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 Livestock, Forage and Pasture Management Research Unit: El Reno, OK
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ARS Home Plains Area El Reno, Oklahoma Oklahoma and Central Plains Agricultural Research Center Livestock, Forage and Pasture Management Research Unit People







Pradeep  Wagle    Soil Scientist /ARSUserFiles/52168/Employee Pic/Wagle Pic.jpg
**Dr. Pradeep Wagle**
*********Research Ecologist*********
**USDA-ARS Grazinglands Research Laboratory**
**7207 West Cheyenne Street****El Reno OK 73036**
**Voice: 1-(405)-262-5291**
**Fax: 1-(405)-262-0133**
**Pradeep.Wagle@usda.gov** ***Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)Impact of variable weather on vegetation phenology and eddy fluxes in tallgrass prairie-(Peer Reviewed Journal) Wagle, P., Northup, B.K., Moffet, C., Gunter, S.A. 2024. Impact of variable weather on vegetation phenology and eddy fluxes in tallgrass prairie. Rangeland Ecology and Management. 94:215-225. https://doi.org/10.1016/j.rama.2024.03.011.A comparison of moderate and high spatial resolution satellite data for modeling gross primary production and transpiration of native prairie, alfalfa, and winter wheat-(Peer Reviewed Journal) Celis, J., Xiao, X., Wagle, P., Basara, J., Mccarthy, H., Souza, L. 2023. A comparison of moderate and high spatial resolution satellite data for modeling gross primary production and transpiration of native prairie, alfalfa, and winter wheat. Agricultural and Forest Meteorology. 344:Article 109797. https://doi.org/10.1016/j.agrformet.2023.109797.Biophysical feedback of grassland-cropland conversion on regional climate in the U.S. Great Plains-(Abstract Only)Land use conversion increases the network complexity and stability of soil microbial communities in a temperate grassland-(Peer Reviewed Journal) Cornell, C.R., Zhang, Y., Ning, D., Xiao, N., Wagle, P., Xiao, X., Zhou, J. 2023. Land use conversion increases the network complexity and stability of soil microbial communities in a temperate grassland. Journal of the International Society for Microbial Ecology. Available: https://doi.org/10.1038/s41396-023-01521-x.Partitioning of evapotranspiration in C3-C4 mixed tallgrass prairies using FVS, MREA, and CEC methods-(Abstract Only)Climate and management practices jointly control vegetation phenology in native and introduced prairie pastures-(Peer Reviewed Journal) Zhou, Y., Ma, S., Wagle, P., Gowda, P.H. 2023. Climate and management practices jointly control vegetation phenology in native and introduced prairie pastures. Remote Sensing. 15(10):2529. https://doi.org/10.3390/rs15102529.Simple and innovative methods to estimate gross primary production and transpiration of crops: A short review-(Book / Chapter) Celis, J., Xiao, X., Basara, J., Wagle, P., and McCarthy, H. 2023. Simple and innovative methods to estimate gross primary production and transpiration of crops: A review. In: Chaudhary, S., Biradar, C.M., Divakaran, S., Raval, M.S. (eds). Digital Ecosystem for Innovation in Agriculture. Studies in Big Data. Vol. 121. Singapore:Springer. p. 125-156. https://doi.org/10.1007/978-981-99-0577-5_7.Cooling effects of increased green fodder area on native grassland in the northeastern Tibetan Plateau-(Peer Reviewed Journal) Liu, W., Zhou, Y., Dong, J., Zhang, G., Yang, T., You, N., Flynn, K.C., Wagle, P., Yang, H. 2023. Cooling effects of increased green fodder area on native grassland in the northeastern Tibetan Plateau. Environmental Research Letters. 18(6). Article 064006. https://doi.org/10.1088/1748-9326/acc9d3.Eddy covariance assessment of alternate wetting and drying floodwater management on rice methane emissions-(Peer Reviewed Journal) Anapalli, S.S., Pinnamaneni, S.R., Reddy, K.N., Wagle, P., Ashworth, A.J. 2023. Eddy covariance assessment of alternate wetting and drying floodwater management on rice methane emissions. Heliyon. 9(4):e14696. https://doi.org/10.1016/j.heliyon.2023.e14696.Intensification differentially affects the delivery of multiple ecosystem services in subtropical and temperate grasslands-(Peer Reviewed Journal) Paudel, S., Boughton, E., Gomez-Casanovas, N., Chamberlain, S., Wagle, P., Peterson-Munks, B.L., Bajgain, R., Starks, P.J., Basara, J., Bernacchi, C.J., Delucia, E., Goodman, L., Gowda, P.H., Reuter, R., Sparks, J., Swain, H., Xiangming, X., Steiner, J. 2023. Intensification differentially affects the delivery of multiple ecosystem services in subtropical and temperate grasslands. Agriculture, Ecosystems and Environment. 348. https://doi.org/10.1016/j.agee.2023.108398.Indicators of water use efficiency across diverse agroecosystems and spatiotemporal scales-(Peer Reviewed Journal) Hoover, D.L., Abendroth, L.J., Browning, D.M., Saha, A., Snyder, K.A., Wagle, P., Witthaus, L.M., Baffaut, C., Biederman, J.A., Bosch, D.D., Bracho, R., Busch, D., Clark, P., Ellsworth, P.Z., Fay, P.A., Flerchinger, G.N., Kearney, S.P., Levers, L.R., Saliendra, N.Z., Schmer, M.R., Schomberg, H.H., Scott, R.L. 2022. Indicators of water use efficiency across diverse agroecosystems and spatiotemporal scales. Science of the Total Environment. 864. Article e160992. https://doi.org/10.1016/j.scitotenv.2022.160992.Influence of water use efficiency parameterizations on flux variance similarity-based partitioning of evapotranspiration-(Peer Reviewed Journal) Wagle, P., Raghav, P., Kumar, M., Gunter, S.A. 2022. Influence of water use efficiency parameterizations on flux variance similarity-based partitioning of evapotranspiration. Water Resources Research. 328. Article 109254. https://doi.org/10.1016/j.agrformet.2022.109254.Sensitivity of water use efficiency parameterizations on flux variance similarity-based partitioning of evapotranspiration-(Abstract Only)Satellite-based modeling of gross primary production of C3 fields with time series of Landsat and Sentinel-2 images-(Abstract Only)Detecting frequent harvest of alfalfa with spatio-temporal fused data-(Abstract Only)Interacting effects of botanicals, biocontrol agents, and potting media on Rhizoctonia solani led damping-off of okra seedlings-(Peer Reviewed Journal) Bhattarai, A., Sharma, A., Yadav, R.K., Wagle, P. 2022. Interacting effects of botanicals, biocontrol agents, and potting media on Rhizoctonia solani led damping-off of okra seedlings. Journal of Agriculture and Food Research. 10. Article 100410.. https://doi.org/10.1016/j.jafr.2022.100410.Unraveling the effects of management and climate on carbon fluxes of U.S. croplands using the USDA Long-Term Agroecosystem (LTAR) network-(Peer Reviewed Journal) Menefee, D.S., Scott, R.L., Abraha, M., Alfieri, J.G., Baker, J.M., Browning, D.M., Chen, J., Gonet, J.M., Johnson, J.M., Miller, G.R., Nifong, R.L., Robertson, P., Russel, E.R., Saliendra, N.Z., Schreiner-Mcgraw, A.P., Suyker, A., Wagle, P., Wente, C.D., White Jr, P.M., Smith, D.R. 2022. Unraveling the effects of management and climate on carbon fluxes of U.S. croplands using the USDA Long-Term Agroecosystem (LTAR) network. Agricultural and Forest Meteorology. 326. Article 109154. https://doi.org/10.1016/j.agrformet.2022.109154.Vegetation index-based partitioning of evapotranspiration is deficient in grazed systems-(Peer Reviewed Journal) Raghav, P., Wagle, P., Kumar, M., Banerjee, T., Neel, J.P. 2022. Vegetation index-based partitioning of evapotranspiration is deficient in grazed systems. Water Resources Research. 58(8):e2022WR032067. https://doi.org/10.1029/2022WR032067.Dormant season vegetation phenology and eddy fluxes in native tallgrass prairies of the U.S. Southern Plains-(Peer Reviewed Journal) Wagle, P., Kakani, V.G., Gowda, P.H., Xiao, X., Northup, B.K., Neel, J.P., Starks, P.J., Steiner, J.L., Gunter, S. 2022. Dormant season vegetation phenology and eddy fluxes in native tallgrass prairies of the U.S. Southern Plains. Remote Sensing. 14(11). Article 2620. https://doi.org/10.3390/rs14112620.Assimilating remote sensing-based VPM GPP into the WOFOST model for improving regional winter wheat yield estimation-(Peer Reviewed Journal) Zhuo, W., Huang, J., Xiao, X., Huang, H., Bajgain, R., Wu, X., Gao, X., Wang, J., Su, W., Zhang, X., Wagle, P. 2022. Assimilating remote sensing-based VPM GPP into the WOFOST model for improving regional winter wheat yield estimation. European Journal of Agronomy. 139. Article 126556. https://doi.org/10.1016/j.eja.2022.126556.Temporal dynamics of bacterial communities along a gradient of disturbance in a U.S. Southern Plains agroecosystem-(Peer Reviewed Journal) Cornell, C., Zhang, Y., Ning, D., Wu, L., Wagle, P., Steiner, J., Xiao, X., Zhou, J. 2022. Temporal dynamics of bacterial communities along a gradient of disturbance in a U.S. Southern Plains agroecosystem. mSphere. 6. Article e01160-20. https://doi.org/10.1128/mSphere.01160-20.Monitoring climate impacts on annual forage production across U.S. semi-arid grasslands-(Peer Reviewed Journal) Podebradska, M., Wylie, B.K., Bathke, D.J., Bayissa, Y.A., Dahal, D., Derner, J.D., Fay, P.A., Hayes, M.J., Wagle, P. 2021. Monitoring climate impacts on annual forage production across U.S. semi-arid grasslands. Remote Sensing. 14(1). Article 4. https://doi.org/10.3390/rs14010004.Ecosystem-level water use efficiency and evapotranspiration partitioning in Canola-(Abstract Only) Wagle, P., Gowda, P.H., Northup, B.K., Neel, J.P. 2021. Ecosystem-level water use efficiency and evapotranspiration partitioning in Canola [abstract]. American Geophysical Union Fall Meeting, December 13-17, 2021, New Orleans, Louisana. Available: https://ui.adsabs.harvard.edu/abs/2021AGUFM.B15D1464W/abstract.The potential of active and passive remote sensing to detect frequent harvesting of alfalfa-(Peer Reviewed Journal) Zhou, Y., Flynn, K.C., Gowda, P.H., Wagle, P., Ma, S., Kakani, V.G., Steiner, J.L. 2021. The potential of active and passive remote sensing to detect frequent harvesting of alfalfa. International Journal of Applied Earth Observation and Geoinformation. 104. Article 102539. https://doi.org/10.1016/j.jag.2021.102539.Carbon dioxide and water vapor fluxes of multi-purpose winter wheat cropping systems in the U.S. Southern Great Plains-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Northup, B.K., Neel, J.P., Starks, P.J., Turner, K.E., Moriasi, D.N. 2021. Carbon dioxide and water vapor fluxes of multi-purpose winter wheat cropping systems in the U.S. Southern Great Plains. Agricultural and Forest Meteorology. 310:108631. https://doi.org/10.1016/j.agrformet.2021.108631.Improving a biogeochemical model to simulate microbial-mediated carbon dynamics in agricultural ecosystems-(Peer Reviewed Journal) Deng, J., Frolking, S., Bajgain, R., Cornell, C., Wagle, P., Xiao, X., Zhou, J., Basara, J., Steiner, J.L., Changsheng, L. 2021. Improving a biogeochemical model to simulate microbial-mediated carbon dynamics in agricultural ecosystems. Journal of Advances in Modeling Earth Systems. 13. Article e2021MS002752.Recent advances in remote sensing of evapotranspiration-(Peer Reviewed Journal) Bhattarai, N., Wagle, P. 2021. Recent advances in remote sensing of evapotranspiration. Remote Sensing. 13(21). Article 4260Interannual variability seasonal dynamics of evapotranspiration of Arundo donax L. and populations of its biological control agent.-(Peer Reviewed Journal) Racelis, A., Wagle, P., Escamilla, J., Goolsby, J., Gowda, P.H. 2022. Interannual variability seasonal dynamics of evapotranspiration of Arundo donax L. and populations of its biological control agent.. Ecohydrology & Hydrobiology. 22(1):178-187.Temporal changes of virus-like particle abundance in cropland and prairie soils-(Peer Reviewed Journal) Cornell, C., Zhang, Y., Van Nostrand, J., Wagle, P., Xiao, X., Jizhong, Z. 2021. Temporal changes of virus-like particle abundance in cropland and prairie soils. mSphere. 6(3). Article e01160-20.Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain crops-(Peer Reviewed Journal) Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P., Anderson, R.G. 2021. Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain crops. Water Resources Research. 57. Article e2020WR028866. https://doi.org/10.1029/2020WR028866.Ecosystem-level water use efficiency and evapotranspiration partitioning in conventional till and no-till rainfed canola-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Northup, B.K., Neel, J.P. 2021. Ecosystem-level water use efficiency and evapotranspiration partitioning in conventional till and no-till rainfed canola. Agricultural Water Management. 250:106825. https://doi.org/10.1016/j.agwat.2021.106825.Sensitivity of reference evapotranspiration to weather variables across seven regions of Turkey-(Peer Reviewed Journal) Yildirim, T., Wagle, P., Gowda, P.H., Mengu, G. 2021. Sensitivity of reference evapotranspiration to weather variables across seven regions of Turkey. Agrosystems, Geosciences & Environment. 4(2). Article e20155. https://doi.org/10.1002/agg2.20155.Comparing evapotranspiration products of different temporal and spatial scales in native and managed prairie pastures-(Peer Reviewed Journal) Bajgain, R., Xiangming, X., Wagle, P., Kimball, J., Brust, C., Basara, J., Gowda, P.H., Starks, P.J., Neel, J.P. 2020. Comparing evapotranspiration products of different temporal and spatial scales in native and managed prairie pastures. Remote Sensing. 82(13). https://doi.org/10.3390/rs13010082.Modeling evapotranspiration of winter wheat using contextual and pixel-based surface energy balance models-(Peer Reviewed Journal) Khand, K., Bhattarai, N., Taghvaeian, S., Wagle, P., Gowda, P.H., Alderman, P. 2021. Modeling evapotranspiration of winter wheat using contextual and pixel-based surface energy balance models. Transactions of the ASABE. 64(2):507-519. https://doi.org/10.13031/trans.14087.Varietal evaluation of promising maize genotypes in mid hills of Nepal-(Peer Reviewed Journal) Neupane, B., Poudel, A., Wagle, P. 2020. Varietal evaluation of promising maize genotypes in mid hills of Nepal. Texas Journal of Agriculture and Natural Resources. 3(2):127-139. https://doi.org/10.3126/janr.v3i2.32491.Detecting frequent harvesting of alfalfa using active and passive remote sensing-(Abstract Only) Zhou, Y., Flynn, K.C., Gowda, P.H., Wagle, P., Ma, S., Kakani, V.G., Steiner, J.L. 2020. Detecting frequent harvesting of alfalfa using active and passive remote sensing. American Geophysical Union Annual Meeting, December 9-13, 2020, Virtual.Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain groups-(Abstract Only) Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P., Anderson, R.G. 2020. Evaluation of water use efficiency algorithms for flux variance similarity-based evapotranspiration partitioning in C3 and C4 grain groups. American Geophysical Union. https://agu.confex.com/agu/fm20/meetingapp.cgi/Paper/667569.Comparison of evapotranspiration and biomass simulation in winter wheat under conventional and conservation tillage systems using APEX model-(Peer Reviewed Journal) Tadesse, H.K., Moriasi, D.N., Gowda, P.H., Wagle, P., Starks, P.J., Steiner, J.L., Talebizadeh, M., Neel, J.P., Nelson, A.M. 2020. Comparison of evapotranspiration and biomass simulation in winter wheat under conventional and conservation tillage systems using APEX model. Ecohydrology & Hydrobiology. https://doi.org/10.1016/j.ecohyd.2020.08.003.Differential responses of native and managed prairie pastures to environmental variability and management practices-(Peer Reviewed Journal) Bajgain, R., Xiao, X., Basara, J., Doughty, R., Wu, X., Wagle, P., Zhou, Y., Gowda, P.H., Steiner, J.L. 2020. Differential responses of native and managed prairie pastures to environmental variability and management practices. Agricultural and Forest Meteorology. 294. https://doi.org/10.1016/j.agrformet.2020.108137.Canopy temperature depression and normalized difference vegetation index as indicators of drought resistance and nitrogen recommendation in hybrid maize genotypes-(Peer Reviewed Journal) Neupane, B., Poudel, A., Wagle, P. 2020. Canopy temperature depression and normalized difference vegetation index as indicators of drought resistance and nitrogen recommendation in hybrid maize genotypes. Azarian Journal of Agriculture. 7(3):69-75. https://dx.doi.org/10.29252/azarinj.031.Dynamics of CO2 and H2O fluxes in Johnson grass in the U.S. Southern Great Plains-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Billesbach, D., Northup, B.K., Torn, M., Neel, J.P., Biraud, S. 2020. Dynamics of CO2 and H2O fluxes in Johnson grass in the U.S. Southern Great Plains. Science of the Total Environment. 739:140077. https://doi.org/10.1016/j.scitotenv.2020.140077.Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data-(Abstract Only) Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P. 2020. Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data. NAPA Conference 2020 Second Biennial Conference. September 25-28, 2020. Absract No. 104. Available: https://www.napaamericas.org/proceedings.php.Varietal evaluation of promising maize genotypes in mid hills of Nepal-(Abstract Only) Neupane, B., Poudel, A., Wagle, P. 2020. Varietal evaluation of promising maize genotypes in mid hills of Nepal. NAPA Conference 2020 Second Biennial Conference. September 25-28, 2020. Poster No 138. Available: https://www.napaamericas.org/proceedings.php.Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data-(Peer Reviewed Journal) Wagle, P., Skaggs, T.H., Gowda, P.H., Northup, B.K., Neel, J.P. 2020. Flux variance similarity-based partitioning of evapotranspiration over a rainfed alfalfa field using high frequency eddy covariance data. Agricultural and Forest Meteorology. Vol. 285-286. https://doi.org/10.1016/j.agrformet.2020.107907.Integrating eddy fluxes and remote sensing products in a rotational grazing native tallgrass prairie pasture-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Neel, J.P., Northup, B.K., Zhou, Y. 2020. Integrating eddy fluxes and remote sensing products in a rotational grazing native tallgrass prairie pasture. Science of the Total Environment. 712:136407. https://doi.org/10.1016/j.scitotenv.2019.136407.Retrospective tillage differentiation using the landsat-5 TM archive with discriminant analysis-(Peer Reviewed Journal) Sharma, S., Dhakal, K., Wagle, P., Kilic, A. 2020. Retrospective tillage differentiation using the landsat-5 TM archive with discriminant analysis. Agrosystems, Geosciences & Environment. 3(1). https://doi.org/10.1002/agg2.20000.Burning and climate interactions determine impacts of grazing on tallgrass prairie systems-(Peer Reviewed Journal) Flynn, C.K., Zhou, Y., Gowda, P.H., Moffet, C., Wagle, P., Kakani, V.G. 2019. Burning and climate interactions determine impacts of grazing on tallgrass prairie systems. Rangeland Ecology and Management. 73(1):104-118. https://doi.org/10.1016/j.rama.2019.10.002.Response of tallgrass prairie to management in the U.S. Southern Great Plains: Site descriptions, management practices, and eddy covariance instrumentation for a long-term experiment-(Abstract Only) Wagle, P., Gowda, P.H., Northup, B.K., Starks, P.J., Neel, J.P. 2020. Response of tallgrass prairie to management in the U.S. Southern Great Plains: site descriptions, management practices, and eddy covariance instrumentation for a long-term experiment [abstract]. American Geophysical Union. https://doi.org/10.1002/essoar.10501817.1.Responses of ecosystem-atmosphere exchange to precipitation pulses in adjacent native and introduced prairie pastures-(Abstract Only) Flynn, C.K., Ma, S., Wagle, P., Zhou, Y., Gowda, P.H., Starks, P.J., Bajgain, R., Xiao, X., Basara, J.B., Steiner, J.L. 2019. Responses of ecosystem-atmosphere exchange to precipitation pulses in adjacent native and introduced prairie pastures [abstract]. American Geophysical Union. Available at: https://agu.confex.com/agu/fm19/meetingapp.cgi/Paper/523351.Variability in gross primary productivity of native and managed pastures to climatic variability and management practices-(Abstract Only) Bajgain, R., Xiao, X., Basara, J.B., Doughty, R., Wu, X., Wagle, P., Zhou, Y., Gowda, P.H., Steiner, J.L. 2019. Variability in gross primary productivity of native and managed pastures to climatic variability and management practices [abstract]. American Geophysical Union. Available at: https://agu.confex.com/agu/fm19/meetingapp.cgi/Paper/595544.Managing tallgrass prairies for productivity and ecological function: a long term grazing experiment in the Southern Great Plains, USA-(Abstract Only) Steiner, J.L., Starks, P.J., Neel, J.P., Northup, B.K., Turner, K.E., Gowda, P.H., Coleman, S., Brown, M., Zhou, Y., Wagle, P., Peterson-Munks, B.L., Xiao, X. 2019. Managing tallgrass prairies for productivity and ecological function: a long term grazing experiment in the Southern Great Plains, USA [abstract]. American Geophysical Union. Available at: https://agu.confex.com/agu/fm19/meetingapp.cgi/Paper/499288.Remote sensing of evapotranspiration (ET)-(Book / Chapter) Wagle, P., Gowda, P.H. 2019. Remote sensing of evapotranspiration (ET). Basel,Switzerland: MDPI. 252 p.Editorial for the special issue "remote sensing of evapotranspiration (ET)"-(Peer Reviewed Journal) Wagle, P., Gowda, P.H. 2019. Editorial for the special issue "remote sensing of evapotranspiration (ET)". Remote Sensing. 11(18). https://doi.org/10.3390/rs11182146.Response of tallgrass prairie to management in the U.S. Southern Great Plains: Site descriptions, management practices, and eddy covariance instrumentation for a long-term experiment-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Northup, B.K., Starks, P.J., Neel, J.P. 2019. Response of tallgrass prairie to management in the U.S. Southern Great Plains: Site descriptions, management practices, and eddy covariance instrumentation for a long-term experiment. Remote Sensing. 11(17):1988. https://doi.org/10.3390/rs11171988.Carbon and water dynamics in co-located winter wheat and canola fields in the U.S. Southern Great Plains-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Manjunatha, P., Northup, B.K., Rocateli, A., Taghvaeian, S. 2019. Carbon and water dynamics in co-located winter wheat and canola fields in the U.S. Southern Great Plains. Agricultural and Forest Meteorology. 279:107714. https://doi.org/10.1016/j.agrformet.2019.107714.Water, nutrient, and energy-use efficiencies of no-till rainfed cropping systems with or without residue retention in a semi-arid dryland area-(Peer Reviewed Journal) Amgain, L.P., Sharma, A.R., Timsina, J., Wagle, P. 2019. Water, nutrient, and energy-use efficiencies of no-till rainfed cropping systems with or without residue retention in a semi-arid dryland area. Global Journal of Agricultural and Allied Sciences. 1(1):30-42. https://doi.org/10.35251/gjaas.2019.004.Evapotranspiration and ecosystem water use efficiency of alfalfa under rainfed condition in the U.S. Southern Great Plains-(Abstract Only) Manjunatha, P., Wagle, P., Gowda, P.H. 2018. Evapotranspiration and ecosystem water use efficiency of alfalfa under rainfed condition in the U.S. Southern Great Plains [abstract]. American Geophysical Union. Available at: http://adsabs.harvard.edu/abs/2018AGUFM.B33I2802M.Dynamics of evapotranspiration over a non-irrigated alfalfa field in the Southern Great Plains of the United States-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Northup, B.K. 2019. Dynamics of evapotranspiration over a non-irrigated alfalfa field in the Southern Great Plains of the United States. Agricultural Water Management. 223:105727. https://doi.org/10.1016/j.agwat.2019.105727.Climate effects on tallgrass prairie responses to continuous and rotational grazing-(Peer Reviewed Journal) Zhou, Y., Gowda, P.H., Wagle, P., Ma, S., Neel, J.P., Kakani, V., Steiner, J.L. 2019. Climate effects on tallgrass prairie responses to continuous and rotational grazing. Agronomy. https://doi.org/10.3390/agronomy9050219.Tallgrass prairie responses to management practices and disturbances: a review-(Peer Reviewed Journal) Wagle, P., Gowda, P.H. 2018. Tallgrass prairie responses to management practices and disturbances: A review. Agronomy. 8(12):300. https://doi:10.3390/agronomy8120300.Annual dynamics of carbon dioxide fluxes over a rainfed alfalfa field in the U.S. Southern Great Plains-(Peer Reviewed Journal) Wagle, P., Gowda, P.H., Northup, B.K. 2018. Annual dynamics of carbon dioxide fluxes over a rainfed alfalfa field in the U.S. Southern Great Plains. Agricultural and Forest Meteorology. 265:208-217. https://doi.org/10.1016/j.agrformet.2018.11.022.Application of the water-related spectral reflectance indices: A review-(Peer Reviewed Journal) Ma, S., Zhou, Y., Gowda, P.H., Dong, J., Zhang, G., Kakani, V., Wagle, P., Chen, L., Flynn, K.C., Jiang, W. 2018. Application of the water-related spectral reflectance indices: a review. Ecological Indicators. 98:68-79. https://doi.org/10.1016/j.ecolind.2018.10.049.Evspotranspiration in winter wheat under different grazing and tillage practices in the southern great plains-(Abstract Only) Gowda, P.H., Wagle, P., Manjunatha, P., Northup, B.K., Turner, K.E., Neel, J.P., Steiner, J.L. 2018. Evspotranspiration in winter wheat under different grazing and tillage practices in the southern great plains [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Available at: https://scisoc.confex.com/scisoc/2017am/webprogram/Paper107451.html.Integrating eddy fluxes and multiple remote sensing products in a rotational grazing native pasture-(Abstract Only) Wagle, P., Zhou, Y., Gowda, P.H. 2018. Integrating eddy fluxes and multiple remote sensing products in a rotational grazing native pasture [abstract]. American Geophysical Union. Available at: http://adsabs.harvard.edu/abs/2018AGUFM.B33H2779W.Examine the impact of different managements on grassland productivity at global FLUXNET sites-(Abstract Only) Zhou, Y., Gowda, P.H., Wagle, P., Kakani, V.G., Yildirim, T. 2018. Examine the impact of different managements on grassland productivity at global FLUXNET sites [abstract]. American Geophysical Union. Available at: http://adsabs.harvard.edu/abs/2018AGUFM.B33H2774Z.Response of grassland phenology to burning and grazing in different climatic conditions in southern Oklahoma-(Abstract Only) Flynn, K., Zhou, Y., Moffet, C., Gowda, P.H., Wagle, P., Steiner, J.L. 2018. Response of grassland phenology to burning and grazing in different climatic conditions in southern Oklahoma [abstract]. American Geophysical Union. Available at: http://adsabs.harvard.edu/abs/2018AGUFM.B33H2777F.An eddy covariance quantification of soybean evapotranspiration in the Mississippi Delta-(Peer Reviewed Journal)Carbon dioxide and water vapor fluxes in winter wheat and tallgrass prairie in central Oklahoma-(Peer Reviewed Journal) Bajgain, R., Xiao, X., Basara, J., Wagle, P., Zhou, Y., Mahan, H., Gowda, P., Mccarthy, H., Northup, B.K., Neel, J.P., Steiner, J.L. 2018. Carbon dioxide and water vapor fluxes in winter wheat and tallgrass prairie in central Oklahoma. Science of the Total Environment. 644: 1511-1524. https://doi.org/10.1016/j.scitotenv.2018.07.010.Variability in carbon dioxide fluxes among six winter wheat paddocks managed under different tillage and grazing practices-(Peer Reviewed Journal) Wagle, P., Gowda, P., Northup, B.K., Turner, K.E., Neel, J.P., Manjunatha, P., Zhou, Y. 2018. Variability in carbon dioxide fluxes among six winter wheat paddocks managed under different tillage and grazing practices. Atmospheric Environment. 185:100-108. https://doi.org/10.1016/j.atmosenv.2018.05.003.Net ecosystem exchange of CO2 and H2O fluxes from irrigated grain sorghum and maize in the Texas High Plains-(Peer Reviewed Journal) Wagle, P., Gowda, P., Moorhead, J.E., Marek, G.W., Brauer, D.K. 2018. Net ecosystem exchange of CO2 and H2O fluxes from irrigated grain sorghum and maize in the Texas High Plains. Science of the Total Environment. 637-638:163-173. https://doi.org/10.1016/j.scitotenv.2018.05.018.Dynamics of CO2 fluxes and evapotranspiration in till and no-till canola-(Proceedings)Responses of gross primary production of grasslands and croplands under drought, pluvial, and irrigation conditions during 2010-2016, Oklahoma, USA-(Peer Reviewed Journal) Doughty, R., Xiao, X., Wu, X., Zhang, Y., Bajgain, R., Zhou, Y., Qin, Y., Zou, Z., Mccarthy, H., Friedman, J., Wagle, P., Basara, J., Steiner, J.L. 2018. Responses of gross primary production of grasslands and croplands under drought, pluvial, and irrigation conditions during 2010-2016, Oklahoma, USA. Agricultural Water Management. 204:47-59. https://doi.org/10.1016/j.agwat.2018.04.001.Responses of gross primary production of grasslands and croplands to drought and pluvial events and irrigation during 2010-2016, Oklahoma, USA-(Peer Reviewed Journal)Variability in carbon dioxide fluxes among six winter wheat paddocks managed under different tillage and grazing practices-(Abstract Only) Wagle, P., Gowda, P.H., Northup, B.K., Turner, K.E., Neel, J.P., Steiner, J.L., Manjunatha, P. 2018. Variability in carbon dioxide fluxes among six winter wheat paddocks managed under different tillage and grazing practices [abstract]. Association of Nepalese Agricultural Professionals of America (NAPA)Conference 2018. Available at: http://napaamericas.org/downloads/first-biennial-conference-proceedings-2018.pdf.Utility of remote sensing-based surface energy balance models to track water stress in rain-fed switchgrass under dry and wet conditions-(Peer Reviewed Journal) Bhattarai, N., Wagle, P., Gowda, P., Kakani, V. 2017. Utility of remote sensing-based surface energy balance models to track water stress in rain-fed switchgrass under dry and wet conditions. Journal of Photogrammetry and Remote Sensing. Available at: https://doi.org/10.1016/j.isprsjprs.2017.10.010.CO2 dynamics in winter wheat and canola under different management practices in the southern Great Plains-(Abstract Only) Wagle, P., Manjunatha, P., Gowda, P.H., Northup, B.K., Neel, J.P., Turner, K.E., Steiner, J.L. 2017. CO2 dynamics in winter wheat and canola under different management practices in the southern Great Plains [abstract]. American Geophysical Union. Available at: http://adsabs.harvard.edu/abs/2017AGUFM.B11E1703W.Evapotranspiration in winter wheat under different grazing and tillage practices in the southern Great Plains-(Abstract Only) Gowda, P., Wagle, P., Manjunatha, P., Northup, B.K., Turner, K.E., Neel, J.P., Steiner, J.L. 2017. Evapotranspiration in winter wheat under different grazing and tillage practices in the southern Great Plains [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Available at: https://scisoc.confex.com/crops/2017am/webprogram/Paper107451.html.Quantifying agricultural drought in tallgrass prairie region in the U.S. Southern Great Plains through analysis of a water-related vegetation index from MODIS images-(Peer Reviewed Journal) Zhou, Y., Xiao, X., Zhang, G., Wagle, P., Bajgain, R., Dong, J., Jin, C., Basara, J., Anderson, M.C., Hain, C., Otkin 2017. Quantifying agricultural drought in tallgrass prairie region in the U.S. Southern Great Plains through analysis of a water-related vegetation index from MODIS images. Agricultural and Forest Meteorology. 246:111-122.Ecosystem level measurement of methane fluxes over grazed wheat pastures-(Abstract Only)A comparison of carbon dioxide and water vapor fluxes between winter wheat and tallgrass prairie ecosystems in Oklahoma-(Abstract Only) Bajgain, R., Xiao, X., Basara, J., Wagle, P., Zhou, Y., Mahan, H.R., Gowda, P.H., Steiner, J.L. 2017. A comparison of carbon dioxide and water vapor fluxes between winter wheat and tallgrass prairie ecosystems in Oklahoma [abstract]. FLUXNET Workshop 2017. Available at: https://ucanr.edu/sites/Fluxnet2017/files/261958.pdf.Management of water resources for grasslands-(Book / Chapter) Steiner, J.L., Wagle, P., Gowda, P.H. 2018. Management of water resources for grasslands. In: Marshall, A. and Collins, R. Improving grassland and pasture management in temperate agriculture. Cambridge, UK: Burleigh Dodds Science Publishing. p.265-282. https://doi:10.19103/AS.2017.0024.13.Performance of five surface energy balance models for estimatng daily evapotranspiration in high biomass sorghum-(Peer Reviewed Journal) Wagle, P., Bhattarai, N., Gowda, P., Kakani, V. 2017. Performance of five surface energy balance models for estimatng daily evapotranspiration in high biomass sorghum. Journal of Photogrammetry and Remote Sensing. 128:192-203.Growing season variability in carbon dioxide exchange of irrigated and rainfed soybean in the southern United States-(Peer Reviewed Journal) Wagle, P., Gowda, P., Anapalli, S.S., Northup, B.K., Reddy, K.N. 2017. Growing season variability in carbon dioxide exchange of irrigated and rainfed soybean in the southern United States. Science of the Total Environment. 593-594:263-273.Examining the short-term impacts of diverse management practices on plant phenology and carbon fluxes of Old World bluestems pasture-(Peer Reviewed Journal) Zhou, Y., Xiao, X., Wagle, P., Bajgain, R., Mahan, H., Basara, J., Dong, J., Qin, Y., Zhang, G., Luo, Y., Gowda, P.H., Neel, J.P., Steiner, J.L., Starks, P.J. 2017. Examining the short-term impacts of diverse management practices on plant phenology and carbon fluxes of Old World bluestems pasture. Agricultural and Forest Meteorology. 237:60-70. https://doi.org/10.1016/j.agrformet.2017.01.018.Carbon and water vapor fluxes of different ecosystems in Oklahoma-(Abstract Only) Wagle, P., Gowda, P., Northup, B.K. 2016. Carbon and water vapor fluxes of different ecosystems in Oklahoma [abstract]. American Geophysical Union. Available: https://agu.confex.com/agu/fm16/meetingapp.cgi/Paper/142017.Detecting the fingerprints of complex land management practices in a tallgrass prairie site using phenocam and satellite images, and the eddy covariance technique-(Abstract Only) Zhou, Y., Xiao, X., Wagle, P., Bajgain, R., Mahan, H., Basara, J., Dong, J., Qin, Y., Zhang, G., Luo, Y., Steiner, J.L., Gowda, P., Neel, J.P. 2016. Detecting the fingerprints of complex land management practices in a tallgrass prairie site using phenocam and satellite images, and the eddy covariance technique [abstract]. American Geophysical Union, December 12-16, 2016, San Francisco, California. Available: https://agu.confex.com/agu/fm16/meetingapp.cgi/Paper/157894.Carbon dioxide and water vapor fluxes of winter wheat and tallgrass prairie ecosystems-(Abstract Only) Bajgain, R., Xiao, X., Basara, J., Wagle, P., Zhou, Y., Mahan, H., Gowda, P., Steiner, J.L. 2016. Carbon dioxide and water vapor fluxes of winter wheat and tallgrass prairie ecosystems [abstract]. American Geophysical Union, December 12-16, 2016, San Francisco, California. Available: https://agu.confex.com/agu/fm16/meetingapp.cgi/Paper/149023.*** ***ProjectsIntegrated Research to Enhance Forage and Food Production from Southern Great Plains AgroecosystemsIn-House Appropriated (D)Accession Number:445628*** ***ARS News ArticlesNo news articles listed for this employee.*** **Research Interests** Land surface-atmosphere interactions with a focus on ecosystem carbon and water cycle dynamics using eddy covariance systems
Impacts of land use change, extreme climatic events, and management practices on carbon and water dynamics of terrestrial ecosystems
Up scaling of eddy flux observations (CO2 fluxes and ET) using modeling and remote sensing approaches  **Education:** Ph.D. (Crop Science, 2013)****Oklahoma State University, Stillwater, OK
MS (Horticulture, 2010)****Oklahoma State University, Stillwater, OK
BS (Agriculture, 2004)****Tribhuvan University, Nepal  **Professional Experience:** September 2016 - Current                *Research Ecologist*                                 USDA-ARS GRL
Fall 2016 to Fall 2021                       *Graduate Faculty, Plant and Soil Sci.*     Oklahoma State University
September 2015 to August 2016       *Research Scientist*                               USDA-ARS GRL/OU (Co-operative Agreement between USDA and University of Oklahoma) August 2013 to August 2015           *Postdoctoral Research Associate*            University of Oklahoma
April 2008 to July 2013                   *Graduate Research Assistant*                Oklahoma state University   **Publications Prior To Joining USDA:**  **Wagle, P.,** Xiao, T. E. Kolb, B. E. Law, S. Wharton, R. K. Monson, J. Chen, P. D. Blanken, , K. A. Novick, S. Dore, A. Noormets, and P. H. Gowda. 2016. Differential Responses of Carbon and Water Vapor Fluxes to Climate among Evergreen Needleleaf Forests in the USA. *Ecological Processes* 5(1): 1-17 (***Invited Paper by the Chief-editor of the Journal***) (https://doi.org/10.1186/s13717-016-0053-5).
**Wagle, P.**, P. Gowda, X. Xiao, A. KC. 2016. Parameterizing Ecosystem Light Use Efficiency and Water Use Efficiency to Estimate Maize Gross Primary Production and Evapotranspiration using MODIS EVI. *Agricultural and Forest Meteorology* 222: 87-97 (https://doi.org/10.1016/j.agrformet.2016.03.009).
**Wagle, P.**, V. G. Kakani, and R. L. Huhnke. 2016. Evapotranspiration and Ecosystem Water Use Efficiency of Switchgrass and High Biomass Sorghum. *Agronomy Journal*108: 1-13 (https://doi.org/10.2134/agronj2015.0149).
**Wagle, P.**, Y. Zhang, C. Jin, and X. Xiao. 2016. Comparison of Solar-Induced Chlorophyll Fluorescence, Light-Use Efficiency, and Process-Based GPP Models in Maize. *Ecological Applications* 26: 1211-1222 (https://doi.org/10.1890/15-1434).
Wang, J., X. Xiao, **Wagle**, S. Ma, D. Baldocchi, A. Carrara, Y. Zhang, J. Dong, and Y. Qin. 2016. Canopy and Climate Controls of Gross Primary Production of Mediterranean-type Deciduous and Evergreen Oak Savannas. *Agricultural and Forest Meteorology*226: 132-147 (https://doi.org/10.1016/j.agrformet.2016.05.020).
Zhang, Y., X. Xiao, C. Jin, J. Dong, S. Zhou, **Wagle**, J. Joiner, L. Guanter, Y. Zhang, G. Zhang, Y. Qin, J. Wang, and B. Moore III. 2016. Consistency between Sun-induced Chlorophyll Fluorescence and Gross Primary Production of Vegetation in North America. *Remote Sensing of Environment*183: 154-169 (https://doi.org/10.1016/j.rse.2016.05.015).
**Wagle, P.,** Xiao**,**R. Scott, T. E. Kolb, D. R. Cook, N. A. Brunsell, D. D. Baldocchi, J. Basara, R. Matamala, Y. Zhou, and R. Bajgain. 2015. Biophysical Controls on Carbon and Water Vapor Fluxes across a Grassland Climatic Gradient in the United States. *Agricultural and Forest Meteorology*214-215: 293-305 (https://doi.org/10.1016/j.agrformet.2015.08.265).
**Wagle, P.**, V. G. Kakani, and R. L. Huhnke. 2015. Net Ecosystem Carbon Dioxide Exchange of Dedicated Bioenergy Feedstocks: Switchgrass and High Biomass Sorghum.*Agricultural and Forest Meteorology*207: 107-116 (https://doi.org/10.1016/j.agrformet.2015.03.015).
**Wagle, P.**, X. Xiao, and A. E. Suyker. 2015. Estimation and Analysis of Gross Primary Production of Soybean under Various Management Practices and Drought Conditions. *ISPRS Journal of Photogrammetry and Remote Sensing*99: 70-83 (https://doi.org/10.1016/j.isprsjprs.2014.10.009).
Jin, C., X. Xiao, **Wagle,**T. Griffis, J. Dong, C. Wu, Y. Qin, and D. R. Cook. 2015. Effects of In-situ and Reanalysis Climate Data on Estimation of Cropland Gross Primary Production Using the Vegetation Photosynthesis Model. *Agricultural and Forest Meteorology*213: 240-250 (https://doi.org/10.1016/j.agrformet.2015.07.003).
Dong, J., X. Xiao, **Wagle**, G. Zhang, Y. Zhou, C. Jin, M. S. Torn, T. P. Meyers, A. E. Suyker, J. Wang, H. Yan, C. Biradar, and B. Moore III. 2015. Comparison of Four EVI based Models for Estimating Gross Primary Production of Maize and Soybean Croplands and Tallgrass Prairie under Severe Drought. *Remote Sensing of Environment* 162: 154-168 (https://doi.org/10.1016/j.rse.2015.02.022).
Bajgain, R., X. Xiao, **Wagle**, J. Basara, and Y. Zhou. 2015. Sensitivity Analysis of Vegetation Indices to Drought over Two Tallgrass Prairie Sites. *ISPRS Journal of Photogrammetry and Remote Sensing*108: 151-160 (https://doi.org/10.1016/j.isprsjprs.2015.07.004).
Gowda, P. H., T. Oommen, D. Misra, R. C. Schwartz, T. A. Howell, and **Wagle**. 2015. Retrieving Leaf Area Index from Remotely Sensed Data Using Advanced Statistical Approaches. *Journal of Remote Sensing & GIS*4: 156 (https://doi.org/10.4172/2469-4134.1000156)*.*
Gowda, P. H., P. V. Vara Prasad, S. V. Angadi, U. M. Rangappa, and **Wagle.** 2015. Finger Millet: An Alternative Crop for the Southern High Plains. *American Journal of Plant Sciences* 6: 2686-2691 (https://doi.org/10.4236/ajps.2015.616270).
**Wagle, P.**, X. Xiao, M. S. Torn, D. R. Cook, R. Matamala, M. L. Fischer, C. Jin, J. Dong, and C. Biradar. 2014. Sensitivity of Vegetation Indices and Gross Primary Production of Tallgrass Prairie to Severe Drought. *Remote Sensing of Environment* 152: 1-14 (https://doi.org/10.1016/j.rse.2014.05.010).
**Wagle, P.** and V. G. Kakani. 2014. Environmental Control of Daytime Net Ecosystem Exchange of Carbon Dioxide in Switchgrass. *Agriculture, Ecosystems & Environment* 186: 170-177 (https://doi.org/10.1016/j.agee.2014.01.028).
**Wagle, P.** and V. G. Kakani. 2014. Confounding Effects of Soil Moisture on the Relationship between Ecosystem Respiration and Soil Temperature in Switchgrass. *BioEnergy Research*7:789-798 (https://doi.org/10.1007/s12155-014-9434-8).
**Wagle, P.** and V. G. Kakani. 2014. Seasonal Variability in Net Ecosystem Carbon Dioxide Exchange over a Young Switchgrass Stand. *Global Change Biology Bioenergy* 6: 339-350 (Article first published online: 26 FEB **2013**) (https://doi.org/10.1111/gcbb.12049).
**Wagle, P.** and V. G. Kakani. 2014. Growing Season Variability in Evapotranspiration, Ecosystem Water Use Efficiency, and Energy Partitioning in Switchgrass. *Ecohydrology* 7: 64-72 (Article first published online: 23 SEP **2012**) (https://doi.org/10.1002/eco.1322).
**Wagle, P.**, M. W. Smith, B. W. Wood, and C. T. Rohla. 2011. Response of Young Bearing Pecan Trees to Spring Foliar Nickel Applications. *Journal of Plant Nutrition* 34: 1558-1566 (https://doi.org/10.1080/01904167.2011.585210).
**Wagle, P.**, M. W. Smith, B. W. Wood, and C. T. Rohla. 2011. Supplemental Foliar Nickel and Copper Applications Do Not Reduce Kernel Necrosis in Pecan Trees Receiving Excess Nitrogen. *Communications in Soil Science and Plant Analysis* 42: 2219-2228 (https://doi.org/10.1080/00103624.2011.602453).


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