Papers by Nivedita Ghayal
Current Agriculture Research Journal
Invasive or alien weeds are those which are introduced to new areas intentionally or unintentiona... more Invasive or alien weeds are those which are introduced to new areas intentionally or unintentionally. They are undesirable plants which affect crop production, their quality and quantity, other resource utilization and income generation activities of the humans. Chromolaena odorata is one such invasive or alien weed which has invaded Maval region in Pune district. Chromolaena odorata has shown gradual increase in its abundance and decrease in natural Phytodiversity and crop diversity over frequent field visits. The present study was therefore undertaken to investigate allelopathic potential of leachates of root, stem, and leaf of Chromolaena odorata on common legumes in Maval tehsil like Horsegram, Lentil, and Mothbean in seed germination bioassay experiment. Petri plate bioassay study revealed that lower concentrations of leachates promoted root length, shoot length, Vigour index but higher concentration (20%) of aqueous leachates reduced seed germination in Horsegram, Lentil, and ...
International journal of mosquito research, 2024
Journal of Threatened Taxa
The traditional practice of conservation on religious basis along with commercial linkages at a l... more The traditional practice of conservation on religious basis along with commercial linkages at a local level is an interesting system from the point of view of its ecological, economical as well as institutional sustainability. Dhoop-rahat, in the Western Ghats region of Bhor Taluka in Pune District, is possibly the only sacred grove dedicated to a religiously important species Canarium strictum Roxb. Dhoop (black dammar resin) is traditionally extracted from C. strictum. The present study attempts to assess Dhoop-rahat and its surrounding historic sacred landscape with focus on the rare C. strictum individuals in the backdrop of changes in the ecological, geographical, socio-cultural, and economical dimensions associated with it, over time. Field and market surveys were conducted and RS-GIS techniques were used in the study. Community conserved Dhoop-rahat sacred grove has two individuals of C. strictum along with seven endemic and one IUCN Red Listed species. Successful regenerati...
International journal of ecology and environmental sciences, Nov 28, 2020
Bioscience Biotechnology Research Communications, 2020
Biosciences Biotechnology Research Asia, 2018
Many invasive weeds are known to create their deleterious effects on biological ecosystems and al... more Many invasive weeds are known to create their deleterious effects on biological ecosystems and also rhizosphere soils. Weeds such as Cosmos and Xanthium have their existence near agricultural crops fields. Such weeds grow in abundance, releasing specific allelochemicals which have adverse effect on germination rate, physiological patterns and reproduction of crop plants. In present work, allelopathic effects of leaf leachates of Cosmos and Xanthium were observed on seed germination and seedling growth of Triticum aestivum, Vigna radiata and Trigonella foenum-graceum like crops. Seed germination was inhibited at higher concentration at 6% while lower concentrations showed stimulatory effect on Mungbean and Fenugreek from 1%-4% concentrations. But seed germination percentage of Vigna and Trigonella showed 70% and 60% growth in response to leaf leachates of Cosmos at 6% concentration. Triticum showed total inhibition of 40% to both leaf leachates. The qualitative phytochemical analyses...
South Asian Journal of Experimental Biology, 2017
The invasive plant species hamper crops, human activities and become part of dynamic ecosystems, ... more The invasive plant species hamper crops, human activities and become part of dynamic ecosystems, which grow in varied habitats and harsh ecological conditions and often invade the new ecosystems. The campus of Pune University is highly rich in phytodiversity of native and invasive weeds, which interact with each other. The invasive weeds like Cassia uniflora Mill. non Spreng, Alternanthera tenella Colla., Synedrella nodiflora (L) Gaertn, S. vialis Gray and native weed species like Achyranthes are showing dominance in the campus. The GPS mapping indicated that C. uniflora, S. nodiflora, . tenella, Blainvillea acmella, Euphorbia geniculata, Triumfetta rhomboidea and C. obtusifolia were dominant and occasionally forming pure stands in the campus reducing the phytodiversity of natives by substitution. The results on weed-weed interactions indicated that major associations were between Cassia and Achyranthes, Cassia and Bidens . Synedrella population was forming monothickets. The studies...
Journal of Pharmacy and Bioallied Sciences, 2011
Monocropping of sugarcane is highly profitable to the farmers and sugar industry, as it reduces t... more Monocropping of sugarcane is highly profitable to the farmers and sugar industry, as it reduces the production cost by 30-40%. But productivity of sugarcane under multiratooning is declining by 30-50 % every year due to reduction in cane population per hectare in the state of Maharashtra. The objectives of this study were to explore the changes in beneficial and phytotoxic ratoon cane rhizosphere microflora, soil enzymes and soil NPK level under sugarcane monocropping from high recovery zone and medium recovery zone. The intensive monocropping of sugarcane was found to induce soil sickness due to accumulation of allele chemicals released from sugarcane trash and root exudation, development of phytotoxic microflora and one sided nutrient exhaust. It also caused almost double increase in phytotoxic fungal and bacterial population along with five times more stimulation in the activities of soil enzymes like dehydrogenase, cellulase and amylase. All such alterations correlate with drast...
Ants are the major mutualists in the plant -ant interaction system playing a major role in the su... more Ants are the major mutualists in the plant -ant interaction system playing a major role in the survival of plants by deterring herbivore and increasing plant health and fitness of the plant. To get better insights into the ant-plant interaction system, Clerodendrum chinense occupied by Crematogaster roghenoferi were observed for six months to assess the influence of presence and absence of ants on the flowerets blooming. In a total of (n=34) flowerets bunch, 17 were used as control and 17 experimentation that were treated with ant barrier glue to restrict the ants visitation to the flowerets bunch. By using the Students t-test, our study revealed the facultative behaviour of ants. Citing the equal presence of herbivores in both the control and experimented sets, and decreased floweret blooming in anting-continued (control) whereas increased floweret blooming in de-anted (experimented). The present study has shown the facultative interaction of C. roghenoferi with C. chinense and its...
Cassia uniflora and Synedrella nodiflora are the dominant invasive weeds in the campus of Pune Un... more Cassia uniflora and Synedrella nodiflora are the dominant invasive weeds in the campus of Pune University (M.S.) India. Their allelopathic activity has greatly affected the phytodiversity in the campus. With the view of their huge biomass prospecting, the larvicidal potential of aqueous leaf leachates of these weed species were tested against the larvae of Aedes aegypti. The experiments revealed that leaf leachates of both the weeds showed lethal effects on the larvae. The effect of Synedrella nodiflora leaf leachates was more pronounced than that of Cassia uniflora. The mortality was observed to increase with increasing exposure and the concentrations of leaf leachates of both the weeds. This larvicidal activity was probably due to the presence of allelochemicals present in the leaf leachates of these two plants. HPTLC was used to analyze these allelochemicals, which revealed that the leaves of both the plants were containing terpenoids, steroids, flavonoids and pungent and bitter ...
International Journal of Agriculture and Biosciences, 2014
Received: Revised: Accepted: March 10, 2014 May 12, 2014 July 15, 2014 The invasive weeds like Ca... more Received: Revised: Accepted: March 10, 2014 May 12, 2014 July 15, 2014 The invasive weeds like Cassia uniflora Mill. non Spreng and Synedrella nodiflora (L) Gaertn, are showing dominance in Pune University campus. They are observed in the form of pure stands reducing the phytodiversity in the areas studied. The allelopathic potential of invasive weeds was screened by using their aqueous leaf leachates for seed germination bioassay which indicated that the seed germination, root and shoot length, root: shoot ratio and vigour index were significantly inhibited in mungbean at all concentrations. The results of seed germination bioassay were in conformity with that of seedling physiology. The effect of Synedrella leachates was more pronounced than that of Cassia. It was confirmed that both the weeds had strong allelopathic or phytotoxic influence due to presence of different allelochemicals.
Bioscience Biotechnology Research Communications
The successful plant invaders have profound multitude effects on different aspects like soil prop... more The successful plant invaders have profound multitude effects on different aspects like soil properties, mineral nutrient cycling, soil organic matter dynamics, productivity and ecosystem functioning. Invaders become idiosyncratic causing effects on native plant communities as a consequence of their higher ability for acquiring soil nutrients. To test this hypothesis, Alternanthera (ALT) and Euphorbia are chosen since these species are found to be fast spreading and high density plants commonly observed in semiarid soils. The analysis of mineral nutrients from these plants indicated that the capacity for nutrient absorption is higher than a native (ACH) that leads to their luxuriant growth. Voracious uptake of minerals like K + (1640.0 ppm), Ca 2+ (910.78 ppm), PO4 3- (138.4 ppm) Mg 2+ (605.5 ppm) is observed for ALT while ACH exhibited lesser uptake (1.80 ppm, 62.66 ppm, 5.00 ppm and 312.0 ppm respectively) for these nutrients. Moreover, rhizosphere soil analysis also indicated tha...
ijpbs.net
Page 1. This article can be downloaded from www.ijpbs.net B - 188 International Journal of Pharma... more Page 1. This article can be downloaded from www.ijpbs.net B - 188 International Journal of Pharma and Bio Sciences INFLUENCE OF SUGARCANE MONOCROPPING ON RHIZOSPHERE MICROFLORA, SOIL ENZYMES AND NPK STATUS. Co Authors ...
Biosciences Biotechnology Research Asia
Many invasive weeds are known to create their deleterious effects on biological ecosystems and al... more Many invasive weeds are known to create their deleterious effects on biological ecosystems and also rhizosphere soils. Weeds such as Cosmos and Xanthium have their existence near agricultural crops fields. Such weeds grow in abundance, releasing specific allelochemicals which have adverse effect on germination rate, physiological patterns and reproduction of crop plants. In present work, allelopathic effects of leaf leachates of Cosmos and Xanthium were observed on seed germination and seedling growth of Triticum aestivum, Vigna radiata and Trigonella foenum-graceum like crops. Seed germination was inhibited at higher concentration at 6% while lower concentrations showed stimulatory effect on Mungbean and Fenugreek from 1%-4% concentrations. But seed germination percentage of Vigna and Trigonella showed 70% and 60% growth in response to leaf leachates of Cosmos at 6% concentration. Triticum showed total inhibition of 40% to both leaf leachates. The qualitative phytochemical analyses...
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Papers by Nivedita Ghayal