Tropical Forest Research Institute

Jabalpur, India

Tropical Forest Research Institute

Jabalpur, India
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Blue gum chalcid wasp, Leptocybe invasa Fisher & LaSalle (Hymenoptera: Eulophidae), is a major gall making insect species of eucalyptus, causing serious damage to seedlings in nursery stage. An insectary/nursery of eucalyptus was developed at this Institute to evaluate the effects of biopesticide, Spinosad 45% SC (CONSERVE 45% SC) and neonicotinoids, Acetamiprid 20% SP (SHARP 20% SP) and Imidacloprid 17.8% SL (MIDA 17.8% SL) against gall insect in seedlings. Spraying of biopesticide and neonicotinoids was carried out for six months at 15 days interval. Monthly observations were recorded on seedling height and development of galls in seedlings. Both biopesticide and neonicotinoids were found effective against L, invasa. Results revealed that spraying of biopesticide and neonicotinoids on seedlings of eucalyptus at the concentration of 0.05% significantly (P>0.05-P<0.01) reduced the gall formation and increased the height of seedlings. On the basis of seedling height and reduction in gall production, biopesticide and neonicotinoids used in the present work can be arranged in descending order: Imidacloprid > Acetamiprid > Spinosad. The findings suggest that spraying of biopesticide and neonicotinoids needs to be started before one month age of seedlings for management of gall insect to save eucalyptus in nursery stage.


Shukla A.K.,PDPM Indian Institute of Information Technology, Design & Manufacturing | Shukla A.K.,Tropical Forest Research Institute | Chelladurai H.,PDPM Indian Institute of Information Technology, Design & Manufacturing | Tiwari S.,Tropical Forest Research Institute
Materials Today: Proceedings | Year: 2017

Friction stir welding (FSW) uses a non consumable, continuously rotating tool to generate frictional heat required for joining different surfaces. Various welding parameters like tool shoulder diameter, tool rotational speed, tool pin length, welding speed, etc., play a major role in deciding the properties of friction stir welded joint. Three levels of input variables namely tool rotational speed and pre-heat time have been considered to carry out FSW process on 3mm thickness work piece of aluminium 1050 alloy. The experimental investigation is followed by statistical analysis to find out theoretical (predicted) values of the force. In this work an attempt has been made to analyze the effect of pre-heat time on force during friction stir welding of aluminium 1050 alloy. The results show that force decreases continuously with increase in pre-heat time. © 2017 Elsevier Ltd. All rights reserved.


Vijendra N.,Tropical Forest Research Institute | Kumar K.P.,Tropical Forest Research Institute
African Journal of Pharmacy and Pharmacology | Year: 2010

The present paper deals with the traditional knowledge of traditional herbal healers of Chhindwara and Betul districts of Madhya Pradesh, India regarding the use of plants for the treatment of various diseases prevalent in the tribal pockets. The herbal healers of these region use plant/plant parts of their suitable preparation for treating various ailment. Information collected from traditional tribal healers, medicine men etc has revealed that plant/plant parts of 77 species from Chhindwara district and 50 species from Betul district of forest origin are utilized as paste, powder, juice, decoction and extract for the treatment of various diseases of local people of the area. The knowledge of plants used by traditional herbal healers for ailments would be immense help to replace synthetic drugs. © 2010 Academic Journals.


Singh N.,Tropical Forest Research Institute | Verma R.K.,Tropical Forest Research Institute
Nature Environment and Pollution Technology | Year: 2017

Environmental concerns associated with the use of synthetic chemicals/petrochemical based pesticides have emphasized the importance of developing eco-friendly products with lower mammalian toxicity and a lower persistence in the environment. Seed chemicals of Pongamia pinnata were isolated and modified into saponified and amide products. Products derived from P. pinnata protein were completely soluble in water and their aqueous solutions are clear at room temperature, while saponified products showed turbidity at higher concentrations. The surface tension and viscosity of saponified products were found to be changed with dilutions, 0.03-0.05 N/m, 0.45-1.35 mpa.s at 0.1 to 5% concentrations, respectively, while surface tension and viscosity of diethanolamide product ranged from 0.036 to 0.020 N/m and 0.023 mpa.s to 1.02 mpa.s at 0.1 to 10% concentration, respectively. The properties of both products showed better surface tension lowering ability and wetting power in comparison to water. Significant (P=0.01) fungal growth inhibition was recorded at higher dilution against the tested fungus, Flavodon flavus and Penicillium chrysogenum. The diethanolamide product showed complete fungal growth inhibition at 5.0% dilution even after 7 days against F. flavus and P. chrysogenum. The present study concludes that surfactant formulation of non edible oil seeds contains fungicidal activities. The different dilutions exhibited pronounced toxicity against the target fungal species. © 2017, Technoscience Publications. All rights reserved.


Pandey A.K.,Tropical Forest Research Institute | Ojha V.,Tropical Forest Research Institute
Indian Journal of Pharmaceutical Sciences | Year: 2011

Embelin (2,5-dihydroxy-3-undecyl-2,5-cyclohexadiene-1,4-benzoquinone) is a phenolic compound found in the fruits of Embelia tsjeriam-cottam and is responsible for the medicinal properties of the plant Thus the fruits are harvested at a large scale before maturity leading to depletion of population. Since the chemical constituents of medicinal plants are directly associated with the harvesting time, a study was conducted in different forest areas of Chhattisgarh, India, to standardize the harvesting time of Baividang fruits on the basis of their embelin content during 2005-08. The embelin content was determined by RP-HPLC and varied from 1.09 to 5.21% (w/w). The immature fruits collected in October contain an average of 1.67% embelin whereas mature fruits collected in December on an average contain 4.64% embelin. On the basis of our findings it can be concluded that fruits should be harvested after attaining maturity to get better quality produce and also to maintain the sustainability of plant.


Saxena H.O.,Tropical Forest Research Institute | Soni A.,Tropical Forest Research Institute | Mohammad N.,Tropical Forest Research Institute | Choubey S.K.,Tropical Forest Research Institute
Journal of Chemical and Pharmaceutical Research | Year: 2014

Phytochemicals are the naturally occurring compounds present in all plant parts which together with nutrients and fibres provide protection to plants and humans against diseases. Development of rapid and accurate methods of screening of medicinal plants for particular chemicals has aided phytochemical analysis enormously. In this paper, extracts of leaves, stem and roots of Uraria picta in various solvents have been screened for qualitative determination of phytochemical constituents i.e. secondary metabolites (alkaloids, flavonoids, steroids, terpenoids, phenols, saponins tannins and cardiac glycosides). Along with this, macro elements (Na, K, Ca, Mg, P) which are essential for maintaining the animal body were also determined quantitatively in leaves (Na-0.04%, K-0.67%, Ca-1.81%, Mg-0.21% and P-0.04%), stem (Na-0.04%, K-0.73%, Ca-1.41%, Mg-0.11% and P-0.07%) and roots (Na-0.02%, K-0.46%, Ca-0.82%, Mg-0.13% and P-0.05%) of the plant. Phytochemicals investigated are biologically active compounds to combat diseases and elements to maintain good health. © 2014, Journal of Chemical and Pharmaceutical Research. All rights reserved.


Shackleton C.M.,Rhodes University | Pandey A.K.,Tropical Forest Research Institute
Forest Policy and Economics | Year: 2014

Non-timber forests products (NTFPs) provide multiple livelihood benefits to local communities and regional and national economies. And yet this knowledge is rarely drawn upon in debates around and design of poverty alleviation or land use policies, strategies and projects. Unless the accumulating wealth of empirical evidence can be translated into policies and approaches at higher levels, and integrated into poverty alleviation programmes, it will have little impact on local and national poverty profiles. In this paper we propose and briefly discuss eight steps to facilitate integration of NTFPs into the development agenda, for the benefit of local communities. These include: (1) proper inventory of NTFP stocks, (2) research on NTFP ecology and sustainable harvest levels, (3) introduction of extension services for NTFPs, (4) inclusion of NTFPs in land management and trade-off decisions, (5) integration of NTFPs into sectoral policies, (6) ensuring NTFP commercialisation is not at the expense of local livelihood needs, (7) promoting security of access and use, and (8) examination of local contextual drivers of unsustainable use. Each is presented along with examples or proposals towards implementation. © 2013 Elsevier B.V.


Pandey A.K.,Tropical Forest Research Institute | Shackleton C.M.,Rhodes University
Forest Ecology and Management | Year: 2012

Embelia tsjeriam-cottam Roem & Schult A. DC. (Myrsinaceae), popularly known as Vaividang, is a vulnerable forest species because of the high demand of fruits for medicinal purposes. It is in great demand in ayurveda and the pharmaceutical industry (>100. t/yr), which has imposed tremendous pressure on some natural populations. The fruits contain embelin (a benzoquinone derivative), which has wide clinical applications. Considering the importance, growing use and decreasing populations in some areas of its natural habitat, a study on development of sustainable harvesting practices of E. tsjeriam-cottam fruits was conducted in Chhattisgarh, in central India. Experiments were laid out in Dhamtari, Marvahi and Bilaspur forest divisions of the state covering both protected and open forests in a randomized design with three replications. At each site, quadrats of 40 × 20 m were laid out to study the effect of two fruit harvesting methods and four harvesting intensities on fruit yield, and regeneration of the species. Fruits were analyzed for their embelin content by HPLC method. This study is the first to experimentally assess the consequences of harvesting of E. tsjeriam-cottam fruits from India. It was found that up to 70% fruits could be hand plucked at the right time of maturity (December) to obtain quality produce without impacting the current population size. Since every year is not a good fruiting year, it is difficult to develop universal harvest regime for sustainable management of E. tsjeriam-cottam. The embelin content increased as fruits ripened, ranging from 1.01% to 5.63%. The adoption of sustainable harvesting practices will be helpful in sustainable management of E. tsjeriam-cottam and also provide income and livelihood opportunities to rural people on a sustainable basis. © 2011 Elsevier B.V.


Pandey A.K.,Tropical Forest Research Institute | Ojha V.,Tropical Forest Research Institute | Choubey S.K.,Tropical Forest Research Institute
American Journal of Food Technology | Year: 2012

Apart from the diverse uses of bamboo, the tender shoots, being low in fat, high in dietary fiber and rich in mineral content (good source of potassium) have been consumed traditionally by the people. The shoots are consumed due to their exotic taste, flavour, medicinal and nutritive value. Bamboo shoots are available for a limited period and have a short shelf-life, thus, they need to be processed and utilized immediately after harvest. Therefore, a study was conducted to determine the nutritional value and develop value added edible products from different bamboo species viz., Dendrocalamus strict us, Bambusa bambos and Bambusa tulda, found in central India and Dendrocalamus asper (known edible bamboo species of Thailand) grown in central India. Nutritional analysis revealed that the nutritive value of D. strict us, B. bamboos and B. tulda is at par with D. asper. Thus, these species have a potential for edible shoot production in central India. Different value added products viz., nuggets (bari), pickle and papad (cracker) were made from fresh bamboo shoots. Organoleptic, sensory and chemical evaluation done at monthly intervals, to determine the shelf-life of product, revealed that the products were good in taste, texture and quality for 6 months from the date of processing at ambient conditions (25-40°C) in poly propylene and glass containers. Value addition (by making different edible products) will increase the utilization of bamboo shoots and provide livelihood opportunities to the local population. Present study will be useful in optimum utilization of bamboo shoots. © 2012 Academic Journals Inc.


Pandeyu A.K.,Tropical Forest Research Institute | Ojha V.,Tropical Forest Research Institute | Yadav S.,Tropical Forest Research Institute | Sahu S.K.,Tropical Forest Research Institute
Research Journal of Phytochemistry | Year: 2011

Phytochemical estimation and radical scavenging activity were carried out in the barks of Bauhinia variegata, Saraca asoka and Terminalia arjuna collected from central India with the objective to determine optimum harvesting age (girth class). Bark samples were analyzed for total phenols, flavonoids and tannins. Radical scavenging activity of the barks was evaluated using DPPH assay. Significant variation was observed in total phenols and tannins in B. variegata; flavonoids and tannins in T, arjuna with respect to different girth classes. However, no significant variation was found in chemical constituents among different girth classes of S. asoka. Gallic acid was used as standard having IC 50 value of 1.06±0.10 μg mL -1. Radical scavenging activity showed significant variation in the barks of different girth classes of B. variegata, S. asoka and T. arjuna. The results revealed that the optimum girth class to harvest barks of B. variegata was 36-55 cm, S. asoka 61-90 cm and T. arjuna 121-150 cm as these were found to contain maximum concentration of active ingredients and possess high radical scavenging activity. Among the studied species T. arjuna showed maximum radical scavenging activity and thus can be termed as a potent antioxidant species whose bark can be used for making various formulations containing natural antioxidants. © 2011 Academic Journals Inc.

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