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Papers by Toge Riba

Hexane and chloroform extracts of Acorus calamus, Curcuma caesia, C. aromatic and C. longa gave 1... more Hexane and chloroform extracts of Acorus calamus, Curcuma caesia, C. aromatic and C. longa gave 100 % and different cultivars of Z. officinale gave mortality to the extent of 80 % and above at 2.0% concentration. The extracts of lesser non polar solvents gave low mortality. only A. calamus could give 100 % mortality at 4.0% concentration of ethyl acetate and acetone extracts. Among the plants, A. calamus gave the highest mortality in all the solvent extracts and it was followed by C. caesia.

Indian Journal of Horticulture, 2017

An experiment was conducted for two consecutive years (2011–12 and 2012–13) to identify resistant... more An experiment was conducted for two consecutive years (2011–12 and 2012–13) to identify resistant brinjal genotypes and evaluate the bio-efficacy of Pseudomonas fluorescens against bacterial wilt incited by Ralstonia solanacearum. None of the tested genotypes was found highly resistant against pathogen. Swarna Shyamali recorded the lowest wilt incidence (2.50% wilted plants) among all the genotypes. Hybrid-41, Swarna Pratibha, Arka Keshav and VNR-60 also showed resistant reaction. Anamika and BE-706 were found highly susceptible to bacterial wilt. Combination of seedling root dip treatment at the time of transplanting and soil drenching at 20 days after transplanting with P. fluorescens gave the lowest wilt incidence (14.75%), highest fruit yield (244.55 q ha−1) and the highest economic returns. However, it was comparable with soil drenching alone with P. fluorescens. The chemical treatments with bleaching powder and streptomycine (streptomicin sulphate 90% + tetracycline hydrochloride 10%) were found inferior to P. fluorescens soil drenching. Wilt incidence by using soil amendment mustard oil cake @ 5 q ha−1 and seedling root dip with P. fluorescens @ 25 g l−1 was at par with the chemical treatments.

A survey was conducted to document the edible insects available at East Siang District, Arunachal... more A survey was conducted to document the edible insects available at East Siang District, Arunachal Pradesh and Bishnupur District, Manipur, northeast India. East Siang district is predominated by the Adi tribe and Bishnupur district by the Meitei community. The two ethnic groups, viz. Adi and Meitei accept insects as their food. Most of the edible insects belong to the order Hymenoptera, Hemiptera, Orthoptera, Odonata and Coleoptera. Philosamia ricini is a commercialized insect species as food in Arunachal Pradesh. Based on their resources, Adis of East Siang accepted more terrestrial insects compared to Meiteis of Bishnupur. Meitei community of Bishnupur consumed more aquatic insects. One or the other species of insects are available in all the seasons, however, more species are available in the warm season. Most of the insects are consumed after processing. Some points to be considered for encouraging these edible insects as human food are also discussed.

Indian Journal of Traditional Knowledge (IJTK), Mar 3, 2021

The tribals lead the life with natural simplicity relying on primal truths reinforced by eternal ... more The tribals lead the life with natural simplicity relying on primal truths reinforced by eternal values. The strength of the tribes is that they are able to successfully cling to the primal skills and natural simplicity. Their creations speak of evolutions over time, and the arts and crafts created by them have timeless appeal. The primal instinct in all of us is evoked whenever we come across the crudest tribal handicrafts. The present case study was conducted during August and September 2019 and the study included combination of methods such as research viz., household survey of 44 Adi families, followed by a focused group discussion was adopted and also documented the artifacts of Adi tribe in East Siang district of Arunachal Pradesh, India. Further, the study also aimed at unearthing the kinds of possible threats that arise due to globalization which may affect traditional craftsmanship. Multitudinal sets of traditional artifacts created out of indigenous wisdom have been documented which affirm that the life of the Adi is intertwined with the forest products especially bamboo, canes and their products. However, the prevailing trend of globalization, with characteristics of immense, unexpected emphasis on capital, labour and information, is having growing influence on material culture and in this scenario, especially new generation prefers more of plastic products in their day to day lifestyle. On the contrary, traditional artifacts of Adi could offer innovative and sustainable solutions which can act as alternatives to plastic products.

Following the success story of Green Revolution in late 1960’s, there have been reports of either... more Following the success story of Green Revolution in late 1960’s, there have been reports of either stagnating or declining levels of crop productivity in recent years, which causes much alarm to the policy makers. Over exploitation of natural resources and excessive use of chemical in agriculture have lead to poor sustainability of farm production. On the other hand, there is continuous need to increase agricultural productivity in order to feed the fast growing human population. There will be approximately 11,000 million peoples in India to feed in the year 2050 AD, the stock of agricultural land will diminish, as a consequence the arable land area per person which was 0.3 hectares in 1981 will be decline to 0.13 ha in 2050 AD. To feed the future generations without degrading the resource base that supports crop productivity agriculture must become economically viable and ecologically sustainable. Though the value of Integrated Pest Management (IPM) in sustainable agriculture has be...

Shah Mustahid Hussain, Debashish Sen, Toge Riba, Mahesh Pathak and R.C. Shakywar Krishi Vigyan Ke... more Shah Mustahid Hussain, Debashish Sen, Toge Riba, Mahesh Pathak and R.C. Shakywar Krishi Vigyan Kendra East Siang, College of Horticulture & Forestry, Central Agricultural University, Pasighat–791102, Arunachal Pradesh Department of Natural Resource Management, College of Horticulture & Forestry, Central Agricultural University, Pasighat–791102, Arunachal Pradesh Department of Plant Protection, College of Horticulture & Forestry, Central Agricultural University, Pasighat–791102, Arunachal Pradesh E-mail: dr.d.sen@gmail.com

Rice is the staple food crop and is grown extensively in North East Hill region of India. Insect-... more Rice is the staple food crop and is grown extensively in North East Hill region of India. Insect-pests take a heavy toll of rice crop in Siang belt of Arunachal Pradesh resulting in losses in grain yields ranging from 10-51%. Insect specific predators and parasites used in biological control acts as natural biological control agents for these insect pests in the region. Keeping in view the above facts, roving field surveys were conducted in Kharif season of years 2015-2019 to identify natural enemy diversity (Predators and parasitoids) prevalent in rice in rainfed rice cropping system of five districts (East Siang, West Siang, Upper Siang, Lower Siang and Siang) of Arunachal Pradesh, falling under Siang belt of Arunachal Pradesh. The results revealed that as many as Twenty nine species of predators belonging to 20 genera under 15 families of 6 orders were recorded in traditional and improved rice growing belt under rainfed rice cropping system of Siang belt of Arunachal Pradesh. Dam...

Journal of Global Communication, 2016

Arunachal Pradesh is a tribal state inhabitant by 28 major tribes and 110 of subtribes. The Adi i... more Arunachal Pradesh is a tribal state inhabitant by 28 major tribes and 110 of subtribes. The Adi is one of the prominent communities which covers the central part of Arunachal Pradesh. The Adis have unique socio-cultural entity among other tribes of the state. They celebrate a number of festivals; in particular, their prime festivals are Aran, Solung and Etor. Trapping and hunting is a part of their culture and they use different indigenous traps and methods for hunting the rodents during Aran festival. The study was aimed to know the different rodent traps and importance of Aran festival in relation to rodent control. The Adi tribal community has invented their own indigenous traditional traps and methods to control the rodents. Four indigenous traps namely, Etku, Odde, Uju and Middu mainly made-up of bamboo and one traditional method that is Buroo were commonly used for rodent trapping by the Adi people. The Aran festival is celebrated during March of every year and rodent trapping is the main activity of the festival. It helps in controlling the rodents before growing the main crop of rice, side by side they have got ethnical importance being the exchangeable gift item during the engagement of bride and groom. The rodent meat is used during the worship of various benevolent god, goddess, deities and spirits for the well being of human kind.

Ecological Processes

Introduction: Evidence is mounting that traditional knowledge can play a critical role in shaping... more Introduction: Evidence is mounting that traditional knowledge can play a critical role in shaping the biodiversity conservation strategies and maintaining ecosystem services. This study was conducted with Adi community of Arunachal Pradesh (Ar P) state in the Eastern Indian Himalayas to understand as how local systems of forest classification governs conservation tradition and influences subsistence livelihoods. Twenty Adi villages were sampled from East Siang district of Ar P. A total of 197 men and 204 women (total of 401) Adi respondents were selected for this study. A combination of methodologies including in-depth interview, transect walks, focus group discussion, participant observation and informal interactions were combined for data collection. Results: Local forests are classified into 10 different categories based on indicators such as topography, cultural significance, use typology, ownership rights and plant diversity indicators. Local people assign different values (economic, cultural and ecological) to different forest types. Overall, morang followed by regpi and homegardens are perceived to be more valuable to the local needs than other forests with relative ranking of a particular forest reflecting its sustainability. Adis access several diverse services from these community-managed forests. Compared to men (3-35%), the role of women was assessed to be much higher (65 to 100%) in conserving forest biodiversity. Woman-led practices, instrumental in sustainable forest management, included deliberate manipulations of micro-habitats, sustainable harvesting strategies and species domestication. Men were mostly involved in ownership and decision-making roles and in devising social norms to ensure sustainability. Adi celebrate a number of cultural events to sustain biodiversity. Forest-based livelihoods are intrinsically connected to forest resource conservation and are governed by community approaches. Most of the community members gather plants, hunt wild animals and access other ecosystem services from these forests to sustain their livelihoods. Community-owned forests are collectively managed by an indigenous institution 'Kebang'. Conflicts relating to forest land use and resource management are resolved by the customary chief 'Gaon Burha' and his associates using traditional norms. Conclusions: Adi's system of forest classification, based on ecological, socio-cultural and livelihood indicators, is a location-specific yet comprehensive in nature. Study suggests that integrating the local indicators applied in classifying and strategies applied in managing the local forests can provide valuable insights to the policy makers for the sustainable conservation of forest resources.

This research was carried out with the Adi and Galo tribes of East Siang and West Siang districts... more 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 Lipum and practised by these communities. The capture of fish ranged from 4-10 kg per Lipum and one person could make 3-4 different Lipum structures per day. Lipum is prepared during winter season (in the month of November and December) and to undertake fishing during January and February. To prepare the Lipum, stones are placed in a circle with a diameter ranging from 1.5 m to 2.3 m, and arranged to produce a structure around 0.7 1.2 m high, depending upon water depth. Care is taken so that the Lipum remains submersed in water throughout the winter season. The lipum acts as a shelter for the fishes as it provides congenial environment to...