Current Science最新文献

{"title":"Spatial prediction of leaf chlorophyll content in cotton crop using drone-derived spectral indices","authors":"P. Shanmugapriya, K. R. Latha, S. Pazhanivelan, R. Kumaraperumal, G. Karthikeyan, N. S. Sudarmanian","doi":"10.18520/cs/v123/i12/1473-1480","DOIUrl":"https://doi.org/10.18520/cs/v123/i12/1473-1480","url":null,"abstract":"Crop health monitoring and assessment have become more successful with the advent of remote sensing technology in agriculture. The near-ground remote sensing (drone) technique has provided broader agronomic applications for better crop management. Using this technology, retrieving information about crop biophysical parameters on a non-destructive basis at spatial and temporal scales has been made possible. Several drone-derived spectral Vegetation Indices (VI) have assessed crop growth status in a larger farming area. This study generated vegetation indices maps for a cotton field area located at Tamil Nadu Agricultural University, Coimbatore. The ground truth chlorophyll data (SPAD-502 Minolta meter) was collected on the same day of drone image acquisition. Vegetation indices viz., Normalized Difference Vegetation Index (NDVI), Green Normalized Difference Vegetation Index (GNDVI), Normalized Difference Red Edge Index (NDRE), Red Edge Difference Vegetation Index (REDVI), Optimized Soil Adjusted Vegetation Index (OSAVI) and Modified Chlorophyll Absorption Ratio Index (MCARI) were derived from the five multispectral bands viz., red, green, blue, near-infrared and red edge. The data were processed using Pix4Dmapper software, and vegetation indices were derived using ArcGIS 10.6 software. Pearson correlation analysis and regression analysis were done for validation and accuracy for ground truth chlorophyll data and vegetation indices. It was concluded that the Modified Chlorophyll absorption Ratio Index showed a better correlation coefficient (R=0.933) with ground truth chlorophyll data with an R 2 value of 0.87. The study revealed that obtaining near real time chlorophyll content using high spatial resolution drone images is reliable and quick. This information is very helpful in generating the chlorophyll map, which helps regulate the nutrient requirements at spatial variability. near-infrared for visualization of Indices are defined as a ratio of the difference between the reflectance of different spectral bands, which provide different data layers these help in monitoring the crop growth as they can enhance the spectral differences at specific 7 . The index is a data processing method vegetation spectrum information by using different linear combinations of the ratio between the visible and near-infrared fundamental for is that plant has a high sensitivity to the visible and near-infrared wavelengths, and the combination of these two bands is very effective. They strengthen the information about closed vegetation. very and values in some of the that it is sensitive to non-photosynthetic materials and properties the red edge values are higher values some","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"25 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83293355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Set cover model-based optimum location of electric vehicle charging stations","authors":"Binal Vansola, Minal ., R. Shukla","doi":"10.18520/cs/v123/i12/1448-1454","DOIUrl":"https://doi.org/10.18520/cs/v123/i12/1448-1454","url":null,"abstract":"","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"120 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80555783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Digital transformation for sustainable agriculture: a progressive method for smallholder farmers","authors":"B. Satpathy","doi":"10.18520/cs/v123/i12/1436-1440","DOIUrl":"https://doi.org/10.18520/cs/v123/i12/1436-1440","url":null,"abstract":"","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"16 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82816252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New records, rare and noteworthy species of the genus Nowakowskiella (Nowakow­skiellaceae, Chytridiomycota) from India","authors":"M. Dubey, M. Gajbhiye, R. Upadhyay","doi":"10.18520/cs/v123/i12/1462-1472","DOIUrl":"https://doi.org/10.18520/cs/v123/i12/1462-1472","url":null,"abstract":"s Six species of the genus Nowakowskiella (Nowakowskiellaceae, Chytridiomycota), specifically Nowakowskiella elegans, N. hemisphaerospora, N. profusa, N. multispora, N. ramosa and N. macrospora as well as one variety N. multispora var. longa are described herein from India. N. hemisphaerospora and N. macrospora are reported as new records for India. This increases the number of Nowakowskiella species known from India to seven. Nowakowskiella multispora var. longa is rarely reported in the world and in the past has been recorded only from Poland and India. All these species along with a variety are illustrated with the help of light micrographs and compared with other similar species. Morphological descriptions, illustrations, distribution and comments of these examined species are presented. Besides, we analysed nu-rRNA gene sequences (partial LSU) of six Nowakowskiella isolates from Indian aquatic and soil samples. A synopsis of the characters to all these investigated species based on morphological characters are provided in this study to differentiate them.","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"5 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88807142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successful separation and detection of gold sulphide in ore samples from the banded iron formation of Goa, India","authors":"Sujata Dabolkar, Nandkumar Kamat","doi":"10.18520/cs/v123/i11/1390-1393","DOIUrl":"https://doi.org/10.18520/cs/v123/i11/1390-1393","url":null,"abstract":".","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"24 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76207504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of watershed management ecosystem services in India: a meta-analysis","authors":"D. Meena, S. Pal, P. Chand","doi":"10.18520/cs/v123/i11/1352-1358","DOIUrl":"https://doi.org/10.18520/cs/v123/i11/1352-1358","url":null,"abstract":"Besides increasing agricultural productivity, well-develo-ped watersheds have immense potential to minimize land degradation, mitigating the adverse impact of climate change and generating several other ecosystem services (ES). Quantifying these services is quintessential in ope-rationalizing the concept of management and decision-making relating to watershed management. The present study estimates the value of regulating (soil conservation and carbon sequestration) and supporting ES (ground-water recharge) generated by watersheds in India, and examines the factors that influence the flow of ES from watersheds. The study followed a meta-analysis approach using information from 221 watersheds in 5 major agro-climatic zones of the country. We found that the watershed generates ES to the tune of Rs 34,113 per ha, with water recharging alone accounting for 60% of it. It shows that people’s participation in the planning, implementation and management of watersheds significantly enhan-ces ES. Macro-watersheds ( ≥ 1000 ha) are more effective in generating ES, underscoring the need for investment in watersheds management in the semi-arid tropical regions, where problems of degradation of natural resources are more pronounced. This study suggests policies for land restoration and payment for ES to increase their flow.","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"45 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84933707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sāncipāt: a popular manuscript writing base of early Assam, North East India","authors":"A. A. Ali, Barsha R. Goswami, Niranjan Ligira, R. K. Dutta","doi":"10.18520/cs/v123/i11/1359-1364","DOIUrl":"https://doi.org/10.18520/cs/v123/i11/1359-1364","url":null,"abstract":"Sāncipāt was a popular manuscript writing base of early and medieval Assam, North East India. Tens of thousands of Sāncipāt manuscripts still exist in the state, some of them centuries old, without fading ink and min-iature painting despite its harsh hot and humid climate. Traditionally, Sāncipāt was made from the bark of the Sānci tree using an arduous procedure. In this study, we analysed the physico-chemical proper ties of the traditionally prepared model and old Sāncipāt folios at different stages of preparation using FT-IR, XRD and SEM-EDX spectra, weight loss during degumming, tensile strength, gloss index and antifungal properties. A comparison of data with freshly prepared Sāncipāt folios showed intact internal structure and str ength in the old ones. The antifungal property obser ved in Sāncipāt is attributed to Tutia used during degumming of the bark, and two pigments, viz., Hengul and Hāitāl applied as thin coating and border respectively. Partial degumming, coating with fatty pulse, application of Hāitāl and Hengul, and repeated pressing, smoothening and drying together impart strength and glossiness to Sāncipāt manuscripts.","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"201 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84308661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mineralogical characterization of raw materials from Dholavira, Gujarat, India and its geological and archaeological significance","authors":"R. Prasad, V. Prabhakar","doi":"10.18520/cs/v123/i11/1341-1351","DOIUrl":"https://doi.org/10.18520/cs/v123/i11/1341-1351","url":null,"abstract":"Dholavira was one among the five largest settlements (probably six) of the Harappan civilization during the third millennium BCE . The location of this site in a desolate corner of Khadir Island in Kachchh, Gujarat, India, speaks well of the planning and ingenuity showed by the Harappans for making it an urban and adminis-trative centre. Excavations at this site between 1989 and 2005 brought to light a long and continuous occupation of nearly 1500 years ( c . 3000–1500 BCE ), which records the rise, culmination and fall of the Harappan Civilization. Evidences for various craft activities are found from the earliest levels onwards and the Harappans exploited various lithic raw materials for both utilitarian purposes and making ornaments. Kachhch and the Gujarat mainland are rich in raw material resources in general and agate–carnelian, limestone, various types of clay, copper–lead–silver and steatite, in particular. Dholavira contains both raw materials and finished artefacts, thus presents an ideal scenario to study. In the present study, we interpret the mineralogical characterization and probable provenance of the raw materials from different spatio-temporal contexts at the Dholavira site using techniques like XRD and SEM-EDS analysis. Samples of clay, stone raw materials and a few artefacts were selected from among the innumerable resources available at the site.","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"57 8 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77568744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Limb regeneration modulates reproductive attributes in ladybirds in Propylea dissecta and Coccinella septempunctata","authors":"S. Saxena, G. Mishra, O. .","doi":"10.18520/cs/v123/i11/1387-1390","DOIUrl":"https://doi.org/10.18520/cs/v123/i11/1387-1390","url":null,"abstract":"In holometabolous insects, adult develops through larval and pupal stages. Limb regeneration has an impact on different life traits of organisms. In the present study, we found that limb regeneration of two ladybird species of different body size affected their life attributes. The fourth instar of Propylea dissecta and ladybird Coccinella septempunctata were taken from laboratory stock and ablated. Larvae were observed until adult emergence. Emerged adults were kept in different mating treatments. Unregenerated adults of ladybirds took more time to commence mating with shorter copulation and reduced fecundity and per cent viability. Thus, it can be concluded that regeneration ability modulates life attributes of ladybirds, irrespective of body size.","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"6 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83043272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bacterial and fungal diversity in the rhizosphere of buckwheat under different mul­ching techniques","authors":"Dongsheng Wang, Pengyan Han, Haike Ren, Wen-sen Lin, Jing Chen","doi":"10.18520/cs/v123/i11/1365-1371","DOIUrl":"https://doi.org/10.18520/cs/v123/i11/1365-1371","url":null,"abstract":"","PeriodicalId":11194,"journal":{"name":"Current Science","volume":"133 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86328869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}