also resulted deterior...

Agriculture contributes 26 per cent of the GDP in Tripura of which the major contribution is from horticulture crops like fruits, vegetable, plantation crops and spices etc. The prevailing agro climatic conditions, surplus rainfall, good soil depth and mild acidic pH of the favors the cultivation of tuber crops viz. tapioca, sweet potato, elephant...

Rodent outbreaks have been recorded in the north-eastern hill region of India since time immemorial. This study was carried out in Arunachal Pradesh where rodent outbreaks are associated with Dendrocalamus hamiltonii, Dendrocalamus strictus, Bambusa tulda, Bambusa balcoa and Schizostachyum arunachalensis. Four species of rodents are reported in the...

A field experiment was conducted during the rabi season of 2007- 2008 and 2008-2009 at Paschim Medinipore, West Bengal to study the effect of transplanting dates and plant population on growth parameters of potato raised from TPS. Dry matter accumulation per plant was more in early transplanted (December 3) and sparsely populated (60 cm x 15 cm) cr...

Rose varieties were evaluated in field against Diplocarpon rosae, which causes of black spot disease of rose. Black spot resistance was visually evaluated for thirty seven rose varieties against D. rosae. Out of thirty seven varieties evaluated, none of the varieties were found immune, very highly resistant, highly resistant, resistant and moderate...

The rodents are important animals in food chain and play an important role in the ecosystem. They also serve as prey for many important and endangered carnivorous and make up almost 40% of the mammalian species. They are essential part in the regeneration of forests. In Arunachal Pradesh, there are three types of forest i.e. tropical, subtropical a...

The Adi tribe of Arunachal Pradesh is very rich in indigenous traditional knowledge in conserving natural resources. The Yetbung Lingang and Linkum are such traditional water conservation structures made up of locally available stones/ boulders, bamboo and tokopata and used to divert the perennial stream of the area for Panikheti and winter crop cu...

A study was carried out to evaluate the physical and chemical properties of soils and its relationship with water holding capacity along altitudinal gradient for cultivated soils of East Sikkim. The physiography of the study area was mainly hilly terrain with closely spaced contour on steep sloppy lands. The soil texture ranged from sandy loam to c...

Field experiment was conducted during 2003-04 to study the effect of vermicompost, farmyard manure and water hyacinth compost in comparison to chemically fertilized and unfertilized plots on crop-plants in HYV Swarna and local variety Magaisal. The experiment followed split plot design with two varieties of rice in the main plots and five nutrient...

Field experiments were set up in an acid alluvial sandy loam soil to evaluate relative efficacy of organic manures in improving productivity and pest tolerance of an okra crop cv Arka Anamika (IIHR Sel 10). Three commercial manures, Processed Municipality Waste (PMW), Vermicompost (VC) and Oil Cake Pellets (OCP), were assessed in relation to Farmya...