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deep convolutional neural network models for weed detection in polyhouse grown bell peppers

Artificial Intelligence in Agriculture 2022年第1期6卷 47-54页

作者： A.Subeesh S.Bhole K.Singh N.S.Chandel Y.A.Rajwade K.V.R.Rao S.P.Kumar d.jat ICAR-Central Institute of Agricultural Engineering(CIAE) BhopalMadhya PradeshIndia

Conventional weed management approaches are inefficient and non-suitable for integration with smart agricultural *** identification and classification of weeds can play a vital role in weed management contributing to better crop *** and smart spot-spraying system's efficiency relies on the accuracy of the computer vision based detectors for autonomous weed *** the present study,feasibility of deep learning based techniques(Alexnet,GoogLeNet,InceptionV3,Xception)were evaluated in weed identification from RGB images of bell pepper *** models were trained with different values of epochs(10,20,30),batch sizes(16,32),and hyperparameters were tuned to get optimal *** overall accuracy of the selected models varied from 94.5 to 97.7%.Among the models,InceptionV3 exhibited superior performance at 30-epoch and 16-batch size with a 97.7%accuracy,98.5%precision,and 97.8%*** this Inception3 model,the type 1 error was obtained as 1.4%and type II error was 0.9%.The effectiveness of the deep learning model presents a clear path towards integrating them with image-based herbicide applicators for precise weed management.

关键词： Bell pepper Computer vision Convolutional neural networks deep learning Weed identification

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Long-Term Conservation Agriculture and Intensified Cropping Systems:Effects on Growth,Yield,Water,and Energy-use Efficiency of Maize in Northwestern India

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Pedosphere 2018年第6期28卷 952-963页

作者： Chiter M.PARIHAR Malu R.YAdAV Shankar L.jat Aditya K.SINGH Bhupender KUMAR Vijay POONIYA Sanatan PRAdHAN Rakesh K.VERMA Mangi L.jat Raj K.jat Muli d.PARIHAR Hari S.NAYAK Yashpal S.SAHARAWAT Indian Council of Agricultural Research-Indian Institute of Maize Research New Delhi 110012(India) Indian Council of Agricultural Research-Indian Agricultural Research Institute New Delhi 110012(India) International Maize and Wheat Improvement Center New Delhi 110012(India) Borlaug Institute for South Asia Samastipur 848125(India) Chaudhary Charan Singh Haryana Agricultural University Hisar 125004(India) International Center for Agricultural Research in the dry Areas Kabul 11082010(Afghanistan)

Conservation agriculture(CA)-based best-bet crop management practices may increase crop and water productivity, while conserving and sustaining natural resources. We evaluated the performance of rainy season maize during 2014 under an ongoing long-term trial(established in 2008) with three tillage practices, i.e., permanent bed(PB), zero tillage(ZT), and conventional tillage(CT) as main plots, and four intensified maize-based cropping systems, i.e., maize-wheat-mungbean, maize-chickpea-Sesbania(MCS), maizemustard-mungbean, and maize-maize-Sesbania) as subplot treatments. In the seventh rainy season of the experiment, maize growth parameters, yield attributes, yield, and water-and energy-use efficiency were highest at fixed plots under ZT. Maize growth parameters were significantly(P der ZT and PB compared with CT. Maize yield attributes, including cobs per m^2(7.8), cob length(0.183 m), grain rows per cob(13.8), and grains per row(35.6), were significantly higher under ZT than CT; however, no significant effect of cropping systems was found on maize growth and yield attributes. Zero tillage exhibited the highest maize productivity(4 589 kg ha^(-1)). However, among the cropping systems, MCS exhibited the highest maize productivity(4 582 kg ha^(-1)). In maize, water use was reduced by 80.2–120.9 mm ha-1under ZT and PB compared with CT, which ultimately enhanced the economic water-use efficiency by 42.0% and 36.6%, respectively. The ZT and PB showed a 3.5%–31.8% increase in soil organic carbon(SOC) at different soil depths(0–0.45 m), and a 32.3%–39.9% increase in energy productivity compared with CT. Overall, our results showed that CA-based ZT and PB practices coupled with diversified maize-based cropping systems effectively enhanced maize yield and SOC,as well as water-and energy-use efficiency, in northwestern India.

关键词： conventional tillage economic water-use efficiency permanent bed rainy season soil organic carbon zero tillage

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Application of Synthetic Iron Oxyhydroxide with Influencing Factors for Removal of As(Ⅴ) and As(Ⅲ) from Groundwater

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Journal of Earth Science 2024年第3期35卷 998-1009页

作者： Shakeel Ahmed Talpur Muhammad Yousuf jat Baloch Chunli Su Javed Iqbal Aziz Ahmed Hafeez Ahmed Talpur School of Environmental Studies China University of GeosciencesWuhan 430078China diSPUTer Department of PsychologicalHealth and Territory SciencesUniversity“G.d′Annunzio”Chieti-Pescara66100 ChietiItaly College of New Energy and Environment Jilin UniversityChangchun 130021China School of Plant Environment and Soil SciencesLouisiana State University Agricultural CentreBaton Rouge LA 70803USA department od Engineering and Geology University“G.d′Annunzio”Chieti-Pescara66100 ChietiItaly

Synthesized iron oxyhydroxide was applied for the adsorptive removal of As(V)and As(III)from the aquas ***,this investigation highlighted the synergistic effect of calcium carbonate in conjunction with iron oxyhydroxide,resulting in enhanced removal *** experiment was conducted under various conditions:concentration,dosage,pH,agitation,and *** characterizations such as Brunauer Emmett Teller,X-ray diffraction,scanning electron microscopy,and Fourier transform infrared spectroscopy were implied to understand adsorption *** Langmuir model revealed optimal concentrations for As(V)=500μg/L at pH-5 and As(III)=200μg/L at pH-7,resulting in 95%and 93%adsorption efficiencies,*** adsorption capacities“qm”were found to be 1266.943μg/g for As(V)and 1080.241μg/g for As(III).Freundlich model demonstrated favorable adsorption by indicating“n>1”such as As(V)=2.542 and As(III)=2.707;similarly,the speciation factor“RLd As(III)=0.5,*** kinetic study presented a pseudo-second-order model as best fitted,indicating throughout chemisorption processes for removing As(V)and As(III).Furthermore,incorporating calcium carbonate presented a significant leap in the removal efficiency,indicating As(V)from 95%to 98%and As(III)from 93%to 96%,*** findings offer profound motivation for developing effective and sustainable solutions to tackle arsenic contamination,underscoring the exceptional promise of iron oxyhydroxide in conjunction with calcium carbonate to achieve maximum removal efficiency.

关键词： adsorption arsenic As(V) As(III) iron oxyhydroxide isotherms kinetics groundwater.

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Heat inactivation of the severe acute respiratory syndrome coronavirus 2

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Journal of Biosafety and Biosecurity 2021年第1期3卷 1-3页

作者： Christophe Batéjat Quentin Grassin Jean-Claude Manuguerra India Leclercq Institut Pasteur UnitéEnvironnement et Risques InfectieuxCellule d’Intervention Biologique d’Urgence(CIBU)28 rue du Dr.RouxParisFrance Universitéde Paris Cellule Pasteur28 rue du Dr.Roux F-75015 ParisFrance

Cell culture medium,nasopharyngeal and sera samples spiked with SARS-CoV-2 were subjected to heat inactivation for various periods of time,ranging from 30 s to 60 *** results showed that SARS-CoV-2 could be inactivated in less than 30 min,15 min,and 3 min at 56℃,65℃,and 95℃,*** data could help laboratory workers to improve their protocols by handling the virus in biosafety conditions.

关键词： Heat Inactivation SARS-CoV-2 Covid-19

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Heat inactivation of monkeypox virus

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Journal of Biosafety and Biosecurity 2022年第2期4卷 121-123页

作者： Christophe Batéjat Quentin Grassin Maxence Feher damien Hoinard Jessica Vanhomwegen Jean-Claude Manuguerra India Leclercq Institut Pasteur Université Paris CitéUnité Environnement et Risques InfectieuxCellule d’Intervention Biologique d’Urgence(CIBU)F-75015 ParisFrance

different kinds of media spiked with monkeypox virus(MPXV)were subjected to heat inactivation at different temperatures for various periods of *** results showed that MPXV was inactivated in less than 5 min at 70℃and less than 15 min at 60℃,with no difference between viruses from the West African and Central African *** present findings could help laboratory workers to manipulate MPXV in optimal biosafety conditions and improve their protocols.

关键词： Inactivation Monkeypoxvirus Heat Virus

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